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......
通过对平顶山煤业集团十三矿西风井冻结段井壁裂缝涌水分析,详细阐明了壁间注浆方案,注浆时机的选择,注浆材料及配比的合理确定,及......
IntroductionSignificantpresuretransientsaregeneratedwhenahighspeedtrainentersandpasesthroughatunnel,whichcancauseaseriesofpro.........