Research On The Pipe Jacking Technology In Special Hard Rock Of Urban Road

This paper has carried on the system research on static micro shock blasting technology,mainly including the application situation of the excavation pipe jacking project in urban underground space.And This technique applies to the the hard rock and the particularly hard stone.By blasting vibration test and regression analysis,blasting seismic wave propagation attenuation law of in the Shiliuli river tunnel blasting operation section.The response characteristics of blasting vibration of building were obtained,by the adjacent building blasting vibration test and mechanical analysis.The blasting mechanics analysis model of building of were concluded,when the earthquake load.According to the engineering test,determine the low voltage quasi static blasting charge coupling coefficient.Adjacent hole of blasting crack guiding role at the same time blasting has been proved by numerical simulation.Low quasi static blasting technology based on engineering practice,determines the low voltage quasi static blasting construction technology.Through the low voltage quasi static blasting technology and the pipe jacking technology,solving the pipe jacking construction in the hard rock and the particularly hard stone area.In conclusion,subject effectively solve the difficult problem of pipeline laying technology in the stone road section of urban,and provide a reference basis for similar projects.The economic and social benefit of subject is remarkable...