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A method for plugging abandoned reservoir culverts under seepage pressure

A technology of seepage pressure and culverts, which can be used in water conservancy projects, sea area projects, coastline protection, etc., and can solve problems such as difficult plugging

Active Publication Date: 2016-02-17
ANHUI SHUIAN CONSTR GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under certain conditions, the water level of the reservoir has a limited drop and cannot be lowered to the elevation of the culvert floor. The water inlet of the culvert is submerged in the reservoir water, and there is a certain head pressure. The culvert must be sealed under the condition of seepage water. It is more difficult, and it needs to be sealed under the condition that the reservoir cannot be emptied

Method used

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Examples

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Embodiment Construction

[0026] Below in conjunction with specific embodiment, further illustrate the present invention.

[0027] The catchment area of ​​a reservoir is 26.23km 2 , with a total storage capacity of 17.82 million m 3 , is a key reservoir for water supply, irrigation and breeding combined with flood control. The crest length of the dam is 450m, the crest width is about 4m, the crest elevation is 67.30m, and the maximum dam height is 29.8m. The dam has three water discharge culverts in the east, middle and west, and the east culvert has serious water leakage and needs to be blocked and abandoned. Since the reservoir has the functions of water supply and breeding, the water level can only be lowered during the construction period and cannot be completely emptied, and the abandoned culverts can only be blocked under the condition that they cannot be emptied.

[0028] A method for plugging reservoir culverts abandoned under the action of seepage pressure, characterized in that it comprise...

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Abstract

The invention relates to a plugging method of an abandoned reservoir culvert under the action of seepage pressure. The method can effectively plug the abandoned reservoir culvert through the following steps of plugging a water leakage channel at the culvert wall; adopting the back pressure grouting to plug an upstream section of the plugging section; pouring concrete at the plugging section; backfilling and grouting the plugging section of the culvert; finally plugging and grouting the channel.

Description

technical field [0001] The patent of the present invention relates to a method for plugging abandoned reservoir culverts under the action of seepage pressure. Background technique [0002] After the founding of the People's Republic of my country, a large number of reservoirs were built. Due to the long history and limited by the technical conditions at that time, many reservoirs were in various dangers and needed reinforcement. The original culvert will be abandoned. [0003] Abandoned culverts need to be blocked. In most cases, the water level of the reservoir is lowered to the floor elevation of the culvert, and a water-retaining cofferdam is filled on the inlet side of the culvert. It is easier to block the culvert under dry conditions. Finish. However, under certain conditions, the water level of the reservoir has a limited drop and cannot be lowered to the elevation of the culvert floor. The water inlet of the culvert is submerged in the reservoir water, and there is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B8/06
Inventor 杨毅
Owner ANHUI SHUIAN CONSTR GRP CO LTD