综合物探在水库渗漏探测中的应用

doi:10.11720/wtyht.2020.1425

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Abstract

Influenced by normal fault F2 of right abutment,karst is extensively developed in a reservoir and, as a result, there exists the leakage problem. Although several anti-seepage treatments have been conducted,leakage problem still exists in the near-dam reservoir area,and the situation has been getting worse and worse. In this study. the seepage of the reservoir was detected by flow field method,natural electric field method and high density resistance method. According to the results obtained, comprehensive geophysical prospecting method can accurately obtain the location information of seepage source and seepage channel of the reservoir; the sealing quality of old tunnels is poor and there are leakage problems, which also leads to concentrated seepage and large-scale scattered immersion of the downstream side dam body; the low mountain body on the right bank of the dam has seepage entrance and may be connected with the spring water point at the foot of the downstream mountain; the F2 fault zone on the right abutment of the dam has poor imperviousness,and there exists a leakage passage connected with the concentrated seepage points at the outcrop of downstream faults.

Key words： seepage detection reservoir flow field method natural electric field method high density resistivity method seepage channel

Received: 29 August 2019 Published: 22 April 2020

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	Articles by authors
	Ji-Hua YAO
	Shi-Jun LUO
	Wen-Jie SONG
	Yuan LIU
	Wen-Gang ZHAO
	Hui-Zhu LYU

Cite this article:

Ji-Hua YAO,Shi-Jun LUO,Wen-Jie SONG, et al. The application of comprehensive geophysical exploration method to leakage detection of a reservoir[J]. Geophysical and Geochemical Exploration, 2020, 44(2): 456-462.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2020.1425 OR https://www.wutanyuhuatan.com/EN/Y2020/V44/I2/456

Site layout of geophysical survey line and schematic diagram of leakage inlet and outlet of reservoir dam area

Resistivity of rock and soil in engineering area

Main detection methods and instruments

Spontaneous potential maps of dam lines Ⅰ,Ⅱ and Ⅲ

Inversion results of high density resistivity of α line

Inversion results of high density resistivity of β line

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