KR20010025308A - Green Slope Fabric Form Reinforcement - Google Patents

Abstract

PURPOSE: A green slope-reinforcing method using a fabric form and a nailing is provided to prevent the slide or erosion of a slope, to improve external appearance, and to be planted with natural turf or vegetation. CONSTITUTION: A slope reinforcing-method comprises nine steps. A fabric form consists of a column part(3) and a filter part. In the first step, the fabric form is placed on a slope, and mortar is poured into the fabric form to form the column part. In the second step, the filter part is cut out after the mortar is cured. In the third step, a hole is punched at a right angle to the slope through the cut-open filter-part, and then a nail(4) is installed. In the fourth step, the inside of the hole is grouted with cement mortar(5). In the fifth step, the nail is fixed on the column part through a supporting member(6). In the sixth step, a washer(7) is inserted in a bolt(8) connected with the nail, and screwed by a nut(9). In the seventh step, concrete(12) is poured into the space between the supporting member and the end of the bolt to prevent from being exposed to external air. A plastic cap covers the space. In the eighth step, soil is poured into the filter part to form an earthy-material layer. In the last step, trurfs are planted on the earthy-material layer. Also, natural turf, vegetation, flowering plants or trees are planted, or a landscape slope is formed by a seed-spray method.

Description

Green Slope Fabric Form Reinforcement using Fiber Band and Nailing

Field of invention

The present invention is an environmentally friendly slope reinforcement method using a geosynthetic band and nailing to reinforce steep slopes of various roads, complexes, embankments, railways, tunnels, etc. and to prevent erosion (Green Slope Fabric Form Reinforcement: Green Slope or FFR method) ). More specifically, the present invention reinforces and greens various cuts and fill slopes of various roads or railways, complexes, dams or lakes, reservoirs, cuts and fill slopes of rivers, cut slopes of tunnel entrances and exits, other steep slopes and urban neighborhood slopes. The present invention relates to an environmentally friendly slope reinforcement method using a geotextile band and nailing.

Background of the Invention

In general, there are cut slopes or fill slopes in areas where various roads or railways, embankments, dams or lakes, reservoirs, tunnel entrances and exits, and other apartment complexes near the city exist. An environmentally friendly slope reinforcement method has been required to prevent erosion and erosion and harmonize with the natural environment.

The Soil Nailing method, which has been used for a long time, is a method in which shotcrete is applied to the front surface of a slope, and the aesthetic appearance is very poor and water treatment on the rear surface is difficult. In addition, the risk of safety accidents existed due to corrosion of the wire mesh and formation of a very poor construction surface due to cracking of the shotcrete surface. The prior art is not an environment-friendly construction method for the erosion of the slope. In other words, since plants such as grass, flowers, and trees are difficult to vegetate in the construction surface, they are not good in aesthetic sense, and include defects contrary to the preservation of natural ecosystems.

Reinforced concrete retaining wall has been widely used as another method for reinforcing slopes.As a result of the huge cost and time required for the molding and curing of reinforced concrete structures, there is a disadvantage that huge construction costs are required for the excavation and fill work. The technique of constructing the retaining wall by embedding the soil in the anchor bolt area while constructing the structural structure is being implemented. However, this reinforcement method also has a disadvantage in that a large amount of cost is consumed in gulting and filling work, and the structure is large as a whole.

Therefore, the present inventors improve the problems of the prior art by using a solid concrete columnar fiber and nailing method to prevent soil sediment activity on the slope and to suppress surface erosion, and at the same time beautiful appearance and natural ecological grass, The new slope reinforcement method has been developed to construct slopes with vegetation- able vegetation.

An object of the present invention is to provide a slope reinforcement method having a rigid structure that can prevent the slope activity or erosion due to natural disasters.

Another object of the present invention is to provide a slope reinforcement method having a rigid structure capable of integration with excellent adhesion to cut and fill slopes.

Still another object of the present invention is to provide a slope reinforcement method having a beautiful appearance and a structure in which natural ecological grasses and vegetation can grow.

Still another object of the present invention is to provide a slope reinforcement method that can be applied to all soils applied to existing soil nailing.

Still another object of the present invention is to provide a slope reinforcing method which is easy to drainage and is free of reinforcing corrosion and surface cracks.

Still another object of the present invention is to construct a concrete construction material directly by using a fiber band made of high-strength geosynthetic fiber, so that it is not necessary to manufacture or transport concrete construction materials separately, so that the method can reinforce the slope at an economical cost in a short time It is to provide.

Still another object of the present invention is to provide a method for constructing a slope easily and efficiently by directly injecting a solid concrete or mortar in a fluid state into a fiber band made of high-strength civil fiber.

