锚杆索环形一体化支护技术在马头门修复中的应用

辛置煤矿上跑蹄进风立井马头门由于所处岩层主要为泥岩和煤线,井筒淋水严重,同时受到附近巷道、硐室施工的扰动影响,发生大面积变形破坏.为了对其进行修复治理,结合马头门围岩破坏形式和国内外治理技术现状,提出了锚杆索环形一体化控制技术.采用数值模拟、工程类比等方法确定了注浆加固、高预应力锚杆索支护、U型钢架设、混凝土砌碹等技术...

Application of annular integration support technology with anchor cable to coal mudstone ingate

Abstract: As the ingate of Xinzhi coal mine mainly located in the area with mudstone and coal line, suffering from serious pouring water and affected by the excavation of nearby chambers, the large deformation and failure occurred. In order to repair the broken ingate, on the basis of the failure conditions of the ingate and the common technologies at home and abroad, the annular integration support technology with anchor cable is put forward. In the meantime, the overall repairing scheme which combines with sorts of technologies of grouting, the high pre-stressed anchor cable, the U shaped steel support, concreting reinforcement and the specific support parameters are determined by numerical simulation and engineering analogy method. Finally, the set of scheme is applied in this ingate and the good reinforcement results are achieved.