摘要
为了提高11号煤开采效率并缓解矿井采掘接替紧张局面,以11508综采工作面回风巷留巷为工程背景,根据巷道围岩岩性对切顶卸压留巷技术参数进行设计,并进行现场应用。结果表明:留巷段采用高强恒阻锚索+ZQ4000/20.6/45垛式支架支护顶板、采用深孔+浅孔爆破钻孔进行切顶卸压、采用U型钢+高强柔性挡矸网+金属背板进行挡矸可实现安全、平稳留巷,留巷段围岩变形整体较小,可满足后续使用需要。
In order to improve the efficiency of No.11 coal mining and alleviate the tension of mine mining,the technical parameters of cutting roof pressure relief roadway are designed according to the lithology of roadway surrounding rock,and the field application is carried out.The results show that high strength constant resistance anchor cable ZQ4000/20.6/45 stacking support support roof,deep hole shallow hole blasting hole are used to cut top and unload pressure,and U steel high strength flexible gangue screen metal back plate is used to block gangue.
作者
马丽威
Ma Liwei(Fenxi Mining Liuwan Coal Mine,Xiaoyi Shanxi 032300)
出处
《机械管理开发》
2021年第3期167-169,共3页
Mechanical Management and Development
关键词
深部开采
切顶卸压
综采工作面
坚硬顶板
deep mining
top cutting pressure relief
fully mechanized mining face
hard roof
