KR102547910B1 - Slope Greening Structure with Stabilized Vegetation Base Layer and its Construction Method - Google Patents

Abstract

The present invention relates to a slope greening structure with a stabilized vegetation base layer and a greening method thereof. To this end, the slope greening structure with a stabilized vegetation base layer comprises: a plurality of lock bolts buried in a slope at prescribed intervals to stabilize the ground; a falling stone prevention net forming a filling space with a prescribed thickness from the slope; a plurality of anchor pins having a fixing part formed on one side thereof to be inserted and fixed into the ground and a ring-shaped stopping part formed on the other side thereof to stop and fix the falling stone prevention net; and a vegetation base layer coated with a vegetation base material to be formed in a prescribed thickness to fill the filling space. Accordingly, the filling space, which is filled with the vegetation base material, is formed by the falling stone prevention net, and the falling stone prevention net provided on the vegetation base layer functions as a reinforcing material to secure an attaching performance to effectively prevent scouring or soil loss of the vegetation base layer caused by rainfall or drying caused by sunshine.

Description

Slope Greening Structure with Stabilized Vegetation Base Layer and its Construction Method

The present invention relates to a slope greening structure and a greening method having a stabilized vegetation layer, and more particularly, to reinforce the slope to stabilize the ground and at the same time to improve the attachment performance of the vegetation layer to prevent loss and increase the germination rate. It relates to a slope greening structure and greening method having a stabilized vegetation base layer secured and capable of environmentally friendly greening.

In general, slopes such as new roads or sites created by civil engineering work have unfavorable conditions for vegetation to grow, making it difficult to create grasslands in the early stages, and there was a problem of soil loss or falling rocks on the slopes. In recent years, by spraying artificial soil mixed with vegetation base materials such as vegetation seeds on the slope to form a vegetation base layer of a certain thickness, loss of soil or occurrence of rockfall is prevented and landscaping is formed.

Regarding this recording method, Patent Registration No. 10-2414455 (registered on June 24, 2022, hereinafter referred to as 'Prior Art Document 1') has been proposed. As shown in FIG. 1A, the structure of the slope anchor block equipped with a vegetation plate of Prior Art Document 1 is an anchor block (3) into which a vegetation plate (2) is inserted using an anchor (1) that is drilled and inserted into a slope (g). ) is fixed to the slope, and in the anchor block (3), the vegetation plate insertion part (3a) into which the vegetation plate (2) is inserted, and the vegetation plate insertion part (3a) is formed through and the anchor (1) is fixed An anchor insertion portion (3b) was provided.

However, according to the greening method of Prior Art Document 1, it was difficult for plant roots to grow naturally due to the narrow growth space due to the limited volume of the vegetation part, and the construction was cumbersome and the construction period was complicated by forming a retaining wall using the anchor block (3) In addition to requiring a lot of cost and cost, the anchor block 3 is not friendly to nature because it is made of concrete, and it is difficult for the vegetation to grow uniformly on the entire slope.

In addition, Patent Registration No. 10-0869915 (registered on November 17, 2008, hereinafter referred to as 'Prior Art Document 2') proposes a vegetation composition for slope greening and a slope greening method using the same. As shown in FIG. 1B, the slope greening method of Prior Art Document 2 includes dry artificial soil (5) attached to the slope (4) and wet artificial soil (6) attached to the upper surface of the dry artificial soil (5). , And continuous long fibers 7 sprayed simultaneously with the attachment of the dry and wet artificial soils 5 and 6 and mixed with the dry and wet artificial soils 5 and 6, and the separation of the dry artificial soil 5 In order to prevent this, it was formed to include a rhombus net 8 fixed to the slope surface 4 by anchor pins 9.

However, in the slope greening method of Prior Art Document 2, as artificial soil is simply attached to the slope using continuous long fibers 7, if the initial greening is delayed in a state where the slope is not stabilized, depending on natural conditions There was a limit to the fact that the artificial soil on the slope was easily lost when drying by sunlight and rainfall were repeated. Due to this, not only is it necessary to frequently perform restoration work on the slope, but in severe cases, the slope collapses, resulting in a high risk of safety accidents.

In addition, the applicant of the present invention proposes Registered Patent No. 10-1267231 (registered on May 20, 2013, hereinafter referred to as 'Prior Art Document 3'), and mixes clay balls with artificial soil containing fiber-based materials to make hot clay. By manufacturing and applying it to the slope surface, it was intended to secure the adhesive force or adhesive force with the slope surface. However, since the fiber-based material of Prior Art Document 3 is made of nylon fibers, there is a limitation in that it is difficult to form surface frictional force. there was.

