JPH11124853A - Method of grooved pit formation construction and bearing method of earth-retaining body in the method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of grooved pit formation construction, in which there is no noise and vibration by a simple facility, safety is improved, operating efficiency is enhanced extremely and a grooved pit can be formed at low cost and which has extremely superior practicability, and the bearing method of an earth-retaining body in the method of grooved pit formation construction. SOLUTION: In the method of grooved pit formation construction, in which a ground surface 1 is excavated, earth-retaining bodies 2 are arranged on both side face of the excavated pit and the process is repeated forward and a grooved pit is formed, a fixed number of the earth-retaining bodies 2 are disposed onto both side faces of the excavated pit, the disposed earth-retaining bodies 2 are borne from internal side faces, forward extended temporary fixing members 3 are distributed, the disposed earth-retaining bodies 2 are connected continuously among the temporary fixing members 3 and the excavated pit and the earth-retaining bodies 2 are arranged, and the disposed earth-retaining bodies 2 are borne by the overall length of the temporary fixing members 3. Fixing bodies bearing the disposed earth-retaining bodies 2 from the internal side faces are disposed at rears while the temporary fixing members 3 are moved forward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a slot and a method for supporting an earth retaining body in the method for forming a slot.

[0002]

2. Description of the Related Art
When forming a slot in the ground, the ground is excavated with an excavating machine or the like as appropriate, and then an operator enters the excavation hole and arranges retaining plates on both sides of the excavating hole. When disposed on both sides, a fixing frame is appropriately disposed so as to support the earth retaining plates on both sides from the inside to prevent collapse of the side surface of the excavation hole to form a slot, and this operation is sequentially repeated. An earth retaining plate extends forward and forms slots provided on both sides.

However, in the conventional method of forming a slot, a person enters the hole before excavating the ground and before preventing side collapse of the hole, that is, before disposing the fixed frame. It is very dangerous to do the work, and in some cases the earth retaining plate before the fixed frame is laid down may collapse both sides of the excavation hole, resulting in personal injury.

[0004] In order to proceed with the operation safely, there is also a method of driving a soil retaining plate from both sides of the excavation hole to be excavated in advance from the ground surface and excavating the inside of the soil retaining plate to form a slot. In this case, the operation of driving the earth retaining plate is difficult, and the earth retaining plate is required to have sufficient strength to withstand the driving, resulting in an increase in cost.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and is simple, has no noise or vibration, has high safety, has a very high working efficiency, and has a low cost for forming a slot. An object of the present invention is to provide a very practical slot forming method which can be formed.

[0006]

The gist of the present invention will be described with reference to the accompanying drawings.

A method of supporting a soil body in a slot forming method in which a ground 1 is excavated, earth retaining bodies 2 are disposed on both side surfaces of the excavation hole, and this is repeated forward to form a slot. After arranging a predetermined number of earth retaining bodies 2 on both side surfaces of the excavation hole, the installed earth retaining bodies 2 are supported from the inner side surface, and a temporary fixing member 3 extending forward is arranged. After arranging the earth retaining body 2 between the member 3 and the excavation hole so as to be connected to the arranged earth retaining body 2 and supporting the arranged earth retaining body 2 by the entire length of the temporary fixing member 3,
The present invention relates to a method for supporting an earth retaining body in a slot forming method characterized by moving the temporary fixing member 3 forward.

Further, there is provided a method for forming a slot by excavating the ground 1 and arranging earth retaining members 2 on both side surfaces of the excavation hole, and repeating this forward to form a slot. After arranging a predetermined number of retaining members 2 on the surface, the disposed retaining members 2 are supported from the inner side surface, and a temporary fixing member 3 extending forward is disposed. The earth retaining body 2 is disposed between the holes so as to be connected to the arranged earth retaining body 2, and after the installed earth retaining body 2 is supported by the entire length of the temporary fixing member 3, the arranged earth retaining body 2 is located rearward. The present invention relates to a slot forming method characterized by disposing a fixing body 10 for supporting the fixing member 2 from the inner surface and moving the temporary fixing member 3 forward.

In the method of forming a slot according to the second aspect, a plurality of temporary fixing members 3 are laminated, and after the disposed earth retaining member 2 is supported by the entire length of one temporary fixing member 3, another temporary fixing member 3 is supported. The present invention relates to a slot forming method characterized in that the temporary fixing member 3 is moved forward.

Further, there is a method of forming a slot by excavating the ground 1, arranging an earth retaining plate 2 on a side surface of the excavation hole, and repeating this forward to form a slot. A plurality of temporary fixing members 3 for supporting the earth retaining plate 2 to be disposed from the side are provided in a vertical direction, and the temporary fixing members 3 provided in the plural stages are alternately moved forward, and accompanying the movement of the temporary fixing member 3. A method for forming a slot, characterized in that a fixing frame 10 for supporting the earth retaining plate 2 from the side is disposed behind the temporary fixing member 3.

