Stochastic Medium Model of Ground Surface Movements due to Foundation Excavation

摘要

Stochastic medium model belongs to in-continuous medium theory. Open-pit slope and the slope are important excavation project that human utilize nature. In this paper, stochastic medium model was used in the foundation pit engineering ground surface movements. The adjacent ground surface movement and deformation due to dewatering and around body losing cross bloster is analyzed. Since any excavation will cause the surrounding surface movement and deformation, however, any ground and underground construction (structures) have certain structural strength, which has a certain resistance to the ground displacement and deformation capacity [1]. If the deformation of the ground is expected that the results were less than the maximum permitted Level protection of building structures deformation value, the building structures will not change significantly damage, or can be made by a simple process and does not affect the normal use; if the deformation of the ground the results are expected to exceed the maximum allowable Level protection of building structures deformation value, you can take the reinforcement of building structures, pre-reinforcement measures or adjust excavation programs to achieve conservation purposes. People study model of surface movement and deformation is caused by excavation, especially from the gravity stress research underground coal mining began from underground mines. In China, the study of surface coal movement law has made considerable progress in the establishment based on probability integration method, negative exponential function method and the typical curve of surface deformation prediction methodology. Which is particularly widespread application of probability integration method, which greatly promoted the development of the cause of the "three under mining," and China's entry into the list of international advanced in this area, [2, 3, 4, 5].