Anchored face rockfill dam and its construction method

Abstract

The invention relates to a rock-fill dam of an anchoring panel and a construction method thereof. The construction method comprises the following steps: respectively arranging a plurality of groups of prestressed anchor ropes simultaneously at one side of the upstream or the two sides of the upstream and downstream of a dam body, fixing one end of each prestressed anchor rope in a rock-fill body of the dam body, and fixing the other end of each prestressed anchor rope on the outer surface of a concrete panel of the upstream; or fixing the other end of each prestressed anchor rope on the outersurface of a protecting slope of the downstream, wherein each prestressed anchor rope structurally comprises a sleeve, one end of the sleeve is fixedly connected with an end part expanding body, and the part, penetrating through the concrete panel, of the other end of the sleeve is provided with a steel sleeve, the exposed end of the steel sleeve is provided with a concrete pedestal, the end surface of the concrete pedestal is connected with a jack and an anchor, the anchor is internally and fixedly connected with one end of each steel stranded wire, and the other end of each steel stranded wire is fixedly connected with a guide cap. According to the rock-fill dam of the anchoring panel and the construction method thereof, the relative sliding of the concrete panel and the rock-fill body is limited, the stability of the edge slope of the dam body is improved and the volume of the dam body is reduced.

Description

technical field [0001] The invention belongs to the technical field of water conservancy engineering, and relates to an anchored face rockfill dam, and also relates to a construction method of the anchored face rockfill dam. Background technique [0002] The concrete face rockfill dam is an earth-rockfill dam type with rockfill as the main material and supporting structure, and the concrete face as the anti-seepage body. Due to its small section, convenient construction, strong applicability, and low cost, this type of dam has been widely valued by the dam industry at home and abroad, and has been widely promoted and applied. Most of the dams are in good condition. Although face rockfill dams have good application prospects, the current design of face rockfill dams is basically empirical, and the working characteristics have yet to be further demonstrated in theory, and there are still some problems to be solved in the actual operation process. This mainly includes the for...

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Problems solved by technology

[0006] The purpose of the present invention is to provide an anchored face rockfill dam, which solves the problem of relative displacement of the existing dam body due to the uncoordinated deformation between the rockfill body and the concrete face plate, resulting in changes in the stressed state and working conditions of the face plate, The overall anti-seismic stability is not enough, and the design of the dam slope is relatively slow. As a result, under the premise of a certain dam height, the bottom width of the dam body is relatively large, which not only increases the filling volume of the dam body, but also reduces The length of the building is increased, and the layout of the hub is not compact enough

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