KR20090032599A

KR20090032599A - Compression structure and method for reinforcing the surface of a slope

Info

Publication number: KR20090032599A
Application number: KR1020070097966A
Authority: KR
Inventors: 김용기; 이충호
Original assignee: 김용기; 이충호
Priority date: 2007-09-28
Filing date: 2007-09-28
Publication date: 2009-04-01

Abstract

The present invention is applied to the non-tensile reinforcement such as steel bar (generally deformed reinforcing bar) to prevent the rocking process of soil reinforcing method that is expressed by the relative displacement occurring between the soil and the reinforcement to prevent rockfall on the slope It relates to a slope ground surface crimp reinforcement structure and a slope ground surface crimp reinforcement method which can omit a separate surface reinforcement process by simultaneously reinforcing slope and surface in nailing construction process in connection with safety net installation process.

Description

Compression structure and method for reinforcing the surface of a slope}

Soil nailing method is a slope stabilization method that increases the safety of the ground by increasing the shear strength of the ground itself by inserting nail reinforcement (mainly reinforcement and cement reinforcement) after drilling the ground with a drill. As such, the small nailing method can make slope slope as steep slope to improve land use efficiency, and since the ground itself is used as a wall, a stable retaining wall can be constructed, and the speed, simplicity, economic feasibility of light equipment Because of its advantages over other methods in terms of use, it is widely used as a flexible ground reinforcement method for slope reinforcement and excavation surface.

In particular, considering the fact that the annual sea ice breakdowns, frequent slope breakdowns during the rainy season, and the domestic situation that result in a lot of human and property damages, the above-mentioned small nailing method is used in terms of field applicability, maintenance, and cost reduction. It is recognized as an efficient method. This small nailing method can be used in conjunction with surface reinforcement methods using nets such as rockfall prevention nets or vegetation greening to reduce the incidence of shallow destruction such as rockfall, fall and surface scrubbing by acupressure plates, wire ropes and protection nets. It can reduce the occurrence rate of vegetation holes by preventing the lifting of the net, thereby reducing the maintenance cost such as maintenance.

The present invention improves the linkage between the conventional soil nailing method and the surface reinforcement method to allow reinforcement of the sloped ground itself and the sloped ground surface at the same time during the soil nailing process, eliminating the separate surface reinforcement process, construction The purpose of the present invention is to provide an inclined ground surface compressive reinforcement structure and an inclined ground surface compressive reinforcement method that can realize the simplification of the process, the reduction of air, and the cost reduction in the construction stage.

The following are the problem solving means derived for realizing the subject of this invention.

1. The pressure plate connected to the wire rope primarily tensioned by the turnbuckle to the surface of the inclined ground receives the restoring force of the stretching device (compressor or tensioning device) and compresses the inclined ground surface. It enables to reinforce the active type surface reinforcement which actively suppresses the surface displacement by moving away from the surface reinforcement of the passive type.

2. The means for pressing the pressure plate on the surface of the inclined ground is implemented with a spring-loaded expansion and contraction device, a bolt for securing the expansion device to the pressure plate, and a U-shaped bolt for fastening between the wire rope and the pressure plate.

3. Maximize the compression effect by linking the pressure plate with the surface reinforcement method using the net such as rockfall prevention net or vegetation net.

According to the present invention has the following effects.

1. Compression Acupressure plate is first tightened with a wire rope tensioned by turnbuckle and then compressed by the spring restoring force of the expansion device (compression device or tension device) connected to the pressure plate to compress the surface of inclined ground by falling rock and scour. Suppress

2. It can reduce the number of accident handling or maintenance by actively suppressing rockfall occurrences or shallow destruction of surface scour, which accounts for most of the cases of slope collapse, thereby reducing social costs.

3. The structure and construction method of connecting acupressure plate with wire rope and extension device can be applied to various inclination ground reinforcement methods such as rock bolting method as well as various small nailing methods using general nails and multi-bar steel nails.

The most advantageous effect of the present invention, the inclined ground surface crimp reinforcement structure and the inclined ground surface crimp reinforcement method is generated by compressing the inclined ground surface portion by the expansion and contraction of the pressure plate connected to the primary tensioned wire rope by the turnbuckle. The surface compressive effect enables the active type surface reinforcement to actively suppress the surface displacement by breaking away from the passive type surface reinforcement like the existing rockfall prevention nets, which accounts for a large number of cases of slope collapse. By actively suppressing shallow destruction such as falling rocks or surface scrubbing, the number of accident handling or maintenance can be reduced, thereby reducing social costs.

