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Panel construction method of concrete faced rock-fill dam

A technology of concrete slab and construction method, which is applied in the direction of filling, dams, barrages, etc., can solve the problems of shortened pouring time intervals and quality problems, and achieve the effects of reducing uneven settlement, preventing structural cracks, and avoiding voids

Active Publication Date: 2010-12-08
SINOHYDRO ENG BUREAU 15
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It recycles the bottom formwork, which is equivalent to shortening the time interval of staged pouring, so there are still quality problems caused by staged pouring

Method used

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  • Panel construction method of concrete faced rock-fill dam
  • Panel construction method of concrete faced rock-fill dam
  • Panel construction method of concrete faced rock-fill dam

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Embodiment Construction

[0022] The present invention will be further described below with the specific construction method of the main dam of the Gongboxia Hydropower Station on the Yellow River as an example.

[0023] The Gongboxia Hydropower Station of the Yellow River is located on the main stream of the Yellow River at the junction of Xunhua County and Hualong County in Qinghai Province. The upstream is 76km away from Lijiaxia Hydropower Station, the downstream is 148km away from Liujiaxia Hydropower Station, and 153km away from Xining City. The traffic conditions are convenient.

[0024] This project is a first-class large (I) project mainly for power generation, and also for irrigation and water supply. The total storage capacity of the reservoir is 620 million m 3 , the adjustment storage capacity is 75 million m 3 , for daily regulation of the reservoir. The installed capacity of the power station is 1500MW (five units with a capacity of 300MW), the guaranteed output is 492MW, and the avera...

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Abstract

The invention provides a panel construction method of concrete faced rock-fill dam, sequentially including the following procedures: vertical joint cushion layer and sloping surface renovating, emulsified asphalt spraying, reinforcing steel bar system safety, side form sealing up system safety, slip form system safety, concrete pouring, form removal maintenance and peripheral joint and vertical joint sealing up construction; wherein the concrete pouring adopts 'semi-closed type' chute warehousing, and pouring to the top in one step is carried out on the panel. The panel construction method of concrete faced rock-fill dam provided by the invention can carry out one-step construction of panel, thus reducing differential settlement among various dam materials after panel concrete construction, preventing structural crack of concrete panel after retaining water and avoiding that the top of the primary panel is cavity as construction is carried out by stages, so as to ensure the dam to operate safely.

Description

technical field [0001] The invention relates to a face construction method of a concrete face rockfill dam. Background technique [0002] Concrete face rockfill dams were built by throwing in the early days, and the vertical settlement and horizontal displacement were large. The settlement increased, and the concrete face cracked, resulting in a large amount of water seepage. The application of concrete face rockfill dams was limited until 1966. In the 1900s, large-scale vibratory rollers appeared, which significantly increased the rockfill density, reduced deformation, and reduced water seepage, making concrete face rockfill dams a widely used dam type. It can adapt to various terrain and geological conditions, and the construction is simple and convenient, and the progress is fast. At present, the main construction methods for the face of concrete face rockfill dams mainly include steel reinforcement installation, formwork installation, concrete pouring, form removal and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B7/06E02D17/18
Inventor 范亦农李宏伟李宜田杜晓刚孙剑峰
Owner SINOHYDRO ENG BUREAU 15
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