Fucun Coal Industry Company Limited,Zaozhuang Mining Group Shandong University of Science and Technology

针对付村煤矿沿断层破碎煤岩巷道大变形问题,提出"二高一大"的支护原则,通过数值模拟的方法,对沿断层破碎煤岩巷道支护体系进行优化设计,并通过现场监测验证了支护体系的合理性及实用性。结果表明:沿断层破碎煤岩巷道采用锚杆间排距800 mm×900 mm,顶板锚杆长度为2 200mm,帮部锚杆长度为2 000 mm的支护体系,巷道顶板最大下沉量为81 mm,两帮最大移近量为116mm,能够有效地控制围岩的大变形,实现一次性安全支护的目标。

According to the high deformation problem of the broken seam and rock gateway along the faut in Fucun Mine a support principle of two high and one large was provided. with the numercalsimulaton method, an optimized design was conducted on the suport system of the broken seam and rock gateway along the fault. Th site monioring and measured resutis verifed the rationality and practices of the suppor system. The resulis showed that th suppor system with abot spacing of 80o mm×$00 mm,a roof ot length of 2 20 mm and a sidewall bot length of 2 00 mn was applied to the broken seam and rock gateway along the fauli.T'he maxsubsidence value of the roo in the gateway was &1 mm and the max convergence of the cal sidewals was 116 mm.The high deformation of the surounding roct waseffectively controlled and the target of the one-time safety support of the gateway was realized.

国家科技重大专项资助项目(2011ZX05040-002-01)；