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岩体的初始应力场,是指工程施工开挖之前岩体中各空间点的应力状态、分布规律及其量级大小,它是在地壳形成的亿万年过程中,以及地壳形成以后的各个地质时期内逐渐形成的。和岩体的其他物理力学性质一样,岩体初始应力是客观存在于岩体之中,亦应是岩体性质的一个极其重要的指标。但在以往的工程建设中,往往忽略岩体初始应力对工程建筑物的影响,不少工程事故的发生,均与此有关。因而自六十年代起人们才
The initial stress field of rock masses refers to the stress state, distribution law and magnitude of each space point in the rock mass before the excavation of the project. It is in the process of billions of years of crust formation and after the formation of the crust. Gradually formed during the geological period. As with other physical and mechanical properties of the rock mass, the initial stress of the rock mass is objectively present in the rock mass and should also be an extremely important indicator of the rock mass properties. However, in the past construction projects, the influence of the initial stress of the rock mass on the engineering structure was often neglected. The occurrence of many engineering accidents was related to this. So people have been since the 1960s