Figure 1 schematically shows the inclined ground surface compression reinforcement structure according to the present invention. 2 illustrates a state in which wire rope horizontal lines and vertical lines of unit sizes manufactured by unit sizes are connected by turnbuckles. Fig. 3 schematically shows the inclined ground surface compression reinforcement structure in which the ridge net is installed. Fig. 4 shows the tension device connected between the body portion and the back head of the reinforcement body. Figure 5 shows the outer spring fitted to the back of the head of the reinforcement. Figure 6 illustrates an embodiment further comprising a compression device casing in the outer spring. Figure 7a illustrates an embodiment configured to apply a compressive force to the pressure plate in response to the tensile force introduced to the strand provided with the back head. 7B illustrates an embodiment in which the body and the back of the head are integrated and a separate strand is installed to introduce a tensile force and a compressive force acts on the pressure plate in response. Figure 7c shows an embodiment in which the body portion composed of a steel pipe. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

I. Slope ground surface compression reinforcement structure

The present invention includes a reinforcement (100) consisting of a body portion (110) infiltrating into a drilling hole (2) formed in the inclined ground (1) and a back head (120) protruding out of the inclined ground; A wire rope 200 installed in a lattice shape on the inclined ground surface such that the horizontal lines 200a and the vertical lines 200b are tensioned at each point where the hole 2 is formed; And a plate member which is made larger than the drilling hole 2 and covers an intersection of the horizontal line 200a and the vertical line 200b of the drilling hole 2 and the wire rope 200, and the through hole 310 is formed on the plate surface. Acupressure plate 300; It includes, the back of the head 120 of the reinforcement 100 provides a slope ground surface compression reinforcement structure, characterized in that penetrating through the pressure plate through the hole. (See Figure 1)

The back head 120 of the reinforcement 100 is a rod-shaped member having a male thread formed on an outer circumferential surface thereof, and then inserts the body part 110 into the drilling hole 2 and grouts the wire rope 200. After installing the pressure plate 300 by tightening the tightening nut 130 screwed to the back head 120 and fixed to the pressure plate 300 by the reinforcement 100, the wire rope 200 and the pressure plate 300 Press reinforcement may be applied to the surface of the sloped ground.

The wire rope 200 has a horizontal line (200a) and a vertical line (200b) is made in the unit length is connected to each turn buckle 210 so that the tension is made, before the ground surface reinforcement by the pressure plate 300 1 Primary surface reinforcement can be achieved. (See Figure 2)

In addition, the wire rope 200 is coupled to the pressure plate 300 by the U-shaped bolt 220 and the fixing nut 230 to the tension reinforcement and wire plate 300 by the wire rope 200 against the inclined ground. By close contact with the pressure reinforcement can be organically connected, the inclined ground surface of the lower wire rope 200 can be installed on the ridge net 400 as a whole to prevent rockfall. (See Figure 3)

On the other hand, the reinforcement body 100 by adding a tension device for applying a force to pull the pressure plate 300 in the drill hole or a compression device for applying a force for pressing the pressure plate 300 from the outside of the inclined ground pressure plate 300 It can maximize the close pressure boosting effect by.

The tension device 140 is a 'tension device described in Patent No. 0671927' nail tension device and the soil nailing method using the same 'the applicant filed a patent application on May 20, 2005 and registered on January 15, 2007 'Is applied by applying.

The tension device 140 is provided between the body portion 110 and the laryngeal portion 120 of the reinforcement 100, as shown in FIG.

The tension device 140 is a closed member having a size that is inserted into the drilling hole (2), the front end is coupled to the rear end of the body portion 110 is inserted into the drilling hole (2), the rear end There is an insertion hole is formed, the tension device casing 141 is configured so that a portion of the laryngeal part 120 is inserted through the insertion hole can be accommodated therein; A fixing plate 142 coupled to the front end of the laryngeal part 120; And it is accommodated in the tensioner casing 141, the rear end is coupled to the rear end of the tensioner casing 141 and the front end is coupled to the fixing plate 142, the expansion and contraction according to the movement of the back head 120 Consists of; inner spring 143 for moving the tensioner casing 141. In addition, the front end of the tension device casing 141 is provided with a nut coupling portion 144 may be configured to screw the rear end of the bolted body portion 110.

