地下工程与普通工程相比,有许多风险因素。为了把所有风险降低到可以控制的程度,必须对每个风险的个别因素进行具体研究。即使不能把风险降为零,也要尽量使风险变得最小。有2种风靡世界的土工技术:地下连续墙和旋喷注浆,开辟了20世纪中叶似乎不可能实现的在软弱地层中开发地下空间的可能性。 Underground Engineering Compared with ordinary engineering, there are many risk factors. In order to reduce all the risks to a manageable level, it is necessary to conduct a specific study on the individual factors of each risk. Even if the risk can not be reduced to zero, but also try to minimize the risk. There are two kinds of geotechnical techniques swept the world: underground diaphragm walls and rotary grouting, opening up the possibility of developing underground spaces in soft formations that seem impossible in the mid-20th century.