Report: APP CMHS Project 1




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Appendix G Mine Site Details

Some of the coal mines adopting or using leading practices and technologies and identified by APP Partners as willing to host demonstration visits organised through future initiatives. Please note that intending visitors to the following mines should make contact with host country authorities to facilitate proposed site visits and establish bone fides of visitors for host site companies.

AUSTRALIA

Mine name Appin Coal Mine


Company BHP Billiton Pty Ltd


Location

Appin Mine is situated immediately south of the township of Appin, 37 kilometres north west of Wollongong, New South Wales.


Overview

Annual Production Capacity: 2.5 million tonne

Employees: 400

Extraction thickness: 2.9 – 3.2 m

Seam Depth: 550 m

Appin's coal is mined from the Bulli Seam at depths of up to 550 metres. Coal extracted from this seam is premium quality hard coking coal and is used for coke making by the Australian steel industry, and is also exported to customers around the world.

The mine is serviced by two vertical ventilation shafts and two inclined drifts. The shafts are 540 metres deep and the drifts are about 1.8 kilometres long.

In the early years, high methane emissions seriously affected Appin's production and safety. Methane drainage commenced in 1981 and extracts the gas ahead of mining, and during coal extraction by drilling holes I, above and below the coal. The gas is captured and used to generate electricity through a set of gas engines to provide a maximum of 94 MW of power to the NSW state grid.


Mining methods

Appin utilises 2 and 3 heading gateroads for longwall extraction. Longwall panels have typically been 250 m with an increase to 315 m. Block lengths are in the range 1,500 – 2,000 m.


Technology of interest

In-seam gas drainage – gas contents up to 17 m3/t, predominantly methane

Goaf drainage

Remote mining for Outburst control

High horizontal stress conditions – normally 25 MPa, may increase in localised areas


Contact details

BHP Billiton Illawarra Coal Regional Office
PO Box 514
Unanderra NSW 2526

Phone: +61 2 4255 3200 Fax: +61 2 4255 3201

http://www.bhpbilliton.com/bb/ourBusinesses/metallurgicalCoal/illawarraCoal/aboutillawarracoal/appin.jsp


AUSTRALIA

Mine name Austar Coal Mine


Company Yancoal Australia Pty Ltd


Location

Austar Coal Mine (Austar) is a deep underground coal mine located approximately 10 km south west of Cessnock in the Newcastle Coalfields of New South Wales, Australia.


Overview

Annual Production Capacity: 2.1 million tonne

Employees: 275

Austar commenced mining operations in April 2005 undertaking underground mining activities within the company’s existing mining lease area and introduced Longwall Top Coal Caving (LTCC) technology in September 2006.

Introduced in France, and further refined in China for the last 15 years, top coal caving uses a modified longwall mining system. LTCC technology is ideal in thick seams and enables significantly greater resource recovery in seams such as the Greta Seam.

The introduction of LTCC to Australia is a collaborative effort between Chinese, German and Australian engineers. Austar’s parent company Yanzhou Coal Mining Company is acknowledged as being one of the safest and most productive users of the technique.


Mining methods

Longwall panels at Austar Coal Mine are designed to extract up to 220 m wide, 1300 m long and the full height of the seam. They range in depth from 400 m to 530 m below the surface.


Technology of interest

Longwall panel goaf drainage

Longwall Top Coal Caving

Longwall goaf ventilation pressure balancing


Contact details

Middle Road, Paxton
PO Box 806, Cessnock NSW 2325

Phone: +61 2 4993 7200 Fax: +61 2 4993 7326

http://www.austarcoalmine.com.au


Mine General Manager

Phone: +61 2 4993 7356

Chris Ford

Phone: +61 2 4929 2063 Mobile: +61 411 423 272



AUSTRALIA

Mine name Beltana Coal Mine


Company Xstrata Coal Pty Ltd


Location

Beltana Underground Operations are located approximately 12 kilometres southwest of Singleton, 1 kilometre north of Broke and 1.5 kilometres east of Bulga, in the Upper Hunter Valley of New South Wales.


Overview

Annual Production Capacity: 6.8 million tonne

Employees: 170

The Beltana Operations form part of the Bulga Complex and are managed by Bulga Coal Management Pty Limited on behalf of the Bulga Joint Venture (BJV).

