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Method and structure for constructing gravity dam on deep overburden layer

A technology of deep overburden and gravity dam, applied in gravity dam, infrastructure engineering, dam and other directions, can solve the problems of uneven deformation, easy to be damaged, insufficient bearing capacity, etc., to achieve easy to be damaged and strong permeability , fast effect

Pending Publication Date: 2020-07-31
CHINA WATER RESOURCES PEARL RIVER PLANNING SURVERYING & DESIGNING
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Problems solved by technology

[0010] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a method and structure for building a gravity dam on a deep sandy pebble gravel layer, so as to solve the problems of uneven deformation and load bearing of the gravity dam foundation on the deep sandy pebble gravel layer. Insufficient strength, strong permeability, easy to wash and damage engineering difficulties

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  • Method and structure for constructing gravity dam on deep overburden layer
  • Method and structure for constructing gravity dam on deep overburden layer
  • Method and structure for constructing gravity dam on deep overburden layer

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032]In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "installed", "set with", "sleeved / connected", "connected", etc. should be understood in a broad sense, such as " Connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an inter...

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Abstract

The invention discloses a method and structure for constructing a gravity dam on a deep overburden layer. The method comprises the steps of dam foundation reinforcement, dam foundation seepage prevention, and energy dissipation and erosion prevention, wherein the dam foundation reinforcement realizes reinforcement treatment of a deep sand and gravel dam foundation by adopting vibroflotation reinforcement technology; the dam foundation seepage prevention adopts dam foundation seepage prevention technology based on flexible connection of a seepage prevention wall and a dam body; and through a vertical erosion prevention wall arranged at the lower part of a bottom plate of a stilling basin end sill, the energy dissipation and erosion prevention solve the problem that a deep sand and gravel layer of a downstream riverbed is constantly scoured. Compared with the prior art, the method and structure for constructing the gravity dam on the deep overburden layer effectively solve the key problem that a gravity dam foundation on the deep sand and gravel layer is insufficient in bearing capacity, overlarge in deformation, high in permeability, prone to be scoured and damaged and the like; andthe method and structure have the advantages of reducing measures of land expropriation and water and soil conservation in abandoned dreg sites, saving engineering investment, and protecting the ecological environment.

Description

technical field [0001] The invention relates to a method for building a gravity dam on a deep covering layer and its structure, belonging to the technical field of water conservancy and hydropower engineering. Background technique [0002] Gravity dams are widely used in water conservancy and hydropower projects at home and abroad. They are usually built on fresh and complete weakly weathered to slightly weathered rock foundations. The higher the dam body, the higher the requirements for the foundation. Most dam foundation riverbeds have alluvial layers of Quaternary sand, pebbles and gravel. For cases where the thickness of the covering layer is not large, the covering layer is generally excavated to remove the weathered and broken bedrock on the surface, and then the gravity dam is built on fresh and complete bedrock. . However, in actual engineering, it is often encountered that the riverbed of the dam foundation is distributed with a deep covering layer. If the covering...

Claims

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Application Information

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IPC IPC(8): E02B7/10E02B8/00E02B8/06E02D27/40
CPCE02B7/10E02B8/00E02B8/06E02D27/40
Inventor 刘元勋杨双超王海建毕树根徐苏晨陈松滨
Owner CHINA WATER RESOURCES PEARL RIVER PLANNING SURVERYING & DESIGNING
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