WO2006025657A1

WO2006025657A1 - Vegetation type non woven fabric, revetment structure and revetment construction method using thereof

Info

Publication number: WO2006025657A1
Application number: PCT/KR2005/002551
Authority: WO
Inventors: Nam-Soo Han
Original assignee: Nam-Soo Han
Priority date: 2004-08-05
Filing date: 2005-08-05
Publication date: 2006-03-09
Also published as: KR100683572B1; KR20060012916A

Abstract

The present invention relates to a vegetative non-woven fabric for preventing soil drain in a river and growing plants, and a revetment structure and a method for revetment construction using the same. The vegetative non- woven fabric comprises a punched non- woven fabric having perforated thereon in such a manner as to be spaced apart from one another at predetermined intervals; a coir roll matt laid on the punched non-woven fabric; and a wire-screen laid on the coir roll matt. The revetment structure comprises a weight of a predetermined size buried at the center of the ground of a river of which the water flow is suspended, and having a screw type steel rod vertically fixed on the upper surface thereof, wherein the upper end part of the steel rod is to be projected above the ground; a vegetative non-woven fabric as described above; a wire rope; and a nut. The method of revetment construction comprises the steps of: installing a large-sized concrete base stone under the ground; fixing a cross-shaped concrete connecting member; fixing small-sized concrete blocks; burying the large-sized concrete base stone, the cross-shaped concrete connecting member and the small-sized concrete blocks in the earth; laying a punched non- woven fabric; laying a coir roll mat; laying a wire-screen; fixing a wire rope; and fastening a nut to the screw type steel rod.

Description

VEGETATION TYPE NON WOVEN FABRIC, REVETMENT STRUCTURE AND REVETMENT CONSTRUCTION METHOD

USING THEREOF

Technical Field

[1] The present invention relates to a vegetative non-woven fabric for preventing soil drain in a river, and a revetment structure and a method for revetment construction using the same.

[2]

Background Art

[3] Conventional revetment structure is constructed by laying a non-woven fabric on the sloping surface of a river or road cut slope and installing cement revetment blocks, as shown in Fig. 1, thereon to prevent soil drain and collapse of the earth surface by flood.

[4] As shown in Fig. 2, the conventional revetment block 1 mainly performs flood control function to protect the ground surface of a river and prevent soil drain by resisting the water pressure or water flow of the river. However, it cannot be applied in a large area where the water pressure is high and the water flow is fast. Also, since plants cannot grow on the revetment block 1, it is impossible to construct a nature- friendly revetment.

[5] In order to solve such problems, the present inventors filed several patent ap¬ plications (ex. Korean Patent Application No. 10-2002-0016023 and Korean Patent Application No. 10-2002-0016024). These inventions advantageously provide a nature-friendly revetment block having both flood control function and vegetation function, whereby it can prevent soil drain and allow growth of trees as well as herbal plants. However, they still have problems in workability and economical view since they require high material cost and excessive construction time by using a bag of vegetative non- woven fabric.

[6]

Disclosure of Invention

Technical Solution

[7] Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a vegetative non-woven fabric capable of growing plants.

[8] Also, it is another object of the present invention to provide a revetment structure and a method for revetment construction using the same.

[9] It is a further object of the present invention to provide a revetment structure and a method for revetment construction capable of preventing ground subsidence of a river and soil drain and improving workability.

[10] It is a still further object of the present invention to provide a means for preventing deformation of the vegetative non-woven fabric.

[11] It is a still further object of the present invention to provide a means for strengthening the fixation of the vegetative non- woven fabric to the ground.

[12] To accomplish the above objects of the present invention, the present invention is directed to a vegetative non- woven fabric comprising: a punched non- woven fabric having perforated thereon in such a manner as to be spaced apart from one another at predetermined intervals; a coir roll mat laid on the punched non-woven fabric; and a wire- screen laid on the coir roll matt.

