摘要
为解决近距离多煤层采动影响巷道围岩控制难题,采用现场调研、工业性试验等方法,以变被动为主动控制的设计原则,采用高预紧力锚杆实现对顶板岩层的主动控制,同时采用预应力锚索及大尺寸托板构件提高护表面积,约束表层围岩变形。基于此,开发了近距离多煤层采动影响巷道围岩控制技术,实现了近距离多煤层采动影响巷道的有效控制。
In order to solve the problem of surrounding rock control of roadway affected by mining in close distance and multiple coal seams,field investigation,industrial test and other methods are adopted.Based on the design principle of changing passive into active control,high pretension bolt is used to realize the active control of roof strata.Meanwhile,prestressed anchor cable and large-size supporting plate are used to improve the surface area of support and restrict the deformation of surrounding rock on the surface.Based on this,the surrounding rock control technology of roadway affected by mining in close multiple coal seams is developed,and the effective control of roadway affected by mining in close multiple coal seams is realized.
作者
李元武
Li Yuanwu(Mugua Coal Mine of Lvliangshan Coal Electricity Co.,Ltd.of Huozhou Coal Electricity Group,Shanxi Fangshan 033100)
出处
《山东煤炭科技》
2021年第6期10-12,共3页
Shandong Coal Science and Technology
关键词
近距离
多煤层
巷道
支护
close range
multiple seam
roadway
support
作者简介
李元武(1985—),男,山西洪洞人,2013年12月毕业于太原理工大学采矿工程专业,本科,现为霍州煤电集团吕梁山煤电有限公司方山木瓜煤矿安全管理科副科长。
