摘要
针对山西某矿31107运输巷在靠近31105采空区掘进期间会遇到增压区,此范围内围岩应力集中且煤岩体容易破碎的现象,提出将巷道掘进进尺控制在700 mm,并综合采用密集锚索、注浆、角锚杆以及L型钢棚强化顶板及煤柱帮支护。经现场应用后,巷道安全通过增压区且围岩变形量较小,取得较好应用成果。
In order to ensure the tunneling and the stability of the surrounding rock, we propose to control the tunneling progress to 700mm and strengthen the roof and coal pillar support by using dense anchor cable, grouting, angle anchor rod and L-shaped steel shed. The roadway safely passed through the pressurized area with small deformation of surrounding rock after application on site, and achieved good application results.
作者
杨文宇
Yang Wenyu(Yixing Coal Industry,Shanxi Coking Coal Fenxi Mining Industry,Xiaoyi Shanxi 032300)
出处
《机械管理开发》
2022年第5期77-78,共2页
Mechanical Management and Development
关键词
巷道掘进
采空区
侧向应力
围岩支护
护巷煤柱
roadway excavation
mining area
lateral stress
surrounding rock support
coal pillar protection
