Reservoir emptying tunnels for super high dams above 200 meters and their layout methods and uses

A technology of ultra-high dams and venting holes, which is used in water conservancy projects, marine engineering, construction, etc. to ensure safety management and emergency disposal, and save resources.

Inactive Publication Date: 2017-07-14
CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the deficiencies in the prior art, the present invention provides a super-high dam reservoir vent hole that solves the problem of super-high dam reservoir venting over 200 meters

Method used

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  • Reservoir emptying tunnels for super high dams above 200 meters and their layout methods and uses

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Experimental program
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Effect test

Embodiment 1

[0023] This embodiment relates to a vent hole for a super-high dam reservoir with a height of more than 200 meters.

[0024] In the mountain body of the super high dam reservoir above 200 meters, there are such figure 1 As shown in the emptying hole, the emptying hole body 31 is arranged in an inverted "U" shape in the mountain body 41, and is used to connect the upstream reservoir and the downstream river; The water outlet 21 is located at the bottom 11 of the upstream reservoir, and a water outlet 22 is provided at the connection between the emptying cavity body 31 and the downstream channel 14, and the elevation of the water inlet 21 is higher than the elevation of the water outlet 22, that is, the height of the water inlet 21 from the sea level is higher than The height of the water outlet 22 from the sea level; the downstream side of the emptying cavity body 31 top is provided with an emptying gate 32, and the elevation difference of the emptying gate 32 from the upstream...

Embodiment 2

[0026] This embodiment relates to a method for arranging the vent hole of a superhigh dam reservoir with a height of more than 200 meters, including the following steps:

[0027] Step 1: Set up a water inlet at the connection between the mountain body and the bottom of the upstream reservoir;

[0028] Step 2: setting a water outlet at the connection between the mountain body and the downstream river, the elevation of the water inlet is higher than the elevation of the water outlet;

[0029] Step 3. Arrange an inverted "U"-shaped venting cavity in the mountain body, and the side wall of the cavity is well sealed;

[0030] Step 4. Set up a venting gate on the downstream side of the top of the venting cavity. It is required that the water pressure generated by the difference between the elevation of the venting gate and the checked flood level of the upstream reservoir cannot be greater than the bearable water pressure of the venting gate;

[0031] Step 5: The hole diameter of t...

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Abstract

The invention relates to a reservoir emptying tunnel for an over 200-meter ultrahigh dam. The reservoir emptying tunnel comprises an emptying tunnel body formed in a mountain. The emptying tunnel body is provided with a water inlet located at the bottom of a reservoir, a water outlet communicated with a downstream river channel and an emptying gate arranged in the emptying tunnel body. The emptying tunnel body is in an inverted U shape, and the elevation of the water inlet is higher than that of the water outlet. The emptying gate is located on the downstream side of the top of the emptying tunnel body. The invention further relates to a method for arranging the reservoir emptying tunnel for the over 200-meter ultrahigh dam and application. The obtained reservoir emptying tunnel for the over 200-meter ultrahigh dam effectively reduces water pressure borne by the emptying gate, and the problem of emptying of a reservoir for the over 200-meter ultrahigh dam is solved under existing gate technical conditions.

Description

technical field [0001] The present invention relates to a vent hole of a reservoir, in particular to a vent hole of a super-high dam above 200 meters, and at the same time, the invention relates to a method for arranging the vent hole and its application. Background technique [0002] my country is in the stage of rapid development of super-high dams over 200 meters in height. As of 2012, my country has built 7 super-high dams with a height of more than 200 meters, such as the Xiaowan Dam with a height of 294.5 meters, the Shuibuya Dam with a height of 233 meters, and the Guangzhao Dam with a height of 200.5 meters; 7, such as the 305-meter-high Jinping Class I Dam; and the proposed 8, such as the Shuangjiangkou Dam, which is 314 meters high. These projects, which have been built, are under construction and are planned to be built, have huge comprehensive benefits such as power generation and flood control, and have a particularly significant impact on the development of my ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B8/06
Inventor 邓刚李维朝夏庆福陈锐温彦锋于沭张延亿刘坚
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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