KR101566359B1

KR101566359B1 - Ecological restoration method using the reinforced geotextile

Info

Publication number: KR101566359B1
Application number: KR1020150062634A
Authority: KR
Inventors: 고정현
Original assignee: 에코앤지오 주식회사
Priority date: 2015-05-04
Filing date: 2015-05-04
Publication date: 2015-11-05

Abstract

The present invention relates to a method of stabilizing a vegetation including a slope and restoring vegetation, comprising the steps of: a) inserting and fixing a plurality of reinforcements made of reinforcing nails or anchors at predetermined intervals on a ground sheet; A second step of forming a fiber-reinforced soil layer mixed with sandy soil or local soil, crushed stone, short fiber and heavy fiber on the paper sheet; A third step of providing a net-shaped protective net on the surface of the fiber reinforced soil layer; And a fourth step of forming a vegetation-based material layer containing plant seeds on the protective net.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ecological restoration method using a fiber-

The present invention relates to an ecological restoration method for reinforcing vegetation on an unstable slope or the like, and more particularly, to a method for restoring vegetation after forming a fiber reinforced soil layer mixed with sandstone and medium- and short- A net-type protective net is installed and a vegetation-based material layer containing plant seeds is formed by a dry method using the same equipment, whereby a stable vegetation base is provided and the efficiency of the work is improved. It is about the construction method.

In general, the area of the problem of destroying natural landscapes and the environment due to erosion and collapse caused by summer rains and embankments due to civil engineering works, summer slopes in mountain slopes or canopies or hilly areas seen in various construction and development sites, Recording is essential to restore nature.

The natural vegetation-based condition of this artificial region is naturally soil and soil which are difficult for plants to grow, but the vegetation of the plant is somewhat possible, but it is difficult for the plants to grow because the soil layer is thin. Furthermore, the soil lacks nutrients, has little moisture, and is difficult for plants to grow. The slope has a possibility of erosion and collapse, and there is a problem that it can damage natural landscape.

On the other hand, in the case of greening on the slope, when the slope is gentle, it is applied to the thin vegetation-based re-installation method (less than 5 cm), and when the slope is urgent, (5 ~ 15 cm) to the surface. However, such a greening method is weak in strength, and there is a problem that the greening base is collapsed or eroded due to water or rainfall from the ground immediately after the installation.

Alternatively, an anchor pin and a landing pin may be installed on the slope, and a vinyl chloride-coated wire mesh may be laid out and then a vegetation-based material 5 to 15 cm thick may be attached. However, vegetation-based materials with a thickness of 5 to 15 cm have a limitation in supporting the growth of plants, and the vegetation-based material used is too hardened to cause the degradation and erosion of the ground.

In order to solve the above problems, there is a method in which reinforcing anchors having a length of about 1 m are installed on a paper sheet, and continuous fibers are mixed with a soil material such as sand. This is advantageous in that the effect of preventing spraying of the spraying material is increased and the reinforcing effect by the apparent adhesion of the continuous fibers is obtained. However, this method can not expect the reinforcement effect of the ground since the length of the anchor is short, and there is a limit that can not cope with the behavior of the ground such as arc breakage or wedge breakage.

Furthermore, Patent No. 10-1035264 ("Method of forming a vegetation glazing utilizing continuous fiber reinforced soil") developed by the inventor of the present invention improves the above-described technology, and uses a method of spraying continuous fibers with high- , There is a problem that a conveyor belt occupying a large area of work space is required at the time of construction, and when the continuous fiber is sprayed at a high pressure, the wind blows strongly when blown. In addition, there is a disadvantage in that the working radius is not wide and the continuous fibers must be moved according to the construction site.

Disclosure of Invention Technical Problem [8] The present invention has been made in order to overcome the above-described problems of the related art, and has the following objectives.

First, the reinforcing material such as reinforcing nail or the like is installed at a length (0.8 ~ 15.0 m) suitable for the shape of the paperboard to stably reinforce the paperboard.

Second, the present invention not only improves the price competitiveness of the fiber reinforced earth layer attached to the paperboard by including crushed stone in the quarry, but also prevents the breakage due to wind when using heavy and short fibers, Can be maximized.

Third, the present invention can stably restrain the vegetation-based material and secure the stabilization of the vegetation by using the vegetable net or the vinyl chloride-coated wire reinforcing material correspondingly to the inclination of the fiber reinforced soil layer.

Fourth, the present invention can improve the efficiency of the work by forming the vegetation-based material layer containing the seed by using the dry method using the mechanical equipment used in the preceding process as it is.

According to an aspect of the present invention, there is provided a method of stabilizing a vegetation including a slope and restoring vegetation, the method comprising: a first step of inserting and fixing a plurality of reinforcements made of reinforcing nails or anchors at predetermined intervals on a ground sheet; A second step of forming a fiber-reinforced soil layer mixed with sandy soil or local soil, crushed stone, short fiber and heavy fiber on the paper sheet; A third step of providing a net-shaped protective net on the surface of the fiber reinforced soil layer; And a fourth step of forming a vegetation-based material layer containing seeds of plants on the protection net. The present invention also provides a method for restoration using the fiber-reinforced soil.

According to the present invention, the following effects are expected.

First, the stabilization of the paper sheet can be achieved by providing a stiffener having a predetermined length or more in conformity with the shape of the paper sheet such as an unstable slope. The reinforcing material may be composed of a plate-shaped head portion and a body portion to be inserted into the paper sheet. The head portion and the body portion protrude above the surface of the paper sheet to increase the frictional force with the fibers mixed in the fiber- It is possible to prevent sliding phenomenon or collapse of the ground by integrating the reinforcing soil layer.

Second, it can increase price competitiveness including crushed stone from quarry in fiber reinforced soil layer installed on the paperboard, and can prevent the wind-induced breakage when using heavy and short fibers, thereby maximizing construction efficiency. have.

In other words, it is possible to secure price competitiveness by using the conventionally used sandy soil or only the local soil in the fiber-reinforced soil layer together with the stones that are necessarily generated in the quarry, and the continuous fiber used in the existing fiber- The construction efficiency drops to less than 50% when applied in the area. By using the middle fiber and the short fiber, the problem can be solved and the economical efficiency can be improved.

Third, according to the slope of the slope such as the slope, the net of the plant material or the stiffener of the vinyl chloride-coated wire mesh can be used correspondingly, so that the stable settlement of the vegetation-based material layer and the planting can be promoted.

Fourth, the mechanical equipment used to form the fiber reinforced soil layer is used as it is, and the dry - method is used to form the vegetation - based material layer.

In addition, when forming the vegetation-based material layer, using recycled compost and vegetable-based fiber as the main material, it can reduce material cost and achieve environment-friendly effect.

1 is a process diagram of an ecological restoration method using a fiber-reinforced soil according to the present invention.
2 is a sectional view showing an embodiment of the ecological restoration method using the fiber reinforced soil according to the present invention.
3A shows another embodiment of the ecological restoration method using the fiber reinforced soil according to the present invention.
Fig. 3B is an enlarged view of a portion A of Fig. 3A of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a process diagram of an ecological restoration method using a fiber-reinforced soil according to the present invention, and FIG. 2 is a sectional view showing an embodiment of an ecological restoration method using a fiber-reinforced soil according to the present invention.

3A shows another embodiment of the ecological restoration method using the fiber reinforced soil according to the present invention, and FIG. 3B is an enlarged view of a portion A of FIG. 3A of the present invention.

The present invention relates to an ecological restoration method for reinforcing a ground (10) such as an undeveloped slope caused by various development projects, an unstable slope, and a concrete-finished mud soil, and then forming a vegetation base thereon.

Specifically, the present invention relates to a method of stabilizing a vegetation including a slope and simultaneously restoring vegetation, comprising the steps of: (1) inserting and fixing a plurality of reinforcing members 20 made of reinforcing nails or anchors at predetermined intervals on a base sheet 10, step; A second step of forming a fibrous reinforcing earth layer 30 in which sandy soil or local soil, crushed stone, short fiber and heavy fiber are mixed on the paperboard 10; A third step of providing a net-shaped protective net 40 on the surface of the fiber-reinforced earth layer 30; And a fourth step of forming a vegetation-based material layer 50 containing plant seeds on the protection net 40.

