Study On The Method Of Long Distance Continuous Non Excavation Laying Line

For the gas industry, the non excavation technology is mainly used in the gas pipeline Road, the river crossing and the repair of the old pipeline, etc.. Pipeline crossing roads and rivers of trenchless construction mainly includes tamping pipe method, pipe jacking method, shallow buried excavation and directional drilling crossing four methods. In recent years, the city of Beijing city construction with each passing day, the construction of gas pipeline is very fast. However, there are some limitations in the existing construction method of the old excavation and laying pipelines, which mainly shows in the aspects of preventing traffic, affecting the environment and people’s life. At present, the construction method of non excavation laying gas pipeline is mainly applied to the local position of crossing road, railway, river, and in the city center area and densely populated area. The use of open mode is very large, and the contradiction between the increasingly intensified conflicts is also very high. But the long distance continuous non excavation method in the urban area of the laying of gas pipelines is more rare, the method should have the design, construction technology measures and security measures are to be carried out more systematic study. This paper through the study initially established pipe jacking, shallow buried excavation, directional drilling method in continuous non excavation laying pipeline construction in the use of rules; form a complete technical measures can guide future similar project design work; for construction and security measures put forward some key elements and reference for the construction management.