标题：Study on predictin of surface subsidence of an exremely shallow large-span double-arch tunnel
作者：Li, Xinzhi; Li, Shucai; Li, Shuchen; Feng, Xianda; Yuan, Chao; Li, Wenting
作者机构：[Li, Xinzhi; Li, Shucai; Li, Shuchen; Feng, Xianda; Yuan, Chao; Li, Wenting] Shandong Univ, Geotech & Struct Engn Res Ctr, Jinan 250100, Peoples R Chi 更多
会议名称：International Conference on Chemical, Material and Metallurgical Engineering (ICCMME 2011)
会议日期：DEC 23-25, 2011
来源：ADVANCES IN CHEMICAL ENGINEERING, PTS 1-3
关键词：double-arch tunnel; shallow large-span; surface subsidence;; geomechanical model test; numerical simulation
摘要：The Qi-Great Wall tunnel which crossed the Qi -Great Wall ruins was a large span double-arch tunnel with two-way and six-lane and the maximum depth was less than 5 meters, in order to protect the safety of the surface ruins in the tunnel construction progress, surface subsidence control was particularly important. Through comprehensive geomechanical model test and numerical simulation, the surface subsidence wich generated in the process of construction according to construction methods of excavation and support was studied, the distribution of surface subsidence got through two methods was well fit,and research results could provide guidance for the construction.