【摘要】 采用普通爆破法施工，井巷成型不好，尤其在大型硐室中应用效果更差，破坏了围岩的稳定性和自承能力，从而使锚喷支护作用大大削弱，加大了井巷修复的工作量。针对上述问题，我们根据马兰矿硐室的实际情况，进行了分析研究，将原有支护方案改为光爆锚喷支护方案。通过实际应用，取得了良好的效果更多还原

【Abstract】 The shaping of cross section of roadway is not good when general blasting is used and cavity is large,which reduces the stability and ability of self bearing of the surrounding rock and increase engineering of roadway.In view to these shortcoming,based on practical situation of large cavity of Malan Coal Mine,the authors analyze and study the method of support technology of the shooting concrete.Good result is obtained.更多还原