JP4359488B2 - Groove forming jig and groove forming method - Google Patents

Description

  The present invention relates to a groove forming jig used when forming a groove in construction work or civil engineering work, and a groove forming method using the groove forming jig.

  Conventionally, as a groove forming jig used to form a groove in construction work or civil engineering work, for example, there is one described in Patent Document 1.

  The groove forming jig will be described with reference to FIG. 9. The groove forming jig 110 includes a jig main body 111 and a grip portion 112. The jig body 111 is formed in a columnar shape whose cross section is a substantially right triangle. The side surface of the jig main body 111 includes a wall facing surface 113 that is in contact with the inner surface 121 of the foundation 120 (hereinafter referred to as the foundation inner surface 121), a top surface 114 that is perpendicular to the wall facing surface 113, and a top surface 114 and a wall. It comprises an inclined surface 115 that connects the opposing surface 113 in a slightly curved state. And the holding part 112 is formed in the shape extended upwards from the approximate center position of the upper surface 114 while it is formed in substantially rod shape.

  As an example of a method of forming a groove using the groove forming jig 110, a groove 131 (see FIGS. 10 and 11) for filling an ant-proof granule material having ant-proof performance is formed on the foundation 120. The procedure is described below.

First, gripping portion 112 is gripped by hand, the boundary portion between wall facing surface 113 and inclined surface 115 is the lower end, and as shown in FIG. 10, with wall facing surface 113 in contact with base inner side surface 121, The groove forming jig 110 is pierced on the ground 130 and the jig main body 111 is pushed into the ground 130 to form the groove 131. Thereafter, as shown in FIG. 11, the groove forming jig 110 is extracted from the ground 130 so that the groove portion 131 can be filled with the ant-proof granule material and the like.
Japanese Patent No. 2587816 (FIG. 1)

  Conventionally, when the groove 131 is formed using the groove forming jig 110, as described above, the operation of pushing the groove forming jig 110 into the ground 130 has been performed manually, so there is a limit to the force that can be applied. For example, in the case where the groove 131 is formed using the groove forming jig 110 in a hard ground, for example, a great effort is required, and the work requires a lot of time and labor. Therefore, it has been desired to reduce the burden of the groove forming work and improve the working efficiency.

The invention according to claim 1 is a groove forming jig for forming a groove portion on the ground surface by pressing against the ground surface near the foundation of a building, the upper surface and downward from an end portion of the upper surface. A columnar jig having an opposing surface facing the foundation side surface in a state along the foundation side surface of the building when extended and pressed against the ground surface, and a bottom forming surface for forming the bottom surface of the groove portion. And a plate-like projecting portion projecting from the upper surface of the jig body to the opposite side of the opposing surface .

According to a second aspect of the present invention, in the groove forming jig according to the first aspect, a protruding dimension of the protruding portion from the jig main body is larger than a height dimension of the jig main body .

According to a third aspect of the present invention, in the groove forming jig according to the first or second aspect, the protrusion is formed in a shape that is substantially flush with the upper surface of the jig body. To do.

According to a fourth aspect of the present invention, in the groove forming jig according to any one of the first to third aspects, the jig main body is formed in a columnar shape having a substantially triangular shape with a cross section having a vertex at the lower end. It is characterized by that.

Invention of Claim 5 is a groove | channel formation method which forms a groove part in the ground surface at the time of a foundation using the groove | channel formation jig | tool and work compactor in any one of Claims 1-4, Comprising: Said upper surface Is directed upward, the lower end of the opposing surface of the jig body is substantially in contact with the foundation side surface, and one end of the projection in the projecting direction is in contact with the ground surface in a posture facing the side opposite to the foundation side surface. The groove forming jig is disposed on the ground surface, and the working compactor is placed on the projecting portion from the one end side of the projecting portion, whereby the jig body is placed on the ground surface. The projecting part transmits the force for pressing to the jig body and presses the jig body against the ground surface at the base, and the opposing surface of the jig body is along the side of the foundation by this pressing. The jig body is at the base of the ground. The pushed are possible within, and forming a groove in said base.