The Beltana Operations comprises one existing underground Longwall coal mining operation, Beltana Highwall and the Beltana Blakefield South Project. Each operation is managed by the Bulga Underground business unit and utilise the services of the Bulga Surface Operations Coal Handling and Preparation Plant (CHPP) and rail loading facility.


Mining methods

Beltana utilises Bord and Pillar mining with 2 development headings and cut-throughs at 100 m centres. Each development panel is separated by approximately 300 m forming a retreat longwall panel directly off the open-cut highwall. Punch Longwall mining is the means of secondary extraction of coal


Technology of interest

High production longwall face using automation


Contact details and method

Sydney Head Office

Phone: +61 2 9253 6700

http://www.xstrata.com/operation/beltana/


AUSTRALIA

Mine name Broadmeadow Coal Mine


Company BHPBilliton Mitsubishi Alliance


Location

Broadmeadow Mine is located 30 km north of Moranbah and 190 km south west of Mackay, Queensland.


Overview

Annual Production Capacity: 4.5 million tonne coking coal

Broadmeadow Mine is BHPBilliton Mitsubishi Alliance’s punch longwall underground operation on the Goonyella Riverside lease and commenced longwall mining in August 2005.


Mining methods

Broadmeadow utilises continuous miners to form dual heading 3.6 m high gateroads directly off the Goonyella Riverside surface mine highwall. In place JOY bolter miners and JOY shuttle cars are used to drive these roadways.

Retreat punch longwall panels are typically 320 m wide by 2100 m long and mine a 4.1 – 4.8 m seam section.


Technology of interest

Longwall using full face automation

Self drilling, single pass bolt installation


Contact details

BHP Billiton Mitsubishi Alliance
GPO Box 1389
Brisbane QLD 4001
Phone: +61 7 3226 0600 Fax: +61 7 3229 2575

http://www.bhpbilliton.com/bb/ourBusinesses/metallurgicalCoal/bma/aboutBma.jsp





AUSTRALIA

Mine name Cook Coal Mine


Company Caledon Resources


Location

Cook is located 20 km south of Blackwater in the Bowen Basin Coalfields of Central Queensland, Australia.


Overview

Annual Production Capacity: 0.5 million tonne coking coal

Seam Depth: 150 – 370 m

Extraction thickness: 3.4 – 5 m

Cook produces a low ash coking coal and a thermal by-product for export. Two seams are mined, the Castor at 130 – 350 m depth and the Argo 15 – 20 m below the Castor.


Mining methods

Cook is a bord and pillar operation using both the ‘cut and flit’ and in place bolter miner.

It is a low gas, generally low horizontal stress mining operation.

It is currently utilising a bridge conveyor system to eliminate shuttle cars, improve continuous miner utilisation and productivity.


Technology of interest

Self drilling, single pass bolt installation

Monorail integrated ventilation and services

Bridge conveyor system for coal haulage from the face to panel conveyor


Contact details

Caledon Coal Pty Ltd
Level 2, 87 Wickham Terrace
Brisbane QLD 4000
Phone: +61 7 3309 3100 Fax:+61 7 3831 0366
http://www.caledon.com.au/WebForms/ProjectInformation.aspx





AUSTRALIA

Mine name Crinum Coal Mine


Company BHP Billiton Mitsubishi Alliance


Location

Gregory Crinum is located 60 km north east of the rural centre of Emerald and 375 km north west of Gladstone and comprises the Gregory open-cut operations and Crinum underground mine.


Overview

Annual Production Capacity: 5.1 Million tonne

Extraction thickness: 3.1 – 3.4 m

Seam Depth: various up to 100 – 230 m

Seam access is via high wall entry from the previously mined Gregory Open Cut.

Access to the underground workings is via twin declines and an 85 m-deep, 6 m-diameter vertical ventilation shaft.


Mining methods

Development of the main in-seam infrastructure is carried out using one remote-controlled Joy and one ABM25 continuous miners in conjunction with crawler-mounted mobile bootends that advance the panel conveyor behind the miner and allow continuous development.

Longwall panel is typically 270 m wide and between 1,500 and 2,400 long and retreat mines the panel to the main headings. Access is via shaft for personnel and materials are transported via the former Southern Coal Mine main headings.


