综放异形煤柱沿空留巷锚网支护与加固技术研究

SUPPORT AND REINFORCEMENT TECHNIQUE FOR THE PROTECTED IRREGULAR PILLAR AND REMAINED GATEWAY ALONG FULLY MECHANIZED TOP CAVING MINING FACE

提出并实施了以加固沿空异形煤柱为主、悬承锚网支护留巷圈为辅的综合控制技术，形成了对受采动影响的巷道进行机理明确、在关键部位和关键时期进行有效控制的技术体系，并在理论上揭示了异形煤柱不同宽度处巷道支护的作用机理。通过现场实施，取得了较好的支护效果。

Based on the analysis of the pressure characteristics of the remained roadway along goaf, a comprehensive support system is designed and the reasonable parameters of the support system are determined by numerical simulation and analysis of rock broken zone. The supporting mechanism for different width of pillar protection is clarified. The control technique is proposed and employed through reinforcing irregular pillar in its two sides, installing a row of hydraulic prop and anchoring of roof strata which hangs the mesh and bolt rock mass as an auxiliary means to support the gateway. The reinforcing system forms a set of control system, which acts at the key position and in key period in clear mechanism to the mining influenced gateway. The site measurement shows good results of the support.