Review Of Applications Of The Coal-Mine Roof Rating (CMRR) For Ground-Control Planning And Operations
- Organization:
- Society for Mining, Metallurgy & Exploration
- Pages:
- 7
- File Size:
- 459 KB
- Publication Date:
- Jan 1, 1997
Abstract
The US Bureau of Mines (USBM) recently developed a rock-mass classification system for evaluating the structural competency of bedded roof strata. The system is called the coal-mine roof rating (CMRR), When compiled with the companion Lotus 1-2-3 spreadsheet, CMRR data are a useful tool with applications to longwall gate-road pillar design, safety-hazard mapping and artificial roof-support analysis. This paper gives a review of some applications under actual conditions found in current US mining operations.
Citation
APA: (1997) Review Of Applications Of The Coal-Mine Roof Rating (CMRR) For Ground-Control Planning And Operations
MLA: Review Of Applications Of The Coal-Mine Roof Rating (CMRR) For Ground-Control Planning And Operations. Society for Mining, Metallurgy & Exploration, 1997.