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A leak-stopping method for concrete dam gaps

A plugging method and technology of concrete dams, which are applied in water conservancy projects, sea area projects, buildings, etc., can solve the problems of water storage loss, difficulty in penetrating deep, and inability to achieve plugging effects, etc., and achieve good fluidity and strong applicability Effect

Inactive Publication Date: 2016-08-24
HUAIHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Concrete dams will produce leakage joints under the conditions of uneven settlement, temperature stress, construction defects, etc., resulting in a large loss of water storage
Most of the current plugging methods are pouring cement slurry, asphalt and other materials. Due to the limited fluidity of the plugging liquid, it is often difficult to penetrate into the tiny seepage joints inside the dam body.
Ultrafine particles can penetrate deep into the dam body under the action of water flow, but they cannot play a good plugging effect on the seepage joints that are thin upstream and thick downstream

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1, a kind of plugging method of concrete dam gap, such as figure 1 As shown, when the seepage joint 8 of the concrete dam 1 is linear, it runs through from one side of the concrete dam 1 to the other side. The plugging method at this time is that the method uses a plugging device, and the plugging device includes a plugging liquid storage tank 4, an aerator 3 and a plugging liquid collection tank 7, and the air diffuser of the aerator 3 The impeller is set in the plugging liquid storage tank 4, one side of the plugging liquid storage tank 4 is provided with a discharge pipe 2, and the other side is provided with a recovery pipe 6 communicating with the leakage plugging liquid collection tank 7, and the discharge pipe 2 is equipped with a liquid discharge valve, and the recovery pipe 6 is equipped with a recovery pump 5; during plugging operation: place the plugging liquid storage tank 4 on the top of the dam, and place the plugging liquid collection pool 7 at...

Embodiment 2

[0032] Embodiment 2, a kind of plugging method of concrete dam gap, such as figure 2 As shown, when the seepage joint 8 of the concrete dam 1 is linear, it penetrates from the top of the concrete dam 1 to the bottom of the dam. The plugging method at this time is that the method uses a plugging device, and the plugging device includes a plugging liquid storage tank 4, an aerator 3 and a plugging liquid collection tank 7, and the air diffuser of the aerator 3 The impeller is set in the plugging liquid storage tank 4, one side of the plugging liquid storage tank 4 is provided with a discharge pipe 2, and the other side is provided with a recovery pipe 6 communicating with the plugging liquid collection tank 7, and the discharge pipe 2 is equipped with a drain valve, and the recovery pipe 6 is equipped with a recovery pump 5; during plugging operation: place the aerator 3 and the plugging liquid storage tank 4 at the highest point of the leakage joint 8, and place the plugging l...

Embodiment 3

[0033] Embodiment 3, as the method described in Embodiment 1 and 2, the volume of the plugging liquid in the plugging liquid storage tank is 0.5 to 1 hour seepage joint flow rate; the volume of the plugging liquid collection tank 7 is 5 ~ 10 minutes leaking seam flow.

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Abstract

The invention relates to a concrete dam joint leaking stoppage method. According to the method, a leaking stoppage device is used, when leaking is stopped, a leaking stoppage liquid storage container is placed at the highest position of a dam crest or a leaking joint, a leaking stoppage liquid collection pool is placed at the lowest position of the leaking joint, a liquid outlet of a drain pipe is formed at the highest position of the leaking joint, leaking stoppage liquid is filled in the leaking stoppage liquid storage container and aerated by turning on an aerator, a drain valve is opened after 5-30 minutes, the leaking stoppage liquid flows in from the highest point of the leaking joint, the size of the valve is adjusted, so that the flow of the leaking stoppage liquid is slightly lower than that of the leaking joint, a recovery pump is turned on after the leaking stoppage liquid flows out from the leaking stoppage liquid collection pool, and the cycle continues until the joint is plugged. Microorganism leaking stoppage liquid is mineralized to stop leaking, is fine in flowability and easily penetrates into a dam, the flow path of the leaking stoppage liquid is a leaking passage, and fine leaking joints and leaking joints with thin upstream and thick downstream can be stopped from leaking.

Description

technical field [0001] The invention relates to a method for plugging a concrete dam, in particular to a method for using a plugging liquid to plug a gap in a concrete dam. Background technique [0002] Concrete dams will produce leakage joints under the conditions of uneven settlement, temperature stress, construction defects, etc., resulting in a large loss of water storage. Most of the current plugging methods are pouring cement slurry, asphalt and other materials. Due to the limited fluidity of the plugging fluid, it is often difficult to penetrate into the tiny seepage joints inside the dam body. Ultrafine particles can penetrate deep into the dam body under the action of water flow, but they cannot play a good plugging effect on the seepage joints that are thin upstream and thick downstream. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a leak-stopping method for concrete dam gaps with a simple leak-stop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B3/16
CPCE02B3/16E02D15/00
Inventor 李明东李琳田安国李驰张志峰朱丽萍
Owner HUAIHAI INST OF TECH
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