宜万铁路大支坪隧道大型突水突泥溶腔迂回绕行施工技术
의만철로대지평수도대형돌수돌니용강우회요행시공기술
Technology for Detour Construction of Large-Scale Water and Mud Inrush Cavity in Dazhiping Tunnel on Yichang-Wanzhou Railway