摘要
利用数值模拟技术,模拟并分析了锚网喷、锚索及底角锚杆耦合支护机理,并以鹤煤集团第五煤矿为工程背景,模拟并分析了高水平应力条件下,合理的锚网喷+锚索+底角锚杆耦合支护结构,提出了在高水平应力条件下,巷道的破坏是扭曲变形破坏,采用合理的锚网喷+锚索+底角锚杆支护结构和支护参数,可有效控制巷道扭曲变形,取得良好的支护效果。
Based on Numerical simulation technology, coupling support mechanics of rock bolt and mesh reinforcement and concrete spray-up and anchor wire has been. analyzed. According to actual engineering of the fifth coal mine of Hebi coal group, the reasonable structure of bolt and mesh reinforcement and anchor wire and base angle bolt support under high horizontal site-stress has been analyzed. It has been found that under high horizontal site-stress the distortion is the main reason for roadway breakage. To avoid breakage of roadway, the reasonable structure and parameter of rock bolt and mesh reinforcement and concrete sprayup and Anchor wire and base angle bolt support can be reinforced to overcome distortion and get good supporting effect.
出处
《中国矿业》
北大核心
2008年第7期65-68,共4页
China Mining Magazine
基金
国家自然科学基金重大项目(05490270)
关键词
锚网喷
锚索
底角锚杆
数值模拟
耦合支护
rock bolt and mesh reinforcement and concrete spray-up
anchor wire
base angle bolt
numerical simulation
coupling support
