Study on support system optimization of broken seam and rock gateway along fault

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.