The above and other objects of the present invention can be achieved by the present invention described below. Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

1 is a cross-sectional view schematically showing a cut slope constructed by an environmentally friendly slope reinforcement method using a fiber band and nailing according to the present invention.

2 is a plan view schematically showing a part of a state in which a nail is installed on a fiber band according to the present invention.

FIG. 3 is an enlarged plan view showing part "A" of FIG. 2 in detail.

FIG. 4 is a cross-sectional view taken along line BB ′ of FIG. 3 to illustrate the state in which concrete is filled in the space between the pillars and the bolt.

FIG. 5 shows in detail another embodiment of the present invention in which the plastic cap 15 is placed on the bolt instead of filling the space between the pillar and the bolt.

Explanation of the main symbols in the drawings

1: fiber zone 2: filter section

3: pillar portion 4: nail

5: morter 6: support

7: washer 8: bolt

9: nut 11: soil layer

12: concrete 13: hole

14: slope 15: plastic cap

Environmentally friendly slope reinforcement method using the fiber band and nailing of the present invention to reinforce steep slopes of various roads and other construction sites and to prevent erosion in the natural environment using a zigzag-shaped fiber band and the existing nailing method In the method, when the concrete or mortar is injected, the slope 14 to construct the fiber zone 1 composed of the pillar part 3 in which the concrete pillar is formed and the filter part 2 in which the concrete or mortar is not injected. Injecting mortar into the fiber zone 1 from the outside so as to be located at the center and to form the pillar portion 3; When the mortar is sufficiently cured, the filter part 2 is cut off; A nail (4) is installed after the hole (13) is drilled in the direction perpendicular to the slope (14) through the cut filter portion (2); Grouting the hole (13) with a cement mortar (5); Fixing the nail (4) onto the column (3) via a support (6); Inserting a washer (7) in the bolt (8) connected to the nail (4) and then tightening with a nut (9); Filling the space 12 or covering the cap 15 made of plastic so that the space between the support 6 and the bolt 8 provided between the pillars 3 is not exposed; The filter part 2, in which the nail 4 is not installed, is cut and then soil is formed to form the soil layer 11; And the soil layer 11 is installed in the lawn carpet (lawn carpet) planted with seeds, planting natural grass, vegetation, flowers or trees, or spraying their seeds on the natural earth (seed spray) construction method It characterized by consisting of a step of forming the landscape slope (14).

According to the environment-friendly slope construction method of the present invention, the surface 14 is provided with a zigzag-shaped fiber band 1, the nail 4 is different in position and the number of nails according to the slope of the slope or the type of soil To install, the nail (4) is characterized in that it is formed in a rebar type, bolt type or anchor type.

Construction using this method is possible to form a wide range of concrete or mortar mats in a short time by laying out fabrics made according to the site shape in advance and injecting concrete or mortar with a high-pressure pump, compared to the conventional shotcrete method. Quickness, stability, construction efficiency and economy are excellent and there is a remarkable work effect. In addition, the slope reinforcement method using the fiber band and nailing has the advantage of excellent rigidity and little soil erosion phenomenon because it is constructed in a large area integrally than other methods.

Fabric form is a formwork made of high-strength geosynthetic fiber that can be used to inject concrete, mortar, etc., in a fluid state, to form concrete or concrete mats suitable for direct use on site.

The construction method according to the present invention does not need to be manufactured and transported separately by directly installing on-site as well as on land, and it is a suitable construction method for home construction of irregular type. The present inventors have already received a patent for such fiber bands and various construction methods using the same (Patent registration No. 119332) or are in a pending state (Patent applications 98-34388, 98-34020, and 98-34021). No. 98-42515).

Fibrous bands have been used in the early days, but the thickness (minimum thickness of 7 cm) was insufficient, causing cracks and scouring of the earth and sand through the rods and the waist of the serviceman. In addition, the parts other than rods do not adhere to the soil and have a small ground area (28%), which is unstable to the activity. Therefore, the zigzag improved fiber band was developed by improving this, and as a result, the safety factor of the activity was greatly increased (68% of the grounding rate), and the waist thickness was increased by 2-3cm, and the firmness was increased. It has been welcomed by improved and improved methods in many ways, including the prevention of erosion.

Recently, the applicant has developed an environmental type (grass type, fish and shellfish type), sand form, scour repair, scour prevention, fiber protection hole, coastal protection fiber hole, and wastewater filtration hole. The cut slope reinforcing fiber band (Green Slope) of the invention has been developed. The method of the present invention is expected to be widely used for various slope activities or erosion prevention and reinforcement in the future, and is an economical and technically advanced method.

