近距离煤层采空区下工作面巷道支护研究

以平煤六矿戊9-10-22310工作面为研究对象,对近距离煤层采空区下工作面巷道支护主要影响进行研究。结合现场实际,提出采用“桁架锚索+锚网”支护方法对工作面巷道进行支护,以数值模拟为手段确定了支护基本参数。支护实践表明,通过该支护方法的应用,戊9-10-22310工作面巷道在掘进期间顶底板移近量和两帮移近量不足1%,在回采期间顶底板移近量和两帮移近量不足5%,支护效果较好,能够满足现场采掘要求。

Study on the Support Along the Working Face of Goaf in Close Seam

Abstract: Analyzed the main influence of the support along the channel in the working face under the goaf of the short distance coal seam. Taking the WU9-10-22310 working face as the research object, combined with the field practice, the support method of "truss anchor cable + anchor net" is proposed to support the working face along the channel, and the basic parameters of the support are determined by means of numerical simulation. The support practice shows that, through the application of the support method, the amount of roof and floor moving and two sides moving is less than 1% in the tunnelling period, and less than 5% in the stoping period, the support effect is good and can meet the requirements of field mining.