摘要
以某矿井厚顶煤巷道为研究对象,通过在相邻岩层中建立接触面单元来进行岩层离层的数值模拟研究并得出结论:巷道围岩中各岩层不协调变形后出现离层,位移曲线在离层面处断开或跳跃至另一点不再连续光滑;锚杆和锚索杆体在接触面附近受力显著变大;建立了杆体受力的经验公式,并在6210工作面运巷进行试验,准确率较高。
In thick roof roadway, interface element between adjacent strata was established to simulate strata separation. The results show that the separation occurs after the uncoordinated deformation of the strata in the surrounding rock. Displacement curve breaks or jumps to another point at the separation point. The stress of bolts increases significantly in the vicinity of contact surface. The empirical formula of bolt force was established and tested in the transport roadway of No. 6210 working face, showing the high accuracy rate.
作者
任进生
REN Jinsheng(Dongqu Mine, Xishan Coal ＆ Electricity Group, Shanxi Coking Coal Group, Taiyuan 030200, Chin)
出处
《山西煤炭》
2017年第3期40-43,共4页
Shanxi Coal
关键词
离层
附加应力
经验公式
separation
additional stress
empirical formula
