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Coupling structure of gravity dam and unfavorable geological bank slope and the construction method thereof

A technology for connecting structures and construction methods, which can be used in basic structure engineering, excavation, water conservancy projects, etc., and can solve problems such as untimely support of slopes, prominent construction safety problems, and bad bank slope connection problems, so as to improve construction safety , Guarantee the effect of safe operation and reliable connection

Active Publication Date: 2009-10-28
POWERCHINA HUADONG ENG COPORATION LTD
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  • Abstract
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Problems solved by technology

[0003] At present, some projects have solved the problem of connection between individual gravity dams and slopes with poor geological conditions by using engineering measures such as anchors and slabs. Defects such as untimely maintenance and prominent construction safety problems

Method used

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  • Coupling structure of gravity dam and unfavorable geological bank slope and the construction method thereof
  • Coupling structure of gravity dam and unfavorable geological bank slope and the construction method thereof

Examples

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Embodiment Construction

[0018] Such as figure 1 , figure 2 As shown, in this embodiment, a group of anti-slide piles is evenly arranged at the junction of the gravity dam and the bad geological bank slope, the pile top is basically flat with the dam crest road surface 6, and the diameter of the pile body connected to the dam outline 9 is smaller than that of other piles. The diameter of the pile body is large. In order to ensure the stability of the bank slope, each pile body must completely pass through the strongly weathered crushing zone 8 and penetrate into the weakly weathered rock mass by no less than 1 / 4 of the length of the pile body. In order to ensure the safety of pile well excavation, reinforced concrete support is used around the pile well, and inter-pile boards 3 are arranged on the slope between adjacent anti-slide piles to prevent local instability of the slope between piles. Prestressed anchor cables 4 are arranged on the upper part of the body to reduce the deformation of the pile...

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Abstract

The invention relates to a coupling structure of gravity dam and unfavorable geological bank slope and the construction method thereof, aiming at improving the strained condition of unfavorable geological bank slope and ensuring the stability of side slope in the form of active support. The technical scheme for solving the problem refers to a coupling structure of gravity dam and unfavorable geological bank slope and is characterized in that a group of anti-slide piles are evenly arranged at the joint of the gravity dam and unfavorable geological bank slope; the sloping surfaces among the adjacent anti-slide piles are provided with inter-pile plates; the upper part of the pile body of the anti-slide pile is provided with a prestress anchor rope; and a water-seal groove is arranged betweenthe dam body and the anti-slide pile connected with the dam body. The invention is mainly used in hydraulic and hydro-power engineering.

Description

technical field [0001] The invention relates to a connection structure between a gravity dam and an unfavorable geological bank slope and a construction method thereof. Mainly used in water conservancy and hydropower projects. Background technique [0002] Gravity dam is one of the important dam types widely used in water conservancy and hydropower projects. Due to the complex topographic and geological conditions in the west and the working characteristics of the gravity dam itself, the connection between the gravity dam and the bank slopes on both sides often has high slopes and super high slopes. When the geological conditions of the slope are unfavorable, the slope stability problem is often caused. [0003] At present, some projects have solved the problem of connection between individual gravity dams and slopes with poor geological conditions by using engineering measures such as anchors and slabs. However, there are shortcomings such as untimely maintenance and prom...

Claims

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Application Information

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IPC IPC(8): E02B7/00E02D17/20
Inventor 涂祝明叶建群
Owner POWERCHINA HUADONG ENG COPORATION LTD
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