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Assembled type debris flow silt dam and construction method thereof

A technology for sand control dams and debris flow, applied in the field of debris flow prevention and control, can solve problems such as being easily affected by construction seasons, large site environmental damage, and difficult transportation of construction materials, and achieve the effects of shortening the construction period, saving the construction period, and reducing the impact

Inactive Publication Date: 2011-09-14
INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to address the deficiencies of the prior art, and to provide a fast construction, high-efficiency construction method for the conditions that the construction of the existing sand retaining dam causes great damage to the site environment, difficult transportation of construction materials, long construction period and is easily affected by the construction season. Assembled debris flow sand retaining dam with less damage to the site, which can make full use of existing soil materials in any valley and its construction method

Method used

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  • Assembled type debris flow silt dam and construction method thereof
  • Assembled type debris flow silt dam and construction method thereof
  • Assembled type debris flow silt dam and construction method thereof

Examples

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Embodiment 1

[0037] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 shown. The drainage area of ​​a debris flow ditch is 5.6km 2 , in order to control debris flow disasters, it is planned to set up 5 Gufang, 1 sand dam and 700m drainage channel in the middle of the basin. For the sand retaining dam, the following construction methods are adopted:

[0038] In the first step, the net dam height H from the overflow of the sand dam to the dam foundation 2 is planned to be 6.0m, the width B of the dam crest 4 is 2.0m, and the slope gradient inside the dam body is 1∶m according to the situation of the debris flow ditch. 1:0.67. Since the net height H of the dam is less than or equal to 10.0m, it is planned to adopt the assembled debris flow sand retaining dam of the present invention. The assembled debris flow sand control dam includes several prefabricated reinforced concrete rectangular boxes 1 vertically and horizontally connected to form the main body of the dam body....

Embodiment 2

[0047] Such as figure 1 , figure 2 , Figure 4 , Figure 5 shown. The same as the first embodiment will not be repeated, the difference is:

[0048] The first step, for the debris flow ditch basin area of ​​10.0km 2 , the net dam height H from the overflow of the sand control dam to the foundation 2 of the dam body is planned to be 10.0m, the width B of the dam crest 4 is 3.0m, and the slope gradient 1:m inside the dam body is 1:0.7. Since the net height H of the dam is less than or equal to 10.0m, it is planned to adopt the assembled debris flow sand retaining dam of the present invention. According to the planned space size of the sand control dam, the geometric dimensions of the prefabricated rectangular box 1 are planned: ① According to the net dam height H from the overflow of the dam body to the dam body foundation 2 is an integer multiple n1 of the height h of the rectangular box body 1, It is preliminarily determined that n1 is taken as 10, and the height h of t...

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Abstract

The invention discloses an assembled type debris flow silt dam and a construction method thereof. The silt dam comprises a dam main body which is formed by vertically and horizontally connecting a plurality of prefabricated reinforced concrete rectangular box bodies; the top surface of each rectangular box body is opened, the rest five surfaces are sealed, and soil is filled into the rectangular box body; the dam main body is arranged on a dam body foundation; the dam abutment foundation of the silt dam and the inside slope of the dam body are filled with grouted stone or concrete; and the dam top is a grouted stone or concrete sealed top surface. Compared with the prior art, the invention fully utilizes the rapid assembly characteristic of the rectangular box bodies, can enable the rectangular box bodies to be prepared in the field far away from the slit dam in advance during the construction of the dam body foundation of the silt dam, thereby shortening the construction period and reducing the influence to the field peripheral environment of the silt dam; the rectangular box bodies can be directly filled with the current soil in a ditch, and thereby, the problem of great transportation of construction materials is solved; and compared with the traditional silt dam, the assembled type debris flow silt dam has the advantages of saving the engineering investment by 20-50 percent and shortening the construction period by 20-80 percent.

Description

technical field [0001] The invention relates to a mud-rock flow prevention technology, in particular to an assembled mud-rock flow sand retaining dam based on a rectangular box for quickly assembling a dam body 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 sand retaining dam mainly adopts a masonry structure, or a concrete structure, or a reinforced concrete structure, and its construction method is still on-site construction. The existing sand control dam and its construction method have the following defects: first, due to foundation excavation, material stacking, conc...

Claims

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Application Information

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IPC IPC(8): E02B7/08
CPCE02B7/10E02B8/00E02D17/205E02B7/02
Inventor 陈晓清李德基游勇崔鹏
Owner INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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