[13] Also, the present invention is directed to a revetment structure comprising: a weight of a predetermined size buried at the center of the ground of a river of which the water flow is suspended, and having a screw type steel rod vertically fixed on the upper surface thereof, wherein the upper end part of the steel rod is to be projected above the ground; the vegetative non-woven fabric according to the present invention laid on the weight by being fastened to the screw type rod; a wire rope perpendicularly crossing to each other at a predetermined interval on the vegetative non- woven fabric and being fixed to the upper part end of the screw type steel rod; and a nut fastened to the screw type steel rod over the wire rope.

[14] Further, the present invention is directed to a method of revetment construction using a vegetative non- woven fabric comprising the steps of: installing a large-sized concrete base stone under the ground of a river of which the water flow is suspended; fixing a cross-shaped concrete connecting member onto the large-sized concrete base stone; fixing small-sized concrete blocks at the front and rear and left and right branches of the cross-shaped concrete connecting member; burying the large-sized concrete base stone, the cross-shaped concrete connecting member and the small-sized concrete blocks in the earth; laying a punched non- woven fabric on the ground where the large-sized concrete base stone, the cross-shaped concrete connecting member and the small-sized concrete block are buried, by fixing the punched non- woven fabric with a screw type steel rod projected from the ground; laying a coir roll mat on the punched non- woven fabric, for preventing the punched non- woven fabric from being deformed by UV rays; laying a wire-screen on the coir roll mat; fixing a wire rope to the upper end parts of the screw type steel rods to be crossed to each other at a pre¬ determined interval on the wire-screen; and fastening a nut to the screw type steel rod.

[15] Brief Description of the Drawings

[16] Further objects and advantages of the invention can be more fully understood from the following detailed description taken in conjunction with the accompanying drawings in which:

[17] Fig. 1 is a perspective view of a conventional revetment block;

[18] Fig. 2 is a plane view of an embodiment of a conventional revetment block;

[19] Fig. 3 is a view showing the construction process according to a concrete embodiment of the revetment construction method according to the present invention;

[20] Fig. 4 is a view showing a concrete embodiment of the weight according to the present invention;

[21] Fig. 5 is a cross-sectional view of a concrete embodiment of the revetment structure according to the present invention; and

[22] Fig. 6 is a plane view showing the connection between the revetment structures according to the present invention.

[23]

Best Mode for Carrying Out the Invention

[24] Now, a concrete embodiment of the present invention will be explained in detail with reference to the detached drawings.

[25] As shown in Fig. 3, a vegetative non-woven fabric 100 comprises punched non- woven fabric 120 having holes perforated thereon in such a manner as to be spaced apart from one another at predetermined intervals, a coir roll mat 140 laid on the punched non- woven fabric 120 and a wire-screen 160 laid on the coir roll mat 140.

[26] The punched non- woven fabric 120 forms the lower part of the vegetative non- woven fabric 100 provide environment, where plants can grow, along with soil. The punched non- woven fabric 120 is formed of polyester or polypropylene and the holes provide passageways through which the plant roots can spread or mi¬ croorganisms or earthworms migrate while screw type steel rods can be inserted through the holes.

[27] The coir roll mat 140 is disposed on the punched non- woven fabric 120 and prevents the punched non-woven fabric 120 from being deformed by UV rays. Also, the coir roll mat 140 is environmentally friendly and is not corroded for several years. Therefore, it can prevent drain of soil and help plants to stably take roots.

[28] The wire-screen 160 is disposed on the coir roll mat 140 and forms a strong structure along with a weight 200 buried in the earth, when the vegetative non- woven fabric 100 is installed under the ground, to safely fix the coir roll mat 140 and the punched non- woven fabric 120 disposed below and the soil.

[29] The vegetative non- woven fabric 100 may be formed by laying the components in order on the ground, as shown in Fig. 2 or may be previously manufactured as an integrated product with a predetermined size to be cut into a suitable size on the spot for convenient use.

[30] Fig. 4 and Fig. 5 show a concrete embodiment of a revetment structure using the vegetative non- woven fabric 100.

[31] The weight 200 with a predetermined size is buried in the earth of the ground of the river, where the water flow is suspended, and has a screw type steel rod perpen¬ dicularly inserted from the upper surface with its top projected above the ground.

