JP2009281094A - Method for forming plant growth base on slope, and equipment for use in the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To form a plant growth base on a slope even if the slope is relatively high. <P>SOLUTION: This method for forming the plant growth base on the slope includes: a step of producing a plant growth base material by adding an aggregate agent and compressed air to a fluid, containing soil, in an intermediate section of a pipe, while conveying the fluid via the pipe by applying pressure to the fluid by means of a pump; and a step of discharging the plant growth base material onto the slope from the pipe by the compressed air. The fluid can contain crushed pieces of the plant, water, and a clay mineral which does not expand even in the addition of the water, in addition to the soil. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for forming a plant growth base on a slope and an apparatus used therefor.

In order to greenen and protect the slope, a plant growth base is formed on the slope, and plants are grown on the plant growth base. Conventionally, when forming the plant growth base on the slope, first, one end of the tube is placed on the ground located below the slope, and the other end of the tube is placed on the slope. Deploy. Next, soil and agglomerates are mixed to produce a plant growth base material, and then the plant growth base material is supplied to the tube from the one end while the plant growth base material is formed at the one end. Compressed air is added to release the plant growth base material from the other end of the tube to the slope (see Patent Document 1).
JP 2004-100318 A

  By mixing the soil and the aggregate agent, clay particles contained in the soil aggregate to form a aggregate structure composed of a plurality of aggregates. The plant growth base material has large voids through which air and water pass between the aggregates, and is excellent in air permeability and drainage. Moreover, the plant growth base material has a small gap for storing water between the clay particles constituting the aggregate, and is excellent in water retention. For this reason, the plant growth base material is suitable for the growth of the plant.

  By the way, when the height of the slope is higher, the pipe must be lengthened to allow the other end of the pipe to reach a higher position on the slope. However, when the tube is long, when the plant growth base material is released from the tube, the plant growth base material receives a large frictional force from the tube, and it is difficult to release the plant growth base material from the tube. It is. For this reason, the plant growth base cannot be formed on the slope.

  An object of the present invention is to enable a plant growth base to be formed on a slope even when the slope is higher.

  The present invention applies a pressure to a fluid containing at least one of soil and clay mineral by a pump and conveys the fluid through a pipe, while the aggregate and compressed air are added to the fluid at an intermediate portion of the pipe. To produce a plant growth base material, and the plant growth base material is discharged from the pipe to the slope by the compressed air. Thus, compared to the case where compressed air is added to the plant growth base material at one end of the tube and the plant growth base material is released from the tube, the plant growth is released when the plant growth base material is released from the tube. The frictional force that the base material receives from the tube is made small so that it is not difficult to release the plant growth base material from the tube even when the tube is long. Thereby, even when the height of the slope is higher, a plant growth base can be formed on the slope.

  According to the present invention, a method for forming a plant growth base on a slope includes applying a pressure to a fluid containing soil by a pump and transporting the fluid through a pipe, while the fluid is at an intermediate portion of the pipe. Adding a flocculating agent and compressed air to produce a plant growth base material, and releasing the plant growth base material from the tube to the slope by the compressed air.

  In the intermediate part of the tube, the aggregate and the compressed air are added to the fluid to produce the plant growth base material, and the plant growth base material is discharged from the tube by the compressed air. Compared to the case where the plant growth base material is released from the tube by adding compressed air to the plant growth base material at one end of the plant growth base material, the plant growth base material is Even when the frictional force received from the tube is small and the tube is long, it is not difficult to release the plant growth base material from the tube. For this reason, even when the height of the slope is higher, a plant growth base can be formed on the slope.

  In addition to the soil, the fluid may include plant fragments and water. In addition to the soil, the fluid may include water and a clay mineral that does not expand even when water is added.

In addition to the soil, the fluid may include plant fragments, water, and clay minerals that do not expand when water is added, and the total of the soil and plant fragments is about 1 in total. per .0m ^3, wherein the soil is about 0.3 m ³ and about 0.7 m ^3, the water is about 0.1 m ³ and about 0.6 m ^3, the clay mineral is about 20kg to about 100kg The agglomerates are about 1 kg to about 6 kg.

  By the way, if the fluid does not contain the clay mineral, the fragment of the plant having a relatively large specific gravity sinks while the fluid is transported from the pump through the pipe, and the fragment of the plant May separate from the fluid. For this reason, there exists a possibility that the fragment of the said plant cannot be conveyed. On the other hand, when the fluid contains the clay mineral, the fluid has a viscosity, and the viscous resistance of the fluid can prevent the plant fragment from sinking. It is possible to prevent the crushed pieces from separating from the fluid. For this reason, the said fluid can be conveyed, without separating the fragment of the said plant from this fluid.

  Another method of forming a plant growth base on the slope according to the present invention is to apply pressure by a pump to a fluid containing clay mineral that does not expand even when water is added, and convey the fluid through a pipe. Adding a flocculating agent and compressed air to the fluid in the middle of the tube to produce a plant growth base material, and discharging the plant growth base material from the tube to the slope by the compressed air. including.

The fluid includes plant fragments and water in addition to the clay mineral, and the clay mineral is about 0.3 m for a total of about 1.0 m ³ of the clay mineral and the plant fragments. ^{3 to} about 0.7 m ³ , the water is about 0.1 m ^{3 to} about 0.6 m ³ , and the aggregate is about 1 kg to about 6 kg.

  An apparatus for forming a plant growth base on a slope according to the present invention includes a pump and a pipe connected to the pump, and the pipe is at least one first connection port provided in an intermediate portion thereof. At least one first connection port to which a first supply pipe for supplying compressed air to the pipe is connected, and a second connection port provided in the intermediate portion at a distance from the first connection port. And a second connection port to which a second supply pipe for supplying the aggregate is connected to the pipe.

  According to the present invention, a plant growth base material is produced by adding a flocculating agent and compressed air to a fluid containing at least one of soil and clay mineral in the middle part of the pipe, and the plant growth base material is formed into the compressed air. In order to release the plant growth base material from the pipe to the slope, the plant growth base material is released from the pipe by adding compressed air to the plant growth base material at one end of the pipe. When the plant growth base material is released from the tube, the frictional force that the plant growth base material receives from the tube is small. Even when the tube is long, it is not difficult to release the plant growth base material from the tube. For this reason, even when the height of the slope is higher, a plant growth base can be formed on the slope.

  As shown in FIG. 1, in order to greenen and protect the slope 10, a plant growth base 12 is formed on the slope, and plants are grown on the plant growth base.

  When the plant growth base 12 is formed on the slope 10, first, a container 14 such as a hopper is disposed on the ground 13 located below the slope 10. Next, the pump 16 is disposed on the ground 13 at a distance from the container 14, and one end 20 of the pipe 18 is connected to the pump 16. The pump 16 is a piston pump.

  The pipe 18 has at least one first connection port 26 provided at an intermediate portion 22 to which a first supply pipe 24 that supplies compressed air to the pipe 18 is connected, and is spaced from the first connection port. It has the 2nd connection port 30 with which the 2nd supply pipe | tube 28 which supplies a aggregate to the pipe | tube 18 was provided in the intermediate part 22. The first connection port 26 is spaced from the second connection port 30 toward the one end 20 side of the tube 18. The interval is, for example, about 20 cm to about 1 m, but may be shorter than about 20 cm or longer than about 1 m.

  Next, the compressor 34 and the aggregate supply device 36 are disposed on the ground 13 at a distance from the pipe 18. Thereafter, one end of the first supply pipe 24 is connected to the compressor 34, the other end of the first supply pipe 24 is connected to the first connection port 26 of the pipe 18, and one end of the second supply pipe 28 is aggregated. The other end of the second supply pipe 28 is connected to the second connection port 30 of the pipe 18, and one end of a third supply pipe 38 that supplies compressed air to the second supply pipe 28 is connected to the agent supply device 36. Connected to the compressor 34, the other end of the third supply pipe 38 is connected to the second supply pipe 28. Thereafter, the other end 32 of the tube 18 is placed on the slope 10. The compressor 34 generates compressed air, and the aggregate supply device 36 contains the aggregate.

  In the example shown in FIG. 1, two first connection ports 26 are provided in the intermediate portion 22 of the pipe 18, and the first supply pipe 24 is connected to each first connection port 26. In order to cause the compressed air supplied from the first supply pipe 24 to the pipe 18 to generate an air flow from the intermediate portion 22 of the pipe 18 toward the other end portion 32, the other end portion of the first supply pipe 24 and The angle formed by the intermediate portion 22 of the tube 18 is an acute angle. The first connection port 26 may be one instead of the example shown in FIG.

  The height of the slope 10 is relatively high and the tube 18 is relatively long. The length from the one end 20 of the tube 18 to the intermediate portion 22 is about 10 m to about 250 m, and the length from the intermediate portion 22 to the other end 32 of the tube 18 is about 10 m to about 50 m. The length from one end 20 of the tube 18 to the intermediate portion 22 and the length from the intermediate portion 22 to the other end 32 of the tube 18 are the distance from the container 14 to the slope 10, the height of the slope 10, It can be arbitrarily changed according to the inclination angle of the surface 10 or the like. The intermediate portion 22 of the tube 18 may be between the one end portion 20 and the other end portion 32 and may be in the center of the tube 18 or a position other than the center of the tube 18, that is, the center of the tube 18. May be in a position separated from the one end 20 side or the other end 32 side.

  After the other end 32 of the pipe 18 is placed on the slope 10, the soil, plant fragments, water, clay mineral that does not expand when water is added, and the bonding agent are mixed in the container 14. And stir. Thereby, the fluid 40 is produced | generated. Next, the fluid 40 is conveyed by a dump, a belt conveyor or the like (not shown), and the fluid is supplied to the pump 16.

The soil consists of locally generated soil obtained from the ground excavated to form the slope 10. Generally, the locally generated soil includes clay particles, and the mass ratio of the clay particles to the locally generated soil is about 20% to about 30%. The crushed pieces of the plant consist of tree trunks, foliage or root pieces, grass pieces or a mixture thereof, and are unripe. The clay mineral is a clay mineral mainly composed of fine alumina silicate, such as Kibushi clay. In the example shown in FIG. 2, the soil is about 0.5 m ³ and the plant fragment is about 0.5 m ³ for a total of about 1.0 m ³ of the soil and the plant fragment. The clay mineral is about 30 kg, the binder is about 4 kg, and the water is about 0.2 m ³ .

  After the fluid 40 is supplied to the pump 16, the fluid 40 is pressurized by the pump, and the fluid is conveyed from the one end 20 to the intermediate portion 22 via the pipe 18. A plant growth base material 42 is produced by adding the aggregate and the compressed air to 40. At this time, the compressed air is supplied to the pipe 18 via the first supply pipe 24 and supplied to the second supply pipe 28 via the third supply pipe 38, and at the same time, together with the compressed air supplied to the second supply pipe 28. The aggregate is supplied to the pipe 18 via the second supply pipe 28.

By adding the aggregate and the compressed air to the fluid 40, the fluid 40 and the aggregate are stirred, and are contained in the soil and the clay mineral due to the aggregation action of the aggregate. Clay particles aggregate to form aggregates. For this reason, the plant growth base material 42 has a aggregate structure. In the example shown in FIG. 2, the aggregate is about 3 kg for a total of about 1.0 m ³ of the soil and the crushed pieces of the plant.

  After the plant growth base material 42 is generated, the plant growth base material 42 is discharged from the other end 32 of the pipe 18 to the slope 10 by the compressed air. Thereby, the plant growth base 12 is formed on the slope 10.

