Arched combined faceplate for earth-rock dam and construction method thereof

Abstract

The invention discloses an arched combined faceplate for an earth-rock dam and a construction method thereof. The arched combined faceplate is formed by combining and splicing a plurality of arched concrete slabs through slots; the slots are spliced in a vertically and horizontally staggered manner according to the size of the arched combined faceplate; and gaps between the faceplates and the slots are filled by adopting asphalts. The arched concrete slabs are identical in shape and have the side length of 16-22m and the thickness of 0.3-0.5m. The arched concrete slabs are spherical crown-shaped, and the height of a crown top is one quarter of the side length, or the arched concrete slabs are parabolic, and the height of the top point is one quarter of the side length. The slots have the width of 1.5-2m, the heights of the slots are one quarter of the side length of the slots, and the gaps between the faceplates after combination is 1-2cm. The thickness of the asphalts in the slots is 0.3-0.5m. The construction method of the arched combined faceplate comprises the technological steps of laying cushion layers, splicing the slots, splicing the arched concrete slabs, asphalting in the slots and the like. The arched combined faceplate provided by the invention has the advantages that tensile stress and cracks are not easy to occur, the quality control is high, the construction is convenient, the construction period is short, the construction cost is low and the effect is good.

Description

technical field [0001] The invention belongs to the technical field of water conservancy engineering, and in particular relates to an arch composite panel of an earth-rock dam and a construction method thereof. Background technique [0002] With the introduction of the "Twelfth Five-Year Plan", the country has invested heavily in new energy, and hydropower will become the protagonist of the "Twelfth Five-Year Plan". Face rockfill dams are favored because they can make full use of local natural materials, can adapt to different geological conditions, and are relatively simple in construction methods. The hydropower projects represented by the construction of medium and high earth-rock dams in the western development have put forward higher requirements for the design of earth-rock dams. The height of earth-rock dams has developed from tens of meters to 100 meters, 200 meters, and even 300 meters. Such as Shuibuya 232-meter-high concrete face rockfill dam, Jiangping River 225...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defect that traditional face dams are prone to produce vertical and horizontal cracks under the action of earthquake and water pressure, that is, the defect of poor deformation capacity of the face plate, and propose an arch composite face plate of earth-rock dam, which can adapt to the action of earthquake and water pressure Deformation such as cracking, twisting, misalignment, voiding, etc.

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