Evaluation of Roof Conditions from Bolting Machine Parameters.
Lusignea-RW; Maser-KR; Talman-W
NTIS: PB 80-143027 :249 pages
This report describes a program to evaluate the feasibility of determining roof features that occur in U.S. coal mines from changes in bolting machine drilling parameters. The objective is to develop an instrumented roof bolting machine that can detect hazardous roof conditions and/or indicate when the existing roof control plan is inadequate. A survey of hazardous conditions occurring in U.S. coal mines is included, along wtih the slang expressions for these conditions, and their relative degree of hazard. Specific machine parameters are identified for detecting the specific roof conditions. Measurement concepts are proposed using readily available instrumentation, various systems are evaluated, and tradeoffs are presented. An implementation plan is proposed for developing a prototype system and using it in an operating coal mine.
CP; Final Contract Report;
NTIS Accession No.
NTIS: PB 80-143027
Foster-Miller Associates, Inc