JP5754664B2 - Lower soil compaction device - Google Patents

Description

  The present invention relates to an undersoil compression apparatus that compresses underwater soil having high water leakage in a paddy field or the like to improve water shielding.

  The soil section of paddy fields consists of a soil layer that cultivates and cultivates crops such as paddy rice, and a lower layer soil (sometimes called a subsoil layer) below it.

  The paddy field is irrigated so that the surface part of the soil layer is soft mud, and rice is planted in a flooded state, and water is retained on the surface part during rice cultivation. The subsoil needs to have a water barrier in order to maintain a flooded state during rice cultivation.

  The paddy field of volcanic ash is leaked due to the high permeability of the subsoil, and may become a so-called leaked water field or leaked field with poor water retention. In paddy fields, root rot occurs in the subsoil, forming holes and gaps, which may cause water leakage.

  Then, when water permeability is large, in order to prevent water leakage, applying a soil improvement material and forming a water stop layer is known (refer to patent documents 1 and 2).

  In Patent Document 1, gravel and sand are separated and removed from sludge and general residual soil discharged from a construction site by a trommel and a classifier in order to effectively prevent water leakage from the cultivated soil layer of the paddy field to the lower ground. The remaining muddy water is dehydrated by a thickener and then applied to a filter press to separate water and solid clay. By spreading and solidifying the solid clay obtained by the above treatment on the lower ground surrounded by the shore, a hard-to-permeate layer is formed, and further, soil suitable for rice cultivation is laid on it. A layer is formed to constitute a paddy field. It is disclosed that the water-impermeable layer prevents water supplied to the cultivated soil layer from leaking to the lower ground side.

  Moreover, in the said patent document 2, in order to prevent the water leakage to a lower layer ground, in forming a water stop layer in the bottom part of a farm field, with a rotation shovel for soil excavation and a rotation shovel for subsoil excavation, In order to prevent mixing, the soil is excavated and separated into two stages, upper and lower, and the soil excavated by the subsoil conveyor and soil conveyor is transferred separately to the rear of the soil and subsoil to restore the original soil layer to the rear. At the same time, a water-stopping material is sprayed, stirred, rolled, and / or sprayed to the bottom of the excavated part where the subsoil has been excavated with a spray sprayer, agitator, and a pressure roller, to achieve a predetermined water permeability A method for forming a water-stopping layer at the bottom of a field is described in which a film of a poorly permeable layer or impermeable layer that maintains a coefficient is formed.

Japanese Unexamined Patent Publication No. 7-50938 JP-A-2-42903

  However, the methods disclosed in Patent Documents 1 and 2 both have a problem that much labor and time are required for excavating and backfilling the soil formation layer.

  Moreover, in the said patent document 1, it is necessary to install special processing equipment, such as a trommel, a classifier, a thickener, a filter press, etc. for manufacturing solid clay from sludge discharged from a construction site, etc., and general residual soil. Not only does it have to be large, but it also has the disadvantage of requiring an extra step in which solid clay must be laid and compacted.

  Further, in the cited document 2, a water stop layer forming machine including a rotary shovel for soil excavation, a rotary shovel for subsoil excavation, a spray sprayer, a stirrer and a rolling roller must be used. There is a problem that not only the layer forming machine becomes large, but also its structure becomes complicated.

  Therefore, the present invention can prevent water leakage from the lower soil by compressing the lower soil with a compression plate and improving water impermeability without digging up or backfilling the soil layer. A subsoil compressing device having a structure is provided.

The invention of claim 1 of the present application is a lower soil compressing device that is mounted on a vehicle and compresses the lower soil by horizontal movement , and includes a compression blade that cuts and compresses the lower soil in the horizontal movement direction . Attached so that both sides in the longitudinal direction are fixed perpendicularly to the vertical frame between the lower ends of the vertical frames on both sides facing each other with the upper part connected by a connecting frame, and can be rotated to the lower soil side by a cylinder The lower soil compressing device is characterized in that a working member is fixed to the connecting frame .

The invention of claim 2 is the compression blade is subsoil compression apparatus according to claim 1, characterized in that it is fixed to the vertical frame inclined downward toward the horizontal movement direction.

The invention according to claim 3 of the present application is the lower soil compressing apparatus according to claim 1 or 2 , wherein both sides of the tip portion of the compression blade on the horizontal movement direction side are pivotally attached to the vertical frame.

The invention of claim 4 is the rear surface of the front end portion of the horizontal movement direction of the compression blade claim compression sled inclined surface inclined upward toward the horizontal movement direction is formed is provided 1-3 It is a subsoil compressing apparatus of any one of these.

