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KR-102963321-B1 - Eco-friendly erosion prevention system for vulnerable ground debris flow protection facilities

KR102963321B1KR 102963321 B1KR102963321 B1KR 102963321B1KR-102963321-B1

Abstract

The present invention relates to an eco-friendly scour prevention system for debris flow protection facilities on vulnerable ground. The present invention relates to an eco-friendly scour prevention system (100) for a debris flow protection facility on vulnerable ground, comprising: a flexible net (101) that is fixedly installed across a valley of vulnerable ground by means of a plurality of foundation permanent steel wire anchors (160) and is capable of preventing human and property damage caused by soil runoff in cut slopes and mountainous areas; a damping device (150) installed between the foundation permanent steel wire anchors (160) and the flexible net (101) and absorbing and dispersing the force or energy of a sudden debris flow to maintain stability when exposed to it; and a scour prevention part (110) installed on each side of the debris flow protection facility at both ends of the flexible net (101) and preventing destruction and collapse caused by progressive scour occurring on the side of the debris flow protection facility. The present invention, configured as described above, prevents destruction and collapse caused by progressive scouring occurring on the side of a debris flow protection facility, and prevents major disasters caused by damage, loss, or landslides on the side of the debris flow protection facility. It effectively prevents progressive scouring occurring on the side of the debris flow protection facility, thereby ensuring structural safety by preventing the collapse of the debris flow protection facility structure, and stabilizing the river valley and preventing scouring in advance by preventing riverbed changes and reducing damage during floods, which can significantly reduce maintenance costs.

Inventors

  • 심민경

Assignees

  • 주식회사 동아특수건설
  • (주)수피아테크

Dates

Publication Date
20260511
Application Date
20250916

Claims (6)

  1. This relates to an eco-friendly scour prevention system (100) for a debris flow protection facility on vulnerable ground, A flexible net (101) that is fixedly installed across a valley of vulnerable ground by means of a plurality of foundation permanent steel cable anchors (160) to prevent human and property damage caused by soil runoff in cut slopes and mountainous areas; a plurality of damping devices (150) installed between the foundation permanent steel cable anchors (160) and the flexible net (101) to maintain stability by absorbing and dispersing the force or energy of a sudden debris flow when exposed to it; and a scour prevention section (110) installed on each side of the debris flow protection facility at both ends of the flexible net (101) to prevent destruction and collapse caused by progressive scour occurring on the side of the debris flow protection facility; are included, An eco-friendly scour prevention system for a vulnerable ground debris flow protection facility, characterized in that among the damping devices (150) installed at each end of the valley, the wire (156a) and ring (155a) of one damping device (150) are connected to a foundation permanent steel wire anchor (160) on the opposite side across the valley, and the wire (156b) and ring (155b) of the other damping device (150) are connected to a foundation permanent steel wire anchor (160) on the opposite side across the valley, and the foundation permanent steel wire anchor (160) to which the wire (156a) and ring (155a) are connected, and the foundation permanent steel wire anchor (160) to which the wire (156b) and ring (155b) are connected are integrally connected with a flexible net (101).
  2. In claim 1, The above-mentioned scour prevention part (110) is, An anti-scouring vegetation mat (111) that is made of non-woven fabric or coconut fiber mat itself, or may contain soil and gravel inside, and is installed in close contact with the ground of a vulnerable ground to prevent the soil on the surface from being washed away by rainwater or wind; A wire mesh (120) installed over the upper part of the anti-scouring vegetation mat (111) to secure ground stability, increase the durability of the structure, and ensure safety; and An eco-friendly scour prevention system for a debris flow protection facility on vulnerable ground, characterized by including a vegetation reinforcement mat fixing anchor screw bolt (130) that is driven into the ground at regular intervals across a wire mesh (120) and a scour prevention vegetation mat (111), and is firmly driven into the ground while securing support so that the scour prevention vegetation mat (111) can stably withstand external loads such as earthquakes or strong winds.
  3. In claim 1, The above damping device (150) is, A pair of wires (156a)(156b) each assembled and installed on two compression members (151a)(151b); A ring (155a)(155b) is installed at each end of a wire (156a)(156b), with one end connected to a ring of a flexible net (101) and the other end connected to a foundation permanent steel wire anchor (160); Finishing fixtures (158a) (158b) each fixedly installed at the other end of the wire (156a) (156b); Shrink tubes (157a) (157b) respectively installed on the outer surface of the wires (156a) (156b); and An eco-friendly scour prevention system for a vulnerable ground debris flow protection facility, characterized by including an elastic member (159) assembled and installed between two compression members (151a) (151b).
  4. In claim 3, The above two compression members (151a)(151b) are, H-shaped member (152) located on the outside and having openings (152a) formed on each side; A C-shaped member (153) located on the inside and having an opening (153a) formed on one side; and An eco-friendly scour prevention system for a debris flow protection facility on vulnerable ground, characterized by including a fastener (154) that mutually fixes an H-shaped member (152) and a C-shaped member (153).
  5. In claim 4, An eco-friendly scour prevention system for a debris flow protection facility on vulnerable ground, characterized in that an H-shaped member (152) with an opening (152a) formed on each side and a C-shaped member (153) with an opening (153a) formed on one side are arranged so that two wires (156a) (156b) can pass through each side when combined.
  6. In claim 2, An eco-friendly scour prevention system for a debris flow protection facility on vulnerable ground, characterized in that the scour prevention vegetation mat (111) further includes a groove (112) in which the side of a flexible net (101) is stably fitted to prevent detachment.

Description

Eco-friendly erosion prevention system for vulnerable ground debris flow protection facilities The embodiment of the present invention relates to an eco-friendly scour prevention system for debris flow protection facilities on vulnerable ground, and more specifically, to prevent destruction and collapse caused by progressive scour occurring on the side of a debris flow protection facility, and to prevent major disasters caused by damage, loss, or landslides on the side of the debris flow protection facility, and to effectively prevent progressive scour occurring on the side of the debris flow protection facility, thereby ensuring structural safety by preventing the collapse of the debris flow protection facility structure, and to prevent changes in the riverbed and reduction of damage during floods, thereby stabilizing the river valley and preventing scour in advance, which can significantly reduce maintenance costs. 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 (drift debris) in cut slopes and mountainous areas are continuously increasing due to recent torrential rains and localized downpours caused by climate change. A debris flow protection facility to solve this problem is a structure installed to protect human lives and property by mitigating the flow velocity of debris (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 flow blocking and containment—that is, preventing the debris flow from flowing downstream or reducing its speed—minimizes damage. Second, shock absorption; that is, it absorbs the strong impact energy of debris flows to prevent damage to structures. Third, it controls sediment (drift debris), that is, protects 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 erod