The invention of claim 6 has a top surface, has a shape substantially corresponding to the shape of the groove portion formed on the ground surface, and is formed into a columnar groove that forms a groove portion on the ground surface by being pressed against the ground surface. A groove forming method for forming a groove on a ground surface at the base using a forming jig, a plate-shaped rolling member having a width wider than the upper surface of the groove forming jig, and a working compactor. The groove forming jig is disposed on the ground surface such that the upper surface is directed upward and the lower end portion of the groove forming jig is in contact with the ground surface, and the foundation on the upper surface of the groove forming jig is disposed. The rolling member is inclined with respect to the ground surface so that the lower surface of the rolling member is in contact with the opposite end of the rolling member, and one end of the rolling member is in contact with the ground surface. And the working compactor is connected to the one end side of the compacting member. Then, the rolling member transmits the force for pressing the groove forming jig against the ground surface to the groove forming jig so that the groove forming jig is moved to the groove forming jig. The groove is formed by pressing against the surface of the ground and pressing the groove forming jig into the ground .

  The invention according to claim 1 includes a jig body having an upper surface, a facing surface, and a bottom portion forming surface, and a plate-like projecting portion that projects from the top surface to the opposite side of the facing surface.

  Therefore, in a state where the groove forming jig is arranged on the ground, a pressing force for pushing the groove forming jig into the ground is applied to the jig by placing the working compactor thereon. Therefore, as compared with the case where such pushing is performed manually, it is possible to reduce the burden of forming the groove and improve the work efficiency.

Further, since the jig body has a collision detecting portion, if so put the working rolling intensifier on the groove forming tool, including the projecting portion, the transfer machine for the working stability Thus, it is possible to secure a sufficient area for mounting, and the jig groove forming jig can be surely pushed into the ground. Therefore, it is possible to reliably form the groove using the working compactor.

Moreover, since the said jig | tool main body is provided with the opposing surface which can be made to oppose in the state along the basic | foundation side surface of a building, when pushing in the said jig | tool main body in the said ground, the said opposing surface is said base side surface. Therefore, it is possible to reliably form the groove portion at the time of the foundation. Moreover, since the said jig | tool main body is provided with the bottom part formation surface for forming the bottom face of the said groove part, the said groove part can be formed reliably. Since the jig main body is formed in a columnar shape, the groove can be formed over a certain length by pushing the jig main body into the ground.

  Furthermore, in the invention according to claim 1 having the above-described configuration, the lower end portion of the opposing surface of the jig body is substantially in contact with the base side surface, and one end of the protruding portion of the jig body is defined as the base side surface. The groove forming jig can be arranged on the ground surface in a posture facing the opposite side. In this state, when the working compactor is placed on the protruding portion from one end side of the protruding portion and pressed against the protruding portion, the protruding portion transmits the force to the jig main body, and the jig main body is pushed into the ground. It is. Thereby, a groove part can be formed by pressing the jig body against the ground surface near the foundation. That is, even when the groove portion is formed at the base, the groove portion can be formed using the working compactor, so that the efficiency of forming the groove portion can be improved.

  In the groove forming jig of the present invention, if the projecting dimension of the projecting portion from the jig main body is increased, the jig main body and the jig main body and the jig body are placed on the groove forming jig. When one end of the projecting portion is disposed on the ground surface, the working compactor is projected in a state where the jig body is supported by the projecting portion and the posture of the jig body is maintained in a normal posture. Since the working compactor is placed on the groove forming jig and the groove forming jig is pushed into the ground, the position of the jig main body is shifted and the groove section is It is possible to prevent the groove from being formed and to reliably form the groove. Therefore, workability at the initial stage of construction can be improved. In particular, as in the configuration of the invention according to claim 2, when the protruding amount of the protruding portion from the jig body is larger than the height dimension of the jig body, such an effect can be obtained effectively. I can do it.

