Cross-hole rapid construction method for roller compacted concrete dam
A technology of roller compacted concrete and construction method, which is applied in dams, water conservancy projects, marine engineering and other directions, can solve the problems of quality and safety that cannot be effectively solved in rapid construction, low reliability, and insufficient concrete pouring, so as to shorten the construction period. The effect of construction period, ensuring construction quality, prefabrication and convenient installation
Active Publication Date: 2022-03-29
中国水利水电建设工程咨询贵阳有限公司 +1
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Problems solved by technology
[0005] However, the prefabricated structure has quality and safety problems such as leaking due to insufficient concrete pouring at the top of the hole in the later stage, and water seepage at the construction joint surface between the prefabricated beam and the concrete in the hole, and the reliability is not high.
It cannot effectively solve the quality and safety problems of rapid construction of cross-holes in roller compacted concrete dams
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[0039] The technical solution of the present invention is further described below, but the scope of protection is not limited to the description.
[0040] like Figure 1 to Figure 7 As shown, a kind of roller compacted concrete dam span-hole rapid construction method of the present invention comprises the following main steps:
[0041] Step 1. According to the width of the dam body hole structure 3, prefabricated concrete slab 4 is made in advance; when in use, the width of the dam body hole structure 3 is 4.5m, and the size of the precast concrete slab 4 is designed to be 7.5m×1m×0.5m (length x width x height).
[0042] Step 2. When the dam body roller compacted concrete 1 is constructed to the height of the dam body hole structure 3 bottom plate, the dam body hole structure 3 is reserved on the left and right sides of the design position of the dam body hole structure 3, and the dam body is rolled. Concrete 1 continues to rise as a whole, and copper water stop 2 is install...
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The invention discloses a cross-hole rapid construction method for a roller compacted concrete dam, and belongs to the technical field of water conservancy and hydropower engineering construction. The method comprises the steps that firstly, prefabricated concrete planks are manufactured in advance; secondly, a dam body hole structure is reserved, dam body roller compacted concrete continues to rise integrally, and a copper water stop is installed; thirdly, roller compacted concrete construction outside a dam body hole structure is conducted firstly, prefabricated concrete planks and copper water stops are installed, and grouting pipe sets are installed in the installation process of the prefabricated concrete planks; fourthly, supporting frame installation work is completed in the dam body hole structure; fifthly, metamorphic concrete is poured on the prefabricated concrete planks, and dam body roller compacted concrete is poured through a bin; sixthly, the supporting frame is dismantled; seventhly, a square normal concrete structure is constructed; and eighthly, grouting is conducted on the construction joints through the grouting pipe set. And under the condition that concrete at the top of the dam body hole is not fully poured, backfill grouting is performed on the concrete at the top of the hole for filling.
Description
technical field [0001] The invention relates to a rapid construction method for a roller compacted concrete dam spanning a hole, and belongs to the technical field of water conservancy and hydropower engineering construction. Background technique [0002] Roller compacted concrete is a kind of dry, hard and cement-poor concrete. Roller compacted concrete dams not only have the characteristics of small concrete volume, high strength, good anti-seepage performance, and overflowable dam body, but also have simple, fast and economical construction procedures for earth-rock dams. , Can use the advantages of large general-purpose machinery. [0003] In roller compacted concrete dams, in order to vent, flood discharge and ecological flow, etc., bottom holes are generally set in the dam body, and the existing dam body bottom hole concrete is generally cast-in-place. The construction of the cast-in-place concrete hole requires the concrete construction of the bottom slab first, and ...
Claims
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IPC IPC(8): E02B7/04E02B3/16E02D15/02
CPCE02B7/04E02B3/16E02D15/02
Inventor 申林辉钟远福吴强贺姗陈建新
Owner 中国水利水电建设工程咨询贵阳有限公司
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