5Luger H.J.,Hergarden,H.J.A.M.Directional Drilling in Soft Soil:Influence of Mud Pressures,Proceedings of the Third International Conference on Trenchless Technology-No Dig 88[J].International Society for Trenchless Technology,1988,155-161.
6Detournay,E.M.Two Dimensional Elastoplastic Analysis of a Deep Cylindrical Tunnel under Non-hydrostatic Loading[D].Ph D Thesis,University of Minnesota,1983.