For this reason, in Patent Registration No. 10-0888230 (registered on March 4, 2009, hereinafter referred to as 'Prior Art Document 4'), long fibers are provided in the vegetation substrate, but the long fibers are applied to the slope by a separate threading machine. Artificial entanglement was induced by layering, but due to this, there was a cumbersome limitation in construction.

Republic of Korea Patent Registration No. 10-2414455 (registered on June 24, 2022) Korean Registered Patent No. 10-0869915 (registered on 11/17/2008) Republic of Korea Patent Registration No. 10-1267231 (registered on May 20, 2013) Korean Registered Patent No. 10-0888230 (registered on March 4, 2009)

The present invention has been made to solve the above problems, and it is possible to record early in an environment where it is difficult to green, prevent the occurrence of falling soil and rockfall on a slope, and at the same time, it is possible to smoothly grow seeds and firmly establish roots. The purpose is to record the slope for a long time.

In addition, it is an object of the present invention to provide a slope greening structure and greening method having a stabilized vegetation layer capable of effectively preventing scour and loss of artificial soil even if vegetation is delayed by creating a vegetation layer on a stabilized slope.

In the slope greening structure having a stabilized vegetation base layer according to an embodiment of the present invention, a plurality of rock bolts 100 are buried on the slope at predetermined intervals to stabilize the ground (G), and a rockfall prevention net provided on the slope ( 300) includes a first mesh body 300a in which a plurality of lattice networks 310 having four twisted parts 302 are formed by alternately crossing adjacent steel wires 301 on one side and the other side, and the first mesh body 300a ) and a second mesh body 300b having the same structure as the first mesh body 300a and spaced apart from each other to form a filling space S having a predetermined thickness therebetween, the fall prevention net 300 ) Is provided with a plurality of anchor pins 400 to fix, the anchor pin 400 has a fixing piece 410 formed on one side so as to be inserted and fixed into the ground G, and the anti-falling net 300 is caught on the other side. A hooking piece 420 is formed to be fixed, and the hooking piece 420 includes a first ring 421 bent to be hooked and fixed to the twisted portion 302 of the first mesh body 300a, and the first ring 421 ) and a second ring 422 formed spaced apart in the longitudinal direction and bent to be hooked and fixed to the twisted portion 302 of the second mesh body 300b, but the first and second rings 421 and 422 are It is formed separately, and a fitting protrusion 425 is formed at the upper end of the first ring 421, and a fitting part having a groove 424a into which the fitting protrusion 425 is inserted is provided at the lower side of the second ring 422. The direction of the second ring 422 can be flexibly adjusted so that the direction of the second ring 422 is directed toward the twisted portion 402 by forming 424 and combining them in a mutually fitting manner, and the opening 421a of the first ring 421 is Facing the lower part, the opening part 422a of the second ring 422 is formed toward the upper part, and the vegetation base material GS is applied to fill the filling space S to a predetermined thickness of the vegetation base layer ( 600) is formed.

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In addition, the slope greening structure having a stabilized vegetation layer includes a plurality of rock bolts 100 buried in the slope at predetermined intervals to stabilize the ground (G); A rockfall prevention network 300 forming a filling space S having a predetermined thickness from the slope; A plurality of anchor pins 400 having a fixing piece 410 formed on one side to be inserted and fixed into the ground (G) and a ring-shaped locking piece 420 formed on the other side so that the fall prevention net 300 is caught and fixed; And a vegetation base layer 600 formed to a predetermined thickness by applying a vegetation base material (GS) to fill the filling space (S); including, the vegetation base material (GS) is a volume ratio, Masato and sewage 85 to 93% of soil mixed with sludge, 5 to 10% of soil moisturizer, 0.5 to 1.5% of vegetable long fibers, and 1.5 to 3.5% of a hardening agent including cement, wherein the hardening agent is cement, And a mixture of cementless neutral solidifying agent, wherein the cementless neutral solidifying agent includes at least one selected from fly ash, bottom ash, paper ash, anhydrous gypsum, chemical gypsum and blast furnace slag fine powder, The cement-based neutral solidifying agent is characterized in that 0.3 to 0.5 kg is mixed based on the volume of vegetation base material (GS) of 1㎥.

