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Rockfill concrete dam

A technology of rockfill concrete and dam body, which is applied in the direction of dams, barrages, and weirs, and can solve problems such as affecting the construction speed.

Inactive Publication Date: 2012-01-18
CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For rock-fill concrete dams, fast construction speed is its significant advantage, while traditional anti-seepage structures will seriously affect its construction speed

Method used

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  • Rockfill concrete dam
  • Rockfill concrete dam
  • Rockfill concrete dam

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Embodiment Construction

[0009] specific implementation plan

[0010] Before spraying the anti-seepage layer of polyurea elastomer, the concrete surface should be treated with tools such as angle grinder and high-pressure water gun. Use a high-pressure water gun to flush the hair, and the pressure should be controlled between 5MPa and 40MPa.

[0011] figure 1 It is a schematic diagram of the position of the anti-seepage layer according to an embodiment of the present invention, showing the surfaces of the dam body that are in contact with the water flow and may be in contact. This rockfill concrete dam is provided with an anti-seepage layer 3 on the upstream and downstream surfaces of the dam body, and the anti-seepage layer is a polyurea elastomer anti-seepage layer that adopts a spin-sprayed film construction method. The spraying range of the anti-seepage layer runs from the left bank to the right bank, and the spraying height can be from the check flood level 2 down to h to the dam bottom elevati...

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Abstract

The invention discloses a rockfill concrete dam. Impermeable layers are arranged on surfaces of upstream and downstream of a dam body, and the impermeable layers are polyurea elastomer impermeable layers obtained by adopting a jet grouting method or other construction methods. The polyurea elastomer impermeable layers can be arranged on all the water retaining surfaces and overflowing surfaces of the dam body as necessary. Polyurea is a waterproof, anticorrosive, shock-resistant, wear-resistant, wet-skid-resistant and heat-resistant material and has the advantages of zero VOC (volatile organic compound), environmental friendliness, rapid curing, excellent physical, chemical and mechanical properties, high construction efficiency and the like, thus impermeable performance of the rockfill concrete dam can be obviously improved by adopting the polyurea elastomer impermeable layers.

Description

technical field [0001] The invention relates to the technical field of hydraulic engineering, in particular to a rock-fill concrete dam. Background technique [0002] Rockfill concrete is a new type of concrete proposed by Tsinghua University, and it is a new type of mass concrete construction method developed on the basis of self-compacting concrete technology. It first puts the rockfill with large particle size (the maximum particle size can reach more than 1m) directly into the warehouse to form a rockfill body with gaps, and then pours specially developed low-heat of hydration low-cost self-compacting concrete from the upper part of the rockfill body. Utilizing the high flow and anti-segregation properties of the self-compacting concrete, the self-compacting concrete is filled into the voids of the rockfill by its own weight to form a complete, compact, high-strength, low-heat of hydration, and low-shrinkage large-volume concrete. Rockfill concrete technology has the ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B7/06
Inventor 张国新金峰李炳奇王光伦张磊刘毅
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES