肖坤林,闫晓录,张健,贾小杰,刘媛媛.综合物探方法在复杂条件下场地安全性调查中的应用[J].地质找矿论丛,2024,39(2):285-292
综合物探方法在复杂条件下场地安全性调查中的应用
Application of integrated geophysical exploration methods to safety investigation of working site with complex conditions
投稿时间:2023-11-27  修订日期:2024-04-30
DOI:10.6053/j.issn.1001-1412.2024.02.017
中文关键词:  场地安全性调查  岩溶塌陷  微动法  高密度电法  河北唐山
英文关键词:site safety investigation  karst collapse  microtremor survey  high-density electrical survey  Tangshan city in Hebei Province
基金项目:
作者单位
肖坤林 中国冶金地质总局地球物理勘查院, 河北 保定 071000 
闫晓录 中国冶金地质总局地球物理勘查院, 河北 保定 071000 
张健 中国冶金地质总局地球物理勘查院, 河北 保定 071000 
贾小杰 中国冶金地质总局地球物理勘查院, 河北 保定 071000 
刘媛媛 中国冶金地质总局地球物理勘查院, 河北 保定 071000 
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中文摘要:
      河北省唐山市某校拟建的建筑物位于第四系覆盖的岩溶发育区,该场地地质条件复杂,覆盖层较厚,且施工区域狭小,采用单一的物探方法很难取得理想的效果。本文采用微动法和高密度电法对场地进行勘察,查明了场地内的溶洞围岩构造特征、覆盖层厚度、可能存在的岩溶发育区及其它地质异常点;在场地勘察施工中,通过优化作业方式来改善原始数据信噪比,有效地指导了勘察工作。综合物探方法在复杂场地勘察中具有优越性,可为建筑物地基处理方案提供可靠依据。
英文摘要:
      A building of a school proposed in Tangshan city, Hebei province, is located in an area where karst is develpoed and covered with relatively thick Quaternary sediment thus the geological condition is complicated, in addition to the thick cover the construction area is narrow and single geophysical exploration method can not obtain ideal result. Microtremor survey and high-density electrical survey are integrated to investigate the site. Structural characteristics of surrounding rock of karst, thickness of the cover and the possible karst development area and other geological anomalies are identified. During operation the SNR of the original data is improved by optimizing the operation mode. The construction site investigation is effectively guided with the results. Integration of geophysical exploration methods is superior in complex site investigation and can provide reliable basis for building foundation treatment scheme.
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