Reservoir dam parallel electrical method and transient electromagnetic technology combined diagnosis system and method
A transient electromagnetic and diagnostic system technology, applied in radio wave measurement systems, electromagnetic/magnetic exploration, and sound wave re-radiation, etc., can solve the problems of suboptimal combination and single means.
Pending Publication Date: 2021-03-23
ZHEJIANG INST OF HYDRAULICS & ESTUARY +1
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Problems solved by technology
[0004] The purpose of the present invention is to solve the problems of geophysical prospecting methods in reservoir dam leakage detection, such as single means or suboptimal combination, and provide a combined diagnosis system and method of reservoir dam parallel electrical method and transient electromagnetic technology
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[0066] 1. If figure 1 As shown, according to the transverse width from the crest of the dam to the foot of the dam, the grouping of the detection survey lines is named as the crest survey line, the first-level backwater slope survey line, the second-stage backwater slope survey line, the third-stage backwater slope survey line...; When the dam has the problem of leakage around the dam, a horizontal measuring line perpendicular to the dam should be added at the abutment. The starting point of the horizontal measuring line is at the dam crest and ends at the dam foot.
[0067] 2. If figure 2 As shown, according to the length of the dam, when detecting the leakage of the dam body 1, arrange parallel electrical measuring lines on the central axis of the dam crest 3 or on the anti-seepage section, and arrange copper rods at the position of the cable 5 tap 4, and take the copper rod 4 as the center around each copper rod, 10cm is a radius to dig a funnel-shaped pit, and fill with ...
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The invention discloses a reservoir dam parallel electrical method and transient electromagnetic technology combined diagnosis system and method, wherein the system comprises a longitudinal detectionsystem which comprises a parallel electrical method detection device and a transient electromagnetic detection device. The parallel electrical method detection device comprises a parallel electrical method measuring line and a parallel electrical method instrument which are arranged on the central axis or the anti-seepage end face of a dam crest of a dam, wherein the parallel electrical method measuring line comprises copper bars which are adjacently inserted into the dam at intervals and cables connected with the copper bars; the transient electromagnetic detection device comprises transientelectromagnetic measuring lines and a transient electromagnetic instrument, wherein the transient electromagnetic measuring line and the transient electromagnetic instrument are arranged on a dam crest central axis or an anti-seepage section of two dam shoulders and / or a dam crest hardening area of the dam, and the transient electromagnetic measuring line comprises coils arranged on measuring points and a coil cable connected with the coils. The cable and the coil cable are respectively connected with the parallel electrical instrument and the transient electromagnetic instrument; the parallelelectrical instrument and the transient electromagnetic instrument are used for being connected with an analysis system.
Description
technical field [0001] The invention relates to the technical field of water conservancy project safety diagnosis, specifically a combined diagnosis system and method for reservoir dams using parallel electrical method and transient electromagnetic technology. In view of unfavorable conditions such as dam leakage and site hardening, a system and method for diagnosing hidden dangers of reservoir dam leakage by combining the parallel electrical method and transient electromagnetic technology are proposed. Background technique [0002] The investigation and prevention of reservoir dam leakage is a difficult point in the standardized management of water conservancy projects. It is of great significance to make up for the shortcomings of hidden dangers in the project to ensure the safety of infrastructure and the sustainable development of water benefits. An earth-rock dam is a granular structure of earth and rock formed by manual or mechanical layered rolling and accumulation. S...
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Login to View More IPC IPC(8): G01V3/08G01V3/00
CPCG01V3/00G01V3/083
Inventor 谭磊江晓益李红文俞炯奇陈星许小杰江树海
Owner ZHEJIANG INST OF HYDRAULICS & ESTUARY