Research on Key Technology of Municipal Pipeline Pipe Jacking Crossing Municipal Roads
Due to the large cumulative settlement of embankment and poor construction effect,this paper studies the key technology of municipal pipeline pipe jacking crossing municipal road.Install pipe jacking hydraulic jack and jacking guide rail in the working well to jack into the predetermined position;select appropriate working well length,and support the wall of the construction well;fix the guide rail on the bottom of the construction well,add cushion blocks to ensure the stable connection;select back structure reasonably;monitor the deviation of the pipeline during jacking process,correct the deviation,and control the settlement through key technologies such as settlement prediction and pressure control;weld the machine head and pipe section,and complete the pipe jacking construction.The test results show that the cumulative settlement of the embankment of the five test groups is below 30 mm,which meets the expectations and achieves good construction results.
municipal pipelinepipe jackingmunicipal roadguide rail
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