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Concrete face rockfill dam pre-settling construction method

A technology of concrete slab and construction method, which is applied to dams, barrages, weirs, etc., can solve the problems of casualties of construction equipment, erosion of rockfill dams, limited flood discharge capacity of diversion tunnels, etc., and is conducive to settlement and deformation control. , Accelerate the settlement and deformation, which is beneficial to the safety and stability of the dam body

Inactive Publication Date: 2012-02-01
CHINA GEZHOUBA GROUP NO 5 ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the steep rise and fall of rivers in mountainous areas, mountain torrents come and go quickly, and it is hard to prevent them. Whenever there is such a steep rise and fall of mountain torrents, due to the limited flood discharge capacity of the diversion tunnel, it is easy to pile up rocks. The dam body is washed away, and the heavy construction equipment and even personnel may cause casualties

Method used

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  • Concrete face rockfill dam pre-settling construction method
  • Concrete face rockfill dam pre-settling construction method
  • Concrete face rockfill dam pre-settling construction method

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Embodiment

[0017] a. After the empty steel bar gabion 3 is neatly arranged and welded into one, fill stones in the gabion 3;

[0018] b. Reinforced gabion 3 is stacked along the downstream side slope of the rockfill dam body, and connected with each other by steel bars; after the empty steel gabions are placed neatly and welded into one, the stone cages with a diameter of no more than 70cm are placed with a loader. Blocks are filled in the gabion, and the steel gabion 3 is closed with binding wire;

[0019] c. Use threaded steel bars as the connecting anchor rod 5, and anchor the steel bar gabion 3 with the mountains on both sides. After the water flows through the dam, the water pre-settling is completed.

[0020] The height of the reinforced gabion 3 along the rockfill dam body shall not exceed the filling elevation of the upstream dam surface.

[0021] Reinforced gabion 3 length × width is not less than 300 × 200cm.

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Abstract

A concrete face rockfill dam water pre-settling construction method. After the empty steel gabions are neatly arranged and welded into one body, stones are filled in the gabions; the steel gabions are stacked along the downstream side slope of the rockfill dam body. , are connected to each other with steel bars; threaded steel bars are used as anchor rods, and the steel gabion is anchored with the mountains on both sides. After the water flows through the dam, the pre-settling of the water is completed. The concrete face rockfill dam water-passing pre-settling construction method provided by the present invention can withstand the test of repeated mountain torrent erosion after adopting reinforced gabion protection construction for the downstream side slope of the rockfill dam body; The settlement of the rockfill dam surface due to water passing through passively improves the compactness of the rockfill dam body and accelerates the settlement and deformation of the rockfill dam body. Water passing is equivalent to releasing the settlement of the rockfill dam body in advance, which is beneficial to Settlement deformation control of rockfill dam body and safety and stability of dam body.

Description

technical field [0001] The invention belongs to the construction field of concrete face rockfill dams. technical background [0002] In the construction of concrete face rockfill dams, due to the construction period and other reasons, it is often necessary to organize the filling of rockfill dams during the rainy season. Due to the steep rise and fall of rivers in mountainous areas, mountain torrents come and go quickly, and it is hard to prevent them. Whenever there is such a steep rise and fall of mountain torrents, due to the limited flood discharge capacity of the diversion tunnel, it is easy to pile up rocks. The dam body is washed away, and serious construction equipment and even personnel may cause casualties. Contents of the invention [0003] The object of the present invention is to provide a construction method for water pre-settling of small and medium-sized concrete face rockfill dams. [0004] The purpose of the present invention is achieved like this: a ki...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B7/06
Inventor 付俊雄冷向阳王章忠孙向楠朱海燕刘嫦杨海峰
Owner CHINA GEZHOUBA GROUP NO 5 ENG
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