摘要
近水平煤层大断面开切眼导致围岩应力的分布规律发生变化。以寸草塔煤矿为研究背景,通过理论分析开切眼巷道顶底板及两帮的应力分布变化情况。结合现场工程实践与理论分析确定采用"锚杆+桁架锚索+锚网"的支护方案,保障井下工作人员在开切眼过程中的安全。
The stress distribution of large-section open-off cut surrounding rock changed greatly in flat seam exploitation. According to Cuncaota coal mine, theoretical analysis were applied to research the stress distribution of open-off cut tunneling. Taken theoretical analysis and field experience into consideration and supporting project and parameters had been determined and proved a great success in the safety and property insurance of workers during open-off cut tunneling.
出处
《煤炭技术》
CAS
北大核心
2015年第9期84-86,共3页
Coal Technology
关键词
近水平煤层
矩形巷道
支护
大断面
开切眼
flat seam
rectangle roadway
supporting
large-section
open-off cut