Technology of interest

Tube bundle gas monitoring and gas chromatography


Contact details

BHP Billiton Mitsubishi Alliance
GPO Box 1389
Brisbane QLD 4001
Phone: +61 7 3226 0600 Fax: +61 7 3229 2575

http://www.bhpbilliton.com/bb/ourBusinesses/metallurgicalCoal/bma/aboutBma.jsp





AUSTRALIA

Mine name Grasstree Coal Mine


Company Anglo Coal Pty Ltd


Location

Grasstree is located 25 km south-west of Middlemount and about 250 km south-west of Mackay within the Bowen Basin in Central Queensland, Australia.


Overview

Annual Production Capacity: 4.2 Million tonne

Extraction thickness: 2.4 – 2.9 m

Seam Depth: various up to 250 – 300 m

Seam access is by two vertical shafts sunk to the seam level (250 metre depth) in the Grasstree Mine pit bottom area. One shaft is for return air and the other for personnel and materials access.

Permanent bathhouse facilities and offices, suitable for the life of the Grasstree Mine operation, have been established at this shaft location.


Mining methods

Longwall panel is typically 300 m wide and between 2,400 and 3,000 m long and retreat mines the panel to the main headings. Access is via shaft for personnel and materials are transported via the former Southern Coal Mine main headings.


Technology of interest

Surface to in-seam gas drainage using Medium Radius drilling technology


Contact details

Anglo Coal Australia

Level 11, 201 Charlotte St
Brisbane QLD 4000
GPO Box 1410
Brisbane QLD 4001
Phone: +61 7 3834 1333 Fax: +61 7 3834 1390

www.anglocoal.com.au

http://www.anglocoal.com.au/wps/wcm/connect/AngloCoal/Our+Business/Our+Operations/Capcoal



AUSTRALIA

Mine name Mandalong Coal Mine


Company Centennial Coal


Location

Mandalong is located near Morisset in the Newcastle coal fields of New South Wales, Australia.


Overview

Annual Production Capacity – 4.8 million tonne coking coal

Seam Depth: 200 – 320 m

Extraction thickness: 3.4 – 5 m

Mandalaong commenced longwall mining in early 2005 and produces coal for local power generation, delivered directly by overland conveyor.


Mining methods

Mandalong utilises ABM25 continuous miners to form dual heading gateroads for the installation of longwall mining equipment. ABM25 bolter miners and JOY shuttle cars are used to drive these roadways.

Traditional retreat longwall panels are 150 m wide by 2,700 – 3,000 m long and mine a 5 m seam section.


Technology of interest

Self drilling, single pass bolt installation

Monorail integrated ventilation and services


Contact details

Level 18, BT Tower,
1 Market Street
Sydney NSW 2000

Phone: +61 2 9266 2700 Fax: +61 2 9261 5533

Mandalong Mine Phone: +61 2 4973 0900

http://www.centennialcoal.com.au/ssl/axs/1/2.asp?recID=155





AUSTRALIA

Mine name Moranbah North Coal Mine


Company Anglo Coal Australia

Moranbah North is 88 % owned by Anglo Coal Australia (ACA), with the remaining 12 % owned by joint venture partners Nippon Steel, Mitsui Coal, Shinsho Australia,

NS Resources and Kokan Kogyo. The mine is operated and managed by ACA.


Location

The Moranbah North mine is located in the northern part of Queensland's Bowen Basin around 18 km north of the town of Moranbah, 180 km west of Mackay in Queensland.


Overview

Annual Production Capacity – 4.5 million tonne hard coking coal

Employees - 650

The mine is owned by the Moranbah North Joint Venture whose principal beneficial owner is Anglo Coal Australia Pty Ltd. The mine is located 16 km north of Moranbah and is operated by Anglo Coal (Moranbah North) Pty Ltd. Prime low ash hard coking coal is exported to Asia and Europe. Saleable coal production is approximately 4 Mtpa. Measured and Indicated coal resources are 261 million tonnes (2003). Reported workforce for Moranbah North in 2003 is approximately 450.


Mining methods

Coal is mined from the Goonyella Middle Seam approximately 200 metres below the surface. In 2004, an underground Longwall mine with two development panels and a bord and pillar operation were added.


