摘要
针对余吾煤业N2105工作面回采期间强矿压对煤层上山大巷围岩的破坏情况,采用钻孔窥视法对围岩破坏程度进行了勘探,并提出了采用围岩分层注浆加固和水力压裂坚硬顶板相结合的防治方法。该方法对受工作面回采强动压影响下煤层大巷围岩的控制提供了借鉴和指导意义。
In view of the damage of surrounding rock caused by strong ground pressure during the mining period of n2105 working face in Yuwu Coal Industry Co.,Ltd.,the damage degree of surrounding rock was explored by drilling peep method,and the prevention method combining layered grouting reinforcement of surrounding rock and hydraulic fracturing hard roof plate was proposed.This method provides reference and guidance for the control of surrounding rock of coal seam roadway under the influence of mining strong dynamic pressure.
作者
陈凯
Chen Kai(Lu'an Group Yuwu Coal Industry Co.,Ltd.,Shanxi Changzhi 046103)
出处
《山东煤炭科技》
2020年第7期158-160,共3页
Shandong Coal Science and Technology
关键词
煤层巷道
强动压
注浆加固
顶板致裂
coal seam roadway
strong dynamic pressure
grouting reinforcement
roof cracking
