A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Safety Aspects of Longwall Mining in the Illinois Coal Basin
The Bureau of Mines and Old Ben Coal Company concluded a cost-sharing contract in 1975, with the objective of demonstrating that the Herrin No. 6 Coalbed in Illinois, can be mined safely by longwall methods. Earlier attempts at longwalling ended in failure. A pre-mining investigation laid the groundwork for selecting a roof support system designed to control hazardous ground. Old Ben and Bureau engineers selected lemniscate-type roof shields. A rock mechanics program and geological mapping provide early warning capability and criteria for future equipment design. After safety and job skill training the longwall started in September 1976, and came to completion in May 1977. The major adverse condition was the occurrence of limestone concretions called coalballs. The shields provided adequate roof control even in faulty ground. Operation of the second panel started on August 1, 1977, after completing the panel-to-panel equipment transfer. Accident experience was favorable.
Safety Aspects of Longwall Mining in the Illinois Coal Basin
The Bureau of Mines and Old Ben Coal Company concluded a cost-sharing contract in 1975, with the objective of demonstrating that the Herrin No. 6 Coalbed in Illinois, can be mined safely by longwall methods. Earlier attempts at longwalling ended in failure. A pre-mining investigation laid the groundwork for selecting a roof support system designed to control hazardous ground. Old Ben and Bureau engineers selected lemniscate-type roof shields. A rock mechanics program and geological mapping provide early warning capability and criteria for future equipment design. After safety and job skill training the longwall started in September 1976, and came to completion in May 1977. The major adverse condition was the occurrence of limestone concretions called coalballs. The shields provided adequate roof control even in faulty ground. Operation of the second panel started on August 1, 1977, after completing the panel-to-panel equipment transfer. Accident experience was favorable.
Safety Aspects of Longwall Mining in the Illinois Coal Basin
E. A. Curth (author)
1978
43 pages
Report
No indication
English
Safety aspects of longwall mining in the Illinois coal basin
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