Technology of interest

Longwall using full face automation

Goaf gas drainage


Contact details

Level 11, 201 Charlotte Street
Brisbane QLD 4000
GPO Box 1410
Brisbane QLD 4001
Phone: +61 7 3834 1333
Fax: +61 7 3834 1390
www.anglocoal.com.au



AUSTRALIA

Mine name NRE No.1 Coal Mine


Company Gujarat NRE Coke Ltd


Location

NRE No. 1 is the former South Bulli Colliery, 10 km north of Wollongong and around 60 km south of Sydney in Australia


Overview

Annual Production Capacity: Re-development stages of an old mine

Extraction thickness: Bulli seam 2 m, Balgownie seam 1.3 m, Wongawilli seam 9 m

Seam Depth: various up to 400 m

Gujarat NRE intends to use pillar extraction to increase the recovery level in the remaining resources. While mining in the colliery has always been concentrated on the Bulli seam, the Balgownie and the Wongawilli seams have had little mining.


Mining methods

Pillar extraction in the Bulli seam uses the Continuous Miners and BLS breaker line supports.

The company intends to mine the Wongawilli seam using Longwall Mining equipment.

It proposes to mine the Balgownie seam using Thin Seam Mining methods for mining coal seams with thickness less than 1.5 metres and utilising a ‘cut & flit’ process.


Technology of interest

In-seam gas drainage – gas contents up to 10 m3/t

Pillar extraction


Contact details

Phone: +61 2 4223 6800 Fax: +61 2 4283 7368
gnal@gujaratnre.com.au

http://www.gujaratnre.com.au/resources.html


Mine Manager – Steve Bow

COO - Chris Harvey

AUSTRALIA

Mine name North Goonyella Coal Mine


Company Peabody Coal Pty Ltd


Location

North Goonyella underground mine is located at the northern end of the Bowen Basin, about 160 kilometres west of Mackay.


Overview

Annual Production Capacity: 3 Million tonne

Extraction thickness: 4.2 m

Seam Depth: various up to 250 – 350 m

The premium quality, medium volatile, high strength coking coal from North Goonyella has exceptional coking properties. It is able to make a strong and low reactivity coke in a wide variety of coke oven blends.


Mining methods

Development of the main in-seam infrastructure is carried out using two ABM25 continuous miners in conjunction with JOY shuttle cars.

Longwall panel is typically 300 m wide and 3,000 m long and retreat mines the panel to the main headings. Access is via two cross measure drifts one for personnel and the other coal haulage.


Technology of interest

Tube bundle gas monitoring and gas chromatography.

The mine experiences medium to high methane levels, moderate levels of horizontal stress and is moderately prone to spontaneous combustion.


Contact details

Peabody Energy

GPO Box 164
Brisbane QLD 4001

Phone: +61 7 3225 5500 Fax: +61 7 3225 5555

http://www.peabodyenergy.com.au/qld/north-goonyella-and-eaglefield.html



AUSTRALIA

Mine name United Colliery


Company Xstrata Coal Pty Ltd


Location

United Colliery is approximately 16 kilometres west of Singleton and 80 kilometres west of Newcastle in the Upper Hunter Valley of New South Wales.


Overview

Annual Production Capacity: 3 million tonne

Employees: 150

The mining operation at United exploits the Woodlands Hill Seam (local nomenclature) known to the Department of Primary Industries as the Arrowfield Seam. Coal is treated on site to produce both semi soft coking and thermal coal products. Coal is transported to Mount Thorley Coal Loader by road and on to the port of Newcastle by rail. United has entered into an agreement with Wambo Coal to participate in the Wambo Coal Loading Facility, which will allow United product coal to be transported via an internal haul road to the new rail loading facility at neighbouring Wambo Mine.


Mining methods

United Colliery utilises continuous miners to form development workings and a 200 m wide retreat longwall face for the secondary extraction of each longwall block.

Past operations have included bord and pillar mining with the “Cut & Flit” system and the utilisation of a JOY chain haulage system.


Technology of interest

Longwall using full face automation


Contact details

Sydney Head Office

Phone: +61 2 9253 6700

http://www.xstrata.com/operation/unitedcolliery/




AUSTRALIA

Mine name Wambo Coal Mine


Company Peabody Coal Pty Ltd


Location

Wambo is one of Peabody's largest operating mines and is located in the Hunter Valley, about 30 kilometres west of Singleton, in New South Wales. Coal is railed 85 kilometres to the Port of Newcastle for export.