[32] The weight 200, as shown in Fig. 4 and Fig. 5, comprises a large-sized concrete base stone 220 buried in the earth, a screw type steel rod 211 perpendicularly inserted on the large-sized concrete base stone 220 with its top projected above the ground, a cross-shaped concrete connecting member 230 having a through-hole 231 formed therein, through which the screw type steel rod 211 is inserted, connecting steel rods 232 vertically projected at the front and rear and left and right branches of the cross- shaped concrete connecting member 230, small-sized concrete blocks 240 buried in the earth and having vertical connecting holes 241 through which the connecting steel rod 232 to be extended in the front and rear and left and right directions of the cross- shaped concrete connecting member 230 and screw type steel rods 212 perpendicularly inserted on the small-sized concrete block 240 with their upper end parts projected above the earth.

[33] The large-sized concrete base stone 220 is buried at a predetermined interval under the ground of the waterway which has been suspended and has a screw type steel rod 211 inserted on the upper surface.

[34] The cross-shaped concrete connecting member 230 is a kind of a cross-shaped concrete block and has the through-hole 231 vertically formed at the center thereof for inserting the screw type steel rod 211 thereto.

[35] The connecting steel rods 232 are vertically projected at the front and rear and left and right branches of the cross-shaped concrete connecting member 230 and are to be coupled with the small-sized concrete blocks 240.

[36] Therefore, as shown in Fig. 4, the large-sized concrete base stone 220 is extendedly connected to the small-sized concrete blocks 240 in the front and rear and left and right directions with the cross-shaped concrete connecting member 230 mediating therebetween.

[37] The large-sized concrete base stone 220, the cross-shaped concrete connecting member 230 and the small-sized concrete block 240, which are combined as described above, are buried in the earth and stand against strong flow.

[38] Also, the small-sized concrete blocks 240 extended from the large-sized concrete base stone 220 in the front and rear and left and right directions, mediated by the cross- shaped concrete connecting member 230, are connected to each other to prevent subsidence of the ground and act as a subsidiary means to bind the punched non-woven fabric 120, the coir roll mat 140 and the wire-screen 160 which are buried at the upper part in the earth.

[39] In addition, the small-sized concrete block 240 has horizontal connecting holes 242 formed at both lateral faces so that the adjacent small-sized concrete blocks 240 can be connected by horizontal connecting rods 243.

[40] The weight 200, though not shown in the drawings, may be formed in a simple structure such as a square wire cylinder.

[41] The combined large-sized concrete base stone 220, cross-shaped concrete connecting member 230 and small-sized concrete block 240 are buried in the earth and covered by soil. Then, the vegetative non- woven fabric 100 is laid thereon while the projected screw type steel rods 211, 212 are fixed in the meshes.

[42] In other words, the punched non-woven fabric 120, the coir roll mat 140 and the wire-screen 160 are sequentially laid on the reclaimed ground. Here, the holes formed in the punched non- woven fabric 120 act as passageways through which the screw type steel rods 211, 212 pass.

[43] The wire rope 300 is crossed perpendicular to each other at a predetermined interval on the vegetative non- woven fabric 100 and is fastened at the upper end parts of the screw type steel rods 211, 212.

[44] Compression washers 410, as shown in Fig. 5, are fastened with the screw type steel rods 211, 212 to compress the wire rope 300 and to strengthen the coupling between the vegetative non- woven fabric 100 and the weight 200.

[45] Referring to Fig. 5 or Fig. 6, nuts 400 are fastened with the screw type steel rods

211, 212 to fix the coupling of the vegetative non- woven fabric 100 and the weight 200.

[46] Fig. 6 shows a plane view of a revetment structure with connection of all the above- described components completed.