The first step includes a step of installing a plurality of stiffeners 20 for each planned position on the paperboard 10.

The paperboard (10) refers to a rock cutter, a general cut slope, a resilient paper, a buried land, a moat paper, etc., artificially generated due to indiscriminate construction work and various development activities.

The stiffener 20 is installed to reinforce the base sheet 10 and may be constituted by reinforcing nails having a length of 1 m or more used in the rock bolt method or the soil nail method according to the structural calculation or in the case where the nailing method is not required, And can be inserted and installed according to the shape of the paper sheet 10 including the slope and the like as an anchor. For example, when the paper sheet 10 is a sloped surface, reinforcement nails may be provided with a reinforcing nail having a length of 0.8 to 15 m to correspond to the slope shape.

The reinforcing member 20 is composed of a body portion 20a inserted into the base sheet 10 and a head portion 20b connected to a relatively large cross section at one end of the body portion 20a, A part of the portion 20a may be inserted and fixed so as to partially protrude above the paper cloth 10. In particular, in FIG. 2, the stiffener 20 includes a plate-shaped head portion 20b and a bar-shaped body portion 20a. However, the present invention is not limited to this and may be manufactured in various forms. That is, the reinforcing member 20 can be installed such that a head part 20b and a part of the body part 20a protrude from the surface of the paper cloth 10, which is a problem of entanglement with the fiber material mixed in the fiber- Thereby increasing the frictional force and improving the integrity of the fiber reinforced soil and the paper sheet 10, thereby suppressing sliding or collapse of the ground.

The second step consists of forming a fiber-reinforced soil layer 30 on the reinforced base sheet 10, wherein the fiber-reinforced soil layer 30 is composed of sandy soil or local soil, crushed stone, medium fiber and staple fiber. This fiber-reinforced soil layer 30 secures an effective soil foundation (more than 20 cm) necessary for plant growth, thereby expanding the permanent vegetation base.

In the second step, as shown in FIG. 3A, sandy soil or local soil, crushed stone, and short fibers are fed into the mixing device 60, mixed and transported to the base re-loading device 70, As shown in FIG. 3B, the middle fiber fed from the middle fiber feeding device 90 is separately injected into the middle of the fabric hose 10, Process. In other words, the fiber reinforced soil layer 30 is formed on the ground sheet 10 such as a slope through friction between the sandy soil or the local soil and the crushed stones while spraying the heavy fibers and the staple fibers at a high pressure.

The second step of the present invention is that the crushed stone and the medium and short fibers are mixed in the fiber-reinforced soil layer 30 and that the mixture is fed directly to the base re-inserter 70 in the mixing device 60 without using the conveyor belt Transferring is a noticeable difference from existing technology.

Crushed stone means stone which is inevitably generated in a quarry, and plays a role of replacing a part of relatively expensive sandy soil, thereby securing price competitiveness and forming a stable structure.

The middle fibers and the staple fibers are mixed in order to overcome the phenomenon of continuous breaking by the strong wind when the continuous fibers are used. Such fibers and staple fibers can be used as a by-product of coir nets which are woven with the husks of nose corners, yarns of various materials such as yarn, rice straw, and the like, thereby improving economical efficiency and advantageous from the viewpoint of resource recycling. Heavy fibers and short fibers composed of such materials and the like do not interfere with the growth of the plant roots, but can be intertwined with the roots to further strengthen the reinforcing effect of the soil. In addition, the medium fibers and the staple fibers dramatically increase the apparent adhesion that sand such as sandy soil can not possess, thereby making the fiber reinforced soil layer 30 a soft and hard soil structure.

In the present invention, it is preferable to ensure the uniform shear strength and the erosion resistance by mixing 2.0 to 4.0 kg of the amount of the middle fiber and the short fiber with respect to 1 m 3 of the soil material composed of sand soil or local soil and crushed stone.

The head portion 20b and the body portion 20a of the reinforcing member 20 protruding from the upper side of the base sheet 10 are tangled with the middle and short fibers to form a stronger adhesion force and adhesive force, Thereby preventing the sliding member 30 from sliding or collapsing. In addition, the head portion 20b of the reinforcing member 20 can be formed in a geometrical shape suitable for the shape of a slope or the like, thereby further enhancing the adhesion and adhesion.

The third step is to form a fiber reinforced asphalt layer 30 in the second stage and then install a net-shaped protection net 40 on the fiber reinforced soil layer 30.

The protection net (40) is configured in a net shape so as to stably settle the vegetation-based material layer (50) and prevent the vegetation from falling off by rainfall and wind, thereby stabilizing the stability of the planting.

In addition, the protective net 40 according to the present invention may use a heterogeneous material according to the inclination of the slope when the ground sheet 10 is formed as a slope. For example, the protection net 40 may be made of vegetable net in a gentle section with a slope of 1: 1 or more, and a wire net made of vinyl chloride or similar material when the slope is more than 1: 1.

The vegetable net can be made of coconut fiber, jute, and natural cotton. It is a natural woven net, which enhances the adhesion and makes it easy to settle when the vegetation base is formed on it. On the other hand, after a certain period of time, it is corroded because it is a vegetable material. If it is corroded, it is converted into organic material and used as a nutrient source of plants. In addition, when the initial plant is activated, the roots of the plant tangled with the vegetable net form a strong mattress, which can greatly contribute to slope stability. In addition, since the vegetable net is closely attached along the texture of the rugged surface of the fiber-reinforced earth layer 30 attached thereunder, the void can be minimized.

In the case of a wire mesh coated with vinyl chloride, it is preferable to increase the thickness of the iron core to increase the supporting force, the fracture load, and the tensile strength.

The fourth step consists of forming a vegetation-based material layer 50 including seeds on the net-shaped protective net 40, wherein the vegetation-based material layer 50 comprises forest waste and growth assistant composition.

The vegetation-based material layer 50 is prepared by injecting the forest waste and the growth auxiliary material composition into the mixing apparatus 60 used in the second step, mixing and transporting the same to the base re-installing unit 70, And a dry process method in which the water is sprayed onto the protection net 40.

In this case, the vegetation-based material layer 50 is installed on the protection net 40 at 2.0 to 3.0 cm, and 5 to 30% by weight of organic vegetable fibers, 10 to 20% by weight of peat moss, ) 10 to 20% by weight, purified water sludge 10 to 20% by weight, and planting re-mixed compost 10 to 40% by weight. The composition of such a composition is adapted to the dry method and enables continuous and effective feeding of the nutrients to the plant in the medium to long term as well as early growth of the plant.

In addition, the vegetation-based material layer 50 may further contain 0.1-5.0% by weight of a chemical fertilizer and 0.1-5.0% by weight of a polymer resin in addition to the forest waste and the growth auxiliary material composition, thereby further promoting plant growth and stabilizing the ground have.

At this time, the mixture of the forest waste and the growth auxiliary material, as well as the chemical fertilizer and the polymer resin are mixed and mixed in the mixing device 60.

In other words, the vegetation-based material layer (50) uses plant material as a main material. It is obtained by pulverizing tree roots and twigs, which are tree waste generated by the logging process in the forest, and composting the mixture of the auxiliary vegetation-based material and the binding agent &Lt; / RTI > This allows the recycling of plant resources to be discarded as waste. In addition, the germination of the seeds contained in the soil contained in the forest waste can be expected, so that eco-friendly ecological restoration can be achieved. The vegetation-based material layer 50 may include a variety of plant seeds to form a landscape including various plants.

However, when wood waste is pulverized and used immediately, the wood can be directly fed into the vegetation-based material layer 50. Since the wood has a very high carbon / nitrogen ratio (C / N ratio) of about 600 to 1,200 When such woody material is put into the green vegetation-based material layer 50 as it is, it temporarily absorbs the nitrogen content temporarily, thereby causing the nitrogen starvation phenomenon by deficiency of the nitrogen content of the plant. In other words, it can act as an inhibitory factor for plant growth. It is desirable to compost it and remove the harmful elements.

