Influence Of Metro Construction With Mining Method On Underground Pipelines

China's metro time is coming. The subway engineering will give the city of great economic benefits, social benefits and military benefits, at the same time, cause a series of environment problems on geotechnical engineering. As the urban subway network has kept on improving and the municipal pipeline network gradually complicated, the subway will run through buried pipeline in a variety of ways; tunneling inevitably will trigger disturbance to adjacent underground pipeline, affect its use functions, even cause destruction. Keeping safety of the tunnel and use functions of the pipeline is not only the starting point but also the ultimate goal. If too pushy, the displacement of strata caused by tunnel excavation may harm ground building and underground pipeline, even lead to a catastrophe. If too conservative, no doubt, it will greatly increase needless manpower, material resources. Therefore, further study on the effect of underground pipeline caused by tunnel excavation is very necessary and meaningful.With the construction of interval tunnel from DIANBIAO FACTORY station to QINGBIN PARK station belong to Harbin Metro Line NO.1 as the background, based on 3D finite element software-MIDAS/GTS, and reasonable simplification and assumptions, this paper uses numerical simulation method, changes various parameters in order to study the influence and discipline of adjacent underground pipeline caused by tunnel excavation. And the main content and achievements are as follows:1. Sum up the basic principles of mining method and related knowledge about underground pipeline.2. Study the influenced and discipline of adjacent underground pipeline which run vertically across the tunnel being excavated, through changing all kinds of factors, including relative location between pipeline and tunnel, parameters of the pipeline itself, soil parameters and sequence of excavation.3. Study the influenced and discipline of adjacent underground pipeline which runs parallel across the tunnel being excavated, through changing factors mentioned above.4. Sum up the control standards of underground pipeline, monitoring means and control measures.