高瓦斯压力煤层中相邻巷道支护研究

利用ANSYS程序，模拟了巷道在高瓦斯倾斜煤层地质条件下，相同支护方式在瓦斯压力条件变化时相邻巷道应力场的变化情况及对支护的影响。研究结果表明，随着瓦斯地质条件的变化，巷道围岩周边应力场和位移场发生很大变化，在相应的支护方案不变的情况下，先挖巷道发生严重破坏，而后挖的相邻巷道则表现为相当稳定。工程实践表明，瓦斯压力对支护具有相当大的影响，先挖巷道对瓦斯压力的卸压作用应引起足够重视，该研究结果可以为支护措施的设计，提供科学依据并指导工程实践。

Research on support system for adjacent gateways in pressurized high gassy seam

With the ANSYS program, the paper simulated the variations and the support influence when the gas pressure conditions changed and the stress field changed in the adjacent gateways with the same support method under the high gassy inclined seam conditions. The research results showed that there were great changes occurred in the stress field and displacement field in the surrounding rocks of the gateways. With the same support system, the gateway excavated in the first stage was seriously damaged and the gateway and adjacent gateways were quite stable. The practices showed that the gas pressure would have a relative high influence to the support of the gateway. It should pay a special attention to the gas pressure releasing in the first stage of the gateway excavated. The results can be the scientific references and project practice guide for the design of the support measures.