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

Authors: Haitao Wang; Yuedong Wu; Hui Jin; Jinqing Jia; Kai Wang

Addresses: School of Civil Engineering, Dalian Jiaotong University, Dalian Liaoning 116028, China ' School of Civil Engineering, Dalian Jiaotong University, Dalian Liaoning 116028, China ' School of Civil Engineering, Dalian Jiaotong University, Dalian Liaoning 116028, China ' State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian Liaoning 116024, China ' State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian Liaoning 116024, China

Abstract: 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.

Keywords: subway tunnel; blasting excavation; buried pipeline; field monitoring; numerical simulation.

DOI: 10.1504/IJCIS.2019.096572

International Journal of Critical Infrastructures, 2019 Vol.15 No.1, pp.70 - 89

Available online: 11 Oct 2018 *

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