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On the other hand, the slope greening method having a stabilized vegetation layer of the present invention includes a rock bolt embedding step (S10) of stabilizing the ground (G) by embedding a plurality of rock bolts (100) on the slope at predetermined intervals; A fallfall prevention network installation step (S30) of installing a fallfall prevention network 300 so that a filling space S having a predetermined thickness is formed from the slope; And a vegetation base layer forming step (S40) of forming a vegetation base layer 600 by applying a vegetation base material so that the filling space S formed by the fall prevention net 300 is filled (S40).

And the rockfall prevention network installation step (S30) includes a first netting step (S31) of disposing a first netting body (300a) on the outside of the slope; A first mesh fixing step (S32) of fixing the first mesh 300a to the slope using the anchor pin 400; And a second mesh body for forming a filling space (S) between the first mesh body (300a) and the second mesh body (300b) by disposing the second mesh body (300b) at a predetermined interval on the outside of the first mesh body (300a). Step (S33); may include.

According to the slope greening structure and greening method having a stabilized vegetation layer of the present invention, the natural ecology can be restored by creating a vegetation layer on the slope, and natural scenery can be formed early, so harmony with the surroundings can be promoted. Nevertheless, since the fall prevention net is stably fixed to the slope by the rock bolts and anchor pins, it is possible to effectively prevent the occurrence of falling rocks and rocks.

In particular, since the vegetation substrate is reinforced by the rockfall prevention net in a state in which the slope is stabilized by the rock bolt, the structural stability of the slope can be promoted.

In addition, since a filling space filled with vegetation base material is formed by the fallout prevention network, and the falloff prevention net provided in the vegetation base layer functions as a reinforcing material to secure adhesion performance, soil loss of vegetation base layer due to drying or precipitation by sunlight or scour can be effectively prevented.

Furthermore, since the filling space between the pair of first and second net bodies can be stably secured with a constant interval by means of an anchor pin or a fastening device, the vegetation base material can be constructed quickly and firmly. As a result, it is possible to reduce the construction period and cost, thereby securing economic feasibility.

On the other hand, the vegetation substrate of the present invention is provided with vegetable long fibers to eliminate the economic inefficiency caused by artificially manufacturing chemical fibers or biodegradable fibers in a wrinkled shape, and the added solidifying agent is attached to the vegetable long fibers to prevent soil By increasing the binding and slowing down the corrosion of the vegetable long fibers as much as possible, the reinforcing effect of the vegetable long fibers can be maintained as much as possible.

In addition, even if the solidifying agent is mixed with a neutral cementless solidifying agent and continuously repeats shrinkage, drying, and wet expansion according to sunshine and rainfall, it strengthens the binding force of the vegetation substrate to minimize the occurrence of cracks and loss of soil. However, if a neutral solidifying agent in an appropriate range is mixed, a large amount of micropores are formed when moisture evaporates, so space for breathing and growth of vegetation roots can be provided.

In addition, when a neutral solidifying agent in an appropriate range is mixed, the vegetation base material can be maintained in a neutralized state of pH 8.0 or less, which has the advantage of facilitating the growth of vegetation.

1a and 1b are cross-sectional views showing installation states according to Prior Art Documents 1 and 2, respectively.
2 is a cross-sectional view showing a construction state of a greening structure having a vegetation base layer according to an embodiment of the present invention.
3A and 3B are perspective and cross-sectional views illustrating a fall prevention net according to the embodiment shown in FIG. 2 .
4 shows an anchor pin according to an embodiment of the present invention.
5 is a cross-sectional view showing a construction state of a greening structure having a vegetation base layer according to another embodiment of the present invention.
6A and 6B are perspective and cross-sectional views of the fall prevention net according to the embodiment shown in FIG. 5 .
7a to 7c show the shape of an anchor pin according to various embodiments of the present invention.
8 is a cross-sectional view showing a construction process of a greening structure having a vegetation base layer according to another embodiment of the present invention.
9 is a block diagram showing a greening method having a vegetation base layer according to an embodiment of the present invention.
10 is a block diagram sequentially showing steps for installing a fall prevention network according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail based on the matters shown in the drawings.

The slope greening structure having a stabilized vegetation layer according to the present invention is for stabilizing and greening the slope of a new road or a site created by civil engineering, as in the embodiment shown in FIGS. 2 and 5, A rock bolt 100 is buried to reinforce the ground G of the slope, a fall prevention net 300 is provided on the top of the slope, and a vegetation base layer 600 is formed with a predetermined thickness between the slope and the fall fall prevention net 300. It is built by filling.