Overview

Annual Production Capacity: 3.5 million tonne

Extraction thickness: 1.8 - 2.4 m

Seam Depth: 100 – 360 m

The North Wambo Underground Mine commenced development in November 2005 with longwall mining starting in October 2007. The mine extracts the two metre thick Wambo seam with a longwall face width of 250 metres and panel length of 3600 metres.


Mining methods

Wambo utilises Bord and Pillar mining to develop 2 heading gateroads for longwall extraction. The longwall panel is a traditional retreat extraction process towards main headings and mines the 2 m thick Wambo seam with a face width of 250 m and panel length of 3600 m.


Technology of interest

Longwall face using automation


Contact details

Peabody Energy

GPO Box 164
Brisbane QLD 4001

Phone: +61 7 3225 5500 Fax: +61 7 3225 5555

http://www.peabodyenergy.com.au/qld/north-goonyella-and-eaglefield.html

http://www.peabodyenergy.com.au/nsw/wambo-mine.html


AUSTRALIA

Mine name Westcliff Coal Mine


Company BHPBilliton Pty Ltd


Location

Westcliff Mine is situated immediately south of the township of Appin, 37 kilometres north west of Wollongong, New South Wales.


Overview

Annual Production Capacity: 3 million tonne

Extraction thickness: 2.4 – 3.2 m

Seam Depth: 480 – 550 m

Westcliff coal is mined from the Bulli Seam at depths of up to 550 metres. Coal extracted from this seam is premium quality hard coking coal and is used for coke making by the Australian steel industry, and is also exported to customers around the world.

In the early years, high methane emissions seriously affected Westcliff’s production and safety. Methane drainage commenced in 1980 and extracts the gas ahead of mining, and during coal extraction by drilling holes I, above and below the coal. The gas is captured and used to generate electricity through a power plant to provide 1.2 MW of power.


Mining methods

Westcliff utilises 2 and 3 heading gateroads for longwall extraction. Longwall panels are 300 m wide and block lengths are around 3,500 m.


Technology of interest

In-seam gas drainage – gas contents up to 17 m3/t

Remote mining for Outburst control

High horizontal stress conditions – normally 25 MPa, but may increase in localised areas


Contact details

BHP Billiton Illawarra Coal Regional Office
PO Box 514
Unanderra NSW 2526
Phone: +61 2 4255 3200 Fax: +61 2 4255 3201

http://www.bhpbilliton.com/bb/ourBusinesses/metallurgicalCoal/illawarraCoal/aboutillawarracoal/westCliff.jsp




CHINA

Mine name Adaohe Coal Mine


Company Shenhua Energy Group


Location

Adaohe Coal Mine is situated in Baotou, Inner Mongolian Autonomous Region.


Overview

Annual Production Capacity: 2 million tonne

Extraction thickness: 23 m

Seam dip: 700

Adahe coal mine extracts a single ultra-thick seam of 23 m.

The coal recovery ratio is as high as 87 %.


Mining methods

Adaohe mine utilises multi-level top coal caving method. Each level is about 10-15 m high and block length is around 1,000 m.


Technology of interest

Steep and thick seam mining technology with multi-level top coal caving method


Contact details

Adaohe Coal Mine
Shenhua Energy Group

Baotou, Inner Mongolian Autonomous Region
China 014100

http://www.shenhuagroup.com.cn/

CHINA

Mine name Baijigou Coal Mine


Company Shenhua Energy Group


Location

Baijigou Coal Mine is situated in Pingluo County, Nixia Autonomous Region.


Overview

Annual Production Capacity: 1.6 million tonne

Extraction thickness: 18 m

Seam Depth: 300 – 500 m

Baijigou coal mine commenced coal production in 1972. It mines anthracite.

Methane drainage extracts the gas ahead of mining with in-seam boreholes, cross-measure boreholes, gas tunnels above and below the mining seams, and surface gas drainage.


Mining methods

Baijigou mine employs a number of mining methods depending upon the localised geological and mining conditions. These methods include longwall mining and longwall top coal caving.


Technology of interest

Gas monitoring and early warning system

Emergency communication and personnel positioning systems

Control technology with combinations of various gas drainage systems


Contact details

Baijigou Coal Mine
Shenhua Energy Group

Shizuishan City, Nixia Automonous Region

China 273513

Phone: +86 952 2431353 Fax: +86 952 2436000




CHINA

Mine name Chengzhuang Coal Mine


Company Jingcheng Coal Mining Group


Location

Chengzhuang Coal Mine is situated in the west of Jingcheng city, Shanxi Province.