When utilizing the tension device 140, the tightening nut 130 in the state in which the inner spring 143 is compressed by pulling the back head 120 in the state where the reinforcement 100 is inserted and installed in the drilling hole. Fixing the laryngeal head 120 by) receives the force of pulling the acupressure plate 300 toward the inclined ground by the restoring force of the inner spring 143, thereby improving the inclined ground reinforcement effect by the acupressure plate 300.

The compression device has been filed by the applicant on March 6, 2007, the patent application No. 2007-0021964 of the unpublished state as of the present application 'ground pressurizing device, pressurized rock bolting method and pressurized soil nailing method' Compressor 'is applied.

The compression device is an outer spring 150 that is fitted to the rear head portion 120 protruding to the upper portion of the pressure plate 300, as shown in Figure 5, the outer spring 150 presses the pressure plate 300 It is fixed by the tightening nut 130 in the compressed state. In addition, the compression device 150 may be configured to further include a compression device casing (160a) covering the entire back of the head 120 and fixed to the pressure plate 300 (see Fig. 6 (a)) ), The upper surface is formed with a through hole having a diameter larger than the diameter of the laryngeal part 120 and smaller than the diameter of the outer spring 150, the laryngeal part 120 in the compressed state covering the outer spring 150 ) And the compression device casing (160b) is fixed by the fastening of the tightening nut 130 may be configured to include (see Fig. 6 (b)).

When the compression device is utilized, the reinforcing member 100 is inserted into the drilling hole and the outer spring 150 is fixed with the tightening nut 130 in the compressed state. Since the pressure plate 300 is subjected to the pressing force toward the inclined ground by the restoring force, the inclined ground reinforcing effect by the pressure plate 300 is enhanced.

On the other hand, the embodiments shown in Figure 7a to 7c is configured to apply a compressive force to the pressure plate in response to the tension force introduced to the strands instead of the restoring force of the spring. In this case, as shown in FIG. 7A, the body portion of the reinforcement is formed of a reinforcing bar and a back head is formed of a strand, or as shown in FIG. 7B, the body portion and the head of the reinforcement are formed of a single form of reinforcing bar. In addition, it is configured to introduce a tensile force by mounting the strand through a separate connecting member (in this case, one or more of the strand may be mounted), or as shown in Figure 7c the steel pipe of the reinforcement body It is possible to consider a variety of forms, such as the configuration, and to form a laryngeal head with a strand.

II. Slope ground surface compression reinforcement method

The present invention comprises the steps of (a) perforating the inclined ground (1) to form a drilling hole (2); (b) inserting and installing a reinforcement 100 having a rod-shaped laryngeal part 120 protruding out of the ground at one end of the body part 110 and having a male thread formed on an outer circumferential surface thereof, in the drilling hole 2; (c) injecting a grout material (3) into the drilling hole (2) to fix the reinforcement (100) to the inclined ground (1); (d) installing the wire ropes 200 so that the horizontal lines 200a and the vertical lines 200b intersect at each point where the perforation holes 2 on the surface of the inclined ground 1 are formed; (e) is made larger than the drilling hole (1), the pressure plate 300 having a through hole 310 formed on the plate surface is pressed into the ground around the drilling hole (1), the back of the head 120 of the reinforcement 100 is Installing to protrude into the through hole 310 of the pressure plate 300, and pre-fastening the wire rope 200 and the pressure plate 300; And (f) tensioning the horizontal line 200a and the vertical line 200b of the wire rope 200 and tightening and fixing the wire rope 200 and the pressure plate 300, and the reinforcement 100. Coupling the tightening nut 130 to the rear head 120 to tighten the nut to fix the pressure plate 300 in close contact with the inclined ground; It provides a slope ground surface compression reinforcement method characterized in that consisting of.

Step (a) is a step of forming a hole (2) by drilling the inclined ground (1). In this step, when drilling the inclined ground (1), generally, a crawler drill using compressed air is effectively used. In the case of viscous soil or loose landfill soil, construction is not performed by using a hydraulic drill or using a drilling tool for drilling. It may be difficult.

Drilling work should be carried out paying attention to the gap, diameter, location, direction, depth, etc. of the drilling hole (2), and in particular, after grasping and examining the underground structure, building foundation, cavity, etc. in the inclined ground (1), and establish a drilling plan. In addition, after the drilling operation is made must be clean inside the drilling hole (2).

In the step (b), the reinforcement body 100 having a rod-shaped rear head portion 120 protruding out of the inclined ground 1 at one end of the body portion 110 and having a male thread formed on an outer circumferential surface thereof is formed in the drilling hole 1. Insert and install.

