Field measurement and numerical simulation of the influence of blasting excavation on adjacent buried pipelines

The blasting seismic waves generated by tunnel blasting will have an adverse effect on adjacent buried pipelines, which increasing the difficulty of subway construction. In this paper, taking the section of blasting excavation in Dalian Metro Line 1 as the engineering background, the attenuation law of blasting seismic wave in the soil and the vibration response of the buried pipeline are systematically studied by means of field measurement and numerical simulation. The deformation monitoring of the pipeline shows that the time curve of the pipeline and the surface settlement are distributed exponentially, and the trend of them is the same. The attenuation law of seismic wave obtained by numerical simulation is basically consistent with the measured results, which indicates that it is feasible to study the blasting vibration effect by numerical simulation. The Sa Rodolfo J Ki prediction formula is established according to the measured data, which can reflect the propagation law of the blasting seismic wave. It can provide some basis for the construction of subway tunnels at the subsequent stage.