岩土工程

高密度电法在挡墙测量中的应用

  • 周冬冬 ,
  • 刘建刚 ,
  • 蒋甫玉
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  • 河海大学 地球科学与工程学院,南京 210098
周冬冬(1990-),男,江苏盐城人,硕士研究生,主要从事地质工程研究,(电话)13505158312(电子信箱)ddhebian@126.com。

收稿日期: 2014-06-04

  网络出版日期: 2015-02-06

Application of High-density Electrical Method to the Measurement of Retaining Wall

  • ZHOU Dong-dong ,
  • LIU Jian-gang ,
  • JIANG Fu-yu
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  • School of Earth Science and Engineering, Hohai University, Nanjing 210098, China

Received date: 2014-06-04

  Online published: 2015-02-06

摘要

常规电法测量挡墙存在施工效率低的缺点,而高密度电法主要是以各种地下地质体的电性差异为基础,根据在施加电场作用下地层传导电流的分布规律,推断地下具有不同电阻率地质体的赋存情况,测量效率优于常规电法。将高密度电法用于南十里长沟主流左岸挡墙测量中,结果表明:挡墙高度约为2.3 m,墙后土体中潜水位埋深为3.1~3.8 m,挡墙体内部及内侧土体中空洞总体不发育,局部存在欠密实或空洞,挡墙厚度变化不大。高密度电法所得检测结果与地质雷达所得结果以及开挖所得结果一致,表明高密度电法应用于挡墙测量中是可行的。

本文引用格式

周冬冬 , 刘建刚 , 蒋甫玉 . 高密度电法在挡墙测量中的应用[J]. 长江科学院院报, 2015 , 32(2) : 68 -71 . DOI: 10.3969/j.issn.1001-5485.2015.02.015

Abstract

Ordinary electrical method is inefficient in the measurement of retaining wall, while high-density electrical method has better efficiency as it is based on the electrical prop of different underground geological bodies according to the distribution regularity of conduction current of strata. Therefore it was used in the measurement of retaining wall at the left bank of mainstream Nanshilichanggou River, and the result showed that, the height of the wall is about 2.3m, the depth of potential water level in the earth behind the wall is about 3.1-3.8m, cavities in the retaining wall and the earth are found in partial positions but are not developed in general, the thickness of the wall does not change a lot. The result is consistent with those from geological radar and practical excavation, indicating that high-density electrical method is feasible to measure retaining wall.

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