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

IF 0.5 Q4 ENGINEERING, MULTIDISCIPLINARY International Journal of Critical Infrastructures Pub Date : 2019-01-01 DOI:10.1504/IJCIS.2019.10016810

Haitao Wang, Yuedong Wu, Jin Hui, J. Jia, Kai Wang

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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.

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爆破开挖对邻近埋地管线影响的现场测量与数值模拟

隧道爆破产生的爆破地震波会对相邻埋地管线产生不利影响，增加了地铁施工难度。本文以大连地铁1号线爆破开挖段为工程背景，通过现场实测和数值模拟等方法，系统研究了爆破地震波在土体中的衰减规律和埋地管道的振动响应。管道的变形监测表明，管道的时间曲线与地表沉降呈指数分布，两者的变化趋势相同。数值模拟得到的地震波衰减规律与实测结果基本一致，表明通过数值模拟研究爆破振动效应是可行的。根据实测数据，建立了能反映爆破地震波传播规律的Sa Rodolfo J Ki预测公式。可为后续地铁隧道的施工提供一定的依据。

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来源期刊

International Journal of Critical Infrastructures ENGINEERING, MULTIDISCIPLINARY-

CiteScore

2.00

自引率

16.70%

发文量

期刊介绍： IJCIS is an inter-disciplinary and refereed journal that provides a professional and scholarly forum for cross-learning between different scientific and technological disciplines, and between business and economic, as well as between societal and managerial, disciplines in the area of critical infrastructures. Critical infrastructures are networks for the provision of telecommunication and information services, energy services, water supply, transportation of people and goods, banking and financial services, government services and emergency services. By addressing commonalities and interrelationships between the various sectors, IJCIS enables scientists, policy makers and professionals in the field to learn from experiences in other countries and in other infrastructure sectors.