Li Hongsheng, Zhu Yuanlin, Fracture MechanicsofFrozenSoil and Its Application, China Ocean Press, 2002.
李洪升、朱元林，冻土断裂力学及其应用，北京：海洋出版社，2002。
2
By regarding testing mechanics behaviors offrozensoil frost heave as the research background, a hydraulic force control system was designed on the basis of valve control asymmetric cylinder.
以测试冻土冻胀的力学行为为研究背景，设计了一套基于阀控非对称缸的液压力控制系统。
3
Supposing the defects as the initial crack, using the theory and testing method of fracture mechanics, the nonlinear fracture process and character offrozensoil are investigated.