Overview

Annual Production Capacity: 4 million tonne

Extraction thickness: 3 - 5 m

Seam Depth: 250 – 400 m

Chengzhuang coal mine extracts coal from four coal seams at depths of up to 400 metres. Coal extracted from the seams of high gas content (up to 20 m3/tonne).

Methane drainage extracts the gas ahead of mining with in-seam and surface boreholes, and the captured gas is used for domestic use and electricity generation.


Mining methods

Chengzhung mine utilises “U+L” panel layout. After intensive surface and in-seam drainage, the gas emission from a typical panel of the mine is reduced to between 20 to 25 m3/min, and of those, 20 % of the gas is captured with goaf gas drainage.

Longwall panels are 150 m wide and block lengths are around 2,000 m.


Technology of interest

Surface borehole pre-mining drainage

In-seam drainage with directional drilling technology

Goaf gas capture technology

“U+L” panel layout

Multi-seam mining technology


Contact details

Chengzhung Coal Mine

Jingcheng Coal Mining Group

Jingchen City, Shanxi
China 048000

http://www.jccoal.com/web1/index.html

CHINA

Mine name Dalong Coal Mine


Company Tiefa Coal Mining Group


Location

Dalong Coal Mine is situated in the township of Xiaoming, Tiefa City, Liaoning Province.


Overview

Annual Production Capacity: 3 million tonne

Extraction thickness: 2.5 – 5.5 m

Seam Depth: 400 – 600 m

Dalong coal mine extracts a coal seam of high methane emission, outburst-prone and spontaneous combustion.


Mining methods

Dalong mine utilises top coal caving technology. Longwall panels are 160 m wide and block lengths are around 1,000 m.


Technology of interest

Outburst and gas emission control with gas tunnels extracted above the mining seam

Spontaneous combustion control technology with pressure-balancing chamber and fire-suppressant mist spray


Contact details

Dalong Coal Mine

Tiefa Coal Mining Group

Xiaoming Town, Tiefa, Liaoning Province

China 112701

http://www.tfcoal.com/

CHINA

Mine name Guqiao Coal Mine


Company Huainan Coal Mining Group


Location

Guqiao Coal Mine is situated in the middle of Panxie district of Huainan, Anhui Province.


Overview

Annual Production Capacity: 10 million tonne

Extraction thickness: 2 – 6 m

Seam Depth: 500 – 800 m

Guqiao coal mine commenced coal production in 2007 and the mineable coal reserve of the mine is 1.3 billion tonnes. Coal is mined from multiple coal seams at depths of up to 800 metres. Coal extracted from the seams is for power generation and PCI. The mining seams are of high methane emission and outburst-prone. In 2008, Guqiao mine produced 10.55 million tonnes.

Methane drainage extracts the gas ahead of mining, and during coal extraction by drilling holes and extracting gas drainage tunnels above and below the mining seams.


Mining methods

Guqiao mine utilises both single heading gateroad and pillarless method (retained gateroad) for longwall extraction. Longwall panels are 300 m wide and block lengths are around 3,000 m.


Technology of interest

Outburst and gas emission control with gas tunnels extracted above and below the mining seam

Pillarless mining – gateroad retaining technology and “Y” type ventilation

Multi-seam mining technology


Contact details

Huainan Coal Mining Group

Dongshan Road, Huainan, Anhui
China 232001

Phone: +86 554 7625020

Email: hnmine@163.com

www.hnmine.com


CHINA

Mine name Nantun Coal Mine


Company Yankuang Coal Mining Group


Location

Nantun Coal Mine is situated in Zoucheng City, Shangdong Province.


Overview

Annual Production Capacity: 4 million tonne

Extraction thickness: 3 – 5 m

Seam Depth: 300 – 500 m

Nantun coal mine commenced coal production in 1973. Coal extracted from the seams is for power generation. The mining seams are prone to spontaneous combustion.


Mining methods

Guqiao mine utilises single heading gateroad and longwall extraction. Longwall panels are 200 m wide and block lengths are around 2,000 m.


Technology of interest

Prevention and control of spontaneous combustion with gel and fly ash injection and liquid carbon dioxide inertisation


Contact details

Nantun Coal Mine
Yankuang Coal Mining Group

Zoucheng, Shangdong Province

China 273515

Phone: +86 537 5446034 Fax: +86 537 5446294



CHINA

Mine name Pansan Coal Mine


Company Huainan Coal Mining Group


Location

Pansan Coal Mine is situated northwester of Panxie district of Huainan, Anhui Province.


