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A super-high water head planar sliding accident gate groove structure

An emergency gate and high water head technology, which is applied in water conservancy projects, marine engineering, construction, etc., can solve problems such as cavitation, cavitation, water column cannot be closed, concrete damage, etc., so as to improve hydraulic conditions and reduce cavitation Effects of cavitation and wind speed reduction

Active Publication Date: 2018-11-09
CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a super-high water head planar sliding accident gate groove structure to solve the problem that the existing traditional Type II gate groove and water column closed gate groove are complex in mechanics and prone to cavitation cavitation, and the water column may not be able to effectively form and cannot be closed. During the closing process of doors and gates, the high-speed water flow surging in the door slot washes away the second-stage concrete of the door slot lintel and the second-stage concrete of the bottom sill of the door slot.

Method used

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  • A super-high water head planar sliding accident gate groove structure
  • A super-high water head planar sliding accident gate groove structure
  • A super-high water head planar sliding accident gate groove structure

Examples

Experimental program
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Effect test

Embodiment

[0051] The extra-high water head planar sliding emergency gate groove in this example includes an upstream parapet 5 , a gate slot 3 and a downstream parapet 6 .

[0052] The relationship between the width W of the door slot and the depth D of the door slot is: W / D=1.55~2.0; the heights on both sides of the door slot 3 are different, and the relationship between the height difference △ and the width W of the door slot is: △ / W=0.05~0.08; The relationship between the height difference △ and the slope length X is △ / X=0.05~0.1; the outer corner of the upstream facing water surface of the door slot 3 is rounded, and the fillet radius R1=50~200mm, preferably 80mm or 100mm; the inner corner of the door slot 3 is rounded , the fillet radius R2=50~200mm, 80mm or 100mm is preferred; the external fillet of the downstream surface of the door slot 3, the relationship between the fillet R3 and the depth D of the door slot is: R3=0.1D, 50mm or 100mm is preferred; the upstream The relationshi...

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PUM

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Abstract

The invention discloses an extra-high water head plane sliding emergency gate groove structure which comprises a bottom sill (2) located at the bottom between two gate piers (1). The two ends of the bottom sill (2) are connected with a gate groove (3), the upper portion of the bottom sill (2) is provided with a drainage hole (4), the two gate piers (1) above the drainage hole (4) are connected through an upstream breast wall (5) and a downstream breast wall (6), an all-steel lining structure is adopted within a 1.5-2 times orifice height range from the gate groove to the bottom sill, all corners of the gate groove are of a fillet structure, and three stages of inclined plane steps deviated towards the upstream part are arranged on the upstream surface of the downstream breast wall from top to bottom. Hydraulics conditions of the gate groove are improved, and cavitation erosion of the gate groove is reduced; a water column force can continuously act on a gate to be favorable for closing the gate safely. The integral steel lining structure is adopted, and the cavitation erosion inside the gate groove is avoided. The upstream face of the outer edge of the upper portion of a main rail is provided with an L-shaped notch, and the sliding-down wearing capacity of a gate water seal can be effectively reduced.

Description

technical field [0001] The invention relates to a gate groove structure for an extra-high water head plane sliding accident, belonging to the technical field of metal structures of water conservancy and hydropower projects. Background technique [0002] Plane sliding accident gates generally use water column dynamic water to close the door. Because the formation of water column is related to the shape of the door groove, considering the safety of closing the door, it is usually used for water inlet accidents or fast gates with low flow rates. In recent years, due to the increasing scale of plane fixed wheel and plane sprocket gates used for sluice sluice holes, the water pressure has also increased, and the plane fixed wheel and plane sprocket gates usually adopt the upstream water-stop type, which makes When the gate is in the water-retaining state, the upstream breast wall bears a lot of water pressure, the breast wall thickness is relatively large, and the investment in c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B7/20
CPCE02B7/20
Inventor 王兴恩
Owner CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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