机译:超大型Y型隧道断面施工方法研究
Shenzhen Transportat Degish & Res Inst Co Ltd, Shenzhen 518003, Peoples R China;
Bldg & Mat Ind Management Off Minhang Dist, Shanghai 201100, Peoples R China;
China Univ Min & Technol Beijing, State Key Lab Geomech & Deep Underground Engn, Beijing 100083, Peoples R China;