大断面回采巷道支护设计研究

Research on the design of the back and back of the large section

基于S8310大采高综采工作面的地质特征和生产技术条件,系统分析了大采高综采大断面回采巷道变形破坏的基本形式及原因,通过数值模拟结合现场实践提出回采巷道沿顶掘进方式,最终确定S8310综采大断面回采巷道支护方案为:锚网索+W钢带(顶)联合支护,现场实践表明,回采巷道围岩变形得到有效控制,支护效果明显。

Based on the large mining height are broken $8310 fully mechanized working face of geological characteristics and productiontechnology conditions, systematic analysis of the large mining height are broken fully mechanized large section roadway, the basic form ofdeformation and failure and the reason, through the numerical simulation in combination with the practice along the roof of roadway excavationmethod is put forward, finally determine S8310 fully mechanized large section roadway support scheme is： ＋ W steel belt anchor wire rope （top）combined support, field practice shows that extraction to effectively control the deformation of surrounding rock of roadway, the supporting ef-fect is obvious.