Connector of concrete dam and earth dam in coastal wide river valley region

A concrete dam and coastal technology, applied in dams and other directions, can solve problems such as slope protection damage, and achieve the effect of alleviating wave energy concentration and avoiding slope instability.

Active Publication Date: 2012-08-01
POWERCHINA ZHONGNAN ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is: aiming at the problem that the upstream wrapping heads of the plug-in joints of concrete dams and earth dams in the existing coastal wide valley areas are affected by high wind speed and cause slope protection damage, the present invention aims to provide a wide coastal valley area The joint between the concrete dam and the earth dam, which can greatly relieve the concentration of wave energy, avoid damage to the slope protection, and effectively prolong the life of the earth dam

Method used

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  • Connector of concrete dam and earth dam in coastal wide river valley region
  • Connector of concrete dam and earth dam in coastal wide river valley region
  • Connector of concrete dam and earth dam in coastal wide river valley region

Examples

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Embodiment Construction

[0025] A joint of concrete dams and earth dams in coastal wide valley areas, such as Figure 1~3 As shown, the upstream wrapping head of the concrete dam and earth dam joint is the upstream side wrapping head 5 of the plug-in joint, and the β between the outer contour line 1 of the upstream side wrapping head and the horizontal projection line 4 of the dam axis is greater than 120° An obtuse angle, preferably 150°, has a better effect of alleviating wave energy concentration.

[0026] When the present invention is applied to the Dawei typhoon wrapping repair of Hainan Daguangba Hydropower Station, the earth dam filling soil, clay and drainage sand belt upstream of the joint are the same as the original design structure, and the key to innovation is the upstream wrapping of the joint. Using different thicknesses of riprap from the beginning of the joint earth dam, the intersection angle β between the outer contour line of the head and the horizontal projection line 4 of the dam...

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Abstract

The invention discloses a connector of a concrete dam and an earth dam in a coastal wide river valley region and belongs to the field of connectors of the concrete dams and the earth dams. For solving the problems that a protected slope is damaged because a wrapped head on the upstream side of a traditional inserted connector is influenced by high wind speed, the connector of the concrete dam and the earth dam in the coastal wide river valley region is provided and belongs to an inserted connector; the inserted connector is provided with an upstream side wrapping head; and an intersection angle beta between an outer contour line of the upstream side wrapping head and a horizontal protection line of a dam axis is an obtuse angle greater than 120 degrees. According to the connector disclosed by the invention, the wave energy concentration is greatly relived and the threat that the upstream slope of the earth dam is changed and is unstable or even collapses; and the connector is especially suitable for wide river valley regions with high wind speeds.

Description

technical field [0001] The present invention is mainly applicable to the plug-in joint upstream of the earth dam at the junction of the earth dam and the concrete dam in the wide valley area along the coast (referred to as the upstream wrapping head), especially suitable for the wide valley area with high wind speed. Background technique [0002] In the process of human beings resisting natural floods and droughts, dam building has a long history. The earliest dam type used was earth dam. Earth dams have good foundation conditions and strong earthquake resistance, but they are not conducive to the layout of dam body drainage structures. [0003] With the development of dam-building technology and the invention of new dam-building materials, concrete dams, which are conducive to the arrangement of dam body discharge structures, have become the preferred dam type. However, in wide valley areas, the dam axis is longer and the riverbed cover is deeper. The economical efficienc...

Claims

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Application Information

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IPC IPC(8): E02B7/04
Inventor 曾雪艳王庆祥赵红敏夏建平
Owner POWERCHINA ZHONGNAN ENG
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