摘要
堤防渗漏隐患是土质堤防主要危害之一,在缺少设计施工与历史沿革加固等资料的堤段,地球物理探测结果的解译缺少物性依据,易产生多解性甚至错误判断。本文将时移高密度电法应用到堤防结构性隐患探测中,通过正演模拟时移高密度电阻率法的探测效果,分析总结停水期与行水期不同水位下反演地电断面的电性特征与变化趋势,推断渗漏通道的位置与规模,为隐患排查提供依据,经实例验证,取得了理想的探测效果。
The hidden danger of embankment leakage is one of the main hazards of soil embankment.In the embankment section lacking data such as design,construction and historical evolution reinforcement,the interpretation of geophysical detection results lacks physical basis,which is easy to produce multiple solutions and even wrong judgement.In this paper,the time-lapse high-density resistivity method is applied to the detection of embankment structural hidden danger,and the detection effect of time-lapse high-density resistivity method is simulated by using forward modeling.The electrical characteristics and variation trend of the inversion geoelectric section under different water levels in the water cut-off period and water flow period are analyzed and summarized,and the location and scale of the leakage channel is inferred,so as to provide a basis for hidden danger investigation.The example shows that the ideal detection effect is achieved.
作者
许彩琦
张建智
Xu Caiqi;Zhang Jianzhi(Fundamental Geological Survey Institute of Ningxia,Yinchuan 750021,China;Research Institute of Coal Geophysical Exploration,CNAGG,Zhuozhou 072750,China)
出处
《工程勘察》
2023年第2期73-78,共6页
Geotechnical Investigation & Surveying
基金
宁夏回族自治区重点研发计划项目(2021BEG03027)。
关键词
堤防隐患
堤防渗漏
时移高密度电法
无损探测
正演—反演
dike hidden danger
dike leakage
time-lapse high-density resistivity method
non-destructive detection
forward-inversion