Overview

Annual Production Capacity: 5 million tonne

Extraction thickness: 2 – 6 m

Seam Depth: 400 – 700 m

Pansan coal mine has a mineable coal reserve of 1.2 billion tonnes. Coal is mined from multiple coal seams at depths of up to 800 metres. Coal extracted from the seams is for power generation and PCI. The mining seams are of high methane emission and outburst-prone.

Methane drainage extracts the gas ahead of mining, and during coal extraction by drilling holes and extracting gas drainage tunnels above and below the mining seams.


Mining methods

Pansan mine utilises both single heading gateroad and pillarless method (retained gateroad) for longwall extraction. Longwall panels are 200 m wide and block lengths are around 2,000 m. Capture gas is utilised for domestic heating and power generation.


Technology of interest

Outburst and gas emission control with gas tunnels extracted above and below the mining seam

Pillarless mining – gateroad retaining technology and “Y” type ventilation

Multi-seam mining technology

Utilisation of captured gas for heating and electricity generation


Contact details

Huainan Coal Mining Group

Dongshan Road, Huainan, Anhui
China 232001

Phone: +86 554 7625020

hnmine@163.com

www.hnmine.com




CHINA

Mine name Xingzhuangzhi Coal Mine


Company Huainan Coal Mining Group


Location

Xingzhuangzhi Coal Mine is situated in Bagongshan district of Huainan, Anhui Province.


Overview

Annual Production Capacity: 3 million tonne

Extraction thickness: 2 – 6 m

Seam Depth: 500 – 800 m

Xingzhuangzhi coal mine has 16 mineable coal seams. Coal is mined from multiple coal seams at depths of up to 821 m. The mining seams are of high methane emission and outburst-prone.

Methane drainage extracts the gas ahead of mining, and during coal extraction by drilling holes and extracting gas drainage tunnels above and below the mining seams.

Outbursts occurred a number of times in Xingzhuangzhi coal mines and resulted in a number of fatalities.


Mining methods

Guqiao mine utilises both single heading gateroad and pillarless method (retained gateroad) for longwall extraction. Longwall panels are 200 m wide and block lengths are around 2,000 m.


Technology of interest

Outburst and gas emission control with gas tunnels extracted above and below the mining seam

Pillarless mining – gateroad retaining technology and “Y” type ventilation

Multi-seam mining technology


Contact details

Huainan Coal Mining Group

Dongshan Road, Huainan, Anhui
China 232001

Phone: +86 554 7625020

hnmine@163.com

www.hnmine.com




CHINA

Mine name Xinjing Coal Mine


Company Yangquan Coal Mining Group


Location

Xinjing Coal Mine is situated in the 18 km west of Yangquan City, Shanxi Province.


Overview

Annual Production Capacity: 5 million tonne

Extraction thickness: 5 – 8 m

Seam Depth: 300 – 500 m

Xinjing coal mine is a new modern coal mine. Coal is mined from multiple coal seams at depths of up to 500 m. The mining seams are of high methane emission and outburst-prone.

Extensive methane drainage is practised in this mine. Gas extraction is mainly through the tunnels extracted above and below the mining seams.


Mining methods

Xinjing mine utilises single heading gateroad method for longwall extraction. Longwall panels are 160 m wide and block lengths are around 1,200 m.


Technology of interest

Outburst control technologies with borehole water injection and inseam gas drainage

Gas capture with the tunnels extracted specifically above and below the mining seams

Top coal caving mining in thick and gassy coal seams


Contact details

Xinjing Coal Mine

Yangquan Coal Mining Group
China 035107

http://www.ymjt.com.cn/

CHINA

Mine name Yangcun Coal Mine


Company Yankuang Coal Mining Group


Location

Yangcun Coal Mine is situated in the south of Yanzhou, Shangdong Province.


Overview

Annual Production Capacity: 1 million tonne

Extraction thickness: 8.4 m

Seam Depth: 500 – 600 m

Yangcun coal mine mines a seam of 8.4 m. Gas is not an issue, however, spontaneous combustion is a major challenge in mine operation.