The invention of claim 5 is the tip of the horizontal movement direction of the compression blade, on the cut subsoil to the back surface of the compression blade is disposed the supply pipe for supplying water stopping material of claim 1-4 It is an undersoil compaction device given in any 1 paragraph.

The invention of claim 6 of the present application is the lower soil compressing apparatus according to any one of claims 1 to 5 , wherein a rolling roller is provided at a rear portion opposite to the horizontal movement direction of the compression blade.

  Since the present invention compresses the lower layer soil by simply moving the compression blade of the lower layer soil compression unit and cutting the lower layer soil without digging up or backfilling the soil layer, water leakage prevention work is performed. Simple. Moreover, when the lower layer soil on the compression blade falls after passing through the compression blade, the soil is cultivated with low energy and becomes soft.

  In addition, since the compression blade is fixed or pivotably attached to the lower end of the portal frame consisting of a vertical frame and a connecting frame and fixed to the work vehicle via a link mechanism, the structure is simple and the work vehicle of the device Easy to attach and detach to and from, and convenient to transport.

It is a perspective view which shows one Example of the lower soil compressing apparatus of this invention. It is a perspective view which shows another Example of the lower soil compression apparatus of this invention. It is sectional drawing of a compression blade. It is sectional drawing of various compression blades. It is a figure which shows the operation | movement order of the compression blade of this invention. It is a figure which shows the state which is pulling the lower layer soil compression apparatus of this invention. It is a graph which shows the terrestrial strength of the object area before the test adjacent to the test area. It is a graph which shows the inundation depth of the test area before the test adjacent to the test area. (A) is a side view of the lower soil compression apparatus provided with the compression blade which can be rotated, (b) is a front view. (A) is a figure which shows the pivoting joint part of the compression blade which can be rotated, and a vertical frame, (b) is a figure which shows the state which connected the compression blade and the vertical frame so that rotation was possible with a ring chain. It is a figure which shows the state which is pulling the lower-layer soil compression apparatus provided with the compression blade which can be rotated. It is a figure which shows the lower layer soil compression apparatus provided with the water stop material supply piping. (A) is a figure which shows the state which mounted | wore the bulldozer with the lower-layer soil compression apparatus, (b) is a figure which shows the state mounted | worn to the front part.

  Embodiments of the present invention will be described with reference to the drawings.

  In this embodiment, the lower soil compaction device 1 of the present invention is mounted on the arm 3 of the backhoe 2, and the arm 3 is operated by the cylinder 4 to bite the compression blade 6 into the lower soil 5 so that the lower soil compaction device 1 is horizontal. This is an example in which the lower soil 5 is pulled and pulled (see FIG. 6).

  In FIG. 1, the lower layer soil compressing apparatus 1 has a portal frame formed by a pair of opposing plate-like vertical frames 7 and a connecting frame 8 connecting the upper portions of the vertical frames 7 on both sides.

  Between the lower ends of the vertical frames 7 on both sides, a plate-like and rectangular compression blade 6 is fixed in the width direction perpendicular to the vertical frame 7. The tip of the compression blade 6 in the moving direction (the pulling direction in this embodiment) is formed in a blade shape in order to cut the lower soil and facilitate the movement. The vertical frame 7, the connecting frame 8, and the compression blade 6 are all made of thick steel plates in order to give rigidity. In addition, the back surface of the compression blade 6 may be not only a flat shape but also a wave shape or a saw-tooth shape.

  A mounting member 9 for mounting the lower soil compressing device 1 to the arm 3 of the backhoe 2 is fixed to the upper connecting frame 8. In FIG. 1, it is comprised by the two thick steel plates which oppose. The mounting member 9 is formed with an arm pivot mounting hole 10 for pivotally mounting on the arm 3 and a link pivot mounting hole 12 for pivotally mounting on the link mechanism 11. And the arm 3 are connected.

  The link mechanism 11 is pivotally attached to the arm 3 and is operated by a cylinder 4 attached to the arm 3. The cylinder 4 is actuated to operate and rotate the mounting member 9 so that the compression blade 6 is bitten into the lower soil 5 and then maintained in a horizontal state so that it can be pulled.

  The compression blade 6 can be, for example, about 1 m in length and about 30 cm in width, but is not limited to this, and is determined by conditions such as traction capability. The length of the compression blade 6 is not the same length as the interval between the opposing vertical frames 7 as shown in FIG. 1, but the compression blade 6 protrudes from both sides of the vertical frame 7 as shown in FIG. Also good.

