The water pressure test after adopting cement grouting proves, although the permeability of rock improves, it can not achieve the design requirement.
采用水泥灌浆后所做的压水试验证明，岩土的渗透性能虽然得到改善，但是达不到设计要求。
2
The groutability of jointed rock should be increased by the grouting pressure because of the elastic expansion of grouted fractures.
岩体的可灌性不仅取决于受灌裂隙的初始开度，还与在灌浆压力作用下裂隙的弹性扩张值有关。
3
The finite element method is used to calculate and analyze the stress and the displacement of host rock when the openings is under the jet grouting support.