Meanwhile, in the fourth step, the vegetation-based material layer 50 is formed without using the mechanical equipment used in forming the fiber-reinforced earth layer 30 in the second step, thereby allowing the time And the cost can be saved. Thus, by forming the vegetation-based material layer 50 by the dry method using the same mechanical equipment, close adhesion with the fiber reinforced soil layer 30 can be exhibited. In detail, the moisture content of the fiber-reinforced soil layer 30 is lowered after 1 to 3 hours from the injection of the high pressure, so that the fiber-reinforced soil layer 30 remains in the form of sand. The vegetation-based material layer 50, which is sprayed by the dry method, The adhesion is maximized.

Here, the dry method is a process of pneumatically spraying the shotcrete using the equipment for casting the shotcrete in the civil engineering work, and the vegetation-based material layer 50 is formed. The main equipment includes a generator (G) for supplying electric power, an air compressor (80) for supplying compressed air, a mixing device (60) for mixing vegetation based material (aka Ariba), a crane, Based reloading unit 70 and the like.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

Accordingly, the claims of the present invention include modifications and variations that fall within the true scope of the present invention.

H: Mounting hose
G: Generator
10: Paperboard
20: Stiffener
20a:
20b:
30: fiber reinforced soil layer
40: Protection net
50: Vegetation-based layer
60: mixing device
70: Base reloading machine
80: air compressor
90: Medium fiber feeder

Claims

In the method of restoring the vegetation while stabilizing the ground (10) including the slope,
A first step of inserting and fixing a plurality of reinforcing members 20 made of reinforcing nails or anchors at predetermined intervals on the base sheet 10;
A second step of forming a fiber-reinforced soil layer 30 in which crushed stones, short fibers, and heavy fibers generated in sandy soil or local soil or quarry are mixed on the paperboard 10;
A third step of providing a net-shaped protective net 40 on the surface of the fiber-reinforced earth layer 30; And
A fourth step of forming a vegetation-based material layer (50) containing plant seeds on the protection net (40);
, &Lt; / RTI >
In the second step, the sandstone, the local soil, the crushed stones generated in the quarry, and the short fibers are mixed and fed to the mixer 60, and the mixture is transferred to the base re-mixer 70. By the high pressure by the air compressor 80 The fibers are moved to the attaching hose H while the middle fibers fed from the middle fiber feeding device 90 are separately injected in the middle and are sprayed while being attached to the upper side of the cloth 10,
In the fourth step, the vegetation-based material layer 50 is installed on the protection net 40 at 2.0 to 3.0 cm, and 5 to 30% by weight of organic vegetable fiber, 10 to 20% by weight of peat moss, Further comprising a growth auxiliary composition composed of 10 to 20% by weight of peat, 10 to 20% by weight of purified water sludge, and 10 to 40% by weight of plant-generated re-mixing compost, wherein the mixing apparatus used in the second step 60 and a dry process method in which the forest waste and the growth auxiliary composition are mixed and transported to the base re-installer 70 and then mounted on the protection net 40 by the high-pressure injection type by the air compressor 80 Ecological restoration method using fiber reinforced soil.

The method of claim 1,
The reinforcing member (20)
A body part 20a inserted into the base sheet 10 and a head part 20b connected to a relatively large cross section at one end of the body part 20a,
Wherein a part of the head part (20b) and the body part (20a) are inserted and fixed so as to partially protrude above the paper curtain (10).

The method of claim 1,
The fiber reinforced soil layer (30)
Wherein the short fiber and the medium fiber are mixed in an amount of 2.0 to 4.0 kg per 1 m 3 of the soil material mixed with the crushed stone in the sandy soil or the local soil.

The method of claim 1,
The protection net (40) of the third step,
A vegetable net or a vinyl chloride-coated wire mesh.

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The method of claim 1,
Wherein the vegetation-based material layer (50) further comprises 0.1 to 5.0% by weight of a chemical fertilizer and 0.1 to 5.0% by weight of a polymer resin.

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