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Method for soil erosion control works or shore protection works and structure for soil protection or shore protection

a technology for shore protection and soil erosion control, applied in the direction of human health protection, excavation, foundation engineering, etc., can solve the problems of sand, eroded torrent bed, and large amount of earth on the torrent bed

Inactive Publication Date: 2003-01-16
FUKUI TOMIO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially, in case of a flood, a rapid and powerful avalanche of sand and stones is generated, and it greatly erodes the torrent bed.
This causes the shore to collapse and hence causes a large amount of earth, sand, and the like to be deposited on the torrent bed.
This further increases the risk of the generation of an avalanche of sand and stones.
This is a problem since it requires a huge number of works and huge costs.

Method used

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  • Method for soil erosion control works or shore protection works and structure for soil protection or shore protection
  • Method for soil erosion control works or shore protection works and structure for soil protection or shore protection
  • Method for soil erosion control works or shore protection works and structure for soil protection or shore protection

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Experimental program
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first embodiment

[0026] In FIGS. 1 and 2 the present invention, i.e., a construction method and structure for erosion and torrent control works, is explained.

[0027] FIG. 1 is a schematic view of the structure of the first embodiment, showing the construction method and structure for erosion and torrent control works. FIG. 1 shows a plurality of longitudinal cables 1, two lodgments (trees in this embodiment) 2, two members 3 to be moored, an auxiliary cable 4, and two lateral cables 5.

[0028] The longitudinal cables 1 are connected to the auxiliary cable 4, which is secured to the lodgments 2 located at the opposing riverbanks or shores. Thus the longitudinal cables 1 are fixed to the lodgments 2 through the auxiliary cable 4. Each member 3 to be moored is a net, which is the characteristic part of the present invention, and which is connected, for covering the torrent bed, to the longitudinal cables 1 (three cables in the embodiment) and one lateral cable 5.

[0029] In the present invention the materia...

third embodiment

[0048] FIG. 3 is a schematic view for showing the method and structure of the invention for shore protection works. In FIG. 3, nets 3, as members to be moored, are connected at their top sides to stable lodgments 7 that are provided at the shore of the torrent (or outside the embankment) so that the nets 3 hang on the surface of the torrent and are also connected at their lower sides to other lodgments 7' that are located in the torrent bed so that the nets are fixed on the surface. The lodgments 7' may be weights, for example, rocks, as long as they can act as the lodgments.

[0049] In this third embodiment the structure aims to protect the shore. Thus the moored members 3 are arranged along the shore. In other words, the longitudinal direction of the nets 3 is parallel to the flow of the torrent.

[0050] Since the shore has various shapes, the shapes of the nets may be such ones that conform to the shapes of the shore. The nets are preferably long ones arranged along the torrent if th...

fifth embodiment

[0057] FIG. 5 is schematic view showing the method and structure of the present invention for erosion and torrent control works and shore protection works. The structure in FIG. 5 has both the structure shown in FIG. 1 and the structure shown in FIG. 3.

[0058] In FIG. 5 two members 3, to be moored that act for protecting the torrent bed are connected to longitudinal cables 1 and a mooring cable 8, while two other members 3, to be moored, that act for protecting the shore are connected to lodgments 7 at their top sides and at their lower sides to one of the longitudinal cables 1 or fixing lodgments 7' (weights that can act as lodgments, for example, rocks) located in the torrent bed.

[0059] Thus, according to the method of this embodiment, by using the longitudinal cables 1 for mooring not only the members 3 for the torrent bed, but also the members 3 for the shore, the torrent bed and shore are more stably protected.

[0060] FIG. 6 is a schematic view of the sixth embodiment of the meth...

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Abstract

A method of construction works for preventing the bed and shore of a torrent from being eroded by using steel cables and steel nets without requiring a huge number of works or huge costs, comprising the steps of fixing at least two longitudinal cables (1) directly or indirectly to lodgments (2), connecting the longitudinal cables by at least two lateral cables (5) at proper intervals, and disposing at least two nets (3), the number of which corresponds to the number of lateral cables, so that the nets are arranged at proper intervals in the direction from upstream to downstream of the torrent and mooring the nets by the longitudinal cables and the lateral cables or mooring cables that are connected to the longitudinal cables so that the nets face the water flow of the torrent.

Description

[0001] This invention relates to a method and a structure for easily and effectively performing erosion and torrent control and shore protection works for a torrent located between mountains, a river, and the like, without damaging the natural environment.DESCRIPTION OF THE PRIOR ART[0002] The bed of a torrent, stream, or river (hereinafter called a "torrent bed") is always eroded by sand and stones that are carried down by the stream. Especially, in case of a flood, a rapid and powerful avalanche of sand and stones is generated, and it greatly erodes the torrent bed. If no control strategy is taken for such erosions, the base of the shore of a torrent, a riverbank, or an embankment (hereinafter just called a "shore") is deeply excised, as well as the torrent bed being excised. This causes the shore to collapse and hence causes a large amount of earth, sand, and the like to be deposited on the torrent bed. This further increases the risk of the generation of an avalanche of sand and...

Claims

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Application Information

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IPC IPC(8): E02B3/04E02B3/12E02B7/02
CPCE02B3/04E02B3/124Y02A10/30Y02A50/00E02B3/12E02D17/202
Inventor FUKUI
Owner FUKUI TOMIO
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