  As shown in FIGS. 3 and 4 (a) to 4 (c), the compression blade 6 is tilted at an inclination angle θ from the horizontal toward the pulling direction of the lower soil compressing device 1 at an inclination angle θ. Fixed to the lower end. The inclination angle θ is an angle at which a downward force acts on the lower layer soil behind the compression blade 6 by traction, and can be, for example, about 15 degrees, but is not limited thereto.

Further, the lower surface of the front end portion of the compression blade 6, FIG. 3, the compression sled 13 which is inclined upward direction toward the winding direction, as shown in FIG. 4 (c) is formed.

In FIG. 4A, the compression effect is obtained by reversing the direction of the blade of the compression blade 6. Also, raising the back adds force in the down direction, producing a compression effect. In FIG.4 (b), the force of the downward direction is made with a blade, and the compaction roller 14 is attached to the back and it rolls. In the compression blade 6 having the shape shown in FIG. 4C, a lowering force is generated by the upper plate, and a large compression effect can be expected by the lower compression sled 13.

  The usage method of the lower soil compressing apparatus 1 of a present Example is demonstrated.

 In FIG. 5, the tip of the arm 3 of the backhoe 2 and the link mechanism 11 are pivotally attached to the arm pivot hole 10 and the link pivot hole 12 of the mounting member 9, and the lower soil compressing device 1 is attached to the backhoe 2. Installed.

  The backhoe 2 is moved, and as shown in FIG. 5A, the lower soil compressing device 1 is positioned above the compression start position. Next, after the link mechanism 11 is actuated by the cylinder 4 to incline the lower soil compressing device 1 so that the compression blade 6 bites into the land, as shown in FIG. 5B, the arm 3 and the link mechanism 11 is operated to cause the compression blade 6 to bite into the lower layer soil 5, and the lower layer soil compressing device 1 is made vertical as shown in FIG. 5 (c), and as shown in FIG. Pull 1 horizontally in the subsoil.

  By placing the lower soil compaction device 1 in a horizontal state, the compression blade 6 is inclined downward, and the upwardly inclined compression sled 13 formed on the back surface of the front end of the compression blade 6 cuts the lower soil. However, since it moves horizontally, the lower layer soil 5 is compressed on the lower surface of the compression blade 6.

  FIG. 7 shows the earth bearing strength of the test zone before the test adjacent to the test zone according to the present invention, and the earth bearing strength is increased by the compression action of the compression blade 6. In addition, as shown in FIG. 7, the soil strength of the upper surface of the compression blade 6 and the soil resistance of the lower layer soil are reduced, and the soil is cultivated because the compression blade 6 falls and softens after passing. It is considered a thing.

  FIG. 8 shows the results of testing the degree of water reduction per day by setting up a cylinder in the target zone before the test adjacent to the test zone according to the present invention and putting water. As is clear from the comparison of the inundation depth (logarithmic scale), it was confirmed that there was little water loss in the test area, while there was much water reduction in the target area.

  Further, as shown in FIG. 4B, the one provided with the rolling roller 14 can compress the lower soil 5 with the force in the downward direction of the compression blade 6, and can roll with the rear rolling roller 14. It becomes.

  The present embodiment is an example of a lower soil compression apparatus in which a compression blade is pivotally attached to a vertical frame.

As shown in FIGS. 9 to 11, a rotating plate 15 is fixed to both sides of the plate-shaped and rectangular compression blade 6 on the horizontal movement direction side, and the rotating plate 15 is attached to the vertical frames 7 on both sides. Each is pivotally attached to a rotating plate receiving member 16 provided at the lower end by a shaft so as to be rotatable. As in the first embodiment, the compression blade 6 may protrude from both sides of the vertical frame 7. Further, as in the first embodiment, the compression blade 6 may be provided with a compression sled 13 or a rolling roller 14 .

  Similarly to the first embodiment, the lower soil compressing device 1 including the rotatable compression blade 6 is also provided with the arm pivot mounting hole 10 and the link pivot mounting hole of the mounting member 9 at the tip of the backhoe arm 3 and the link mechanism 11. The lower soil compaction device 1 is mounted on the backhoe 2.

  Thereafter, the link mechanism 11 is operated by the cylinder 4 in the same procedure as in the first embodiment to rotate the lower soil compressing device 1 to bite the compression plate into the lower soil, and after holding the lower soil compressing device 1 horizontally, The backhoe is moved forward, the lower soil compressing device 1 is pulled, and the lower soil 5 is compressed while being cut by the compression plate 6.

  When the lower soil compressing apparatus 1 moves horizontally, when the compression blade 6 moves the soft lower soil 5, the compression blade 6 rotates and a force is applied to the lower side to compress the lower soil 5.

