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A frame type debris flow sand retaining dam and its construction method

A technology for sand control dams and debris flow, applied in the field of debris flow prevention and control, can solve problems such as uneven foundation settlement of sand control dams, difficulty in controlling construction quality, and affecting safe operation of the dam body, so as to reduce the strength of the dam body, save investment, and maintain The effect of cost reduction

Inactive Publication Date: 2011-12-28
INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the sand control dam with masonry structure and its construction method have the following defects: First, due to the huge difference in lithology in different watersheds, some gravels are very suitable as masonry aggregates, and some gravels cannot be used as masonry aggregates. It is difficult for general construction units to accurately grasp the construction quality, which makes it difficult to control the construction quality; second, the debris flow valley is generally covered with thick loose gravel soil, and the thickness is not uniform, and uneven settlement of the foundation of the sand check dam often leads to cracking of the dam body , which affects the safe operation of the dam body; thirdly, after the masonry dam body is damaged inside, it is difficult to repair, and the strength of the repaired dam body is greatly reduced, which affects the long-term use

Method used

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  • A frame type debris flow sand retaining dam and its construction method
  • A frame type debris flow sand retaining dam and its construction method
  • A frame type debris flow sand retaining dam and its construction method

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Experimental program
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Embodiment 1

[0025] like figure 1 , figure 2 , image 3 , Figure 4 shown. The drainage area of ​​a debris flow ditch is 24.2km 2 , in order to control debris flow disasters, it is planned to set up 15 valley squares, 1 control sand dam and 700m drainage channel in the middle of the basin. In order to make the sand control dam achieve the purpose of control type, the frame type debris flow sand control dam of the present invention is adopted. The frame-type debris flow sand control dam includes a dam body foundation 2 and a dam body body arranged on the dam body foundation 2, and a reinforced concrete frame 1 and masonry stones 5 filled between the frame 1 constitute the dam body body. A number of reinforced concrete columns are connected vertically and horizontally on the horizontal plane to form a layer of horizontal beams 3. The frame 1 includes five layers of horizontal beams 3 and vertical beams 4 formed of reinforced concrete columns between every two layers of horizontal beams...

Embodiment 2

[0029] The same as Embodiment 1 will not be repeated, the difference is: the height of the sand retaining dam is 6.0m, the length of the dam axis perpendicular to the mainstream direction is 24m, the net dam height from the overflow to the dam body foundation 2 is 4.0m, and the width of the dam crest is 4.0m. is 2.0m, and the slope gradient inside the dam body is 1:0.7. The length a of the reinforced concrete column on the horizontal beam 3 and along the length direction of the sand control dam is 2.0m, the length b of the reinforced concrete column on the horizontal beam 3 and along the mainstream direction is 2.0m, and the reinforced concrete column on the horizontal beam 3 The cross-sectional area formed between them is 0.3×0.3m 2 The length h of the reinforced concrete column forming the vertical beam 4 is 2.0m, and the cross-sectional area formed between the vertical beam 4 and the horizontal beam 3 is 0.3×0.3m 2 . The overall volume reinforcement ratio of the reinforce...

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Abstract

The invention discloses a frame type debris flow sand retaining dam and a construction method thereof. The frame-type debris flow sand control dam includes a dam body foundation and a dam body body arranged on the dam body foundation, and a reinforced concrete frame and masonry stones filled between the frames constitute the dam body body. Compared with the prior art, the present invention aims at the situation that the dam body is damaged due to factors such as difficulty in controlling the construction quality and foundation subsidence of the currently widely used grouted-stone debris flow sand retaining dam. The dam is divided into relatively independent small spaces, and the strength of the dam body is enhanced in blocks. In the case of a small increase in investment, the strength of the dam body is greatly improved and the service life of the dam is extended; it is compatible with concrete dams, reinforced concrete dams with high strength and mortar masonry Dam investment saves two advantages in one.

Description

technical field [0001] The invention relates to a mud-rock flow prevention technology, in particular to a reinforced concrete frame-masonry type frame-type mud-rock flow sand retaining dam and a construction method thereof. Background technique [0002] Debris flow disaster is one of the main types of geological disasters in my country. With the development of the mountainous economy and the deepening of the western development, the demand for debris flow control is becoming more and more vigorous. As one of the main types of debris flow control projects, sand control dams are widely used in debris flow control. [0003] At present, the debris flow retaining dams mainly include masonry, concrete, reinforced concrete and other structural types. Restricted by social and economic conditions, masonry masonry structures are widely used in debris flow retaining dams in my country because the cost of masonry masonry structures is relatively cheap. However, the sand control dam w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B7/08
Inventor 陈晓清崔鹏游勇李德基
Owner INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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