If the structure of invention of Claim 3 is taken, since the said protrusion part is formed in the shape used as the substantially the same surface as the upper surface of the said jig | tool main body, the said working compactor is put on the said groove | channel formation jig | tool. When it is placed, it can be placed not only on the protrusion but also on the upper surface of the jig body. Therefore, it is possible to secure a wider area for placing the working compactor, and it is possible to place the working compactor on the groove forming jig in a more stable state.

If the structure of invention of Claim 4 is taken, since the said jig | tool main body is formed in the shape which becomes a substantially triangular shape with a cross section having a vertex in a lower end part, when pushing in the said jig | tool main body in the said ground The vertex can be pushed into the ground so that the pushing operation can be performed more reliably.

In the method of the invention of claim 5, wherein the lower end portion of the facing surfaces of the jig main body is substantially in contact with said base side and, in a posture in which one end of the collision detecting portion faces opposite the basic side, the groove By placing a forming jig on the ground surface and placing the working compactor on the protruding portion , the protruding portion transmits the force to the jig main body, and the jig main body is grounded at the base. To form a groove. That is, even when the groove portion is formed at the base, the groove portion can be formed using the working compactor, so that the efficiency of forming the groove portion can be improved.

  In the invention of claim 6, even when the groove width of the groove part and the width dimension of the groove forming jig corresponding to the groove part are small, the upper surface of the groove forming jig is above the groove forming jig. The groove forming jig can be more reliably pushed into the ground by placing the rolling member having a large width and placing the working compactor thereon. That is, the rolling member is placed on the ground surface so that the bottom surface of the groove forming jig on the opposite side of the foundation contacts the bottom surface of the rolling member and one end of the rolling member contacts the ground surface. It is arranged to be inclined with respect to the one end side of the rolling member, and the work compactor is placed on the rolling member from the one end side so that the force for pressing the groove forming jig against the ground surface is used for rolling. The member transmits to the groove forming jig and presses the groove forming jig against the ground surface, and the groove forming jig is pushed into the ground at the base by this pressing. Thereby, even when the groove portion is formed at the base, the groove portion can be formed by using the working compactor, so that the efficiency of forming the groove portion can be improved.

  An embodiment of the present invention will be described with reference to FIGS.

First embodiment (see FIGS. 1 and 2)
As shown in FIG. 1, the groove forming jig 1 according to the present embodiment includes a jig main body 2 serving as a mold for forming a groove portion and a protruding portion 3.

  The groove forming jig 1 is mainly made of a material such as resin, metal, or wood, and the jig body 2 and the protruding portion 3 are integrally formed.

  The jig body 2 is formed in a column shape having a substantially right-angled isosceles triangle cross section, and in the present embodiment, the orthogonal sides have a length of about 30 mm. The side surface of the jig body 2 includes a facing surface 4 that can be along the base side surface 11 (see FIG. 2), and an upper surface 5 formed above the facing surface 4 in a state of being perpendicular to the facing surface 4. The bottom portion forming surface 6 is formed between the facing surface 4 and the upper surface 5 in an inclined manner, and the boundary portion between the facing surface 4 and the bottom portion forming surface 6, that is, the lower end portion 7 of the jig body 2 is The apex of the right triangle forms an acute angle.

  The protruding portion 3 extends in a substantially plate shape in a state where it is flush with the upper surface 5 and is protruded in a direction substantially perpendicular to the length direction of the jig body 2. In the illustrated example, the protruding amount W of the protruding portion 3 from the jig body 2 is set to about 70 mm in the present embodiment, and is set to be larger than the height dimension H (about 30 mm) of the jig body 2. . The length L of the groove forming jig 1 is set to about 2 m in this embodiment.

