煤炭与化工2024，Vol.47Issue(11)：29-32,4.DOI:10.19286/j.cnki.cci.2024.11.007
定向预裂爆破切顶沿空留巷技术实践
Technical practice of directional pre-splitting blasting roof cutting gob-side entry retaining
李燕涛1
作者信息
- 1. 冀中能源股份有限公司章村矿,河北 邢台 054108
- 折叠
摘要
Abstract
In order to reduce the tunneling rate of roadway and recover the coal pillar resources in the section,Zhangcun Mine carried out the research on the technology of directional pre-splitting blasting roof cutting and gob-side entry retaining in the coal roadway of 3113 working face.Combined with the geological production conditions of the working face,the main parameters such as roof cutting angle,height and borehole spacing were determined by theoretical calculation,and the phased surrounding rock control scheme was formulated.The field application shows that after blasting roof cutting,the deformation of roadway is reduced,and the economic benefit is remarkable.关键词
定向爆破/切顶卸压/沿空留巷/围岩控制Key words
directional blasting/roof cutting pressure relief/gob-side entry retaining/surrounding rock control分类
矿业与冶金引用本文复制引用
李燕涛..定向预裂爆破切顶沿空留巷技术实践[J].煤炭与化工,2024,47(11):29-32,4.
