Study On Coal Roadway’s Monitoring And Prediction Of Dynamic Destabilization In Heavy And Steep Coal Seam

The rock structure of heavy and steep coal seam disturbed mining zone is complex,Because of the formation of mining strata partial slip gravity stress as large inclined coalseams, the influence which caused by coal and rock stress concentration enough to arouse thevariation of bearing structure in Roof Overlying Strata and produce dynamic destabilizationand destruction. With the increase of mining depths, dynamic destabilization and destructionupon coal roadway in heavy and steep coal seam is serious, threatening the safety inproduction. So the study on dynamic destabilization and destruction regularities of coal androck is used for hazards identification and formulating scientific measures.This thesis by on-site engineering geological survey, rock mechanic test, numericalcalculations and field testing of multiple indexes, mainly studys on dynamic destabilizationand destruction regularities upon+501level B6Roadway in heavy and steep coal seam ofDahong coal mine in Shenhua-Xinjiang Energy Com. Ltd.Research shows that, In the region of B6roadway disturbances, damage degree ofsurrounding rock, the strength and amplitude of destruction have significantly difference,surrounding rock deformation and collapse has obvious non-symmetry, periodic pressurebehavior shows strong, Borehole Camera materials, acoustic emission target and relatedcharacteristics parameters, which provides dynamic destabilization and destructionregularities of B6roadway in+501level and quantitative parameters for predict dynamicbuckling on-site, and has some reference for safety mining on-site.According to the monitoring and prediction theory basis of dynamic destabilization anddestruction in heavy and steep coal seam, the practice ensures the stability of roadways andface smooth advancing successfully, While this technology has some significance to other similar mining conditions either.