  Next, based on FIGS. 2A to 2D, a method for forming the groove portion 30 using the compactor T (working compactor) at the time of the foundation 10 using the groove forming jig 1 will be described. To do. In the compactor T used in the present embodiment, a roller is disposed on the bottom surface, and the weight of the compactor T is transmitted by the roller to tread the ground, or a plate is disposed on the bottom surface. There are things that step on and harden the ground by vibrating. Moreover, in this embodiment, the method of forming the groove part 30 for putting the granule which has an ant-proof performance is illustrated.

  First, as shown in FIGS. 2A and 2B, the lower end portion 7 of the jig body 2 is substantially in contact with the base side surface 11, and the end portion 8 of the protruding portion 3 is opposite to the base side surface 11. The groove forming jig 1 is disposed on the surface of the ground 20 in a posture facing the surface.

  Next, as shown in FIGS. 2 (b) and 2 (c), the compactor T is placed on the projecting portion 3 from the end 8 of the projecting portion 3, and the jig body 2 is placed on the ground 20 through the projecting portion 3. The jig body 2 is pressed against the surface of the ground 20 so that the compactor T is placed on both the jig body 2 and the protrusion 3 while applying a force for pressing against the jig body 2. And by this pressing, the jig body 2 is pushed into the ground 20 at the base 10 in a state where the opposing surface 4 of the jig body 2 is along the foundation side surface 11, and has a shape corresponding to the shape of the jig body 2. A groove 30 (see FIGS. 2C and 2D) is formed. When the area of the protrusion 3 or the upper surface 5 of the jig body 2 is large, the entire jig body 2 is pushed into the ground 20 by moving the compactor T on the jig body 2 and the protrusion 3.

  Finally, as shown in FIG. 2 (d), the compactor T is removed from the protrusion 3 and the groove forming jig 1 is removed from the ground 20. As a result, a groove of the same type as the jig body 2 is formed along the base side surface 11.

  In the present embodiment, the groove forming jig 1 is pushed into the ground 20 by placing the compactor T on the upper surface 5 or the protruding portion 3 of the groove forming jig 1, thereby forming the groove 30 having a shape corresponding to the jig body 2. Therefore, it is possible to reduce the burden of the work of forming the groove 30 and improve the work efficiency, compared to the case where the pushing is performed manually.

  Furthermore, since the groove forming jig 1 of the present embodiment has a protruding portion 3 that protrudes in a substantially horizontal direction from the upper surface 5 of the jig main body 2, By allowing the compactor T to be placed on the surface, it is possible to secure a sufficient area to stably place the compactor T. Therefore, it becomes possible to form the groove part 30 using the rolling compactor T, and the efficiency of the formation operation of the groove part 30 can be achieved.

  Furthermore, when the protruding amount of the protruding portion 3 is large (particularly when the protruding amount W is larger than the height dimension H of the jig main body 2), for example, the jig main body in which the illustrated cross section is formed in an inverted triangle. 2, even when the shape of the jig main body 2 is difficult to be stably placed on the surface of the ground 20, the end 8 of the projecting portion 3 comes into contact with the upper surface of the ground 20 so that the projecting portion 3 is A function of maintaining the jig body 2 in a posture close to a normal posture is also achieved.

  Moreover, when this groove | channel formation jig | tool 1 is used, when the jig | tool main body 2 is arrange | positioned on the surface of the ground 20, the edge part 8 of the protrusion part 3 can also be arrange | positioned on the surface of the ground 20. FIG. That is, since the compaction machine T can be put on the projection part 3 in a state where the jig body 2 is supported by the projection part 3 and the posture of the jig body 2 is stabilized, the compaction machine T is used as a groove forming jig. When the jig body 2 is pushed onto the ground 20 and pushed into the ground 20, the posture of the jig body 2 is prevented from being shifted and the groove portion 30 is not formed, and the groove portion 30 can be reliably formed.

