Concrete dam and surface grouting stopping dyke structure thereof

A concrete dam and contact grouting technology, which is applied to dams, arch dams, gravity dams, etc., can solve the problems of multiple construction procedures, cleaning up the dam foundation, threatening the stability and safety of the dam, and achieve the effect of reducing the construction procedures of anchor rods

Active Publication Date: 2017-11-21
POWERCHINA ZHONGNAN ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the traditional grout stop embankment can meet the functional requirements of the dam foundation contact grouting, for the dam section with a steep foundation surface, the pressure of the dam body in the direction perpendicular to the dam foundation surface is very small. The f...

Method used

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  • Concrete dam and surface grouting stopping dyke structure thereof
  • Concrete dam and surface grouting stopping dyke structure thereof
  • Concrete dam and surface grouting stopping dyke structure thereof

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Embodiment Construction

[0031] The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. For the convenience of description, if the words "up", "down", "left" and "right" appear in the following, it only means that the directions of up, down, left and right are consistent with the drawings themselves, and do not limit the structure.

[0032] A concrete dam such as image 3 As shown, it includes a left section 11, a right section 12 arranged on the left and right mountain slopes, and a middle section 13 arranged at the river valley; the left section 11 and the right section 12 have a contact grouting stop embankment structure of a concrete dam. Such as figure 1 As shown, the contact grouting grout stop embankment structure of the concrete dam includes a grout stop embankment 1 and a f...

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Abstract

The invention discloses a concrete dam and a surface grouting stopping dyke structure thereof. The surface grouting stopping dyke structure comprises a grouting stopping dyke and a foundation surface which is obliquely arranged on a massif slope correspondingly, wherein a grouting stopping tank is formed along the slope direction of the foundation face, and a plurality of notch grooves are obliquely formed in the bottom of the grouting stopping tank; the lower end of the grouting stopping dyke is embedded into the grouting stopping tank and is connected to the notch grooves in an adhesive manner, the top of the grouting stopping dyke extends upward along the vertical direction and a concrete dam body which extends along the length direction of the dam body externally coats the grouting stopping dyke; and the bottom surface of the concrete dam body is fixedly connected to the foundation face together. The grouting stopping dyke disclosed by the invention not only can meet the functional demand of surface grouting of the dam foundation, but also has anti-seepage and water-stoppage functions of the dam foundation, so that the anti-skid stability of the grouting stopping dyke is enhanced, drilling and anchor bar use level are reduced, and the construction steps are reduced.

Description

technical field [0001] The invention relates to a concrete dam and its contact grouting stop grouting embankment structure, which belongs to the field of water conservancy and hydropower engineering construction. Background technique [0002] Due to the shrinkage of concrete materials, the foundation surface of concrete dams is easy to pull apart after shrinkage, especially when the foundation surface is steep. Therefore, it is necessary to carry out contact grouting on the foundation surface. Contact grouting methods include borehole buried pipe grouting, pre- Buried pipe grouting method and direct drilling grouting method. No matter which grouting method is used, the dam base surface needs to be divided into one or several small closed grouting areas smaller than a certain area with a grout stop embankment. [0003] The traditional contact grouting stop embankment structure is: pouring a concrete embankment with a trapezoidal cross-section on the foundation surface, and t...

Claims

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Application Information

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IPC IPC(8): E02B7/10E02B7/12
CPCE02B7/10E02B7/12
Inventor 陈平鄢建华王增武王庆祥
Owner POWERCHINA ZHONGNAN ENG
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