矿山通常用的锚杆多是涨壳式,依靠锚杆端都涨开呈锥形,支撑在岩体中,再靠杆和垫板螺帽等拉住松散的岩层,增强其稳固性,因为锥头接触岩石面积小,产生的摩擦力小,以后就发展成为注浆锚杆,就是打好锚杆后,再将锚杆和孔壁间隙之间注入水泥砂浆或树脂等胶结物质,这种注浆锚杆支护效果是好的,但是工序复杂. Most commonly used mine mines are up-shell type, relying on the bolt end are up taper, supported in the rock, and then by the rod and pad nut and other loose rock, to enhance its stability, because Cone contact rock area is small, the friction generated by the small, later developed into a grouting anchor, is to lay the anchor, and then between the anchor and hole wall between the injection of cement mortar or resin cement, this Grouting bolt support effect is good, but the process is complicated.