陕西煤炭2025，Vol.44Issue(3)：74-78,5.DOI:10.20120/j.cnki.issn.1671-749x.2025.0313
沿空巷道爆破切顶卸压与支护参数设计
Design of blasting roof-cutting pressure relief and support parameters of gob-side entry
赵贤金1
作者信息
- 1. 太原煤炭气化(集团)有限责任公司,山西 太原 030000
- 折叠
摘要
Abstract
In order to solve the problem of large deformation of the goaf roadway along the 1404 track of a mine in Shanxi Province under the influence of high supporting pressure,the pre-cracking blasting roof cutting technology was used to re-lieve the pressure of the roadway roof.The deformation characteristics and pressure relief effects of the roof under different roof cutting heights(4,8 and 12 m)and different roof cutting angles(0°,15°and 30°)were analyzed by using discrete ele-ment numerical simulation software,and the deformation characteristics of the surrounding rock of the roadway under differ-ent support conditions were compared and analyzed.The results show that the roof cutting height of 12 m and the roof cutting angle of 15°are the roof cutting parameters suitable for the engineering geological characteristics of the goaf roadway along the 1404 track,and the deformation of the surrounding rock is effectively controlled by the anchor rod+anchor cable sup-port method,and the deformation of the surrounding rock of the roadway is finally stable at 57～171 mm.关键词
切顶卸压/沿空巷道/数值模拟/切顶参数/巷道变形Key words
roof cutting pressure relief/gob-side entry/numerical simulation/roof cutting parameters/roadway deformation分类
矿业与冶金引用本文复制引用
赵贤金..沿空巷道爆破切顶卸压与支护参数设计[J].陕西煤炭,2025,44(3):74-78,5.
