深井主要巷道永久支护锚杆工况安全分析

Permanent Supporting Of Deep Mines Main Roadway Anchor Working Condition Analysis

为了研究深部煤矿主要巷道支护情况,采用测力锚杆对深部煤矿采区主要回风巷道锚杆受力及变形进行检测,通过在630回风大巷拱部顶板、肩窝处、帮部各布置一个测力锚杆,得到了巷道不同区域锚杆受力及变形数据。对测力锚杆收集到的数据进行可以看出,顶板锚杆轴向受力主要集中在1000~2100mm范围之内,锚杆受力大约为50k N,大致相当于锚杆杆体的屈服载荷的20~30%左右。

To study the deep mines main roadway support, the use of force in primary return air roadway anchor rod anchor rod for deep coal mining stress and deformation for testing, in 630 return air alleys arch roof, Jian Wo place, help each decorate a load anchor, the different regions of a roadway bolt stress and deformation data. To load anchor rod can be seen that the collected data, the roof bolt axial stress mainly concentrated in the range of 1000 ~ 2100 mm, the bolt stress is about 50 k N, roughly the equivalent of anchor rod body yield load of 20% ~ 30%.