Estimation of minimum rock cover for a sub-water tunnel

摘要：

　　From the viewpoint of tunnel stability, two proposed models are presented in this paper for estimating the minimum rock cover of a sub-water tunnel in the cases of homogeneous rock mass and inhomogeneous rock mass, which are based on the concept that minimum rock cover is obtained when support pressure at crown reaches to the minimum.The first model is based on the assumption that rock mass is homogeneous, where rock mass strength complies with Mohr-Coulomb failure criterion, while the latter is for inhomogeneous rock mass.Furthermore, comparison is made among the proposed models, Norwegian empirical curve and Japanese minimum water inflow model to estimate the thickness of the minimum rock cover.

作者: S.W.Chen

作者单位: Broadvision Engineering Consultants, Division of Tunnel and Traffic Engineering Design, Kunming, China

会议类型: 国际会议

会议名称: The 3rd ISRM Young Scholars Symposium on Rock Mechanics(第三届国际岩石力学青年学者论坛)

会议地点: 北京

会议语种:英文

页码: 445-449

在线出版日期: 2014-11-08（万方平台首次上网日期，不代表论文的发表时间）