Double-deck concrete faced rock-fill dam and construction method thereof

Abstract

The invention discloses a double-deck concrete faced rock-fill dam. The double-deck concrete faced rock-fill dam comprises a rock-fill accumulation body, a concrete face, geo-membrane and a super-polymer compound concrete face, the upper side of the rock-fill accumulation body is laterally covered with the super-polymer compound concrete face, the super-polymer compound concrete face is covered with the geo-membrane, and the geo-membrane is covered with the concrete face. The invention also discloses the double-deck concrete faced rock-fill dam construction method. According to the double-deck concrete faced rock-fill dam and the construction method thereof, the filling requirement to the accumulation body of a dam body is relatively lower, and it is avoided that a normal concrete faced rock-fill dam requires a higher degree of filling density and a loaded filter with impermeability in the process of filling; concrete hydration heat is effectively reduced, and construction links are few; the impermeability ability of the dam body is enhanced, and the loaded filter and a transition layer are not needed to be constructed on the back of concrete faces; the geo-membrane is arranged between double-deck concrete faces, and self compact concrete can be effectively protected from flowing into the accumulation body; the double-deck concrete faced rock-fill dam construction method has the advantages of being fast in construction speed, simple in process, suitable to popularize and apply and good in practicability.

Description

technical field [0001] The invention belongs to the technical field of water conservancy engineering, and in particular relates to a double-face rockfill dam and a construction method thereof. Background technique [0002] The face rockfill dam first appeared in the mining area of ​​the Sierra Nevada Mountains in California, USA in the 1850s. At that time, the rockfill dam used wooden panels to prevent seepage. After more than 150 years of development, modern concrete face rockfill dams are basically concrete face rockfill dams. Because of their low cost and short construction period, concrete face rockfill dams have been vigorously developed, and 200m high dams have been successfully built. The face rockfill dam is mainly composed of three parts: the anti-seepage face plate, the anti-seepage grounding structure and the rockfill dam body; the anti-seepage face plate is the main anti-seepage component of the rockfill dam, and the face plate is connected to the anti-seepage gr...

AI Technical Summary

Problems solved by technology

[0003] There are several methods of building earth-rock dams in the prior art: 1) The construction method of using self-compacting concrete materials to build concrete dams, this method is mainly used in building dam structures with larger concrete anti-seepage bodies, such as concrete core walls Rockfill dam, concrete gravity dam, etc.; 2) The construction method of the face plate made of composite face material and its anti-seepage body. This earth-rock dam uses a composite material instead of concrete to make the face plate. Design anti-seepage body to assist anti-seepage, the construction period is long and the anti-seepage ability is difficult to guarantee; 3) The anti-seepage panel composed of glass fiber mortar layer and FRP layer and its construction method, the anti-seepage panel is also a composite material panel in essence , the construction conditions are relatively high and the construction is complicated

At the same time, the dam is built according to the existing embankment, or the dam is built on the basis of the existing seismic accumulation body. In these special places, the main building materials of the dam are not filled according to the design requirements of the dam. Indicators cannot be fully grasped

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