摘要
依据巷道顶底板岩层真实力学参数,通过RFPA数值模拟软件,模拟了巷道进行底锚杆支护前后的底鼓破坏应力应变情况和破坏程度的对比,演示了底锚支护对巷道底鼓的控制作用。现场试验表明:经过底锚支护的巷道4个月后顶底板移近量平均只有179mm,是未支护巷道的1/3。研究结果对底鼓巷道的支护具有一定的参考价值。
On the basis of roof and floor strata of roadway real mechanical parameters, by RFPA numerical simulation software, to simulate the damage of floor heave of roadway to bottom before and after bolt support stress strain and damage degree of the contrast, demonstrates the anchor supporting of roadway floor heave control function.Field test shows that after anchor supporting of roadway roof and floor after 4 months nearer the quantity is only an average of 179 mm and is not the 1/3 of the supporting of roadway. The results of the study on floor heave of roadway support has a certain reference value.
出处
《机械管理开发》
2016年第5期41-43,共3页
Mechanical Management and Development
关键词
矿山压力
巷道底鼓
数值模拟
锚杆支护
pressure
mine roadway with floor heave
numerical simulation
rock bolting
