【摘要】 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.更多还原

【Abstract】 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.更多还原