Study On The Regulations Of The Effects On Environment Caused By Municipal Multi-tunnels Construction

The research of underground engineering is necessary and worthy because its indetermination. Along with the development of communication network and transportation pressure in the ground increment, the problem of environment effects because construction which need to be solved. At the present time, study on municipal multi-tunnels is more shortage than hydroelectric and factory building. Underground engineering construction is inevitably influence to surroundings of environment, and detection and summary regular pattern of influence will be advantageous to construction and control. Aim at Guangzhou XiaoBei station, which is consist of complicated holes structure in complex geologic strata relation. This text based on numerical method, summarized how to build the numerical model of complicated underground tunnels which are cross each other with different size and shape, especially solved the interaction of different size arcs that is very hard to modeling. Combined with the site-monitor data, this paper analyses the regulation of the earth's surface settlement, the decline and the earth's surface horizontal displacement caused by tunneling. This paper also studies the shape of curvature of two parallel tunnels during its excavation. At the same time, this thesis summaries the influence regulations of the pile displacement and foundation settlement caused by tunnel excavation. The optimal construction project is got by the contrast of three kinds of construction projects analysis. Some suggestions aimd at the problem of XiaoBei station are given at last.