摘要
高抽巷适用于高瓦斯矿井工作面瓦斯抽采,其稳定性会受到工作面回采的影响,支护难度极大。通过对杜儿坪矿68308高抽巷进行地质力学测试和数值计算,分析了其变形与破坏特征,采用了树脂全长高预应力锚固锚杆锚索组合支护系统。巷道矿压监测结果表明,该支护有效抵抗了动压影响,支护效果显著。
High drainage roadway is suitable for gas drainage of high gas coal mine working face,the stability is affected by the working face mining,the difficulty of supporting is maximum. Du＇erping coal mine 68308 high drainage roadway is conducted the geological forces test and numerical calculation,the deformation and destruction features are analyzed. Resin high prestressed anchor bolt and anchor cable joint supporting system is adopted. The roadway mine pressure monitoring results show that the supporting resists the dynamic pressure influence,supporting effect is remarkable.
出处
《山西焦煤科技》
2015年第10期35-38,共4页
Shanxi Coking Coal Science & Technology
关键词
高抽巷
双采动
地应力
高预应力
数值模拟
支护
High drainage roadway
Double mining
Crustal stress
High prestress
Numerical simulation
Supporting
