Discussion on Construction Technology of Drainage Pipe Jacking under Urban Dynamic Load Road:Taking the Engineering in Shifang Area as an Example
When the pipeline passes through sensitive areas such as dynamic load roads,it is easy to cause surrounding soil deformation,resulting in settlement and uplift around the soil.In order to solve the shortcomings of traditional pipe jacking technology and better realize the safe pipe jacking through sensitive areas such as urban roads in complex environments,taking the pipe jacking construction of supporting road drainage projects in the east of Shifang City as the background,a construction method of underground drainage pipeline jacking through dynamic load pavement is studied.The method includes jacking,tunneling,linear control and grouting system.Through numerical simulation and safety assessment before jacking,the jacking process is optimized.Engineering practice shows that after pipe jacking,the deformation of subgrade and pavement at the top of the pipeline area is small,which meets the requirements of construction deformation control.
drainage pipepipe jacking constructionsafety assessmentlaser measurementpre-reinforcement by grouting
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