Hereinafter, with reference to the accompanying drawings will be described in detail the contents of the present invention. 1 is a cross-sectional view schematically showing a cut slope constructed by an environmentally friendly slope reinforcement method using a fiber band and a nailing method according to the present invention. As shown in FIG. 1, the fiber band 1 of the present invention is installed on a slope 14 adjacent to a roadside, and after the hole 13 is drilled through the cut filter part 2, between the pillar parts 3. By fixing the nail 4, a solid slope can be constructed. In addition, the soil layer 11 is formed in the filter part 2 in which the nail 4 is not installed, and a lawn carpet in which grass seeds are planted is installed on the soil layer 11, or natural grass, vegetation, flowers Or environmentally friendly landscape slopes are formed by planting trees or seed spraying them.

2 is a plan view schematically showing a part of a state in which a nail is installed in a fiber band according to the present invention. In the construction method according to the present invention to produce a fiber band 1 according to the site conditions and shape is laid on the slope (14). Then, the injection raw material is injected into the fiber band 1 through an injection hole (not shown) by using a high pressure pump or the like. The injection raw material is used to select the appropriate according to the conditions of the site, it is generally selected from concrete or mortar. Fibrous zone 1 is formed with a pillar portion (3) in which concrete pillars are formed when the mortar is injected and a filter portion (2) in which the mortar is not injected. The filter portion (2) is considerably wider than the pillar portion (3). It is formed in width. This is because the filter unit 2 is cut and soil is inserted between them to form an environment-friendly slope. Usually, it is preferable that the width | variety of the filter part 2 maintains the numerical value about 2 to 5 times larger than the width | variety of the pillar part 3. However, these figures may vary according to the structure or size of the slope to be constructed, and may be appropriately designed according to the use, the terrain, and the conditions of the slope. After curing the concrete or mortar filled in the pillar portion 3 of the fiber band 1, the filter portion 2 is cut. The cut filter part 2 is a part for forming the soil layer 11 to fill the soil and planting the nail 4 at regular intervals by punching the hole 13 in the slope 13. Separated by. FIG. 2 illustrates an example in which the nails 4 are installed in the fourth filter unit 2 in the horizontal and vertical directions, respectively. However, the positions and the number of the nails 4 are changed according to the slope or the ground state of the slope 14. It can be adjusted and installed properly.

Fig. 3 is an enlarged plan view of the portion “A” of Fig. 2 showing a state in which the nail 4 is installed in the filter portion 2 between the pillar portions 3 of the fiber zone according to the present invention. After grouting and inserting the nail 4 into the hole 13, the end of the nail 4 is connected to the bolt 8, and the nut (3) is supported on the pillar 3 through the support 6 and the washer 7; 9) is fastened. The support base 6 is formed of a reinforcing bar, and as shown in Fig. 4, the extension portion obliquely extending in the horizontal and vertical directions is configured to span the four pillars 3.

4 is a cross-sectional view taken along line B-B 'of FIG. The pillar portion 3 is filled with a mortar to form a column having a cylindrical or oval cross section, and the cut filter portion 2 is filled with soil to form a soil layer 11. A hole 13 is drilled between the pillar portions 3 and 3 to insert the nail 4 and grouted with a mortar 5. The nail 4 is fixed on the pillar part 3 through the support 6, and then the washer 7 is inserted into the bolt 8 connected to the nail 4, and then firmly fastened with a nut 9. The space 12 of the support 6 and the bolt 8 installed between the pillars 3 is filled with concrete 12 or covers the plastic cap 15. The reason for this is to prevent the phenomenon of rust or corrosion by exposing the support 6, the bolt 8, the nut 9 and the washer 7. The washer 7 may be made of iron plate or other material. The nail 4 may be made of a rebar or iron nail or tightly bolted or anchored nail for tight coupling with the mortar 5.

FIG. 5 shows in detail another embodiment of the present invention in which the plastic cap 15 is placed on the bolt instead of filling the space between the pillar and the bolt. The plastic cap 15 is preferably manufactured to be inclined so that water can flow down to the soil layer 11, and to form a groove in the inner central portion thereof so as to be firmly fitted to the bolt (8). The plastic cap 15 according to the present invention may be any structure as long as water does not enter the space between the pillars on which the nail 4 is installed.

Method for constructing the slope using the environmentally friendly fiber band of the present invention is as follows.