  Furthermore, since the jig body 2 includes the facing surface 4 that can face the base side surface 11 along the base side surface 11, when the jig body 2 is pushed into the groove portion 30, the facing surface 4 faces the base side surface 11. It can carry out in the state to which it followed, and can form reliably the groove part 30 in the case of the foundation 10. FIG. That is, by using this groove forming jig 1, it is possible to form the groove part 30 using the compactor T even in the case of the groove part 30, and it is possible to improve the efficiency of forming the groove part 30. In addition, since the jig body 2 includes the bottom portion forming surface 6 for forming the bottom surface of the groove portion 30, the groove portion 30 can be reliably formed.

  Further, since the protrusion 3 is formed in a shape that is substantially flush with the upper surface 5 of the jig body 2, when the compactor T is placed on the groove forming jig 1, not only the protrusion 3 but also the jig It is possible to place it on the upper surface 5 of the main body 2, and it is possible to secure a larger area for placing the compacting machine T, and it is possible to place the compacting machine T on the jig body 2 in a more stable state. It becomes.

  Furthermore, since the jig body 2 is formed in a columnar shape, the groove 30 can be formed over a certain length by pushing the jig body 2 into the groove 30.

  Further, since the projecting portion 3 is projected in a direction that forms an angle substantially perpendicular to the length direction of the jig body 2, a state in which an area for placing the rolling compactor T is secured and the jig body 2 is supported. Thus, the groove forming jig 1 can be disposed on the surface of the ground 20 in a state where the jig body 2 is stabilized in a normal posture.

  Further, since the groove forming jig 1 is formed in a substantially triangular shape having a cross section having a vertex at the lower end portion 7, when the jig body 2 is pushed into the ground 20, the lower end portion 7 is brought into the ground 20. It can push in in the state which bites in, and can perform the said pushing operation | work more reliably.

  Other embodiments will be described below. In addition, about the thing of the same structure as the said embodiment, it attaches | subjects only the same code | symbol and the detailed description is abbreviate | omitted.

Second embodiment (see FIGS. 3A and 3B)
The groove 30 is not necessarily formed only in a shape corresponding to the shape of the jig body 2. For example, by setting the thickness A of the protruding portion 3 to a desired thickness and pressing the upper surface of the groove forming jig 1 into the ground 20 with the compactor T, the groove 30a is formed in a portion corresponding to the jig body 2. At the same time, a groove 30b having a depth A ′ substantially equal to A may be formed in a portion corresponding to the protrusion 3. That is, the groove portion 30 may be formed in a shape corresponding to the shape of the entire groove forming jig 1.

Third embodiment (see FIGS. 4A to 4D)
In the groove forming jig 1 of the present embodiment, the jig body 2 and the protruding portion 3 are not integrally formed from the beginning, but using a square member 50 and a plate member 60 (transfer member), These members are formed by integrating them.

  As shown in FIG. 4A, the square member 50 is formed in a columnar shape having a cross section of a substantially right triangle. The side surface of the square member 50 is composed of two orthogonal surfaces 51 that are orthogonal to each other and an inclined surface 52 that connects the orthogonal surfaces 51 to each other. Further, the width length W2 of the plate member 60 is larger than the width length W1 of the orthogonal surface 51 of the square member 50.

  Then, as shown in FIGS. 4B and 4C, the plate material 60 is disposed on the upper surface of the orthogonal surface 51 of the square member 50, and one end of the plate material 60 is in contact with the orthogonal portion 53 of the orthogonal surfaces 51. Thus, the groove forming jig 1 is configured by integrating the square member 50 and the plate member 60 with an adhesive or the like.

  Note that the square member 50 and the plate member 60 are not necessarily integrated with an adhesive, and may be integrated using screws B, for example, as shown in FIG.

Fourth embodiment (see FIGS. 5A to 5D)
The groove forming jig used in the present invention does not necessarily have to integrate the jig main body and the protruding portion. For example, while using the square member 50 used in the above-described third embodiment as a groove forming jig, it is also possible to form the plate member 60 (rolling member) by the following method.

