太原盆地交城断裂带北段工程避让范围研究  

Research on the Avoidance Range of the Northern Sectionof the Jiaocheng Fault Zone in the Taiyuan Basin

作　　者：曾金艳[1,2] 李宏伟[1,2] 陈文 李自红[1,2] ZENG Jinyan;LI Hongwei;CHEN Wen;LI Zihong(Shanxi Earthquake Agency,Taiyuan 030021,China;National Continental Rift Valley Dynamics Observatory of Taiyuan,Taiyuan 030025,China;Beijing Meichen Construction Seismic Engineering Co Ltd,Beijing 100021,China)

机构地区：[1]山西省地震局,太原市030021 [2]太原大陆裂谷动力学国家野外科学观测研究站,太原市030025 [3]北京美辰建筑抗震工程有限公司,北京市100021

出　　处：《大地测量与地球动力学》2024年第9期919-925,共7页Journal of Geodesy and Geodynamics

基　　金：山西省基础研究计划(20210302123361);太原大陆裂谷动力学国家野外科学观测研究站项目(NORSTY2022-01)。

摘　　要：在系统分析和整理交城断裂带北段探测成果的基础上,采用地质探槽剖面法、经验统计法及数值模拟法,预测评估交城断裂带北段在发生最大潜在震级M_(S)7.2地震时的同震地表破裂带宽度,探讨不同方法结果的精度和可靠性,并提出采用综合加权方法确定交城断裂带北段地表破裂带宽度。在此基础上综合考虑探测方法精度、断层上下盘效应等影响因素,确定交城断裂带北段工程避让区为F_(1)^(1)迹线西侧外延15.0m至F_(1)^(2)迹线东侧外延86.9m范围。该结果对交城断裂带沿线的国土规划利用、建(构)筑抗震设计具有一定的指导意义,该方法可为同类研究提供借鉴。This article is based on the detection results of the Jiaocheng fault zone in different projects,and through systematic analysis and organization,uses three methods:geological exploration trough profile method,empirical statistics method,and numerical simulation method,to evaluate the risk of surface rupture and the width of the coseismic surface rupture zone in the northern section of the fault zone during the occurrence of the maximum potential magnitude M_(S)7.2 earthquake.We analyze the reliability of the results obtained by the three methods was analyzed,and a weighted comprehensive average method was proposed to calculate the width of the coseismic surface rupture zone of the fault.On the basis of considering the accuracy of detection methods,the range of avoidance zones for the Jiaocheng fault zone during project site selection is determined to be on both sides of the fault zone,with an extension of 15.0 m on the west side of the F_(1)^(1) trace to 86.9 m on the east side of the F_(1)^(2) trace.This result has certain reference significance for land planning and utilization along the Jiaocheng fault zone.The method can provide reference for similar research.

关 键 词：交城断裂带北段 地质探槽剖面法 经验公式法 数值模拟法 地表破裂带 

分 类 号：P315[天文地球—地震学]