[47] Fig. 3 shows the sequential process to construct a concrete embodiment of the revetment construction method using the vegetative non- woven fabric 100. The process comprises the following steps of:

[48] D) installing a large-sized concrete base stone 220 under the ground of a river of which the water flow is suspended, in which the large-sized concrete base stone 220 is installed at a predetermined interval under the ground of the river, where the water flow is suspended;

[49] D) fixing a cross-shaped concrete connecting member 230 onto the large-sized concrete base stone 220, in which a screw type steel rod 211 formed on the large-sized concrete base stone 220 is inserted into a through-hole 231 of the cross-shaped concrete connecting member 230 for fixation;

[50] D) fixing small-sized concrete blocks 240 at the front and rear and left and right branches of the cross-shaped concrete connecting member 230, in which connection steel rods 232 vertically projected from front and rear and left and right branches of the cross-shaped concrete connecting member 230 are each inserted in a vertical connecting hole 241 of the small-sized concrete block 240, whereby the adjacent large- sized concrete base stones 220 are interconnected via the cross-shaped concrete connecting member 230 and the small-sized concrete block 240;

[51] D) burying the large-sized concrete base stone 220, the cross-shaped concrete connecting member 230 and the small-sized concrete blocks 240 in the earth, in which the large-sized concrete base stone 220, the cross-shaped concrete connecting member 230 and the small-sized concrete block 240 have been previously bonded to each other;

[52] D) laying a punched non- woven fabric 120 on the ground where the large-sized concrete base stone 220, the cross-shaped concrete connecting member 230 and the small-sized concrete block 240 are buried, by fixing the punched non- woven fabric 120 with screw type steel rods 210 projected from the ground, in which solid is laid on the ground where the large-sized concrete base stone 220, the cross-shaped concrete connecting member 230 and the small-sized concrete block 240 are buried and the punched non- woven fabric 120 is laid thereon by fixing the punched non- woven fabric to the projected screw type steel rods 211, 212;

[53] D) laying a coir roll mat 140 on the punched non-woven fabric 120, for preventing the punched non- woven fabric 120 from being deformed by UV rays;

[54] D) laying a wire-screen 160 on the coir roll mat 140;

[55] D) fixing a wire rope 300 to the upper end parts of the screw type steel rods 210 to be crossed to each other at a predetermined interval on the wire-screen 160; and

[56] D) fastening a nut 400 to the screw type steel rod 210.

[57] A compression washer 410 to compress the fixed wire rope 300 onto the ground may be placed around the first screw type steel rod 211 or the second screw type steel rod 212 before the nut 400 is fastened. As a result, the fixation of the punched non- woven fabric 120, the coir roll mat 140 and the wire-screen 160 laid on the large-sized concrete base stone 220, the cross-shaped concrete connecting member 230 and the small-sized concrete block 240 which are buried under the ground can be strengthened to prevent subsidence of the ground by water flow and soil drain.

[58]

Industrial Applicability

[59] The technical effects of the above-described construction according to the present invention are as follows. [60] (1) The present invention provides a vegetative non-woven fabric capable of growing plants.

[61] The vegetative non- woven fabric 100, as shown in Fig. 3, comprises a punched non- woven fabric 120 having holes perforated thereon in such a manner as to be spaced apart from one another at predetermined intervals; a coir roll matt 140 laid on the punched non- woven fabric 120; and a wire- screen 160 laid on the coir roll matt 140. It may be formed by laying the components in order on the ground, as shown in Fig. 2 or may be previously manufactured as an integrated product with a pre¬ determined size to be cut into a suitable size on the spot for convenient use.

[62] (2) The present invention provides a revetment structure and a method for revetment construction using the vegetative non- woven fabric according to the present invention.

[63] In other words, the present invention provides a vegetative revetment structure and a method for revetment construction by binding the vegetative non- woven fabric 100 to the weight 200 buried in the earth. That is, the punched non- woven fabric 120 of the vegetative non- woven fabric 100 provides an environment where plants can propagate along with soil along with soil and the holes formed in the punched non- woven fabric 120 provide passageways through which the plant roots can spread or microorganisms or earthworms migrate.

[64] (3) According to the present invention, it is possible to prevent ground subsidence of a river and soil drain and to improve workability.

[65] By coupling the vegetative non-woven fabric 100 to the large-sized concrete base stone 220, the cross-shaped concrete connecting member 230 and the small-sized concrete block 240 which are buried, it is possible to prevent ground subsidence of a river and soil drain by water flow. Also, since the construction process is simple, it is possible to complete the process in a shortened time at a low cost, providing economical benefits.

[66] (4) According to the present invention, it is possible to prevent deformation of the vegetative non- woven fabric.

