Construction method of canal slope without water repair based on canopy cofferdam

A construction method and technology of cofferdams, applied in water conservancy projects, infrastructure projects, artificial islands, etc., can solve the problems of high water head water delivery channels, etc., and achieve the effects of low assembly difficulty, small installation errors, and shortened construction time

Active Publication Date: 2020-12-01
河南省水利勘测设计研究有限公司 +2
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  • Abstract
  • Description
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Problems solved by technology

[0003] The invention provides a construction method for non-stop water repair of canal slopes based on a canopy cofferdam, and aims to solve the problem that the existing non-stop water cofferdam repair technology is not applicable to high-head water delivery channels

Method used

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  • Construction method of canal slope without water repair based on canopy cofferdam
  • Construction method of canal slope without water repair based on canopy cofferdam
  • Construction method of canal slope without water repair based on canopy cofferdam

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Embodiment Construction

[0031] The construction method of the present invention based on the canopy cofferdam to repair the channel slope without stopping water is mainly used for construction such as Figure 1-3 The cofferdam body shown specifically includes a first side support 1 arranged upstream of the slope perpendicular to the water flow direction and a second side support 2 arranged downstream of the side slope. The first side support 1 and the second side support 2 are located in the canal One end of the bottom is provided with a plug truss 3 connecting the two, and there are several main beams 4 made of I-shaped steel parallel to the direction of water flow at even intervals between the first side support 1 and the second side support 2. The beam 4, the first side support 1, the second side support 2, and the plug truss 3 are laid with panel units 5 connected in sequence by screw connection, and the first seepage water channel 6.1 is provided between the adjacent panel units 5. A water stop ...

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Abstract

The invention discloses a construction method for non-stopping water repair of a channel side slope based on a canopy cofferdam. The construction method comprises the following steps that firstly, anarea need to be repaired of the channel side slope is checked, after the size of a cofferdam main body is determined, tarpaulin is laid at the positions of a first side support, a second side supportand a plug truss on the side slope, and hoisting equipment including over-water construction platform is installed at the same time; secondly, the plug truss, the first side support, the second side support, a middle support and a main beam are assembled and connected segment by segment in the direction perpendicular to the waterflow direction on the shoreside of a channel, a panel unit and a floating box are installed, and at the same time, the hoisting equipment is connected to hoist all segments of assembled cofferdam main bodies into water in place segment by segment; and finally, after the cofferdam main bodies ire integrally installed in place, water in the cofferdam repairing area is wholly discharged through a submersible pump, then lining plates at different positions in the cofferdam repairing area are alternately repaired by adjusting the position of the middle support, and construction is completed. According to the method, the modular design is adopted, the field assembling difficulty is low, and the assembling time is short.

Description

technical field [0001] The invention relates to the technical field of slope repair of water delivery channels, in particular to a construction method for repairing channel slopes without stopping water based on canopy cofferdams. Background technique [0002] Usually, the engineering lining board laid on the slope of the main channel of large-scale water conveyance channels (such as the main channel of the South-to-North Water Diversion Project with a design water depth of up to 7m) is relatively thin, and the insulation board under the lining board is relatively large in deformation, so , After running for a certain period of time, it is inevitable that various slope damages will need to be repaired. For these single-line main canals, not only do they not have the conditions to stop the water for maintenance, but also have strict requirements on the water surface line and cross-section during operation. The existing cofferdam repair construction technology is only suitabl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D19/04E02B5/02E02D29/16E02D31/02
CPCE02B5/02E02D19/04E02D29/16E02D31/025
Inventor 贾少燕杨华军马耀辉李乔范向辉姚高岭邵新正姜辉余广川皇甫伟李飒李胜兵李富滨刘蒙娜吴昊张艺孟越袁欢王宏珺王帅
Owner 河南省水利勘测设计研究有限公司
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