Body portion 110 is to be removed in advance of the foreign matter on the contact surface for attachment to the grout material (3). In addition, the body portion 110 installed for the purpose of permanent reinforcement should consider the margin for corrosion or use a rust preventive reinforcement (epoxy coating, etc.). Body portion 110 is good to use without a joint. The body portion 110 may use a spacer so that it can be located at the center of the hole 2 to maintain the minimum thickness of the grout material.

On the other hand, the reinforcement 100 is used that the tension device 140 is further provided between the body portion 110 and the back of the head 120, the tension device 140 is sized to be inserted into the drilling hole (2) It is a closed member having a hollow inside, the front end is coupled to the rear end of the body portion 110 is inserted into the drilling hole 2, the rear end is formed with an insertion hole, a part of the back head 120 is the insertion hole A tensioner casing 141 configured to be inserted through and accommodated therein; A fixing plate 142 coupled to the front end of the laryngeal part 120; And it is accommodated in the tensioner casing 141, the rear end is coupled to the rear end of the tensioner casing 141 and the front end is coupled to the fixing plate 142, the expansion and contraction according to the movement of the back head 120 While the tension device casing 141 to move the inner spring (143); using that consisting of, in step (f) to be described later, when fixing the pressure plate 300 in close contact with the inclined ground (1), the rear head ( By pulling 120, the inner spring 143 may be compressed and then fixed.

In the step (c), the grout material 3 is injected into the drilling hole 2 to fix the reinforcement 100 on the ground. The grout material (3) should be filled to be completely filled in the drilling hole (2) and can be additionally worked three to six times depending on the permeability of the ground. At least two injection hoses are installed, one is located at the bottom of the drilling hole 2 and the other is located at 3/4 point from the entrance of the drilling hole 2 to perform the injection after the second. . When the grout material 3 fills up, the injection hose is slowly drawn out and injected until the first injection flows over the surface, and the final injection flows through the inlet of the drilling hole 2 of the surface. In addition, the grouting material (3) injection time for each step, since the grouting is associated with the puncture angle will affect the air in the method of calculating the grouting time accordingly. After the grouting has a curing period of at least one week to obtain the required strength, in this case, the external load should not be applied to the reinforcement (100). However, with a fastener, 80% of the required strength can be obtained in one to three days.

In addition, when the groundwater level is high, a horizontal drainage hole is installed to reduce the groundwater level by inserting a perforated pipe in the reinforced slope ground. In the case of reinforcing soil with high groundwater level by soil nailing construction, horizontal drainage is a necessary process because it may cause problems in drawing breakage and soil nailing method itself due to lack of frictional resistance.

Step (d) is a step of installing the wire rope 200 so that the horizontal line 200a and the vertical line 200b intersect at each point where the perforation hole 2 on the surface of the inclined ground 1 is formed. In addition, before the wire rope 200 is installed on the inclined ground 1, the ridge net 400 may be further included to be laid to prevent rockfall. The ridge network 400 may be made of PVC material, and is installed to cross the wire rope 200 horizontally and vertically after spreading on the surface of the inclined ground (1).

The step (e) is made larger than the drilling hole (2), the pressure plate 300, the through-hole 310 is formed on the plate surface is pressed into the ground around the drilling hole (2), but the back head 120 of the reinforcement 100 ) Is installed to protrude into the through hole 310 of the pressure plate 300, and pre-fastening the wire rope 200 and the pressure plate 300.

On the other hand, in the present step further includes the step of fitting the outer spring 150 to the back of the head protruding to the top of the pressure plate 300, in the step (f) to be described later, the tightening nut 130 in the back of the head 120 Coupled to tighten the nut, it may be made to further include a step of fixing the outer spring 150 in a compressed state to press the pressure plate 300.

In the step (f), the horizontal rope 200a and the vertical wire 200b of the wire rope 200 are tensioned, the wire rope 200 and the pressure plate 300 are fastened and fixed, and the reinforcement 100 By tightening the nut by coupling the tightening nut 130 to the back of the head 120 of the) is a step of fixing the pressure plate 300 in close contact with the inclined ground (1). At this time, when the wire rope 200 is connected to the horizontal line 200a and the vertical line 200b manufactured by the unit length with the turnbuckle 210, the wire rope 200 is pulled tightly by the turnbuckle 210. Can strongly press the inclined ground (1).

