Concrete-enrockment mixed dam and construction method thereof

A technology of concrete and mixed dams, which is applied in the direction of dams, barrages, gravity dams, etc., can solve the problems of strong dependence on terrain and geological conditions, poor earthquake resistance, etc., and achieve the goals of reducing dam volume, good integrity, and reducing costs Effect

Active Publication Date: 2010-06-02
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large volume of the dam, strict temperature control measures are required when pouring concrete; in addition, c

Method used

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  • Concrete-enrockment mixed dam and construction method thereof
  • Concrete-enrockment mixed dam and construction method thereof
  • Concrete-enrockment mixed dam and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment one graded filling concrete-rockfill hybrid dam

[0028] Such as figure 1 , 2 As shown in , 3, a new type of concrete-rockfill hybrid dam is composed of concrete dam body 1, rockfill body dam body 2, comb-shaped tooth connecting section 3, upstream rockfill ballast 4, downstream rockfill ballast 5, pad The layer 6 and the transition layer 8 are composed, and the corridor 7 is set at the bottom of the concrete dam body 1 at the same time. The upstream dam body of the mixed dam adopts the concrete dam body 1, and the downstream dam body adopts the rockfill body 2. The comb-shaped tooth connecting section 3 is a group of triangular concrete slab walls arranged in a comb-like shape, which is integrally poured with the concrete dam body 1, extends from the concrete dam body 1 to the rockfill dam body 2 and penetrates into the rockfill dam body 2 middle.

[0029] When the dam height is high, the construction needs to be carried out according to the graded filli...

Embodiment 2

[0030] Embodiment 2 integrally filled concrete-rockfill hybrid dam

[0031] The structure of the mixing dam is the same as in Embodiment 1.

[0032] When the dam height is not very high, the overall filling method can be adopted. When the overall filling is completed, the concrete dam body 1 and the comb-shaped tooth connecting section 3 are constructed first, and the two are continuously poured to the dam crest, and the two are integrally poured; after the construction of the concrete dam body 1 and the comb-shaped tooth connecting section 3 is completed, start The cushion layer 6 and the transition layer 8 are constructed, and the rockfill dam body 2 is filled at the same time. The two are carried out simultaneously, and the rockfill material must be fully rolled and compacted; Actual conditions during construction, the upstream rockfill ballast 4 and the downstream rockfill ballast 5 can also be carried out simultaneously when the dam body is filled.

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Abstract

The invention discloses a concrete-enrockment mixed dam and a construction method thereof. The mixed dam has a novel dam body structure formed by combining a concrete dam body and a rockfill dam body. The dam body thereof comprises the concrete dam body, the rockfill dam body, pectinate connection section, a subcrust and a transition layer, wherein the pectinate connection section is arranged in the rockfill dam body, is subjected to one-piece pouring with the concrete dam body and is embedded into the rockfill dam body; and the subcrust and the transition layer are arranged between the concrete dam body and the rockfill dam body. The concrete-rockfill mixed dam absorbs the advantages of rock-fill dams and concrete dams, overcomes the disadvantages of the two dam types, and has the advantages of simple structure and convenient construction and manufacturing cost reduction, which is an economical and practical dam type.

Description

technical field [0001] The invention belongs to the technical field of water conservancy engineering, in particular to a concrete-rockfill hybrid dam and a construction method thereof. Background technique [0002] At present, the dam types of retaining dams commonly used in water conservancy projects include rock-fill dams (including core wall rock-fill dams and face-face rock-fill dams), and concrete dams (concrete gravity dams and arch dams). Since retaining dams are generally built in remote and inaccessible areas, the advantages of core wall rockfill dams and face rockfill dams are that they can make full use of local natural materials and avoid transporting a large amount of building materials; the construction is relatively simple; the seismic performance is good; the terrain and Strong adaptability to geological conditions, etc. However, core rockfill dams are prone to arching effects, resulting in core wall cracks and hydraulic splitting, resulting in seepage damag...

Claims

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Application Information

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IPC IPC(8): E02B7/04E02B7/06E02B7/10
Inventor 刘汉龙肖杨丁选明沈扬杨贵
Owner HOHAI UNIV
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