Mining methods

Guqiao mine utilises single heading gateroad of longwalll extraction. Longwall panels are 270 m wide and block lengths are around 2,000 m.

‘W’ type ventilation system is employed in the panel extraction.


Technology of interest

Thick seam extraction with slicing mining technology

Spontaneous combustion prevention technology with goaf water injection


Contact details

Yangcun Coal Mining Group

Yankuang Coal Mining Group
China 272778

http://www.ykjt.cn/

INDIA

Mine name Margherita area Coal Mines


Company North Eastern Coalfields of Coal India Limited


Location

North Eastern Coalfields (NECF) is a unit of Coal India (CIL) operating in states of Assam, Meghalaya, Nagaland and Arunachal Pradesh. The three underground mines are located near Margherita town in Assam state of India.


Overview

Annual Production Capacity: 1.0 million tonne

Thickness: 20 ft to 60 ft

In Margherita Area presently, there are three underground and two opencast mines in operation. These mines have produced 1.05 MT during the year 2006-07.

NECF coals are situated in deep forest areas and having steep dips of 15°- 80°and difficult geo-mining conditions. NECF coal is soft and friable and hence very difficult to extract lump coals during mining. Because of the friable nature of coal and slack, generally there is a record high ash content due to admixture of dirt bands. Strongly caking coals of Assam can be used as a blend for coke making.

All the underground coal mines are degree-III gassy mines (methane gas emission of > 10 m3 per tonne of coal produced) and are highly prone to spon com and having a very soft roof and floor.


Mining methods

The present method of extraction of the highly steep seams is the Tipong method in two of the mines with gradients 40°-50°, and the scraper assisted Chamber method in one mine with gradients of 30°-35°.


Technology of interest

Steep seam mining – gas contents up to 10 m3/t

Very steep seam mining under difficult and very soft roof and floor conditions


Contact details

Technical Director

Coal India, Coal Bhavan, No.10 Netaji Subhas Rd, Kolkata-7.

Phone: +91 33 2242 1816 Fax: +91 33 2243 5789

E-mail: dtcil@coalindia.in

http://www.neccoal.co.in/abtus.htm



INDIA

Mine name Moonidih Coal Mine


Company Bharat Coking Coal Ltd of Coal India Limited


Location

Bharat Coking Coal Ltd (BCCL) is a unit of Coal India Limited (CIL) operating in state of Jharkand. The mine is located near the coal mining town of Dhanbad in eastern India.


Overview

Annual Production Capacity: 1.0 million tonne

The Moonidih coal mine of BCCL has about 18 coal seams with very good quality coking coal reserves of about 1000 million tonnes. The mine is worked with the longwall method in about 13 seams.

The coal mine is degree-II gassy mines (methane gas emission of 5 to 10 m3 per tonne of coal produced) and is highly prone to spon com.


Mining methods

Multiseam longwall mining


Technology of interest

Multi seam longwall mining and coal bed methane drainage with hydrofracturing for power generation.


Contact details

Technical Director

Coal India, Coal Bhavan, No.10 Netaji Subhas Rd, Kolkata-7.

Phone: +91 33 2242 1816 Fax: +91 33 2243 5789

dtcil@coalindia.in

http://bccl.cmpdi.co.in/default.asp



INDIA

Mine name Ramakrishnapur 8 Incline and Godavarikhani 10 Incline mines


Company The Singareni Collieries Co. Ltd


Location

Located near Godavarikhani Coal mining town approximately 225 km from Hyderabad, the capital of Andhra Pradesh state in India.


Overview

Annual Production Capacity: 0.5 million tonne each

Thickness: 3-12 m

The Singareni Collieries Company Ltd is a state-owned mining company. Simultaneous extraction of pillars is done in three contiguous seams with a parting of 7-9 m and with seam thickness of about 2.5 m at Ramakrishnapur 8 Incline mine and extraction of thick seam (10.5 m) in a single lift using Blasting gallery method in GDK -10 incline mine.


Mining methods

Simultaneous extraction of multi coal seams with less than 10 m parting and thick seam (>10 m) mining using blasting gallery technology


Technology of interest

Multi seam mining and thick seam mining


Contact details

Director - Planning and Projects

The Singareni Collieries Company Ltd

Kothagudem Collieries-507101

AP-India

Tel No. +91 8744 242328, +91 8744 249755, Fax: +91 8744 243108

dpp@scclmines.com





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