The slot elements are set up to simulate slot between lining and rock mass and the 3 D elastoplastic FEM is adopted with multi stage load and changible stiffness iteration.
在压力隧洞充水运行时，对衬砌与围岩之间的接缝采用接缝空腔单元模拟。
2
In the prevention techniques of fracture shaft lining in the Yellow and Huai River areas, the channeling of circular relieving slot is one of the key techniques.