| As the speedy development of transportation,and the advantages of immersed tunnel inthe cross-river,cross-sea projects: strong adaptability to hydrogeological conditions, easy toconnect with the roads on both sides of the water channel due to the allowance ofshallow-buried, short duration of construction, strong adaptability to construction site andsection conditions, the immersed tunnel is put into use worldwide. The time when immersedtunnels are being studied in our country is late comparatively, but they are rapid developedthese years, more than ten immersed tunnels have been built in our country by now. Theimmersed tunnel theory study is stillfallen behind, so how to improve of the capacity of theimmersed tunnel theory studying is a major task in our country.This paper is dealing with the construction technologies of immersed tunnel, axis controland adjusting technologies, the precision control during the installation and connection status，which includes the choose of the appropriate installation method to adaptthe hydrogelogicaland water channel condition, the precision control method for the tunnel positioning，and theconnection between two tunnels. After the pumping water out the connection section, the endof the tunnel section will bare high water pressure, the adjust system for tunnel installation isusually not capable of the axis deviation adjustment, the method of pushing the tunnel in theinner connection, or transposition installation at cross direction is adopted. This paper is tocompare the adjusting method,proceed with data analysis of the adjusting method,and tosimulate and analyze, calculate the tunnel section and GINA water stopping, which canprovide the theory bases for the immersed tunnel axis adjusting, and will be a good referencefor the immersed tunnel construction. |
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