Mechanics analysis on the conditions of rock burst occurrence in the coal mass of roadway rib |
| |
Authors: | Xue-hua Chen Xiao-lin Deng Zhong-hua Li |
| |
Affiliation: | [1]College of Resource and Environment Engineering, Liaoning Technical University, Fuxin 123000, China [2]Dongtan Coalmine, Yanzhou Coal Mining Company Limited, Zoucheng 273512, China |
| |
Abstract: | According to the rock burst features occurred in the coal mass of roadway rib in one mine, the mechanics model of coal mass
and roof structure system along the edge of goaf was founded to analyze the stress of roof rock layer, so the subside curve
of roof rock layer was deduced. Furthermore, the stability of coal and rock system were analyzed, the critical load and critical
resistance zone were used to judge the danger degree of rock burst occurrence. The influence of coal mass strength, brittleness
degree, coal seam thickness, roof thickness, suspending length, equivalent shear module on the critical load, critical resistance
zone was confirmed. So the rock burst occurrence conditions of coal mass in roadway rib mainly depend on mining depth, coal
seam thickness and hard roof and floor, which are decided by the above studies, and successfully applied in prediction and
prevention of rock burst in this mine.
Supported by the Natural Science Fund of Liaoning Province(20042176) |
| |
Keywords: | rock burst coal mass of roadway rib critical load critical resistance zone |
本文献已被 维普 SpringerLink 等数据库收录! |
|