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Judgment method and application of occlusion performance of beam-grid dam

A discrimination method and occlusion technology, which are applied in the fields of construction engineering design and debris flow prevention and control engineering, can solve the problem of not considering the characteristics of debris flow, and achieve the effect of simple and easy-to-use structure and easy acquisition.

Active Publication Date: 2019-03-29
INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method only considers the characteristic size of the dam body (b / d max ), without considering the nature and characteristics of debris flow, it is also too simple

Method used

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  • Judgment method and application of occlusion performance of beam-grid dam
  • Judgment method and application of occlusion performance of beam-grid dam
  • Judgment method and application of occlusion performance of beam-grid dam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 , figure 2 As shown, the method of the present invention is applied to the design of beam spacing parameters of a beam-type grid dam in a debris flow ditch in Sichuan Province.

[0032] A debris flow ditch is located on the left bank of a first-order tributary of a river in Sichuan Province. It is a frequently active debris flow ditch in the northern section of a certain railway traffic trunk line. The drainage area of ​​the ditch is about 13.6km 2 , the length of the main ditch is about 8.4km, and the average longitudinal gradient of the main ditch is 155‰. A large-scale debris flow broke out in the ditch, causing serious economic losses and casualties. In order to ensure the normal operation of railway traffic and the safety of life and property of local residents, a series of prevention and control projects have been built on the debris flow ditch, among which the 5# sand control dam of the main ditch, which is located in the middle and upper rea...

Embodiment 2

[0037] The method of the present invention is applied to the parameter design of the cross-beam spacing of a beam-type grid dam to be built in a certain debris flow ditch of a tributary of the Dadu River.

[0038] A debris flow ditch is located on the right bank of a tributary of the Dadu River, and it is a debris flow ditch with relatively frequent activities in the region. The drainage area of ​​the ditch is about 1.45km 2 , the length of the main ditch is about 2.78km, and the average longitudinal gradient of the main ditch is 241‰. The dangerous area of ​​the debris flow ditch is mainly distributed in the submerged or silted areas of the debris flow ditch mouth and the upper and lower reaches of the main river due to river blockage.

[0039] In order to effectively control the debris flow, prevent the debris flow from blocking the river, intercept the debris flow and stabilize the ditch bed, reduce the debris flow disaster, protect the regional infrastructure construction...

Embodiment 3

[0044] The method of the present invention is applied to the parameter design of the cross-beam spacing of a beam-type grid dam to be built in a debris flow ditch in Jiuzhaigou Scenic Area.

[0045] A mud-rock flow ditch is located in Jiuzhaigou Scenic Area. In recent years, due to frequent human economic activities, the mud-rock flow tends to be active. The drainage area of ​​the ditch is about 2.1 km 2 , the length of the main ditch is about 2.5km, and the average longitudinal gradient of the main ditch is 398‰. The main hazards of mudslides are: destroying forests, threatening the safety of tourist roads, threatening the life and property safety of tourists and local residents, destroying the natural landscape of scenic spots, and affecting the development of local tourism.

[0046] In order to protect the unique local landscape resources and ecological environment and develop a sustainable eco-tourism industry, it is planned to build a beam-type grille dam in the main dit...

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Abstract

The invention discloses a beam type grating dam blocking performance judgment method. Aiming at the problem that in the prior art factors which can affect the blocking performance of a beam type grating dam are too briefly considered, the invention provides the beam type grating dam blocking performance judgment method which takes three main factors and relationship of the three factors, namely, the volume weight of debris flow, the grain composition of debris flow and the distance between transverse beams of the grating dam, into account firstly. According to the method, a blocking critical judgment index F is calculated according to the function relationship of the three factors, and furthermore, the blocking performance of the dam is judged according to different spaces corresponding to F. The invention further provides application of the method in design of the beam type grating dam. The application is to confirm a design value B of the distance among the transverse beams of the beam type grating dam. The method disclosed by the invention is reasonable in principle, simple and convenient in calculation process, easy in acquiring parameters in judgment equations, and particularly applicable to demands of the engineering field.

Description

technical field [0001] The invention relates to a method for judging the occlusion performance of a beam-type grille dam and an application method thereof, belonging to the fields of debris flow prevention and control engineering and construction engineering design. Background technique [0002] In debris flow prevention and control projects, the beam-type grille dam is an important permeable sand-retaining dam, which is formed by arranging beams supported by buttresses to form transverse wide seams. Play the function of intercepting debris flow but discharge perennial water or sand-carrying flood, and at the same time, it can prolong the service life of the project, and has a better prevention and control effect than the physical dam. Compared with solid dams, permeable sand check dams represented by beam grid dams also have a better interception effect on driftwood carried in debris flows. In addition, the beam-type grid dam also has the advantages of low engineering cost...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/13G06Q50/08
Inventor 游勇孙昊柳金峰杨东旭赵海鑫
Owner INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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