Shield Pressure Monitoring to Detect Longwall Ground Control Hazards.
Proc 4th Conf on Ground Control for Midwestern U S Coal Mines So Illinois Univ PP 217-226 :217-226
Continuously monitored shield-leg pressure changes have proven to be an indicator of certain longwall ground control hazards, including high-stress zones along the face and roof falls and floor heave in adjacent gateroads. Monitoring and analysis of shield load and gateroad stability data have been accomplished using the ground control management system (gcms) developed by the U.S. Bureau of Mines. The automated capabilities of the gcms have enabled researchers and mining personnel to remotely monitor geostructural data and evaluate ground stability during the high-speed extraction of four longwall panels in a Colorado coal mine. This paper emphasizes the application of shield load monitoring for detecting and managing developing ground control hazards along the face and in the gateroads.
Proc. 4th Conf. on Ground Control for Midwestern U.S. Coal Mines, So. Illinois Univ., PP. 217-226