关键词: 高应力区, 卸压开采, 巷道支护, 巷道稳定性

Abstract: With the underground mining depth increased, the development working failure is more and more serious because of high ground pressure. It is of significance to keep those development workings stable. Based on the theoretical analysis and the tests, the depressurized support can be adopted to keep the development stability in the high stress area or some area that are seriously affected by mining stress. In this way, the high stress can be released by depressurized mining. Based on the stress reduced degree, the suitable support form and parameters can be chosen so as to keep the development working stable by depressurizing the support. And the industrial application results show that the depressurized support technology can effectively control the deformation of surrounding rocks in tunnel and keep the tunnel stable.

Key words: High ground pressure, Depressurized mining, Tunnel support, Tunnel stability