A plurality of lock bolts 100 are buried in the ground (G) of the slope at predetermined intervals to stabilize the slope, and a hole is formed in the ground (G) at a certain depth, and a lock bolt 100 is inserted into the hole. By inserting and injecting the grouting material, stabilization of the slope by the lock bolt 100 can be expected.

In addition, the difference exists in that the rockfall prevention net 300 is formed so that a filling space S having a predetermined thickness is provided at the top of the slope, and the vegetation base material GS is the filling space S It is filled so as to be filled, and the vegetation base layer 600 is formed.

To explain this in detail, the rockfall prevention network 300 can form a filling space S having a predetermined thickness from the slope, and the filling space S is filled with a vegetation base material GS is applied to the vegetation base. The layer 600 is formed to a thickness corresponding to the filling space (S). That is, since the vegetation base material GS is reinforced by the rockfall prevention net 300 and the attachment performance can be improved, it is possible to construct a structurally excellent vegetation base layer 600 in which loss or separation of soil is reduced even in rain or over time. can provide Of course, the vegetation base layer 600 may be formed thicker than the filling space (S) as shown in FIG.

In addition, based on this structure, the slope can be stabilized to prevent falling soil or rockfall due to natural disasters, and at the same time, scour of the vegetation layer can be effectively prevented even if rainfall occurs.

On the other hand, as shown in FIGS. 2 and 5, the lock bolt 100 may include a pressure plate 110 having one surface facing the surface of the ground G so as to press and fix the fall prevention net 300 on the slope. can That is, according to the structure described above, since the anti-falling net 300 can be pressurized and fixed to the slope by the pressure plate 110, the anti-falling net 300 can effectively support falling soil or falling rocks that may occur on the slope.

In addition, since the falloff prevention network 300 serves to improve the attachment performance of the vegetation base material GS so that the soil loss rate of the vegetation base layer 600 formed by the vegetation base material GS is reduced, the rockfall The prevention net 300 must be stably fixed to the slope. To this end, the anchor pins 400 are caught and fixed to the fall prevention net 300 at regular intervals so that a uniform binding force is secured to the fall fall prevention net 300.

Hereinafter, with reference to the embodiments shown in FIGS. 2 to 4 , a vegetation structure using the rockfall prevention net 300 secured to a certain thickness d according to an embodiment of the present invention will be described. As shown in FIGS. 2 to 4, when the fall prevention net 300 of one embodiment is placed on a slope, a filling space S is provided therebetween by a thickness d formed by crossing a plurality of steel wires 301. It can be.

Referring to FIGS. 3A and 3B, the structure of the fall prevention net 300 according to the embodiment will be described in more detail. It can be manufactured to secure the thickness (d). In the fall prevention network 300, a plurality of lattice networks 310 are formed by successively crossing a plurality of steel wires 301 with adjacent steel wires 301, and four twisted parts based on a single lattice network 310 ( 302).

At this time, the fall prevention net 300 is formed to a predetermined thickness (d) so as to provide a filling space (S), and the diameter of the steel wire 301 is 2.3 to 4.0 to ensure stable protection performance from falling soil and rocks. mm, and preferably has a tensile strength of 1000 Mpa or more. In addition, it is preferable that the thickness (d) of the rockfall prevention net 300 is secured at least 50 mm or more so that the vegetation base material (GS) can be sufficiently filled.

On the other hand, the anti-falling net 300 may be partially fixed to the slope by the pressure plate 110, but the anchor pin 400 is fixed to the slope at regular intervals so that the anti-falling net 300 can be uniformly and stably fixed to the slope as a whole It is clamped so that it is inserted into (G). As shown in FIG. 4, the anchor pin 400 has a fixing piece 410 formed on one side to be inserted into the ground G, and an annular locking piece 420 on the other side so that the anti-rockfall net 300 is hooked and fixed. can be formed.

At this time, it is preferable that the hooking piece 420 of the anchor pin 400 is caught on the twisted portion 302 of the anti-falling net 300 for stable binding with the anti-falling net 300. In addition, if necessary, as shown in FIG. 2, the binding band ( 423) can be constrained.

Hereinafter, as another embodiment of the present invention with reference to FIGS. 5 to 7, a vegetation structure using a rockfall prevention net 300 composed of a pair of meshes 300a and 300b will be described.

As shown in FIGS. 5 to 7, the greening structure according to another embodiment of the present invention includes a first mesh 300a and a second mesh 300b in which fallfall prevention nets 300 are spaced apart from each other by a predetermined distance t. It can be configured to include. Accordingly, as shown in FIG. 5, a filling space S is provided corresponding to the distance t between the first mesh body 300a and the second mesh body 300b.

More specifically, as shown in FIGS. 6A to 6B, the first mesh body 300a and the second mesh body 300b disposed spaced apart from the outside of the first mesh body 300a may have the same structure as each other, , For example, the fall prevention net 300 having the first and second meshes 300a and 300b may be formed by alternately crossing adjacent steel wires 301 to one side and the other side.

At this time, a plurality of lattice networks 310 may be formed by continuously crossing a plurality of steel wires 301 with adjacent steel wires 301, and a structure in which four twisted parts 302 are formed based on a single lattice network 310 can be On the other hand, in order to secure sufficient protective performance of the anti-rockfall net 300, the steel wire 301 may have a diameter of 2.3 to 4.0 mm and a tensile strength of 290 to 540 Mpa.

Hereinafter, the structure of the anchor pin 400 of various embodiments formed so as to be applied to the fall prevention net 300 having the first and second mesh bodies 300a and 300b will be described with reference to FIGS. 7A to 7C. .

The hooking piece 420 of the anchor pin 400 includes a first ring 421 hooked on the first mesh body 300a and a second ring 422 hooked on the second mesh body 300b. ) may be formed together. In detail, the first ring 421 is bent and fixed to the twisted portion 302 of the first mesh body 300a, and the second ring 422 is spaced apart from the first ring 421 in the longitudinal direction. It may be formed bent so as to be caught and fixed to the twisted portion 302 of the second mesh body 300b. At this time, it is preferable that the first ring 421 and the second ring 422 are bent in the same direction to prevent the second mesh body 300b from being separated.

That is, as shown in FIG. 7A, the first ring 421 of the anchor pin 400 is bent so that the opening 421a is formed in the downward direction provided with the first net body 300a, The second ring 422 of the pin 400 may also have an opening 422a formed toward the lower side. Thus, the first ring 421 passes through the lattice net 310 of the first mesh 300a of the fall prevention net 300, and the open part 421a is caught and fastened to the twisted part 302, and the second The ring 422 may pass through the lattice net 310 of the second net body 300 b of the fall prevention net 300 so that the open part 422 a is engaged with the twisted part 302. According to the structure described above, there is an advantage in that the first mesh body 300a and the second mesh body 300b can have excellent protection performance by resisting earth pressure applied outward.

According to another embodiment, the anchor pin 400, as shown in FIG. The first ring 421 is bent to form an opening 421a toward the lower direction provided with the first mesh body 300a, and the second ring 422 is bent upward toward the second mesh body 300b provided. It may be bent to form an opening 422a toward the .

That is, the first ring 421 passes through the grid 310 of the first mesh 300a of the fall prevention net 300, and the opening 421a is engaged with the twisted portion 302, and the second The ring 422 may be provided such that the opening 422a supports the twisted portion 302 of the second mesh body 300b from the lower side. Thus, it is possible to solve the problem that the second mesh body 300b does not maintain the distance t and overlaps with the first mesh body 300a. At this time, since the second mesh body 300b can be separated from the second ring 422, it is preferable to be restrained by the coupling band 423.

In addition, according to another embodiment, the anchor pin 400 has a second anchor pin 400 at the upper end of the first ring 421, as shown in FIG. The rings 422 may be coupled to each other in a fitting manner. That is, on the upper side of the first ring 421, a fitting protrusion 425 extending upward by a predetermined distance is formed, and on the lower side of the second ring 422, a groove portion into which the fitting protrusion 425 is fitted. A fitting portion 424 provided with 424a may be formed.

Thus, even after the fixing piece 410 of the anchor pin 400 is inserted and fixed into the ground G, even if the first mesh 300a is bound and fixed using the first ring 421, the second ring 422 As it has a detachable structure with the first ring 421, the second ring 422 is first fastened to the second net body 300b, and then the fitting protrusion 425 is inserted into the groove of the fitting part 424 Work efficiency can be improved by fitting 424a, and the direction of the second ring 422 can be flexibly adjusted to face the twisted portion 402. At this time, the opening 422a of the second ring 422 may be formed toward the top or bottom.

Furthermore, in order to maintain a constant distance t between the first mesh body 300a and the second mesh body 300b, as shown in FIG. A fastening device 500 that is caught and fastened to the mesh body 300b may be provided.

At this time, one end and the other end of the fastening device 500 are bent to form a first fastening part 510 and a second fastening part 520, and the first fastening part 510 is a first mesh body. It is fastened and fixed to the twisted part 302 of (300a), and the second fastening part 520 is fastened and fixed to the twisted part 302 of the second mesh body 300b to form the first and second meshes 300a and 300b. It is possible to ensure a constant interval (t) between them.

On the other hand, the vegetation base material (GS) may be applied to the slope after being mixed so as to include soil in which masato and sewage sludge are mixed, a soil moisturizer, vegetable long fibers, and a solidifying agent. More specifically, it is preferable that the soil and sand and sewage sludge are blended in a volume ratio of 3.5: 5.5 to 5.5: 3.5, respectively. Masato is formed by weathering granite, so it is easy to drain due to its thick particle size and can provide favorable conditions for the germination of vegetation.

In addition, the soil moisturizer functions so that the vegetation substrate (GS) can continuously contain moisture, and forms a film containing bentonite as a main component on the surface to provide an environment for the growth of microorganisms. In addition, it improves the nutritional status of the soil by promoting the growth of microorganisms in the soil, and promotes the germination and growth of contaminated vegetation.

In general, vegetation substrates continuously repeat wetness and dryness depending on the season and rainfall, resulting in cracks and continuous loss of fine particles of vegetation substrates along the cracks. In the prior art, chemical fibers or biodegradable fibers were artificially produced in a wrinkled shape on vegetation substrates, but this resulted in economic inefficiency.

Therefore, the vegetation base material (GS) of the present invention has a major difference in that it contains vegetable long fibers in order to solve the problems caused by adding chemical fibers, metal long fibers, and other biodegradable fibers. The present invention uses vegetable long fibers such as silver grass or coconut palm to reduce environmental hazards, thereby suppressing loss due to cracks in vegetation substrates (GS) in the short term and preventing plant fiber decay in the long term. (GS) can be supplied with nutrients.

In particular, the solidifying agent is a mixture of cement and non-cement-based neutral solidifying agents, and the added solidifying agent is attached to vegetable long fibers to increase the binding with soil and slow down the corrosion of vegetable long fibers as much as possible. The reinforcing effect can be maintained as much as possible. Furthermore, the solidifying agent can minimize the generation of cracks and the loss of soil by strengthening the binding force of the vegetation base material even if contraction, drying, and wet expansion are continuously repeated according to sunshine and rainfall.

Table 1 below is an experimental example and a comparative example for deriving the ideal mixing ratio of the vegetation base material (GS) of the present invention. It is a value obtained by measuring the volume ratio (%) of each component of the vegetation base material (GS) and the soil hardness for the vegetation base material (GS).

Experimental Example 1 Experimental Example 2 Experimental Example 3 Experimental Example 4 Comparative Example 1 Comparative Example 2 Tosa
(%) 85 88 90 93 84 95 soil moisturizer
(%) 10 8 6 5 10 3 vegetable long fibers
(%) 1.5 1.5 One 0.5 2 0.5 solidifying agent
(%) 3.5 2.5 3 1.5 4 1.5 soil hardness
(mm) 22.8 20.4 22.7 18.4 23.3 17.8

For soil hardness, the average soil hardness index (mm) was measured by measuring the top, middle, and bottom of the slope 10 times each using a soil hardness meter. 18 to 23 mm was used as a reference range in which deviation did not occur.

Based on the experimental example in Table 1, the soil, soil moisturizer, vegetable long fiber, and solidifying agent of the present invention are 85 to 93% of soil mixed with masato and sewage sludge (masato: sludge, 4: 5 ratio), respectively , 5 to 10% of a soil humectant, 0.5 to 1.5% of vegetable long fibers, and 1.5 to 3.5% of a hardening agent including cement.

In addition, as the solidifying agent is a mixture of cement and cementless neutral solidifying agent, the neutral cementless solidifying agent is selected from fly ash, bottom ash, paper ash, anhydrous gypsum, chemical gypsum and blast furnace slag fine powder. may contain at least one.

The neutral solidifying agents include a large amount of CaO (calcium oxide), MgO (magnesium oxide) or Na2O (sodium oxide) to neutralize the pH of the cement. Therefore, when a neutral solidifying agent in an appropriate range is mixed, the vegetation substrate can be maintained in a neutralized state of pH 8.0 or less, which has the advantage of facilitating vegetation growth. In addition, when a neutral solidifying agent in an appropriate range is mixed, a predetermined hardness is obtained. While being secured and preventing loss of soil, a large amount of micropores are formed by evaporation of water, so that space for respiration and growth of vegetation roots can be provided.

Table 2 below is an experimental example and a comparative example for deriving the ideal mixing ratio of cementless neutral solidifying agent (kg) mixed with the vegetation base material (GS) of the total 1m ³ volume of the present invention, vegetation base material (GS) The volume ratio of was tested based on soil 85%, soil moisturizer 10%, vegetable long fiber 1.5%, and solidifying agent 3.5%, and the neutral solidifying agent was a mixture of fly ash and blast furnace slag fine powder at 50 wt% based on the weight ratio, and the germination rate It was measured by sowing in October based on field grass.

Comparative Example 1 Experimental Example 1 Experimental Example 2 Comparative Example 2 Comparative Example 3 Comparative Example 4 neutral solidifying agent
(kg) 0.1 0.3 0.5 0.7 1.0 1.5 germination rate
(%) 65 75 60 5 0 0 pH 8.2 8.0 7.9 7.8 7.5 7.3

pH 6.0 to 8.0, which is a favorable condition for the germination of vegetation, was set to a preferred acidity level, and when the relative ratio of the neutral solidifying agent increases, the vegetation base material (GS) is neutralized as a whole and at the same time a large amount of micropores can be formed, which is advantageous for germination. While the conditions were established, it was confirmed that if the ratio of the neutral solidifying agent was excessively increased, the soil hardness was increased, so that the germination of vegetation was relatively unfavorable.

Therefore, the non-cement-based neutral solidifying agent is preferably blended in an amount of 0.3 to 0.5 kg based on a volume of 1 m 3 of vegetation base material (GS).

Hereinafter, a greening method having a stabilized vegetation layer of the present invention will be described with reference to FIG. 9 . As shown in FIG. 9, the greening method having a stabilized vegetation layer of the present invention may include a rock bolt embedding step (S10), a rockfall prevention network installation step (S30), and a vegetation layer forming step (S40).

First, the rock bolt embedment step (S10) is a step of stabilizing the ground (G) by burying a plurality of rock bolts 100 on a slope at predetermined intervals in an installation hole previously drilled in the ground. At this time, by inserting the lock bolt 100 into a pre-drilled hole in the ground G and then injecting a grouting material, the rock bolt 100 can be fixed to the ground G and the slope can be stabilized at the same time.

Subsequently, prior to the fall prevention net installation step (S30), a surface layer cleaning step (S20) of arranging the surface layer of the slope may be additionally performed. The surface layer preparation step (S20) is a step of arranging in advance fallen leaves or large-sized sand or gravel that reduce the adhesion between the slope and the vegetation base material (GS).

The step of installing the anti-fallfall net (S30) performed thereafter is a step of installing the anti-fallfall net 300 so that a filling space (S) having a predetermined thickness is provided from the slope. At this time, it is preferable that the fallfall prevention net 300 has sufficient tensile strength to effectively resist the earth pressure acting on the slope, and the fallfall prevention net 300 forms the vegetation base layer 600 (GS). ) plays a role in improving the attachment performance of the vegetation substrate (GS) so that the loss of soil is minimized.

In the next step of forming the vegetation-based layer (S40), the vegetation-based layer (600) is formed by applying the vegetation-based material (GS) so that the filling space (S) formed by the falloff prevention net (300) is filled. am. As the vegetation base material can be formed thickly in the filling space (S) secured by the fallfall prevention net 300, the growth of plants can be achieved smoothly, and the vegetation base layer 600 is formed in the fallfall prevention net 300. Since the attachment performance is secured by being reinforced by the above, scour and loss of the vegetation-based layer 600 can be effectively prevented even if the vegetation-based layer 600 is formed to a predetermined thickness.

In addition, the above-described rockfall prevention net installation step (S30) is performed including the first net installation step (S31), the first net fixing step (S32) and the second net installation step (S33) as shown in FIG. It can be.

The first net body providing step (S31) is a step of disposing the first net body 300a on the outside of the slope, and the first net body 300a is partially pressed and fixed by the pressure plate 110 of the lock bolt 100. can

Next, the first mesh fixing step (S32) is a step of homogeneously fixing the first mesh 300a to the slope using the anchor pin 400, and the anchor pin 400 is ground (G) on one side A fixing piece 410 is formed so as to be inserted into and fixed, and a ring-shaped locking piece 420 may be formed on the other side so that the fall prevention net 300 is locked and fixed.

In the subsequent step of providing the second mesh (S33), the second mesh (300b) is spaced apart from the outside of the first mesh (300a) by a predetermined distance to form the first mesh (300a) and the second mesh (300b). This is a step of forming a filling space (S) therebetween.

At this time, the first and second rings 421 and 422 are spaced apart from the anchor pin 400 by the distance t to form a predetermined distance t between the first and second meshes 300a and 300b. It may be integrally formed or provided with a separate fastening device 500. Of course, the filling space (S) can be formed by utilizing the anchor pin 400 and the fastening device 500 in combination.

The greening structure and the greening method having a stabilized vegetation layer according to the present invention described above can be modified in other specific forms by those skilled in the art without changing the technical spirit or essential characteristics of the present invention. It will be appreciated that it can be implemented.

Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting, and the scope of the present invention is indicated by the claims to be described later rather than the foregoing detailed description, and the meaning and meaning of the claims All changes or modified forms derived from the scope and equivalent concept should be construed as being included in the scope of the present invention.

G: Ground GS: Vegetation infrastructure
100: rock bolt 300: fall prevention net
300a: first mesh 300b: second mesh
301: steel wire 302: twisted portion
310: lattice network 400: anchor pin
410: fixed side 420: jammed side
421: first ring 422: second ring
500: fastening device 510: first fastening part
520: second fastening part 600: vegetation base layer

Claims (11)

A plurality of rock bolts 100 are buried on the slope at predetermined intervals to stabilize the ground (G), and the fall prevention net 300 provided on the slope has four adjacent steel wires 301 alternately crossed on one side and the other. A first mesh body 300a having a plurality of lattice nets 310 having twisted parts 302 formed thereon, having the same structure as the first net body 300a and being spaced apart from each other on the outside of the first net body 300a. It includes a second net body (300b) forming a filling space (S) having a predetermined thickness therebetween, and a plurality of anchor pins (400) are provided to fix the fall prevention net (300). ) has a fixing piece 410 formed on one side to be inserted and fixed into the ground G, and a locking piece 420 formed on the other side so that the fall prevention net 300 is locked and fixed. A first ring 421 bent to be fixed to the twisted part 302 of the mesh 300a, and spaced apart from the first ring 421 in the longitudinal direction, and the twisted part 302 of the second mesh 300b ), but the first and second rings 421 and 422 are formed separately so that the fitting protrusion 425 is formed at the upper end of the first ring 421. formed, and a fitting portion 424 having a groove portion 424a into which the fitting protrusion 425 is fitted is formed on the lower side of the second ring 422, and is coupled in a mutually fitting manner, thereby forming the second ring 422. The direction can be flexibly adjusted so that the direction is toward the twisted portion 402, the opening portion 421a of the first ring 421 faces downward, and the opening portion 422a of the second ring 422 faces upward. A slope greening structure having a stabilized vegetation-based layer, characterized in that the vegetation-based material (GS) is applied to fill the filling space (S) to form a vegetation-based layer (600) with a predetermined thickness.
delete delete delete delete delete A plurality of rock bolts 100 buried in the slope at predetermined intervals to stabilize the ground (G); A rockfall prevention network 300 forming a filling space S having a predetermined thickness from the slope; A plurality of anchor pins 400 having a fixing piece 410 formed on one side to be inserted and fixed into the ground (G) and a ring-shaped locking piece 420 formed on the other side so that the fall prevention net 300 is caught and fixed; And a vegetation-based layer 600 formed to a predetermined thickness by applying a vegetation-based material (GS) so that the filling space (S) is filled.
The vegetation base material (GS) is a volume ratio, 85 to 93% soil mixed with masato and sewage sludge, 5 to 10% soil moisturizer, 0.5 to 1.5% vegetable long fiber, and 1.5 to 3.5% including cement % of a solidifying agent,
The solidifying agent is a mixture of cement and a neutral cementless solidifying agent, and the cementless neutral solidifying agent is at least one selected from fly ash, bottom ash, paper ash, anhydrous gypsum, chemical gypsum, and blast furnace slag fine powder. Including,
The slope greening structure having a stabilized vegetation base layer, characterized in that 0.3 to 0.5 kg of the cementless neutral solidifying agent is formulated based on the vegetation base material (GS) of volume 1㎥. delete delete delete delete

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