The wire rope 200 and the pressure plate 300 may be bound by the U-shaped bolt 220 and the fixing nut 230. In this case, the acupressure plate 300 is installed by inserting the reinforcement body 100 into the back head 120 and after pre-fastening the wire rope 200 and the acupressure plate 300 using the U-shaped bolts 220, the acupressure plate 300. Tighten the wire rope 200 and the pre-fastened wire rope 200 and the vertical line (200b) both by using a turnbuckle 210, and then fully tighten the pre-fastened U-shaped bolt 220 to the acupressure plate 300 The wire rope 200 is bound, and the back head 120 of the reinforcement 100 protruding out of the pressure plate 300 is tightened and fastened with a tightening nut 130.

At this time, as described above, when the tension device 140 or the outer spring 150 in which the inner spring 143 is mounted is compressed and fixed to the tightening nut 130, the inner spring 143 or the outer spring 150 is fixed. By the restoring force of the acupressure plate 300 can be strongly pushed in the direction of the inclined surface (1), the wire rope 200 tensioned primarily by the turnbuckle 210 is subjected to the secondary tension again ridge net ( 400 is more closely adhered to the surface of the inclined ground (1).

The inclined ground surface crimp reinforcement method can be linked with the greening method, in this case, it is possible to reduce the incidence rate of vegetation holes by eliminating the lifting phenomenon of the vegetation net by the compression effect on the inclined ground surface.

Figure 1 schematically shows the inclined ground surface compression reinforcement structure according to the present invention.

2 illustrates a state in which wire rope horizontal lines and vertical lines of unit sizes manufactured by unit sizes are connected by turnbuckles.

Figure 3 schematically shows a slope ground surface compression reinforcement structure provided with a ridge net.

Figure 4 shows a tension device connected between the body and the back of the head of the reinforcement.

Figure 5 shows the outer spring fitted to the back of the head of the reinforcement.

Figure 6 illustrates an embodiment further comprising a compression device casing in the outer spring.

Figure 7a illustrates an embodiment configured to apply a compressive force to the pressure plate in response to the tensile force introduced to the strand provided with the back head.

7B illustrates an embodiment in which the body and the back of the head are integrated and a separate strand is installed to introduce a tensile force and a compressive force acts on the pressure plate in response.

Figure 7c shows an embodiment in which the body portion composed of a steel pipe.

1: inclined ground 2: drilling hole

100: reinforcement 110: body portion

120: back head 130: tightening nut

140: tension device 141: tension device casing

142: fixing plate 143: inner spring

144: nut coupling part 150: outer spring

160a, 160b: compression device casing 200: wire rope

210: turnbuckle 220: U bolt

230: fixing nut 300: pressure plate

310: through hole 400: ridge net

Claims

A reinforcement (100) consisting of a body portion (110) penetrating into the drilling hole (2) formed in the inclined ground (1) and a back head (120) protruding out of the inclined ground (1);

A wire rope 200 installed in a lattice shape on the inclined ground surface so that the horizontal lines 200a and the vertical lines 200b are tensioned at each point where the hole 1 is formed; And

The plate member is made larger than the perforation hole 2 and covers the intersection of the horizontal line 200a and the vertical line 200b of the perforation hole 2 and the wire rope 200, and the acupressure plate having the through hole 310 formed on the plate surface. 300; Including,

The back head portion 120 of the reinforcement 100 is inclined ground surface compression reinforcement structure, characterized in that the penetrating through the through hole 310 of the pressure plate 300 is fixed.

In claim 1,

The rear head portion 120 of the reinforcement 100 is a rod-shaped member having a male screw formed on an outer circumferential surface thereof, and is characterized by being fixed by screwing with a tightening nut 130.

In claim 2,

The wire rope 200 is inclined ground surface crimped reinforcement structure, characterized in that the tension is made by connecting the horizontal line (200a) and the vertical line (200b) is made of a unit length, each turn buckle (210).

In claim 3,

The wire rope 200 is inclined ground surface compression reinforcement structure, characterized in that the binding to the pressure plate 300 by the U-shaped bolt 220 and the fixing nut 230.

In claim 2,

Slope ground surface compression reinforcement structure, characterized in that the ridge net 400 is installed on the surface of the slope ground (1) below the wire rope 200 as a whole.

