随着我国交通系统的快速发展，临近埋地管道施工的工程案例越来越多，隧道开挖不可避免地会影响管道的安全。为研究隧道开挖变形及爆破扰动耦合作用下临近埋地管道的安全性，以深圳市大山陂1号隧道施工为背景，建立管-土-隧动静耦合作用模型以分析不同管道内压、围岩弹模、管隧间距、单段最大装药量条件下埋地管道的应力和振速变化规律，进一步引入Morris筛选法对各因素的影响程度进行评价分析。结果表明：管道应力和管道振速受管道内压和单段最大装药量的影响最大；管道应力峰值随着管道内压的增大、围岩弹模的增大、管隧间距的减小和单段装药量的增大而增大；管道远离拉应力峰值的区域，在各种参数的综合影响下，可能出现压应力。
Abstract
With rapid development of China’s transportation system, there are more and more project cases near buried pipeline construction. Tunnel excavation can inevitably affect safety of buried pipeline. Here, to study safety of adjacent buried pipeline under coupling effect of tunnel excavation deformation and blasting disturbance, a pipe-soil-tunnel dynamic-static coupled model was established to analyze variation laws of stress and vibration velocity of buried pipeline under factors of pipeline internal pressure, surrounding rock elastic modulus, pipe-tunnel spacing and single segment maximum charge. Morris screening method was further introduced to evaluate and analyze influence degree of each factor. The results showed that pipeline stress and vibration velocity are most affected by pipeline internal pressure and single segment maximum charge; the peak stress of pipeline increases with increase in internal pressure, elastic modulus of surrounding rock and single segment charge and decrease in pipe-tunnel spacing; when the pipeline is far away from the area with peak value of tensile stress, compressive stress may appear under comprehensive influence of various parameters.
关键词
隧道 /
开挖变形 /
爆破 /
埋地管道 /
管-土-隧耦合作用
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Key words
tunnel /
excavation deformation /
blasting /
buried pipeline /
pipe-soil-tunnel interaction
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参考文献
［1］ROBERT D J. A modified mohr-coulomb model to simulate the behavior of pipelines in unsaturated soils［J］. Computers &Geotechnics, 2017, 91:146-160.
［2］罗驰,杨新安,罗都颢,等.一种改进型隧道爆破模拟方法及其验证分析［J］.振动与冲击,2019,38(17):260-267.
LUO Chi, YANG Xin’an, LUO Duhao, et al. An improved tunnel blast simulation method and its verification［J］. Journal of Vibration and Shock,2019,38(17):260-267.
［3］KONUK I. Coupled lateral and axial soil-pipe interaction and lateral buckling. Part I: formulation［J］. International Journal of Solids & Structures, 2017,132/133:114-126.
［4］MARSHALL A M, KLAR A, MAIR R J, et al. Tunneling beneath buried pipes: view of soil strain and its effect on pipeline behavior ［J］. American Society of Civil Engineers, 2010, 136(12):1664-1672.
［5］KLAR A, ELKAYAM I,MARSHALL A M. Design oriented linear-equivalent approach for evaluating the effect of tunneling on pipelines［J］. Journal of Geotechnical & Geoenvironmental Engineering, 2016, 142(1):04015062.
［6］SHI J W, WANG Y, NG C W W. Three-dimensional centrifuge modeling of ground and pipeline response to tunnel excavation［J］. Journal of Geotechnical & Geoenvironmental Engineering, 2016, 142(11):04016054.
［7］吴铭芳.邻近隧道爆破施工对输油管道影响范围研究［J］.地下空间与工程学报,2016,12(增刊2):703-706.
WU Mingfang. Research on the influence scope of adjacent tunnel blasting construction on oil pipeline［J］. Chinese Journal of Underground Space and Engineering,2016,12(Suppl. 2):703-706.
［8］舒懿东,彭佳伟.隧道爆破对不同埋深的埋地管道动力响应研究［J］.路基工程,2017(6):59-62.
SHU Yidong, PENG Jiawei. Study on dynamic response of buried pipeline with different buried depths by tunnel blasting［J］. Subgrade Engineering,2017(6):59-62.
［9］JIANG N，GAO T，ZHOU C B，et al. Effect of excavation blasting vibration on adjacent buried gas pipeline in a metro tunnel［J］. Tunnelling and Underground Space Technology，2018,81:590-601.
［10］郝郁清. 爆破地震波对埋地燃气管道的动力响应研究［D］.武汉：武汉理工大学,2019.
［11］赵泽霖,焦光伟,周建庭,等. 基于土弹簧模型的埋地输油管道地震响应数值模拟［J］.压力容器,2014,31(11):50-55.
ZHAO Zelin, JIAO Guangwei, ZHOU Jianting, et al. Numerical simulation on seismic response of buried oil pipeline based on soil spring model［J］.Pressure Vessel Technology, 2014, 31(11):50-55.
［12］梁博. 爆炸载荷下并行埋地输气管道动力响应分析［D］.成都：西南石油大学,2018.
［13］郑爽英,邹新宽.下穿隧道爆破振动作用下石油管道的安全性评价［J］.爆破,2015,32(2):131-137.
ZHENG Shuangying, ZOU Xinkuan. Safety evaluation of blasting vibration effect undercrossing tunneling on buried oil pipeline［J］. Blasting,2015,32(2):131-137.
［14］王新敏. ANSYS工程结构数值分析［M］.北京:人民交通出版社, 2007.
［15］佘艳华. 机械冲击荷载对邻近埋地管道的影响及控制研究［D］.绵阳：中国工程物理研究院,2012.
［16］黄亚兵. 基于隧道爆破全时程荷载函数的地震动效应及其应用研究［D］. 长沙：中南大学, 2017.
［17］高颖会,沙晓军,徐向化,等.基于Morris的SWMM模型参数敏感性分析［J］.水资源与水工程学报,2016, 27(3):87-90.
GAO Yinghui, SHA Xiaojun, XU Xianghua, et al. Sensitivity analysis of SWMM model parameters based on Morris method［J］. Journal of Water Resources and Water Engineering,2016, 27(3):87-90.
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