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A composite debris flow blocking system

A kind of debris flow, composite technology, applied in marine engineering, construction, artificial waterway, etc., can solve problems such as unsatisfactory debris flow effect, achieve strong resistance to geological disasters, reduce impact and destructive effects

Active Publication Date: 2021-07-30
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of unsatisfactory prevention and control of debris flow in the existing way of building interception dams, the present invention provides a composite debris flow retaining system, the core of which is to establish a multi-level and multi-functional prevention mechanism in the flow channel where debris flow often occurs, To carry out elastic interception, partial interception, regional retention, deceleration and energy dissipation of debris flow, etc., so as to greatly reduce the impact and destructiveness of debris flow, and the diversion system has a strong ability to resist geological disasters

Method used

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  • A composite debris flow blocking system
  • A composite debris flow blocking system
  • A composite debris flow blocking system

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Experimental program
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Effect test

Embodiment 1

[0039] Such as figure 1 As shown, a composite debris flow blocking system is arranged in the debris flow channel 2 formed between the highlands 1 on both sides. According to the flow direction 3 of the debris flow in the debris flow channel 2, the blocking system includes sequentially setting The entrapment deceleration zone 4, the hedge energy dissipation zone and the interception dam 9, wherein the entrapment deceleration zone 4 includes a number of protrusions arranged in the debris flow channel 2, and there are gaps between the protrusions, so that the flow through The debris flow is decelerated and intercepted; the hedging energy dissipation zone includes a diverter dam 6 that divides the debris flow into at least two strands, and the two divided debris flows are respectively guided by the hedging guide device 8 to form a convection that flows in an intersecting direction, and then when they meet The hedge forms turbulent flow to dissipate the debris flow; the interceptio...

Embodiment 2

[0043] This embodiment is an improvement made on the basis of Embodiment 1, its basic structure is the same as that of Embodiment 1, and the improvements are as follows: figure 2 , 4 , 5 and 6, the diverter dam 6 includes a semi-conical first dam body 601, and the semi-conical tip faces the direction of the debris flow, thereby forming two first diverter channels 605 on both sides thereof;

[0044] The counter guide device 8 includes a first arc-shaped guide dam 801 and a second arc-shaped guide dam 802 respectively arranged in front of the flow direction of the two first branch channels 605, wherein the first arc-shaped guide dam 801 and the second arc-shaped guide dam 801 Shaped guide dams 802 are arranged obliquely on both sides of the debris flow channel 2, and one end of the first arc-shaped guide dam 801 and the second arc-shaped guide dam 802 at the edge of the debris flow channel 2 is closer to the debris flow flow direction 3 than the other end. so that the two stre...

Embodiment 3

[0049] This embodiment is an improvement made on the basis of Embodiment 2, its basic structure is the same as that of Embodiment 2, and the improvements are as follows: Figure 5 and 6 As shown, the inside of the first dam body 601 is a hollow structure, and a number of permeable holes 602 are distributed on its surface. A water flow channel 606 is formed; an arched stabilizing portion 603 is provided at the end of the first dam body 601 opposite to the tapered tip, and several supporting columns 604 are arranged in the arched stabilizing portion 603, and there are gaps between these supporting columns 604, Thus, a grid-shaped structure for filtering the water flow channel 606 is formed.

[0050] In this embodiment, the first dam body 601 is in the shape of a semi-cone, which is actually a shape in which a cone is cut in half along its axial direction. During the large process, the first dam body 601 will be submerged gradually from the tip part gradually. Because there are...

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Abstract

A composite debris flow blocking system, the blocking system is set in the debris flow channel formed between the highlands on both sides, and according to the flow direction of the debris flow in the debris flow channel, the blocking system includes an interception deceleration area, a hedging energy dissipation area and an interception area arranged in sequence. The dam intercepts the deceleration area to decelerate and intercept the debris flow flowing through it. The hedging energy dissipation area diverts the debris flow and guides it to hedge against each other to dissipate energy. The interception dam intercepts the debris flow channel and is used to intercept the debris flow. The present invention establishes a multi-level and multi-functional prevention and control mechanism consisting of interception deceleration area, hedge energy dissipation area and interception dam in the flow channel where debris flow often occurs, to carry out elastic interception, partial interception, regional retention, deceleration and energy dissipation of debris flow etc., thereby greatly reducing the impact and destructiveness of debris flow, and the blocking system has a strong ability to resist geological disasters, even if it is partially damaged, it will not have a great impact on the prevention and control effect.

Description

technical field [0001] The invention relates to the field of prevention and control of geological disaster mud-rock flow, in particular to a composite mud-rock flow blocking system. Background technique [0002] Debris flow refers to a special torrent carrying a large amount of sediment and stones due to landslides caused by heavy rain or other natural disasters in mountainous areas or other areas with deep valleys and steep terrain. Debris flow has the characteristics of suddenness, fast flow rate, large flow rate, large material capacity and strong destructive force. Debris flows often destroy highways, railways and other transportation facilities and even villages and towns, causing huge losses. [0003] The whole process of debris flow generally only takes a few hours, and the shortest is only a few minutes. It is a natural disaster widely distributed in some countries with special topography and landform conditions. This is a mixed flow of soil, water and air between ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B5/08E02B8/06
CPCE02B5/08E02B5/082E02B5/085E02B8/06
Inventor 王忠福徐志强王博李倩倩杨成才李冬冬
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER