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Earth and rockfill dam leakage diagnosis method based on Wenner joint inversion

A technology of combined inversion and diagnosis method, which is applied in the fields of permeability/surface area analysis, measuring device, suspension and porous material analysis, etc. It can solve problems such as abnormal seepage and leakage diseases of earth-rock dams, so as to improve work efficiency and accuracy recognition effect

Active Publication Date: 2020-01-17
ZHEJIANG INST OF HYDRAULICS & ESTUARY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The filling materials of earth-rock dams are prone to abnormal seepage phenomenon in the harsh conditions of alternation of dryness and wetness and great disparity between static and dynamic conditions for a long time, and the common weak links even evolve into seepage damage, which makes the problem of seepage disease of earth-rock dams particularly prominent, and seepage damage has spatial concealment Due to the characteristics of uncertainty, uncertainty in time, and randomness of distribution, the potential safety hazards of earth-rock dams with many points, wide areas, large volumes, and complex working conditions have become the biggest shortcoming of water conservancy standardization management, and safe operation is facing huge challenges.

Method used

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  • Earth and rockfill dam leakage diagnosis method based on Wenner joint inversion
  • Earth and rockfill dam leakage diagnosis method based on Wenner joint inversion
  • Earth and rockfill dam leakage diagnosis method based on Wenner joint inversion

Examples

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Embodiment 1

[0034] A method for diagnosing leakage of earth-rock dams based on Wenner joint inversion is used to diagnose the hidden danger of dam A( figure 1 ), the crest of Dam A is 63 meters long, 20 meters high, and 6 meters wide. The gravel layer is within 0.03 meters of the surface layer. The resistivity of the gravel layer is 300Ω·m, and the resistivity of the dam body is 100Ω·m m, and the mountain resistivity is 500Ω·m. The actual location parameters and physical parameters of the leakage point in A are distance 30m, buried depth 7m, scale 3m×2m and resistivity value 10Ω·m.

[0035] A 63m-long electrical survey line is set at the dam axis of A Dam. There is 1 channel electrode in the meter, the channel electrode located on one of the endpoints of the electrical method measuring line is named channel electrode 1, the channel electrode 1m away from the endpoint is named channel electrode 2, and the channel electrode 2m away from the endpoint is named It is the channel electrode 3,...

Embodiment 2

[0042] A method for diagnosing leakage of earth-rock dams based on Wenner joint inversion is used to diagnose dam B with contact zone leakage hazards ( figure 2 ), the crest of Dam A is 63 meters long, 20 meters high, and 6 meters wide. The gravel layer is within 0.03 meters of the surface layer. The resistivity of the gravel layer is 300Ω·m, and the resistivity of the dam body is 100Ω·m m, and the mountain resistivity is 500Ω·m. The actual location parameters and physical parameters of the leakage point in A are distance 5.8m, buried depth 7m, scale 10m×13m and resistivity value 10Ω·m.

[0043] A 63m-long electrical survey line is set at the dam axis of A Dam. There is 1 channel electrode in the meter, the channel electrode located on one of the endpoints of the electrical method measuring line is named channel electrode 1, the channel electrode 1m away from the endpoint is named channel electrode 2, and the channel electrode 2m away from the endpoint is named It is the ch...

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Abstract

The invention relates to an earth and rockfill dam leakage diagnosis method based on Wenner joint inversion, belongs to the field of reservoir dam leakage diagnosis, and also belongs to the field of engineering geophysical detection. The method comprises the steps of: collection of an earth and rockfill dam Wenner joint data volume, joint inversion imaging of the Wenner data volume, correction ofan earth and rockfill dam leakage inversion result and determination of a leakage point according to an image. The method has the advantages that one-sidedness of interpretation and response of different device data bodies to the earth and rockfill dam hidden danger is avoided, accurate identification of the hidden danger body is achieved, and the field work efficiency is improved.

Description

technical field [0001] The invention relates to a method for diagnosing leakage of earth-rock dams based on Wenner joint inversion, which belongs to the field of hidden danger diagnosis of reservoir dam leakage and also belongs to the field of engineering geophysical detection. Background technique [0002] The filling materials of earth-rock dams are prone to abnormal seepage phenomenon in the harsh conditions of alternation of dryness and wetness and great disparity between static and dynamic conditions for a long time, and the common weak links even evolve into seepage damage, which makes the problem of seepage disease of earth-rock dams particularly prominent, and seepage damage has spatial concealment The safety hazards of earth-rock dams with many points, wide areas, large volumes and complex working conditions have become the biggest shortcoming of water conservancy standardization management, and safe operation is facing huge challenges. Geophysical technology provid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/08
Inventor 谭磊孙伯永江晓益李红文江树海史燕南俞炯奇陈星皮雷褚高强
Owner ZHEJIANG INST OF HYDRAULICS & ESTUARY
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