摘要
晟泰青洼煤业21021巷掘进期间,受相邻工作面回采动压影响,巷道围岩发生顶板下沉、两帮变形、底板鼓起严重等失控现象,不能满足后续使用需要。分析并提出水力切顶+高强锚网索围岩加固技术措施。采取巷道加固措施后,21021巷受2103面采动影响时巷帮收敛290 mm,顶、底板变形量为310 mm。
During the driving period of 21021 Lane in Qingwa Coal Industry of Shengtai,due to the influence of mining dynamic pressure of adjacent working face,the surrounding rock of roadway has some out of control phenomena,such as roof subsidence,two side deformation and floor heave,which can not meet the needs of subsequent use.This paper analyzes and puts forward the technical measures of hydraulic roof cutting and high strength anchor mesh cable surrounding rock reinforcement.After the roadway reinforcement measures are taken,the roadway side converges 290 mm and the deformation of roof and floor is 310 mm under the influence of 2103 mining.
作者
王伟伟
郭健康
Wang Weiwei;Guo Jiankang(Jincheng Coal Industry Group Shengtai Energy Investment Co.,Ltd.,Shanxi Jincheng 048000)
出处
《山东煤炭科技》
2020年第9期56-58,共3页
Shandong Coal Science and Technology
关键词
水力
切顶
回采
巷道
hydraulic
roof cutting
mining
roadway