  In the present embodiment, the compression blade 6 is pivotally attached to the vertical frame 7 via the rotary plate receiving member 16, but the structure pivotably attached to the vertical frame 7 is, for example, FIG. As shown in FIG. 4, the lower ends of the vertical frames 7 on both sides and the both sides of the compression blade 6 may be connected to be rotatable with a ring chain.

  The rotating plate 15 is pivotally attached to a rotating plate receiving member 16 provided at the lower end of the vertical frame 7 on both sides by a shaft so as to be rotatable. As in the first embodiment, the compression blade 6 may be provided with a compression warp or a rolling roller.

  A present Example is an example of the lower-layer soil compression apparatus which can be supplied to the lower-layer soil which cut | disconnected water-stopping materials, such as bentonite with a water-stop effect.

  As shown in FIG. 12, a water-stop material supply pipe 18 for supplying a water-stop material 17 such as bentonite is disposed at the tip of the compression blade 6 on the horizontal movement direction side. The water stop material supply pipe 18 is provided so as to be jetted from the back side of the compression blade 6 along the longitudinal direction.

  It is possible to improve the water-stopping effect by supplying a water-stopping material to the cut surface of the compressed lower-layer soil 5 and laying it on the lower-layer soil with severe water leakage.

  In addition to the backhoe shown in the first embodiment, the vehicle to which the lower soil compressing device is attached can be attached to a bulldozer. The bulldozer can be attached to the front earth removal board or to the rear.

  As shown in FIG. 13 (a), the lower soil compressing apparatus 1 is mounted with the link mechanism 11 behind the bulldozer 19 connected to the mounting member 9. The link mechanism 11 is linked by the cylinder 4 to rotate the lower soil compressing device 1.

  As in the first embodiment, the link mechanism 11 is operated by the cylinder 4 to rotate the lower soil compressing device 1 so that the compression plate is bitten into the lower soil 5 and the lower soil compressing device 1 is held horizontally, and then the bulldozer The lower soil is compressed while cutting the lower soil 5 with the compression plate 6 by pulling the lower soil compressing device 1 forward.

  In FIG. 13 (b), the lower soil compressing device 1 is mounted on the bulldozer 19 on the side of the earth discharging plate 20 so as to be rotatable by the cylinder 4.

  The lower soil compression device 1 is rotated by the cylinder 4 to bite the compression plate 6 into the lower soil, and the lower soil compression device 1 is held horizontally, and then the bulldozer 19 is advanced and compressed while pushing the lower soil compression device 1. The lower soil 5 is cut with the plate 6 and compressed.

  The lower soil compressing apparatus 1 according to the present invention is not limited to a backhoe or a bulldozer, but can be easily mounted on a farm vehicle such as a tractor or a civil engineering vehicle.

1: Lower soil compression device 2: Backhoe 3: Arm 4: Cylinder 5: Lower soil 6: Compression blade 7: Vertical frame 8: Connection frame 9: Mounting member 10: Arm pivot mounting hole 11: Link mechanism 12: Link pivot Wearing hole 13: Compression sled 14: Rolling roller 15: Rotating plate 16: Rotating plate receiving member 17: Water stop material 18: Water stop material supply pipe 19: Bulldozer

Claims (6)

A lower soil compressing device that is mounted on a vehicle and compresses the lower soil by horizontal movement , comprising a compression blade that cuts and compresses the lower soil in the horizontal movement direction, and both sides of the compression blade in the longitudinal direction are connected frames. A mounting member that is fixed perpendicularly to the vertical frame between the lower ends of the vertical frames on both sides facing each other with an interval where the upper parts are connected to each other, and is rotatable to the lower soil side by a cylinder is fixed to the connection frame. A subsoil compressing device characterized by being made . 2. The lower soil compressing apparatus according to claim 1, wherein the compression blade is fixed to the vertical frame while being inclined downward in the horizontal movement direction . The lower layer soil compression apparatus of Claim 1 or 2 with which the both sides of the front-end | tip part by the side of the horizontal movement direction of the said compression blade are pivotally attached to the vertical frame . The compression warp in which the inclined surface which inclined upward toward the horizontal movement direction was formed in the back surface of the front-end | tip part at the side of the horizontal movement direction of the said compression blade is provided. Undersoil compaction equipment. The lower layer according to any one of claims 1 to 4, wherein a supply pipe for supplying a water-stopping material is disposed on a lower layer soil cut on a rear surface of the compression blade at a tip portion on a horizontal movement direction side of the compression blade. Soil compaction device. The lower layer soil compression apparatus of any one of Claims 1-5 which provided the compaction roller in the rear part on the opposite side to the horizontal movement direction of the said compression blade .

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