  From the intermediate part 22 of the pipe 18, the aggregate and the compressed air are added to the fluid 40 to produce a plant growth base material 42, and the plant growth base material is released from the pipe 18 by the compressed air. Compared to the conventional case where compressed air is added to the plant growth base material at one end of the tube to release the plant growth base material from the tube, the plant growth base is released when the plant growth base material is released from the tube. The frictional force that the material receives from the tube is small. For this reason, even when the pipe 18 is relatively long, the plant growth base 12 can be formed on the slope 10 without the release of the plant growth base material 42 from the pipe 18 by the frictional force.

  By the way, if the fluid 40 does not contain the clay mineral, the fragment of the plant having a relatively high specific gravity sinks while the fluid 40 is conveyed through the pipe 18 by the pump 16, and the fragment of the plant is sunk. May separate from the fluid 40. For this reason, there exists a possibility that the fragment of the said plant cannot be conveyed. On the other hand, when the fluid 40 contains the clay mineral, the fluid 40 has a viscosity, and the fragment of the plant can be prevented from sinking due to the viscous resistance of the fluid. It is possible to prevent the crushed pieces from separating from the fluid 40. For this reason, the fluid 40 can be conveyed without separating the crushed pieces of the plant from the fluid.

  If the clay mineral is made of a clay mineral that is expanded by adding water, such as bentonite mainly composed of montmorillonite, the clay mineral expands while the fluid 40 is conveyed by the pump 16 through the pipe 18. Then, the pipe 18 may be clogged, and the fluid 40 may not be conveyed. On the other hand, when the clay mineral is made of a clay mineral that does not expand even when water is added, the clay mineral does not expand and the tube 18 is not clogged, and the fluid 40 can be reliably conveyed.

  The locally generated soil contains seeds of plants that have grown in the place where the slope 10 is formed. For this reason, when the soil is the locally generated soil, the plant can be grown on the plant growth base 12, and the ecosystem destroyed by the formation of the slope 10 can be restored.

  The locally generated soil may be composed of topsoil or weathered soil existing under the topsoil. Each of the topsoil and the weathered soil contains clay particles and contributes to the formation of the aggregate structure of the plant growth base material 42. The soil may be a soil carried into a place where the slope 10 is formed, instead of the above-described example made of the locally generated soil.

  The plant fragment is intertwined with the aggregate and reinforces the plant growth base 12. For this reason, the plant growth base 12 is excellent in erosion resistance and stability, and the plant growth base 12 does not collapse or is washed away by rain. The plant fragment is preferably a fragment of a tree that has been cut to form the slope 10. Thereby, the felled tree can be effectively used without being discarded.

  The intermediate part 22 of the pipe 18 is made of a steel pipe. The portion between the one end portion 20 and the intermediate portion 22 of the pipe 18 may be made of a steel pipe, may be made of a flexible pipe member such as a hose, or the steel pipe and a flexible pipe connected thereto. It may consist of members. A portion between the intermediate portion 22 and the other end portion 32 of the tube 18 is made of a flexible tube member. The pump 16 may be another pump capable of conveying a fluid having viscosity, such as a squeeze pump, instead of the above example that is a piston pump.

In the example shown in FIG. 2, the soil is about 0.5 m ³ for a total of about 1.0 m ³ of the soil and the crushed pieces of the plant. Instead, the amount of the soil is about 0. Any amount in the range of ³ m ^{3 to} about 0.7 m ³ can be used. In this case, the amount of the fragment of the plant is about 1.0 m ³ minus the amount of the soil, that is, about 0.7 m ^{3 to} about 0.3 m ³ , and the clay mineral is about 20 kg to about 100 kg, the aggregate is about 1 kg to about 6 kg, and the water is about 0.1 m ^{3 to} about 0.6 m ³ .

  Instead of the above example including the soil, the crushed pieces of the plant, the water, and the clay mineral, the fluid 40 includes the soil, the crushed pieces of the plant, and the water. It can be free of clay minerals. In addition, the fluid 40 may include the soil, the water, and the clay mineral and may not include the plant fragment.

The plant growth base material 42 is replaced with the example shown in FIG. 3 including the soil, the crushed pieces of the plant, the clay mineral, the aggregate, the bonding agent, and the water. As shown in the above, the plant fragment, the clay mineral, the aggregate, the bonding agent, and the water can be included, and the soil can be excluded. Figure in the example shown in 3, per a total of about 1.0 m ³ of the clay mineral and fragments of the plant, crushed pieces of the plant is about 0.5 m ^3, the clay mineral is about 0.5 m ³ The aggregate is about 3 kg, the binder is about 4 kg, and the water is about 0.2 m ³ . In this case, the fluid 40 is produced by mixing and stirring the crushed pieces of the plant, the clay mineral, the bonding agent, and the water.

In the example shown in FIG. 3, the clay mineral is about 0.5 m ³ for a total of about 1.0 m ³ of the plant fragments and the clay mineral, but instead, the amount of the clay mineral is Any amount in the range of about 0.3 m ^{3 to} about 0.7 m ³ can be used. In this case, the amount of the fragment of the plant is about 1.0 m ³ minus the amount of the clay mineral, that is, about 0.7 m ^{3 to} about 0.3 m ³ , and the aggregate is about 1 kg. To about 6 kg, and the water is about 0.1 m ^{3 to} about 0.6 m ³ .

The schematic diagram of the apparatus which forms a plant growth base on the slope according to the present invention. The compounding example of the plant growth base material which concerns on 1st Example of this invention. The compounding example of the plant growth base material which concerns on 2nd Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Slope 12 Plant growth base 16 Pump 18 Pipe 22 Intermediate part 24 1st supply pipe 26 1st connection port 28 2nd supply pipe 30 2nd connection port 40 Fluid 42 Plant growth base material

Claims (7)

A method of forming a plant growth base on the slope,
While applying pressure to the fluid containing soil by a pump and transporting the fluid through the pipe,
Adding a flocculating agent and compressed air to the fluid in the middle of the tube to produce a plant growth base material;
A method of forming a plant growth base comprising releasing the plant growth base material from the tube to the slope by the compressed air.   The method for forming a plant growth base according to claim 1, wherein the fluid contains plant fragments and water in addition to the soil.   The method for forming a plant growth base according to claim 1, wherein the fluid includes water and a clay mineral that does not expand even when water is added, in addition to the soil. In addition to the soil, the fluid includes plant fragments, water, and a clay mineral that does not expand even when water is added, and the total amount of the soil and plant fragments is about 1.0 m ³ . The soil is about 0.3 m ^{3 to} about 0.7 m ³ , the water is about 0.1 m ^{3 to} about 0.6 m ³ , the clay mineral is about 20 kg to about 100 kg, and the aggregate The method of forming a plant growth base according to claim 1, wherein the agent is about 1 kg to about 6 kg. A method of forming a plant growth base on the slope,
While applying pressure by a pump to a fluid containing clay mineral that does not expand even when water is added, the fluid is conveyed through a tube.
Adding a flocculating agent and compressed air to the fluid in the middle of the tube to produce a plant growth base material;
A method of forming a plant growth base comprising releasing the plant growth base material from the tube to the slope by the compressed air. The fluid includes plant fragments and water in addition to the clay mineral, and the clay mineral is about 0.3 m for a total of about 1.0 m ³ of the clay mineral and the plant fragments. ³ to about 0.7 m ^3, the water is about 0.1 m ³ and about 0.6 m ^3, the crumb comprise about 1kg to about 6 kg, the plant growth foundation according to claim 5 How to form. An apparatus for forming a plant growth base on the slope,
A pump and a pipe connected to the pump;
The pipe is at least one first connection port provided at an intermediate portion thereof, and at least one first connection port to which a first supply pipe for supplying compressed air to the pipe is connected, and the first connection A plant growth base having a second connection port provided in the intermediate portion at a distance from the mouth and connected to a second supply tube for supplying a aggregate to the tube is formed. Device to do.

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