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Reinforcing method for underwater concrete for blocking gate of hydropower station diversion tunnel

A kind of underwater concrete and concrete technology, which is applied in hydropower stations, hydropower, water conservancy projects, etc., can solve the problems of blocking accidents, interfering with construction progress, and high cost of steel gates, achieving good sealing performance, reducing design length, The effect of simplification of construction steps

Inactive Publication Date: 2016-03-23
中国安能集团第一工程局有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are that the steel gate has high cost, high precision, and complicated installation. It needs hoist, installation frame and door crane when the gate is lowered; Leakage stopper; sometimes it will cause a blockage accident as follows: the gate is blocked

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The diversion tunnel gate of the hydropower station according to the present invention is used to block the underwater concrete reinforcement method, the main steps of which are as follows:

[0018] (1) Install the door slot and door top formwork. The door slot formwork is welded on the gate body during the gate installation process with 2.5mm iron plate. The door top formwork is molded and reinforced after the gate is installed, and a fixed steel pipe safety protective railing;

[0019] (2) Concrete collecting hopper, conduit and lifting frame are installed, each water inlet tower is installed in place, and imported plugging materials are prepared, and 40t cargo ships, lifeboats, and 20t traffic boats are prepared; concrete conveying equipment is in place;

[0020] (3) The entrance gate is closed. After the gate is closed, two underwater operation groups are carried out at the same time before the gate is opened and after the gate. The operation team needs two groups ...

Embodiment 2

[0027] The diversion tunnel gate of the hydropower station according to the present invention is used to block the underwater concrete reinforcement method, the main steps of which are as follows:

[0028] (1) Install the door slot and door top formwork. The door slot formwork is welded on the gate body during the gate installation process with 2.5mm iron plate. The door top formwork is molded and reinforced after the gate is installed, and a fixed steel pipe safety protective railing;

[0029] (2) Concrete collecting hopper, conduit and lifting frame are installed, each water inlet tower is installed in place, and imported plugging materials are prepared, and 40t cargo ships, lifeboats, and 20t traffic boats are prepared; concrete conveying equipment is in place;

[0030] (3) The entrance gate is closed. After the gate is closed, two underwater operation groups are carried out at the same time before the gate is opened and after the gate. The operation team needs two groups ...

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Abstract

The invention relates to a building construction method, in particular to a reinforcing method for underwater concrete for blocking a gate of a hydropower station diversion tunnel, namely the construction method for the water blocking condition in the hydropower engineering construction process. The reinforcing method includes the main steps of (1) mounting a gate groove formwork and a gate top formwork, (2) mounting a concrete aggregate bin, a conduit and a lifting frame, (3) installing the inlet gate, (4) constructing the underwater concrete, (5) compounding the underwater concrete and preparing for pouring of the underwater concrete, (6) pouring the underwater concrete and (7) treating jamming and pipe blocking phenomena in time. According to the reinforcing method, drain pipes and a high wall are not needed in leakage stopping construction in the diversion tunnel, and the construction steps are simplified.

Description

technical field [0001] The invention relates to a building construction method, in particular to a construction method used in the case of water blocking during the construction of a hydropower project. Background technique [0002] The plugging of diversion tunnels with known spatial positions shall be determined according to the overall construction progress on the premise of meeting the requirements for flood retention and water storage of the reservoir. At present, it is mainly blocked by steel gates. The diversion hole needs to be precast with a complex gate-style gate. A gate slot is set in the gate, and the second-stage concrete is poured in the gate slot to place embedded parts, and the steel that moves in the gate slot gate. The disadvantages are that the steel gate has high cost, high precision, and complicated installation. It needs hoist, installation frame and door crane when the gate is lowered; The leak stopper; sometimes it will cause a blockage accident as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B9/06E02D15/06
CPCE02B9/06E02D15/06Y02E10/20
Inventor 黄宗营息殿东张礼宁刘琪鲁程伟郭长林薛香臣黎柏言
Owner 中国安能集团第一工程局有限公司
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