探析深部瓦斯隧道瓦斯治理技术

Exploring Gas Control Technology of Deep Gas Tunnel

随着西部山岭地区铁路隧道的不断修建,且经常需要穿越煤系地层,瓦斯灾害也逐渐发展为瓦斯隧道施工建设过程中重大地质灾害之一。为减少或消除隧道建设过程中瓦斯窒息、瓦斯爆炸等灾害的发生,笔者浅析深部隧道瓦斯治理面临的难点,指出仍需在地质构造的精准探测、瓦斯技术参数的测试、低透气性煤系地层的卸压增透、瓦斯抽采钻孔参数优化等方面加强理论、实验室及现场实测研究,形成深部隧道瓦斯治理体系。

With the continuous construction of railway tunnels in the western mountain area and the frequent need to pass through coal strata,gas disasters have gradually developed as one of the major geological disasters in the construction of gas tunnels.In order to reduce or eliminate the occurrence of disasters such as gas asphyxiation and gas explosion during tunnel construction,the author briefly analyzes the difficulties faced by deep tunnel gas control,and points out that it is still necessary to strengthen theoretical,laboratory and field measurement research in the aspects of accurate detection of geological structures,testing of gas technical parameters,pressure relief and permeability increasing of low-permeability coal strata,and optimization of gas drainage drilling parameters,so as to form a deep tunnel gas control system.