  First, as illustrated in FIG. 5A, the orthogonal surface 51 of the square member 50 is brought into contact with the base side surface 11, and the boundary portion between the orthogonal surface 51 and the inclined surface 52 is brought into contact with the ground 20.

  Next, as illustrated in FIG. 5B, the plate member 60 is disposed on the surface of the ground 20 in an inclined manner in a state of being placed on the square member 50 and in a state where the end portion 61 is in contact with the ground 20. .

  Furthermore, as shown in FIG. 5C, the pressing machine T is placed on the plate material 60 from the end 61 of the plate material 60, and the force for pressing the square material 50 against the ground 20 through the plate material 60 is applied to the square material 50. In addition, the square member 50 and the plate member 60 are pressed against the surface of the ground 20. Then, with this pressing, the square member 50 is pushed into the ground 20 at the base 10 in a state where the orthogonal surface 51 of the square member 50 is along the foundation side surface 11, and has a groove portion 30 having a shape substantially corresponding to the shape of the square member 50 (FIG. 5). (C) and (d) are formed. In addition, you may form the shape of the groove part 30 in the shape corresponding to the shape including the board | plate material 60 by making the board | plate thickness of the board | plate material 60 into desired thickness.

  Finally, as shown in FIG. 5D, the compactor T is removed from the plate material 60, and the square material 50 and the plate material 60 are removed from the ground 20.

  When the above method is adopted, even when the groove width of the groove portion 30 and the width dimension W1 of the orthogonal surface 51 of the square member 50 corresponding to the groove portion 30 are small, the width is larger than the orthogonal surface 51 on the square member 50. By placing the plate member 60 and placing the rolling compactor T thereon, the square member 50 can be pushed into the ground 20 more reliably.

Other embodiments (see FIGS. 6 to 8)
(1) The jig body 2 of the groove forming jig 1 is not necessarily solid, and may be formed in a hollow shape as shown in FIG. 6, for example.

  (2) The jig body 2 of the groove forming jig 1 need not be formed in a column shape having a substantially right-angled triangular cross section. For example, you may form in the cross section of another triangle like the cross section of a regular triangle. Further, as shown in FIG. 7, a connecting surface 9 extending substantially parallel to the opposing surface 4 is formed between the bottom forming surface 6 and the upper surface 5, and the jig body 2 is formed in a column shape having a substantially trapezoidal cross section. May be. Further, as shown in FIG. 8, the jig body 2 may be formed in a column shape having a substantially rectangular cross section.

  (3) When the compactor T (work compactor) is placed on the projecting part 3 from the end 8 of the projecting part 3, a part of the compactor T may be placed on the upper surface 5.

  (4) The groove forming jig 1 is not necessarily provided with the protruding portion 3. For example, when the width of the jig main body 2 itself is large, such as the groove forming jig 1 for forming the wide groove portion 30, the groove forming jig 1 is not necessarily provided with the protruding portion 3. The compactor T can be put on the upper surface of the upper surface 5 of the jig 1 and the groove forming jig 1 can be pushed into the ground 20.

  (5) When the groove forming jig 1 is pushed into the ground 20, it is not always necessary to use the compactor T. For example, the groove forming jig 1 can be pushed into the ground 20 by stepping on the groove forming jig 1 with a foot from above with the groove forming jig 1 disposed on the surface of the ground 20. Even in such a case, unlike the groove forming jig described in the background art, it is not necessary to hold the groove forming jig 1 by hand, so that the burden of the pushing operation can be reduced. However, when the groove forming jig 1 is pushed into the hard ground, it is possible to further reduce the work load by using the rolling mill T.

