Airshaft相关论文
Setting airshaft is one of the methods efficient to control the aerodynamic effects on a train traveling through a tunne......
风井选择位置地点第四系垂深95．93m，总涌水量10．92m^3/h。原设计选用填砂袋打止浆垫方法凿井，实际施工失败。后改为冻结法凿井取得成功......
