摘要
针对寺河矿东四盘区西翼回风巷变形严重、控制困难等问题,采用现场调研与工程实践相结合的手段,提出动压影响下盘区巷道无机材料预注浆加固+高预紧力锚索二次补强耦合加固措施,两者构成主动支护系统。现场矿压监测结果表明:联合加固措施有效控制了受动压影响巷道的长期持续变形,彻底改变了反复巷修的被动局面。
In view of the serious deformation and difficult control of the return air roadway in the West Wing of Sihe Coal Mine, the coupling reinforcement measures of inorganic material pre grouting and high pre tightening force anchor cable secondary reinforcement under the influence of dynamic pressure are proposed by means of field investigation and engineering practice, which constitute the active support system. The monitoring results show that the combined reinforcement measures can effectively control the long-term continuous deformation of roadway affected by dynamic pressure, and completely change the passive situation of repeated roadway repair.
作者
闫张宁
Yan Zhangning(Sihe Coal Mine of Shanxi Jincheng Anthracite Mining Group Co.,Ltd.,Shanxi Jincheng 048000)
出处
《山东煤炭科技》
2020年第12期80-82,共3页
Shandong Coal Science and Technology
关键词
动压
大断面
注浆
支护
dynamic pressure
large section
grouting
support