The method according to any one of claims 1 to 5,

The reinforcement 100 is provided with a tension device 140 connected between the body portion 110 and the back of the head 120,

The tension device 140,

A closed member having a size that is inserted into the drilling hole 2 and the inside is empty, the front end is combined with the rear end of the body portion 110 to be inserted into the drilling hole 2, the rear end is formed with an insertion hole, the back head A tensioner casing 141, a portion of which is inserted through the insertion hole and accommodated therein;

A fixing plate 142 coupled to the front end of the laryngeal part 120; And

It is accommodated in the tensioner casing 141, the rear end is coupled to the rear end of the tensioner casing 141 and the front end is coupled to the fixing plate 142, while stretching according to the movement of the back head 120 An inner spring 143 for moving the tensioner casing 141; Slope ground surface compression reinforcement structure, characterized in that consisting of.

The method according to any one of claims 2 to 5,

The inclined ground, characterized in that the outer spring 150 is fitted to the back of the pressure plate 300 protruding to the upper portion of the pressure plate 300 is fixed by a tightening nut 130 in a compressed state to press the pressure plate 300. Surface compression reinforcement structure.

In claim 7,

Slope ground surface compression reinforcement structure characterized in that it further comprises a compression device casing (160a) covering the entire back of the head portion 120 and fixed to the pressure plate 300.

In claim 7,

The upper surface is formed with a through hole having a diameter larger than the diameter of the laryngeal part 120 and smaller than the diameter of the outer spring 150, and covers the outer spring 150 and the laryngeal part 120 in a compressed state. Slope ground surface compression reinforcement structure characterized in that it further comprises a compression device casing (160b) fixed by the fastening of the tightening nut (130).

(a) perforating the inclined ground 1 to form a perforation hole 2;

(b) inserting and installing a reinforcement 100 having a rod-shaped laryngeal portion 120 protruding out of the ground at one end of the body portion 110 and having a male thread formed on an outer circumferential surface thereof, in the drilling hole 2;

(c) injecting a grout material (3) into the drilling hole (2) to fix the reinforcement (100) to the inclined ground (1);

(d) installing the wire ropes 200 so that the horizontal lines 200a and the vertical lines 200b intersect at each point where the perforation holes 2 on the surface of the inclined ground 1 are formed;

(e) is made larger than the drilling hole (1), the pressure plate 300 having a through hole 310 formed on the plate surface is pressed into the ground around the drilling hole (1), the back of the head 120 of the reinforcement 100 is Installing to protrude into the through hole 310 of the pressure plate 300, and pre-fastening the wire rope 200 and the pressure plate 300; And

(f) tension the horizontal line 200a and the vertical line 200b of the wire rope 200 and tighten and fix the wire rope 200 and the pressure plate 300, and the back head of the reinforcement 100 Coupling the tightening nut 130 to the 120 to tighten the nut to fix the pressure plate 300 in close contact with the inclined ground; Slope ground surface compression reinforcement method characterized in that consisting of.

In claim 10,

The reinforcement 100 uses a tension device 140 is further provided between the body 110 and the back of the head 120, the tension device 140 has a size that is inserted into the drilling hole (2). As a closed member having an empty inside, the front end is coupled to the rear end of the body portion 100 to be inserted into the hole (2), the rear end is formed with an insertion hole, a portion of the back head 120 is inserted through the insertion hole A tensioner casing 141 configured to be accommodated therein; A fixing plate 142 coupled to the front end of the laryngeal part 120; And it is accommodated in the tensioner casing 141, the rear end is coupled to the rear end of the tensioner casing 141 and the front end is coupled to the fixing plate 142, the expansion and contraction according to the movement of the back head 120 An inner spring 143 for moving the tensioner casing 141; It consists of

In the step (f), when the acupressure plate 300 is fixed to the inclined ground, the inclined ground surface compression is characterized in that after pulling the head 120 to compress and fix the inner spring 143. Reinforcement method.

In claim 10,

The step (e) further includes the step of fitting the outer spring 150 to the back of the head portion 120 protruding to the top of the pressure plate 300,

In the step (f), the fastening nut 130 is coupled to the back head 120 to tighten the nut, and the outer spring 150 further includes a process of fixing the compressed state to press the pressure plate 300. Slope ground surface crimping reinforcement method characterized in that consisting of.

The method according to any one of claims 10 to 12,

The wire rope 200 is used to connect the horizontal line (200a) and the vertical line (200b) produced by the unit length with a turnbuckle 210,

The wire rope 200 and the pressure plate 300 is inclined ground surface compression reinforcement method characterized in that the binding by the U-shaped bolt 220 and the fixing nut 230.

In claim 13,

Step (d), the slope ground surface compression reinforcement method characterized in that further comprising the step of laying the ridge net 400 on the slope ground (1) before installing the wire rope 200.