KR-102963320-B1 - Eco-friendly erosion prevention device according to flexible construction of vulnerable ground debris flow protection facility

KR102963320B1KR 102963320 B1KR102963320 B1KR 102963320B1KR-102963320-B1

Abstract

The present invention relates to an eco-friendly scour prevention device based on flexible construction of a debris flow protection facility on vulnerable ground. The present invention relates to an eco-friendly scour prevention device (110) for flexible construction of a debris flow protection facility (100) on vulnerable ground, comprising: a net (101) that is fixedly installed across a valley of vulnerable ground by means of a plurality of foundation anchor bolts (105) and is capable of preventing human and property damage caused by soil runoff in cut slopes and mountainous areas; and a scour prevention device (110) that is installed on each side of the debris flow protection facility at both ends of the net (101) and prevents destruction and collapse caused by progressive scour occurring on the side of the debris flow protection facility. The scour prevention device (110) is configured with a pair of scour prevention mesh cloths (111a) (111b) that contain soil and gravel inside and support the wire rope (102) of the net (101) to pass through the center and adhere to the ground of the vulnerable ground. The present invention, configured as described above, is a debris flow disaster prevention facility that specifically prevents destruction and collapse caused by progressive scouring occurring on the side of a debris flow protection facility, and is capable of preventing major disasters caused by damage, loss, and landslides on the side of the debris flow protection facility in advance, and is capable of effectively preventing progressive scouring occurring on the side of the debris flow protection facility, thereby significantly improving the quality and reliability of an eco-friendly scouring prevention device.

Inventors

심석래

Assignees

주식회사 동아특수건설

Dates

Publication Date: 20260511
Application Date: 20250730

Claims (5)

This relates to an eco-friendly scour prevention device (110) based on flexible construction of a debris flow protection facility (100) on vulnerable ground, A net (101) that is fixedly installed across a valley of vulnerable ground by means of multiple foundation anchor bolts (105) to prevent human and property damage caused by soil runoff in cut slopes and mountainous areas; and A scour prevention device (110) is provided, which is installed on each side of the debris flow protection facility at both ends of the net (101) and prevents destruction and collapse caused by progressive scour occurring on the side of the debris flow protection facility; The above-mentioned scour prevention device (110) includes a pair of scour prevention mesh cloths (111a) (111b) that contain soil and gravel inside and support the wire rope (102) of the net (101) to pass through the center and adhere to the vulnerable ground surface; The above pair of scouring prevention mesh cloths (111a) (111b) are composed of three layers, wherein a narrow mesh (111-1) is provided to prevent soil from flowing out from the inside, a medium mesh (111-2) is provided on the outside of the narrow mesh (111-1) to prevent medium-sized sand from flowing out, and a wide mesh (111-3) is provided on the outside of the medium mesh (111-2) to prevent gravel-sized stones from flowing out, and the narrow mesh (111-1), the medium mesh (111-2), and the wide mesh (111-3) are formed as a single unit. A waterproof sheet (120) is provided between the above-mentioned pair of anti-scouring mesh sheets (111a) (111b) and the ground in contact with each other to prevent water from penetrating into the ground, and On the outer surface of the above pair of scouring prevention mesh cloths (111a) (111b), a binding wire (113) is provided to fix the pair of scouring prevention mesh cloths (111a) (111b) so that they do not separate from each other. The above-mentioned bundle wire (113) is passed through the gaps in the net (101) to connect the anti-scouring device (110) to the net (101) so as not to be separated from it, and An eco-friendly scour prevention device for flexible construction of a debris flow protection facility on vulnerable ground, characterized by having a second connecting wire (114a) provided at the upper and lower ends of each of the pair of scour prevention mesh cloths (111a) (111b), connected to the connecting portion (114b) of the pair of scour prevention mesh cloths (111a) (111b) and the connecting portion (114c) of the wire rope (102), which interconnects the entire net (101) so as not to be separated from the ground.
In claim 1, The above-mentioned scour prevention device (110) is, A plurality of first connecting wires (112a) provided at a connecting portion (112b) to interconnect a pair of anti-scouring mesh fabrics (111a) (111b) so as not to be separated from each other; and An eco-friendly scour prevention device for flexible construction of a debris flow protection facility on vulnerable ground, characterized by including anchor bolts (130) that are embedded in the ground at regular intervals and fix a pair of scour prevention mesh cloths (111a) (111b) so as not to be separated from the ground.
In claim 1, An eco-friendly scour prevention device for a vulnerable ground debris flow protection facility, characterized by flexible construction, wherein grass (150) is planted on the outer surface of the above pair of scour prevention mesh cloths (111a) (111b) to firmly hold the soil or effectively prevent soil loss to reduce loss damage and to improve greening and aesthetics.
In claim 2, An eco-friendly scour prevention device for flexible construction of a debris flow protection facility on vulnerable ground, characterized by passing the first connecting wire (112a) through the net (101) to connect the scour prevention device (110) so as not to be separated from the net (101).
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Description

