Construction method of 150m-300m high concrete face rockfill dam with additional cemented sand and gravel structure layer
A technology of concrete slab and cementitious gravel, applied in dams, barrages, weirs, etc., can solve the problems of high slump, structural cracks, large cement consumption, etc., and achieve the effect of improving coordination
Active Publication Date: 2018-06-22
SINOHYDRO BUREAU 11 CO LTD
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Problems solved by technology
However, the disadvantage of this invention is that the rockfill concrete on the upstream side of the dam is poured with self-compacting mortar without vibration, the amount of cement per unit is large, the water-cement ratio is large, the slump is high, and the shrinkage is large, and structural cracks are likely to occur. , causing the dam to leak and the dam gradually loses its water-retaining function
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[0052] Now in conjunction with the accompanying drawings, the specific implementation of the present invention will be described in detail.
[0053] like figure 1 and figure 2 As shown, the construction method of the 150m to 300m high concrete face rockfill dam with a cemented sand and gravel structure layer added in the present invention includes a concrete face plate 1, a cemented sand and gravel structure layer 2, a cushion layer area 3, and a transition area 4 , main rockfill area 5 and secondary rockfill area 6, said method comprises the steps:
[0054] Step 1 paving and rolling the stone material in the main rockfill area 5, the thickness of the rolling layer is 80cm;
[0055] Step 2 Construction transition zone, cushion zone, concrete extruded side wall and cemented sand and gravel structure layer:
[0056] 2.1 Spread rolling transition material, cushion material, concrete extrusion side wall construction and laying roller compacted gelled sand and gravel materials ...
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Abstract
The invention belongs to the technical field of hydraulic structures of hydropower and water conservancy projects, and in particular relates to a construction method of a 150m-300m high concrete face rockfill dam with a cemented sand and gravel structure layer added. The invention proposes a construction method for a 150m-300m high concrete face rockfill dam with an added cemented sand and gravel structure layer, which includes setting a cemented sand and gravel structure layer between the concrete face and the cushion layer. The invention adds a cemented sand and gravel structure layer between the concrete face plate and the cushion material, which plays the role of secondary anti-seepage and support for the concrete face plate of the dam, and improves the coordination between the deformation of the concrete face plate and the cemented sand and gravel dam , in order to solve the technical problem of the collapse and damage of the concrete panel caused by the seepage deformation of the dam.
Description
technical field [0001] The invention belongs to the technical field of hydraulic structures of hydropower and water conservancy projects, and in particular relates to a construction method of a 150m-300m high concrete face rockfill dam with a cemented sand and gravel structure layer added. Background technique [0002] In order to protect the ecological environment, reduce the pollution of primary energy to the atmospheric environment, make full use of renewable and clean energy, and vigorously develop the hydropower industry, hydropower dams are the main hydraulic structures that must be built. The concrete face rockfill dam is a dam that makes full use of local materials, which is economical and fast, and is especially suitable for remote mountainous areas, especially in western China. [0003] Since China began to build concrete face rockfill dams with modern technology in 1985, it has gone through 30 years of development. Among the more than 220 various types of face da...
Claims
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IPC IPC(8): E02B7/06
CPCE02B7/06
Inventor 杨和明
Owner SINOHYDRO BUREAU 11 CO LTD