Construction technology for converging compacted concrete dam and riverbed foundation surface

Abstract

The invention discloses a construction technology for converging a compacted concrete dam and a riverbed foundation surface. The technology includes (1) utilizing metamorphosis concrete to level the foundation surface; (2) before initial setting of the metamorphosis concrete, pouring roller compacted concrete on the upper portion of the poured metamorphosis concrete surface; (3) continuously utilizing the metamorphosis concrete to level the next segment of a riverbed foundation surface until the entire riverbed foundation surface is covered; (4) performing secondary roller compacted concrete construction continuously on the compacted construction surface, and completing pouring the riverbed concrete dam. The technology has the advantages that the metamorphosis concrete is adopted as a converging layer of the roller compacted concrete and the riverbed foundation rock surface, so that the dam roller compacted concrete and the riverbed foundation rock surface are converged effectively, continuous actual lifting of the roller compacted concrete dam from the foundation surface is implemented, converging safety of the dam and the riverbed foundation surface is improved, and construction period is shortened.

Description

technical field [0001] The invention relates to a construction technique for connecting a roller-compacted concrete dam to a river bed foundation surface, and belongs to the technical field of hydropower and water conservancy engineering. Background technique [0002] Two methods are generally adopted for the foundation cushion of roller compacted concrete dams in hydropower and water conservancy projects: the first method is to use normal concrete as the cushion, the disadvantage is that considering the temperature control problem, it needs to be divided into joints and blocks, and the construction is more troublesome and the construction period is long; the second method It is adopted to spread the mortar first, and then directly carry out RCC construction. The disadvantage is that the flatness of the foundation surface is required to be high, and the scope of application is small. Contents of the invention [0003] The purpose of the present invention is to provide a co...

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Problems solved by technology

[0002] Two methods are generally adopted for the foundation cushion of roller compacted concrete dams in hydropower and water conservancy projects: the first method is to use normal concrete as the cushion, the disadvantage is that considering the temperature control problem, it needs to be divided into joints and blocks, and the construction is more troublesome and the construction period is long; the second method It is adopted to spread the mortar first, and then directly carry out the roller compacted concrete construction. The disadvantage is that the flatness of the foundation surface is required to be high, and the scope of application is small.