[67] Deformation of the punched non- woven fabric 120 by UV rays can be prevented by applying the coir roll mat 140 on the punched non- woven fabric 120. Also, the coir roll mat 140 is environmentally friendly and does not corroded for several years, whereby it can further prevent drain of soil and help plants to stably take roots.

[68] (5) It is possible to strengthen the fixation of the vegetative non-woven fabric to the ground.

[69] A compression washer 410 to compress the fixed wire rope 300 onto the ground surface is placed around the screw type steel rods 211, 212 and a nut is fastened. As a result, the binding of the large-sized concrete base stone 220, the cross-shaped concrete connecting member 230 and the small-sized concrete block 240 which are buried in the earth and the punched non-woven fabric 120, the coir roll mat 140 and the wire-screen 160 laid on the ground is strengthened and ground subsidence and soil drain by water flow can be prevented.

[70] While the present invention has been described with reference to the particular il¬ lustrative embodiments, it is not to be restricted by the embodiments but only by the appended claims. It is to be appreciated that those skilled in the art can change or modify the embodiments without departing from the scope and spirit of the present invention.

Claims

[1] A vegetative non-woven fabric comprising: a punched non-woven fabric having holes perforated thereon in such a manner as to be spaced apart from one another at predetermined intervals; a coir roll matt laid on the punched non- woven fabric; and a wire-screen laid on the coir roll matt.

[2] A revetment structure comprising: a weight of a predetermined size buried at the center of the ground of a river of which the water flow is suspended, and having a screw type steel rod vertically fixed on the upper surface thereof, wherein the upper end part of the steel rod is to be projected above the ground; a vegetative non- woven fabric as defined in claim 1, laid on the weight by being fastened to the screw type rod; a wire rope perpendicularly crossing to each other at a predetermined interval on the vegetative non- woven fabric and being fixed to the upper end part of the screw type steel rod; and a nut fastened to the screw type steel rod over the wire rope.

[3] The revetment structure according to claim 2, wherein further comprises a compression washer placed under the nut to compress the wire rope.

[4] The revetment structure according to claim 2 or 3, wherein the weight comprises: a large-sized concrete base stone buried in the earth; a screw type steel rod vertically fixed on the large-sized concrete base stone, wherein the upper end part of the steel rod is projected above the ground; a cross-shaped concrete connecting member having a through-hole formed therein, through which the screw type steel rod is inserted; connecting steel rods vertically projected from the tops of the front and rear and left and right branches of the cross-shaped concrete connecting member; a small-sized concrete block having a vertical connecting hole formed therein, into which the connecting steel rod is inserted, to extend the cross-shaped concrete connecting member in the front and rear and left and right directions; and screw type steel rods vertically fixed on the small-sized concrete block, wherein the upper end parts of the steel rods are projected above the ground.

[5] The revetment structure according to claim 2 or 3, in which the weight is a square wire cylinder.

[6] The revetment structure according to claim 4, in which the small-sized concrete block has horizontal connecting holes formed at both lateral faces so that adjacent small-sized concrete blocks can be connected by horizontal connecting rods.

[7] A method of revetment construction using a vegetative non-woven fabric comprising the steps of: installing a large-sized concrete base stone under the ground of a river of which the water flow is suspended; fixing a cross-shaped concrete connecting member onto the large-sized concrete base stone; fixing small-sized concrete blocks at the front and rear and left and right branches of the cross-shaped concrete connecting member; burying the large-sized concrete base stone, the cross-shaped concrete connecting member and the small-sized concrete blocks in the earth; laying a punched non- woven fabric on the ground where the large-sized concrete base stone, the cross-shaped concrete connecting member and the small-sized concrete block are buried, by fixing the punched non- woven fabric with a screw type steel rod projected from the ground; laying a coir roll mat on the punched non- woven fabric, for preventing the punched non- woven fabric from being deformed by UV rays; laying a wire- screen on the coir roll mat; fixing a wire rope to the upper end parts of the screw type steel rods to be crossed to each other at a predetermined interval on the wire-screen; and fastening a nut to the screw type steel rod.