First of all, when concrete or mortar is injected into the slope 14 to be constructed, a zigzag-type fiber band fabric comprising a pillar part 3 in which concrete pillars are formed and a filter part 2 in which concrete or mortar is not injected. Install it. The end of the fiber band, which is usually located at the bottom of the slope 14, is completely sealed so that the mortar can be fixed inside the bag formwork. Since the fiber band 1 is contracted when the mortar is injected into the inner space thereof, the fiber band 1 is laid by giving a wrinkle of about 1.1 to 1.2 times to the length of the construction surface. The upper end of the fiber stand (1) is piled at appropriate intervals and fixed by the wire (wire) or by hanging in a fiber band fabric. A hose is connected to the injection port of the fiber band 1 to pressurize the mortar by the concrete pump to form the pillar part 3. Since cement water flows from the unfinished mortar onto the fiber-to-fabric surface and stains are formed on the surface, the surface is washed with water before curing. When the mortar is sufficiently cured, the filter part 2 is cut and the hole 13 is drilled in the direction substantially perpendicular to the slope 14 through the cut filter part 2. A nail 4 is installed in the hole 13 and grouted inside with a cement mortar 5.

After the grouting is completed, the nail 4 is fixed on the column 3 through the support 6. Insert the washer (7) to the bolt (8) connected to the nail (4) and then tighten the bolt (8) firmly with a nut (9). When the installation of the nail 4 is completed, the spaces of the support 6, the washer 7, the nut 9, and the bolt 8 provided between the pillars 3 are not rusted or corroded. Fill the concrete 12 or cover the plastic cap (15).

In the filter unit 2, which is not provided with the nail 4, soil, which is good for growing plants, such as mountain soil, is introduced to form the soil layer 11. And the soil layer 11 by installing a lawn carpet (lawn carpet) planted with grass seeds, planting natural grass, vegetation, flowers or trees, or by spraying their seeds on the ground soil (seed spray) construction method Form a drinking water layer. By maintaining this drinking water layer it is possible to maintain the natural environment. The construction method of the present invention has the advantage of generating an environment-friendly slope while maintaining the advantages of the zigzag fiber band.

The present invention has a solid structure that can be integrated with excellent adhesion to cut and fill slopes, and can maintain the sufficient strength to prevent erosion and activity, can be applied to all soils applied to existing soil nailing It is economical in a short time because it is easy to drainage, there are no reinforcing corrosion and surface cracks, and there is no need to make or transport concrete material separately by constructing it on site using fiber band made of high strength civil fiber. Because it has a structure that can be conveniently constructed, and natural ecological grass or vegetation can grow, the effect of the invention can provide a slope construction method that can construct a slope with a beautiful appearance similar to the natural ecosystem after construction Have

Simple modifications or changes of the present invention can be easily carried out by those skilled in the art, and all such modifications or changes can be seen to be included in the scope of the present invention.

Claims (5)

In the construction method using the fiber band and the nailing method, When the concrete or mortar is injected, it is located on the slope 14 to construct a fiber zone 1 composed of a pillar part 3 in which concrete pillars are formed and a filter part 2 in which concrete or mortar is not injected. And mortar is injected into the fiber band 1 from the outside to form the pillar portion 3; When the mortar is sufficiently cured, the filter part 2 is cut off; A nail (4) is installed after the hole (13) is drilled in the direction perpendicular to the slope (14) through the cut filter portion (2); Grouting the hole (13) with a cement mortar (5); Fixing the nail (4) onto the column (3) via a support (6); Inserting a washer (7) in the bolt (8) connected to the nail (4) and then tightening with a nut (9); Filling the space (12) or covering the plastic cap (15) in the space so that the ends of the support (6) and the bolt (8) installed between the pillars (3) are not exposed to air; A soil layer is introduced into the filter part 2 in which the nail 4 is not installed to form a soil layer 11; And The soil layer 11 is installed by installing a lawn carpet (lawn carpet) in which grass seeds are planted, planting natural grass, vegetation, flowers or trees, or spraying their seeds on ground soil. To form a landscape slope 14; Environmentally friendly slope reinforcement method comprising the steps. The method of claim 1, wherein the slope (14) is an environmentally friendly slope reinforcement method characterized in that the zigzag-shaped fiber band (1) is provided. The method of claim 1, wherein the nail (4) is an environmentally friendly slope reinforcement method, characterized in that the position of the nail and the number of nails can be installed differently according to the slope of the slope or the type of soil. The method according to claim 1, wherein the hole (13) is provided with a nail (4) formed in a rebar type, bolt type or anchor type. The method of claim 1, wherein the plastic cap 15 is made to be inclined so that water flows down to the soil layer 11, it can be firmly fitted to the bolt (8) by forming a groove in the inner central portion thereof. Environmentally friendly slope reinforcement method.