锚喷支护在云锡马矿塘子凹坑松散风化花岗岩巷道掘进中的应用

THE APPLICATION OF BOLTING AND SHOTCRETING ON WEATHERING GRANITE TUNNELSIN TANGZHIWA PIT,MALAGE TIN MINE

本文通过在风化花岗岩中,利用超前锚杆锚喷支护,新奥法施工掘进巷道的现场实践,总结了此类巷道施工的技术方案、技术参数和实施方法.

This thesis has described a technique of tunnelling by which the beforehand bolting,NATM, si otcreting and bolting are uesd in weathering granite.The construction plan of this technique, technical parameter and the nethods of enforcementare summarized by the author.