JP2020076207A - Spray method on slope surface and spray means - Google Patents

Abstract

To provide a spray method on a slop surface allowing uniform spray and spray means allowing the same.SOLUTION: Spray means X comprises: a transfer flow passage 40 connected to a supply source 50 of spraying material; a branch flow passage 30 connected thereto with a specific length; a plurality of tip flow passages separated therefrom; and a plurality of nozzle means 10 provided on the tips thereof respectively. The transfer flow passage 40 is connected to one end part or both end parts of the branch flow passage 30. Further, in a spray method on a slop surface, spraying material is sprayed on a slope surface G using the spraying means X.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a slope spraying method for spraying spraying material such as mortar, concrete, and soil on a slope, and spraying means for spraying material.

  As a spraying means used in a slope spraying method of spraying a spraying material such as mortar, concrete, or soil on the slope, there is one disclosed in Patent Document 1, for example. The spraying means (slope spraying device) disclosed in this document has a "spraying machine for spraying a spraying base material from a nozzle tip onto a slope". It is equipped with a tracking movement means that follows the movement and moves on the slope. " Further, the document discloses a slope spraying method in which a nozzle unit has four nozzles and the whole nozzle unit is moved up and down (paragraphs 0015, 0016, etc.). In the same document, the spray material reaches a support arm from a spray base material manufacturing plant through a high pressure hose, and reaches four nozzles through this support arm. The support arm of that document is then vertically connected to a high pressure hose from a spray substrate manufacturing plant. Since the spraying means of the document is provided with four nozzles, the spraying efficiency is remarkably improved according to the slope spraying method using the spraying means.

  However, according to the spraying means disclosed in the document, the spraying force (pressure) and the spraying amount of each nozzle are different. Therefore, according to the slope spraying method using the spraying means disclosed in the same document, uniform spraying cannot be performed.

Japanese Patent Laid-Open No. 10-195881

  A main problem to be solved by the present invention is to provide a slope spraying method capable of performing uniform spraying, and a spraying means that enables this.

Means for solving the above problems are as follows.
(Means according to claim 1)
It is a slope spraying method in which spraying material is sprayed onto the slope using spraying means,
As the spraying means,
A transfer flow path connected to the supply source of the spraying material, a branch flow path connected to the transfer flow path, having a predetermined length, a plurality of tip flow paths branched from the branch flow path, and a tip of the tip flow path. A plurality of nozzle means each provided in the section, using a spraying means in which the transfer flow path is continuous to one end of the branch flow path,
Slope spraying method characterized by that.

(Means according to claim 2)
In spraying the spray material on the slope,
Positioning one end of the branch channel on the side of the frontal slope,
The slope spraying method according to claim 1.

(Means according to claim 3)
The plurality of nozzle means are first nozzle means located on one end side of the branch flow path, third nozzle means located on the other end side of the branch flow path, and these first nozzles. A triple nozzle having a second nozzle means located between the means and the third nozzle means,
The base end of each nozzle means is provided with an air inlet for sending air into the nozzle means,
The length of the third nozzle means is longer than the length of the second nozzle means,
The slope spraying method according to claim 1 or 2.

(Means according to claim 4)
The transfer channel also connects to the other end of the branch channel.
The slope spraying method according to any one of claims 1 to 3.

(Means according to claim 5)
A transfer flow path connected to a supply source of spraying material,
A branch flow path of a predetermined length continuous with this transfer flow path,
A plurality of tip channels branched from this branch channel,
A plurality of nozzle means each provided at the tip of the tip channel,
The one end of the branch channel or both ends of the transport channel are connected,
Spraying means characterized in that.

(Means according to claim 6)
The branch channel is expandable and contractable, and the separation distance between adjacent nozzle means is changed according to the expansion and contraction of the branch channel.
The spraying means according to claim 5.

(Main effects)
If the spraying means is provided with a plurality of nozzle means, the spraying efficiency is improved, but the spraying may be non-uniform. Specifically, a configuration as disclosed in Patent Document 1, for example, a transfer flow path that is continuous with a spray material supply source and a branch flow path that is continuous with this transfer flow path are vertically connected (connected). When an odd number of nozzle means is provided, the spraying force from the nozzle means closest to the transfer passage becomes extremely strong, and the spraying amount increases. When an even number of nozzle means is provided, an imbalance occurs between the nozzle means connected to the branch passage on one side of the transfer passage and the nozzle means connected to the branch passage on the other side of the transfer passage. There are cases. Since this imbalance has the property that one influences the other, it is extremely difficult to make it uniform.

  On the other hand, in the present invention, since the transfer channel is connected to one end of the branch channel, imbalance is unlikely to occur. Further, even if it occurs, the imbalance can be predicted, and thus it is easy to make uniform (control).

  ADVANTAGE OF THE INVENTION According to this invention, it becomes the slope spraying method which can perform uniform spraying, and the spraying means which enables this.

It is the tip portion of the spraying means of this embodiment. It is explanatory drawing of the slope spraying method. It is an example of connection of a branch channel and a conveyance channel. It is a construction example of the slope spraying method. It is an example of a form of a tip part of a spraying means. It is another form example of the tip portion of the spraying means.

  Next, modes for carrying out the invention will be described. The present embodiment is an example of the present invention. The scope of the present invention is not limited to the scope of this embodiment.

  In the slope spraying method of the present embodiment, spraying material X is sprayed onto the slope G using the spraying means X. Therefore, in the following, first, the spraying means X will be described, and then the slope spraying method will be described.

(Blowing means)
As shown in (1) of FIG. 2, the spraying means X of the present embodiment has a transfer flow path 40 that is continuous with the supply source 50 of the spray material, and a branch flow path 30 that is continuous with this transfer flow path 40. Further, as shown in FIG. 1, a plurality of tip flow paths 20 (21 to 23) are branched from the branch flow path 30, and nozzles are respectively provided at the tip ends of the tip flow paths 20 (21 to 23). Means 10 (11-13) are provided. Further, in the present embodiment, the transport flow channel 40 is connected (connected) to the one end portion 30A of the branch flow channel 30. According to this mode, unlike the conventional mode in which the transfer channel and the branch channel are vertically connected, the imbalance of spraying is unlikely to occur, and even if it occurs, the imbalance can be predicted. Therefore, the spraying can be made uniform (controlled).

  As shown in FIG. 1, a plurality of nozzle means 10 are provided in this embodiment. The nozzle means 10 of the present embodiment includes a first nozzle means 11 located on the one end 30A side of the branch flow channel 30, a third nozzle means 13 located on the other end 30B side of the branch flow channel 30, It is a triple nozzle having the first nozzle means 11 and the second nozzle means 12 located between the third nozzle means 13. However, if necessary, the number of nozzle means 10 may be two (two nozzles) or four (four nozzles) or more (a plurality of nozzles).

  The base end portions 11A to 13A of the nozzle means 11 to 13 are respectively provided with air inlets for feeding the air A into the nozzle means 11 to 13. In the present embodiment, the spray material is sprayed on the slope G by the air A (surrounding the air A). The spray material is pumped by the pump P from the supply source 50 and reaches the nozzle means 10 (11 to 13) through the tip flow path 20 (21 to 23).

  In the present embodiment, for example, as shown in (1) of FIG. 5, it is preferable that the length L3 of the third nozzle means 13 is longer than the length L2 of the second nozzle means 12. Yes (L3> L2). In the spraying means X of the present embodiment, the transfer passage 40 is connected to the one end 30A of the branch passage 30, and the spraying material is pumped under pressure. Therefore, the spraying force of the spraying material from the third nozzle means 13 provided on the other end 30B side of the branch flow path 30 may be weakened or the spraying amount may be reduced. However, the imbalance between the nozzle means 11 to 13 can be eliminated by adopting the above-mentioned configuration in combination with the principle that the spraying force becomes stronger or the spraying amount becomes larger as the length of the nozzle means becomes longer. ..

  When the lengths L3 and L2 of the third nozzle means 13 and the second nozzle means 12 are different as described above, the length L2 of the second nozzle means 12 and the length of the first nozzle means 11 are different. The relationship with the height L1 can be appropriately designed in consideration of the spraying force and the spraying amount of each of the nozzle means 11 to 13.

  Specifically, for example, as shown in (1) of FIG. 5, the length L1 of the first nozzle means 11 is made longer than the length L2 of the second nozzle means 12 (L1> L2), and The length L1 of the first nozzle means 11 and the length L3 of the third nozzle means 13 can be the same length (L1 = L3). In this case, the lengths L1 and L3 of the first nozzle means 11 and the third nozzle means 13 can be designed in the range of 30 to 100 cm, for example. Further, the length L2 of the second nozzle means 12 can also be designed in the range of, for example, 30 to 100 cm (where L1 = L3> L2).

  Further, in addition to the above, as shown in FIG. 5B, the length L1 of the first nozzle means 11 can be made shorter than the length L2 of the second nozzle means 12 (L1 <L2). . Further, as shown in (3) of FIG. 5, the length L1 of the first nozzle means 11 and the length L2 of the second nozzle means 12 may be the same (L1 = L2).

  The above is to make the spraying uniform by adjusting the lengths L1 to L3 of the nozzle means 11 to 13. However, as shown in (2) of FIG. By making the transfer passage 40A continuous with 30B, it is possible to make the spraying uniform. In the illustrated example, the transport channel 40 is connected to one end 30A of the branch channel 30, and the transport channel 40A branched from the transport channel 40 is linked to the other end 30B of the branch channel 30. However, the one end 30A and the other end 30B of the branch flow channel 30 may be connected to the transport flow channels of different systems.

  It should be noted that FIG. 3 (1) shows a configuration in which the transport flow channel 40 is continuous with one end portion 30 </ b> A of the branch flow channel 30. Further, (3) of FIG. 3 illustrates a configuration in which the transport flow channel 40 is continuous with one end 30A of the branch flow channel 30 and the transport flow channel 40A is continuous with the other end 30B of the branch flow channel 30. In addition to this, as shown in (2) of FIG. 3, there is conceptually a mode in which the transfer channel 40 is connected only to the other end 30B of the branch channel 30. However, in the present embodiment, there is no difference between the one end portion 30A and the other end portion 30B of the branch flow passage 30, and therefore, in this form, the transport flow passage 40 is connected only to the one end portion 30A of the branch flow passage 30. Is the same.

  In this embodiment, the branch flow passage 30 has a predetermined length L4 (see FIG. 6). The length L4 is not particularly determined, and can be appropriately designed according to the purpose of spraying, the range of spraying, the material of spraying, and the like. However, it is preferable that the branch channel 30 can be expanded and contracted and the length L4 can be changed. In this case, if the distance between the nozzle means 11 to 13 that are adjacent to each other changes according to the expansion and contraction of the branch flow passage 30, the spraying force of the spraying material, the spraying amount, etc. are considered. Then, the spraying can be made uniform by changing the separation distance. Of course, the spraying range and the like can be changed by changing the separation distance. 6 (1) shows a state in which the branch flow channel 30 is contracted, and FIG. 6 (2) shows a state in which the branch flow channel 30 is expanded.

(Slope spraying method)
Next, a slope spraying method using the spraying means X will be described.
The slope spraying method of this embodiment is a method of spraying a spray material onto the slope G using the spraying means X. At the time of spraying, the spraying means X should be positioned so that the branch flow passage 30 faces the horizontal direction (horizontal direction) as shown in FIG. It can also be placed side by side. However, as shown in (1) of FIG. 4, the branch flow path 30 is positioned so as to face the vertical direction (vertical direction), that is, the plurality of nozzle means 10 are positioned so as to be aligned in the vertical direction. Is preferred. In this respect, when the spraying means X is positioned so that the branch flow path 30 faces the lateral direction, the spraying means X is moved upward while spraying, as shown in (2) of FIG. Stop spraying and move laterally, restart spraying and move downward, stop spraying again and move laterally, restart spraying again and move upward, spraying The moving distance of the means X becomes long. On the other hand, when the spraying means X is positioned so that the branch flow passage 30 faces the vertical direction, as shown in (1) of FIG. 4, the spraying means X is simply moved in the horizontal direction while spraying. Is sufficient and construction efficiency is improved.

  Further, in the case where the spraying means X is positioned so that the branch flow passage 30 faces the vertical direction, unlike the configuration in (1) of FIG. It is preferable to locate it on the upper side of the slope G). According to this mode, the spraying force and the spraying amount from the nozzle means 10 (the third nozzle means 13 in this embodiment) provided on the other end 30B side of the branch flow passage 30 are improved, and Uniformity is achieved.

(Other)
Examples of the spraying material that can be used in this embodiment include hardening materials such as mortar and concrete, and soil. Of course, the construction method and the spraying means of this embodiment can be applied to spraying materials other than these.

  The transfer channel 40, the branch channel 30, the tip channel 20, and the like can be configured by, for example, a tubular body or the like. In addition, the transport passage 40 can be formed of a flexible hose.

  Valve means such as a ball valve and a gate valve can be provided at the base end portions 11A to 13A of the nozzle means 11 to 13. By adjusting the opening / closing degree of the valve means, it is possible to adjust the flow rate of the spraying material and thus to make spraying uniform.

  Although not shown in particular, it is preferable that the air fed from the air feeding portion into the nozzle means 10 is not fed from one point but is made into an annular shape and fed. By sending in an annular shape, the sprayed material can be smoothly blown out from the tip of the nozzle means 10.

  The spray pressure and the spray amount of the spray material can be adjusted by changing the discharge pressure of the pump P. Further, the larger the discharge pressure of the pump P, the less the imbalance of the spray pressure between the nozzle means 11 to 13. Therefore, the discharge pressure of the pump P is preferably set high, for example, 5 to 15 Pa.

  The spraying means X of the present embodiment can be moved on the slope G using (equipped with) a civil engineering machine such as a backhoe. Further, the flow and flow rate of the spray material can be controlled by appropriately bending or bending the branch flow passage 30.

  INDUSTRIAL APPLICABILITY The present invention can be applied as a slope spraying method for spraying a spraying material such as mortar, concrete, or soil on a slope, and a spraying means for spraying material.

10 Nozzle Means 11 First Nozzle Means 12 Second Nozzle Means 13 Third Nozzle Means 11A First Nozzle Means Base Ends 12A Second Nozzle Means Ends 13A Third Nozzle Means Ends Parts 20, 21 to 23 Tip flow passage 30 Branch flow passage 30A Branch flow passage one end 30B Branch flow passage other end 40, 40A Transport flow passage 50 Supply source A Air G Slope P Pump X Spraying means

Claims (6)

It is a slope spraying method that sprays spray material onto the slope using spraying means,
As the spraying means,
A transfer flow path connected to the supply source of the spraying material, a branch flow path connected to the transfer flow path, having a predetermined length, a plurality of tip flow paths branched from the branch flow path, and a tip of the tip flow path. A plurality of nozzle means each provided in the section, using a spraying means in which the transfer flow path is continuous to one end of the branch flow path,
Slope spraying method characterized by In spraying the spray material on the slope,
Positioning one end of the branch channel on the side of the frontal slope,
The slope spraying method according to claim 1. The plurality of nozzle means are first nozzle means located on one end side of the branch flow path, third nozzle means located on the other end side of the branch flow path, and these first nozzles. A triple nozzle having a second nozzle means located between the means and the third nozzle means,
The base end of each nozzle means is provided with an air inlet for sending air into the nozzle means,
The length of the third nozzle means is longer than the length of the second nozzle means,
The slope spraying method according to claim 1 or 2. The transfer channel also connects to the other end of the branch channel.
The slope spraying method according to any one of claims 1 to 3. A transfer flow path connected to a supply source of spraying material,
A branch flow path of a predetermined length continuous with this transfer flow path,
A plurality of tip channels branched from this branch channel,
A plurality of nozzle means each provided at the tip of the tip channel,
The one end of the branch channel or both ends of the transport channel are connected,
Spraying means characterized in that. The branch channel is expandable and contractable, and the separation distance between adjacent nozzle means is changed according to the expansion and contraction of the branch channel.
The spraying means according to claim 5.

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