Study On The Influence Of Wanxing Road Tunnel Blasting Vibration On Adjacent Buildings

The construction of tunnel construction in Chongqing is often based on blasting,and the vibration effect of blasting can have a certain effect on the surrounding buildings.Therefore,the prevention of the damage of the tunnel blasting to the building has become an important project in the current tunnel project.This paper is based on the project of Wan xing road tunnel construction.Through field monitoring and theoretical analysis,the effects of tunnel blasting on nearby buildings are studied mainly:1)The principle and type of blasting seismic wave are discussed,and the vibration effect of blasting seismic wave is analyzed.2)to formulate the plan for the monitoring of the explosion of Wanxing road in Jiangbei district.For the monitoring of the surrounding buildings that tunnel blasting construction under the structure of the vibrating velocity as well as the main vibration frequency field measured data,and statistical analysis of the vibration velocity and frequency data.3)According to the actual situation of Wanxing road tunnel in Jiangbei district,Chongqing,ANSYS/LS-DYNA numerical analysis model is used to calculate the peak speed of the tunnel under the vibration of blasting.By analyzing the results of numerical calculation between tunnel and construction level 15 metres buried 20 meters deep,in the case of 30 kg explosive dosage house and maximum stress value of vibration velocity and acceleration are studied.