Eco-friendly erosion prevention device according to flexible construction of vulnerable ground debris flow protection facility An embodiment of the present invention relates to an eco-friendly scour prevention device based on flexible construction of a debris flow protection facility on vulnerable ground. More specifically, it is a debris flow disaster prevention facility that prevents destruction and collapse caused by progressive scour occurring on the side of the debris flow protection facility, and is designed to prevent major disasters caused by damage, loss, or landslides on the side of the debris flow protection facility in advance, and effectively prevents progressive scour occurring on the side of the debris flow protection facility, thereby significantly improving the quality and reliability of the eco-friendly scour prevention device. Unless otherwise indicated in this specification, the contents described in this identification item are not prior art for the claims of this application, and are not recognized as prior art simply because they are described in this identification item. As is well known, disasters resulting in casualties and property damage caused by soil runoff in cut slopes and mountainous areas are continuously increasing due to recent torrential rains and localized downpours caused by climate change. Debris flow protection facilities to solve this problem are structures installed to protect human lives and property from debris flows (e.g., a phenomenon in which soil, sand, gravel, wood, etc. are mixed and flow down rapidly) caused by landslides or heavy rainfall, as shown in Fig. 1. The main functions of the above debris flow protection facility are as follows. First, debris flows are blocked and contained; that is, they are prevented from flowing downstream or their speed is reduced to minimize damage. Second, shock absorption; that is, it absorbs the strong impact energy of debris flows to prevent damage to structures. Third, sediment control; that is, protecting the downstream area by preventing the movement of unstable sediment deposited in the valley. Fourth, it stabilizes mountain slopes and prevents collapse, that is, it prevents longitudinal and transverse erosion of streams and prevents the collapse of mountainous terrain. Fifth, driftwood blocking, that is, preventing additional damage by blocking trees that are swept away during floods. The types of debris flow protection facilities mentioned above include impermeable (rigid protection facilities) and permeable (flexible protection facilities), but the permeable type includes steel screen-type/net-type protection facilities. That is, it is a method that uses steel wire rope nets or ring-type shock absorbers to absorb the impact energy of debris flows while allowing some soil to pass through and filtering out large chunks. It has the advantages of excellent shock absorption, ease of installation according to terrain, and convenient maintenance. Technologies that absorb shock through flexible wire rope nets such as CK nets, slip action, and ring-type shock absorbers are applied. The considerations for the design and installation of the above debris flow protection facilities are as follows. First, the design is based on identifying the characteristics of debris flow occurrence, such as frequency, scale, velocity, density, and flow rate. Second, a suitable type is selected by considering topographical and geological characteristics, namely the topography, geology, and slope of the installation location. Third, the optimal solution is sought by considering the surrounding environment and economic feasibility, that is, eco-friendliness, construction and maintenance costs, etc. Fourth, safety, that is, sufficient strength and stability to withstand the impact of debris flows must be ensured. However, the conventional debris flow protection facilities, which are useful as described above, have the following problems. In other words, as the occurrence of debris flows has recently increased due to continuous climate change, there is a demand for the development and installation of more diverse types of debris flow protection facilities; however, as companies insist on outdated methods without investing in facilities, problems have arisen that make it difficult to cope with disasters. In particular, the debris flow disaster prevention facility of the above-mentioned conventional technology has a major problem in that it lacks structural technology to prevent destruction and collapse caused by progressive scouring occurring on the side (ridge side) of the debris flow protection facility. In other words, scouring caused by rainwater occurs on the slope portion in contact with the wall of the ridge side, leading to slope erosion. Consequently, rainwater flowing down the slope ends up flowing into the eroded portion before reaching the ridge side, resulting in a problem where the ridge side fails to function properly. Accordingly,