Debris flow blocking dam with automatic desilting function and building and using method

A debris flow and functional technology, applied in the field of debris flow protection engineering, can solve the problems of water sand and silt being unsuitable, and achieve the effects of convenient construction, prolonged service life and high cleaning efficiency

Active Publication Date: 2022-03-01
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

Considering the characteristics of solid-liquid two-phase body of debris flow, the particle size distribution of rocks ranges from a few centimeters to several meters, and is accompanied by the movement of mud. The current conventional cleaning methods of water, sand and silt are not suitable for debris flow dredging design

Method used

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  • Debris flow blocking dam with automatic desilting function and building and using method
  • Debris flow blocking dam with automatic desilting function and building and using method
  • Debris flow blocking dam with automatic desilting function and building and using method

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Experimental program
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Effect test

Embodiment 1

[0055] A kind of debris flow retaining dam with automatic dredging function of the present embodiment, such as figure 1 with figure 2 As shown, a debris flow retaining dam with automatic desilting function includes a debris flow energy dissipation water collection section A arranged upstream of the debris flow ditch, a large-grain stone block cleaning section B in the middle of the debris flow ditch, and a small debris flow ditch downstream of the debris flow ditch. Particle mud and sand blocking cleaning section C.

[0056] Debris flow energy dissipation water collection section A includes multiple energy dissipation water collection gabions 1 and multiple water collection basins 2 arranged in a staggered manner; Figure 3-4 As shown, the energy-dissipating water-collecting gabion 1 fixes the large-grained stones 14 into a cube by binding the mesh cage 1.1, and is arranged on the gabion base 1.2 made of concrete. The gabion base 1.2 is connected with the energy-dissipating ...

Embodiment 2

[0069] This embodiment provides a construction method of the debris flow retaining dam with automatic desilting function described in Embodiment 1, the specific steps are as follows: Step S1: According to the historical hydrogeological data of the debris flow 13 ditch, predict the flow rate of the debris flow 13 in the future , flow velocity parameters; along the flow direction of the debris flow 13, the debris flow 13 energy dissipation water accumulation section, the large particle stone block 14 blocking cleaning section and the small particle sand 15 cleaning section are arranged in sequence from the upstream to the downstream of the debris flow;

[0070] Step S2: Build the gabion base 1.2 and the sump 2 in the energy dissipation and water collection section of the debris flow 13, the gabion bases 1.2 are interlaced in the debris flow 13 ditch, the gabion base 1.2 is provided with the energy dissipation and water collection gabion 1, A permeable geotextile is provided betwe...

Embodiment 3

[0074] This embodiment provides a method for using the debris flow retaining dam with automatic desilting function described in Embodiment 1, and the specific steps are as follows:

[0075] Step S5: Clear stones, close the water pipe switches 10 on all the water delivery pipes 9, and open the water pipe switch 10 of the water inlet of the water-filled rubber body 5, so that the stone sliding body 6 of the stone sliding body 6 assembly and the stop protrusion After abutting, close the water pipe switch 10 of the water-filled rubber body 5 water inlet; start the gate starter 11 of the stone blocking and cleaning dam 3 and the gate starter 11 on the mud and sand cleaning dam to close the gate passage and the sand discharge port 4.2 ;

[0076] Step S6: dredging, start the gate actuator 11 of the stone blocking and cleaning dam 3 and the gate actuator 11 on the mud and sand cleaning dam to open the gate channel and the sand discharge outlet 4.2; close the water inlet of the water-f...

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Abstract

The invention relates to the technical field of debris flow protection engineering, and discloses a debris flow blocking dam with an automatic dredging function and a construction method of the debris flow blocking dam. A debris flow energy dissipation and water collection section, a large-particle stone blocking and cleaning section and a small-particle mud and sand blocking and cleaning section are sequentially arranged from upstream to downstream. The debris flow energy dissipation and water collection section realizes energy dissipation and solid-liquid separation of debris flow; the separated liquid, namely water, is used as a cleaning power source of the large-particle stone blocking and cleaning section and the small-particle mud and sand blocking and cleaning section, kinetic energy of debris flow is sequentially digested stage by stage, and stones and mud and sand are sequentially and respectively removed.

Description

technical field [0001] The invention relates to the technical field of mud-rock flow protection engineering, specifically, a mud-rock flow retaining dam with automatic dredging function and its construction and use method, which is used to dissipate energy of mud-rock flow to reduce the loss caused by mud-rock flow disasters . Background technique [0002] Debris flow refers to a special torrent carrying a large amount of mud, sand and stones caused by landslides caused by heavy rain, snowstorm or other natural disasters in mountainous areas or other areas with deep valleys and steep terrain. Debris flow is composed of solid-liquid two-phase flow. The solid phase is composed of coarse particles, and the liquid phase is composed of fine particles and water. It has the characteristics of suddenness, fast flow rate, large flow rate, large material capacity and strong destructive power. The occurrence of mudslides often destroys transportation facilities, farmland facilities an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B7/00E02B8/06
CPCE02B7/005E02B8/06
Inventor 吴帆陈晓清赵万玉陈剑刚
Owner INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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