高速铁路隧道穿越粉煤灰池施工技术

Construction Technology of High-speed Railway Tunnel Crossing Coal Ash Pool

武汉—黄石城际铁路采用隧道方式通过粉煤灰池,粉煤灰池地下水位高,含水量丰富,局部表层呈流塑状,结构松散,工程地质极差。在施工过程中,采用垂直围护、明挖基坑、基底处理、结构加强的综合隧道施工方案,成功解决了施工期间明洞开挖成型、基底承载力不足以及运营安全问题。

Wuhan to Huangshi Railway goes through the coal ash pool by tunneling.With high underground water level and flow plastic surface in part,the pool of coal ash is rich in water,loose in structure and worse in engineering geology.During construction,the problems of shaping excavation of open-cut tunnel,lack of basal bearing capacity and operation safety were successfully solved by adopting the comprehensive tunnel solution of vertical enclosure,open-cut foundation excavation,foundation treatment and structure strengthening.