Concrete Face Dam Peripheral Joint Waterproof Structure and Its Construction Method
A technology for concrete face dam and concrete face, which is applied in water conservancy projects, marine engineering, construction, etc., can solve the problems of face plate damage, difficult construction of the middle water stop, poor quality, etc., achieve outstanding water stop sealing effect, improve seepage resistance The effect of reliability, construction and maintenance convenience
Active Publication Date: 2017-01-04
CHANGJIANG SURVEY PLANNING DESIGN & RES
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Problems solved by technology
According to the technical development experience of concrete face rockfill dams at home and abroad, due to the difficulty in construction of the central waterstop, the construction quality is not easy to guarantee, and the quality of the concrete in the lower part of the waterstop is poor due to insufficient local vibration. Most of them tend to be canceled except for super high dams Waterstop in the middle puts forward higher requirements on the anti-seepage reliability of top and bottom waterstops
When the face dam leaks and repairs to the surrounding seams are required, if the face is removed and the bottom and middle water stops are inspected and repaired one by one, the amount of work will be huge and new damage will be caused to the face
Method used
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[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, but the embodiments should not be understood as limiting the present invention, and are merely examples. At the same time, the advantages of the present invention will become clearer and easier to understand by explaining the advantages of the present invention.
[0025] As shown in the figure, the peripheral seam water stop structure of the concrete slab dam includes a combined rubber rod 3 set at the joint of the peripheral seam surface 1; the combined rubber rod 3 is covered with a metal waterstop 4; metal waterstop 4 Convex and concave fit with the combined rubber rod 3; both sides of the metal waterstop 4 are bonded to the concrete surface 2 of the slot.
[0026] The metal waterstop 4 is covered with an anti-seepage protection cover sheet 6; between the metal waterstop 4 and the anti-seepage protection cover sheet 6 is filled with plastic filler 5;...
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The invention discloses a peripheral seam water-stop structure of a concrete face dam and a construction method thereof, comprising the steps of setting a combined rubber rod at the seam opening of the peripheral seam groove; the combined rubber rod is covered with a metal water-stop; the metal water-stop Cooperate with the concave and convex of the combined rubber rod; the two sides of the metal waterstop are bonded with the concrete surface of the slot through the two-component epoxy resin glue at the joint. The top of the metal waterstop is covered with an anti-seepage protection cover; plastic filler is filled between the metal waterstop and the anti-seepage protection cover; the anti-seepage protection cover is fixed by expansion bolts and stainless steel beading. The anti-seepage protection cover and the two sides of the stainless steel bead are sealed by elastic edge sealing, and the width of the elastic edge sealing is not less than 5CM. The anti-seepage protection cover is EPDM cover. The metal waterstop is a stainless steel waterstop or a copper waterstop. The invention proposes adding an arc-shaped sealing metal waterstop to strengthen the top waterstop effect, and can be widely used in new 100m-level concrete face dam projects and reinforcement and repair projects.
Description
Technical field [0001] The invention relates to the technical field of concrete face rockfill dams, and relates to a water-stop structure for the peripheral joints of a concrete face rockfill dam and a construction method thereof. Background technique [0002] For a high concrete face rockfill dam, under the action of its own weight and upstream water pressure, the rockfill body will deform greatly, and the peripheral joints will also undergo three-way deformation of opening, shearing and settlement, and the deformation value may reach tens of centimeters. For high concrete face rockfill dams, there are usually three waterstops at the peripheral joints: bottom waterstop, middle waterstop and top waterstop. According to the technical development experience of concrete face rockfill dams at home and abroad, the construction quality of the central waterstop is difficult to guarantee, and the quality of the lower concrete of the waterstop is poor due to the inadequate local vibration...
Claims
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IPC IPC(8): E02B3/16
Inventor 谭界雄高大水田金章王秘学周和清卢建华龚道勇杨芳
Owner CHANGJIANG SURVEY PLANNING DESIGN & RES