沼气地层中地铁深基坑加固方案比选

Methane Formation in Subway Deep Foundation Pit Reinforcement Scheme Selection

文章结合沼气地层实际情况和基坑深度,采用不排气开挖的方式,利用直接测量、压力估算、等效换算3种方法,综合确定沼气压力,从施工工艺、工期和成本3方面综合比选,利用地下连续墙的加固方法,取得了良好效果。

Combined with the actual situation and the methane formation depth of excavation, the excavation of the exhaust, the use of direct measurement, pressure estimation, equivalent conversion of three kinds of methods, determine the methane pressure, from construction technology, construction period and cost three aspects of comprehensive comparison, the reinforcement method of underground continuous wall, and achieved good results.