In order to solve the problems in surrounding rock treatment in No.1 Coal mine of Huangling Mining Group,according to the underground geological conditions,the stress characteristics of raw rock during fully-mechanized mining operation were studied by comprehensive use of hollow inclusion stress relief method,borehole probing method,and borehole imaging method,etc.FLAC3D simulation analysis software was used to study the control parameters of roadway surrounding rock,and the best support scheme was determined.According to the practical application,the stability of surrounding rock in large-depth fully-mechanized mining operation was poor,and the stability of roadway excavation was ensured through the comprehensive use of anchor reinforcement,high-prestressed anchor rod,combined anchor cable support and shotcrete reinforcement,and the stability of surrounding rock in deep-mechanized mining operation was greatly improved.
关键词
大深度综采/围岩支护/FLAC3D仿真分析
Key words
large-depth fully-mechanized mining/surrounding rock support/FLAC3D simulation analysis
维普
万方数据