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Construction method of dam in water conservancy and hydropower engineering

A construction method, water conservancy and hydropower technology, applied in the direction of dams, barrages, barrages, etc., can solve problems such as the reduction of dam structure strength, achieve the effects of improving anti-seepage ability, reducing transportation energy consumption, and weakening erosion

Inactive Publication Date: 2020-05-29
四川能投建工集团水利水电工程有限公司
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Problems solved by technology

[0011] The anti-seepage capacity is one of the important indicators to measure the durability of the main body of the rockfill dam. When the anti-seepage capacity of the dam body decreases, it means that the dam is more likely to be infiltrated by the upstream water body, which will easily reduce the internal structural strength of the dam

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  • Construction method of dam in water conservancy and hydropower engineering
  • Construction method of dam in water conservancy and hydropower engineering
  • Construction method of dam in water conservancy and hydropower engineering

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Embodiment Construction

[0055] The invention discloses a construction method of a dam in a water conservancy and hydropower project. The rockfill dam includes an upstream bedrock area, a face plate, a cushion layer, a transition layer and a rockfill area; the construction method of the dam includes the following steps:

[0056] A. Clean up the dam abutment and foundation pit. According to the requirements of diversion and crossing the flood, excavate the dam abutments on both banks before closure, and excavate the riverbed foundation pit after closure; remove the covering layer of the dam abutment and the soft soil layer of the foundation pit, Remove stagnant water and sundries; move the earthwork obtained from cleaning, blasting and excavation to the slag yard to screen out stone materials.

[0057] In step A, the cleaning and excavation construction process of the dam abutment and foundation pit is a basic project, which needs to be carried out in accordance with relevant steps, construction conditi...

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Abstract

The invention discloses a construction method of a dam in water conservancy and hydropower engineering. The rockfill dam comprises an upstream paving area, a panel layer, a cushion layer, a transitionlayer and a rockfill area. The construction method of the panel rockfill dam comprises the steps that a dam shoulder and a foundation pit are cleaned, concrete is poured to form the upstream paving area and a base, the rockfill area is poured on the base, and the rockfill area is formed by repeated casting and rolling of the multi-layer rolling concrete; and the panel layer, the cushion layer, and the transition layer are sequentially filled from upstream to downstream on the rockfill area. According to the construction method, the required stone materials can be directly excavated and screened from a dam foundation or a dam shoulder, materials can be obtained according to local conditions, the cost is saved, the transportation energy consumption is reduced, and the method is more environment-friendly and energy-saving.

Description

technical field [0001] The invention relates to the technical field of engineering construction, in particular to a construction method for a dam in a water conservancy and hydropower project. Background technique [0002] In water conservancy and hydropower projects, the main body of the dam is one of the important construction projects. Dams can be divided into two categories: concrete dams and earth-rock dams; concrete dams generally refer to dams made of concrete pouring (or rolling) or assembled with prefabricated concrete blocks, and earth-rock dams generally refer to dams made of local soil, stone or mixed materials. , A retaining dam built by throwing filling, rolling and other methods, when the dam material is mainly soil and gravel, it is called an earth dam, and when it is mainly gravel, pebbles, and blasting stones, it is called a rockfill dam. In the prior art, the main body of the hydropower dam is usually constructed using a dam construction method. [0003]...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B7/06C04B28/02
CPCC04B28/02C04B2111/74E02B7/06C04B18/08C04B14/06C04B14/02C04B2103/304C04B2103/302C04B24/383C04B22/16C04B22/128C04B24/008C04B24/045
Inventor 孙晓波
Owner 四川能投建工集团水利水电工程有限公司
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