It is a perspective view which shows the groove | channel formation jig | tool concerning 1st embodiment of this invention. (A)-(d) is sectional drawing shown about the method of forming a groove part using the groove forming jig concerning 1st embodiment of this invention. (A), (b) is sectional drawing which shows the manufacturing process of the groove | channel formation jig | tool concerning 2nd embodiment of this invention. (A)-(d) is a perspective view which shows the manufacturing process of the groove | channel formation jig | tool concerning 3rd embodiment of this invention. (A)-(d) is sectional drawing which shows the manufacturing process of the groove | channel formation jig | tool concerning 4th embodiment of this invention. It is a perspective view which shows the groove | channel formation jig | tool concerning other embodiment of this invention. It is a perspective view which shows the groove | channel formation jig | tool concerning other embodiment of this invention. It is a perspective view which shows the groove | channel formation jig | tool concerning other embodiment of this invention. It is sectional drawing shown about the method of forming a groove part using the conventional groove formation jig | tool. It is sectional drawing shown about the method of forming a groove part using the conventional groove formation jig | tool. It is sectional drawing shown about the method of forming a groove part using the conventional groove formation jig | tool.

DESCRIPTION OF SYMBOLS 1 Groove formation jig 2 Jig main body 3 Protruding part 4 Opposite surface 5 Upper surface 6 Bottom part formation surface 7 Lower end part 8 End part 11 Basic side surface 20 Ground 30 Groove part 50 Square material (groove formation jig)
60 Plate material (rolling member)
T compactor (work compactor)

Claims (6)

A groove forming jig for pressing against the ground surface near the foundation of a building to form a groove on the ground surface,
Forming an upper surface, a facing surface that extends downward from an end of the upper surface, and faces the foundation side surface in a state along the foundation side surface of the building when pressed against the ground surface, and a bottom surface of the groove portion A columnar jig body having a bottom forming surface for
A groove forming jig , comprising: a plate-like projecting portion projecting from the upper surface of the jig body to the opposite side of the facing surface . In the groove forming jig according to claim 1,
A groove forming jig , wherein a protruding dimension of the protruding portion from the jig main body is larger than a height dimension of the jig main body . In the groove forming jig according to claim 1 or 2 ,
The groove forming jig , wherein the protrusion is formed in a shape that is substantially flush with the upper surface of the jig body . In the groove forming jig according to any one of claims 1 to 3 ,
The jig main body is formed in a columnar shape having a substantially triangular shape with a cross section having a vertex at the lower end . A groove forming method for forming a groove on the ground surface near the foundation using the groove forming jig and the working compactor according to any one of claims 1 to 4,
The ground surface in such a posture that the upper surface is directed upward, the lower end portion of the opposed surface of the jig body is substantially in contact with the base side surface, and one end of the projecting direction of the projecting portion faces the side opposite to the base side surface. The groove forming jig is arranged on the ground surface so as to come into contact with
By placing the working compactor on the projecting portion from the one end side of the projecting portion, the projecting portion transmits a force for pressing the jig body against the ground surface to the jig body. Press the jig body against the ground surface at the base,
By this pressing the jig body in a state where the facing surfaces of the jig body along said base side by is pushed into said soil in case said base, grooves and forming a groove in said base Forming method . A columnar groove forming jig having an upper surface and having a shape substantially corresponding to the shape of the groove portion formed on the ground surface, and forming the groove portion on the ground surface by being pressed against the ground surface, and the groove formation A groove forming method for forming a groove portion on the ground surface at the base using a plate-shaped rolling member having a width larger than the upper surface of the jig and a working compactor,
The groove forming jig is disposed on the ground surface so that the upper surface is directed upward and the lower end of the groove forming jig is in contact with the ground surface,
The rolling member so that the lower surface of the rolling member is in contact with the end of the upper surface of the groove forming jig opposite to the foundation, and one end of the rolling member is in contact with the ground surface. Is inclined with respect to the ground surface,
By placing the working compactor on the compacting member from the one end side of the compacting member, the compacting member generates a force for pressing the groove forming jig against the ground surface. Transmit to the forming jig and press the groove forming jig against the ground surface,
A groove forming method, wherein the groove portion is formed by pressing the groove forming jig into the ground by this pressing .

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