A method for supporting an earth retaining body in a slot forming method in which a ground 1 is excavated, an earth retaining plate 2 is disposed on a side surface of the excavated hole, and the above is repeated to form a slot. A support member 3 for supporting the earth retaining plate 2 provided on the side surface of the hole from the side surface is provided at least in two upper and lower stages, and a holding member 4 is provided between the upper support member 3 and between the lower support members 3.
The support members 3 on both sides of the holding member 4 press and support the retaining plate 2 from the side by extending the support member 4, and the support members 3 on both sides of the holding member 4 are separated from the retaining plate 2 by contracting the holding member 4. When forming and forming a slot, the holding member 4 provided between at least one support member 3 among the support members 3 provided at least in upper and lower two stages.
And the support members 3 on both sides of the contracted holding member 4
After the earth retaining plate 2 is disposed between the support member 3 and the excavation hole while moving the support member 3 forward, the support member 3 is extended by extending the holding member 4.
Then, the retaining plate 2 is pressed and supported from the side, and then the holding member 4 provided between the other supporting members 3 is contracted, and the supporting members 3 on both sides of the contracted holding member 4 are fixed to the one supporting member 3. After arranging the retaining plate 2 between the support member 3 and the excavation hole while moving it forward, the holding member 4 is extended and the retaining member 2 is
Is configured to be pressed and supported from the side, and the support member 3
While repeating contraction and extension of the holding member 4 provided therebetween,
The present invention relates to a method of supporting a retaining body in a slot forming method, in which one supporting member 3 and another supporting member 3 are alternately moved forward and a retaining plate 2 is sequentially disposed.

A method for supporting an earth retaining body in a slot forming method in which a ground 1 is excavated, an earth retaining plate 2 is arranged on a side surface of the excavated hole, and the above is repeated to form a slot. A support member 3 for supporting the earth retaining plate 2 disposed on the side surface of the hole from the side surface is provided at least in two upper and lower stages, and jacks 4 are provided between the upper support members 3 and between the lower support members 3.
The support material 3 on both sides of the jack 4 presses and supports the retaining plate 2 from the side by extending the support member 4, and the support material 3 on both sides of the jack 4 is separated from the retaining plate 2 by contracting the jack 4, When forming the slot, at least one of the support members 3 provided in the upper and lower stages is provided between one of the support members 3.
And the support members 3 on both sides of the contracted jack 4
The earth retaining plate 2 is disposed between the support member 3 and the excavation hole while moving the support member 3 forward, and the jack 4 is extended to support the support member 3.
Presses and supports the earth retaining plate 2 from the side, then contracts the jack 4 provided between the other support members 3, and moves the support member 3 on both sides of the contracted jack 4 forward while moving the support member 3 forward. After arranging the earth retaining plate 2 between the hole and the excavation hole, the jack 4 is extended to press and support the earth retaining plate 2 from the side with the support member 3, and the jack 4 provided between the support members 3 is provided.
The method of supporting a retaining body in a slot forming method, wherein one supporting member 3 and another supporting member 3 are alternately moved forward and the retaining plate 2 is sequentially disposed while repeating the contraction and extension of It is related.

Further, in the method for supporting an earth retaining body in the slot forming method according to claim 6, one end of a jack 4 provided between the support members 3 is connected to the support member 3 via a tube 5. The present invention relates to a method for supporting an earth retaining body in a slot forming method.

Further, in the method for supporting an earth retaining body in the slot forming method according to the present invention, a plurality of holes 6 are provided in the longitudinal direction of the pipe 5, and the locking members 7 are inserted into the holes 6. The present invention relates to a method for supporting an earth retaining body in a slot forming method, wherein the jack 4 is connected to a pipe 5.

Further, in the method for supporting an earth retaining body in the slot forming method according to any one of claims 6 to 8, the upper support member 3 and the lower support member 3 can be mutually locked in the vertical direction. The upper slide member 8 is attached to the upper support member 3,
The lower slide member 9 is provided on the lower support member 3, and the upper support member 3 and the lower support member 3 are alternately slid with each other and move forward, whereby the earth retaining body is formed by a slot forming method. It relates to a supporting method.

Further, in the method for supporting an earth retaining body in the slot forming method according to any one of claims 6 to 9, the support members 3 provided in two stages, upper and lower, are advanced.
A fixing frame 10 for supporting the retaining plate 2 from the side is provided at the rear of the method.

[0017]

According to the present invention, a predetermined number of retaining members 2 are disposed on both sides of a drilled hole formed by excavating the ground 1, and a temporary fixing member is provided between the disposed retaining members 2 on both sides of the drilling hole. 3 is provided, and the installed earth retaining body 2 is supported from the inner side surface to prevent the installed earth retaining body 2 from falling down, that is, the side wall of the excavation hole from collapsing.

Subsequently, the earth retaining body 2 is disposed between the temporary fixing member 3 extending in front of the installed earth retaining body 2 and the excavation hole so as to be connected to the installed earth retaining body 2. . At this time, the earth retaining body 2 connected to the installed earth retaining body 2 is supported by the extended temporary fixing member 3 so as not to fall down, and the side of the excavation hole where the earth retaining body 2 is arranged is prevented from collapsing. Is done.

Therefore, there is no need to perform a work such as a conventional operation in which a person enters the excavation hole and disposes the earth retaining plate 2 before preventing a side collapse of the excavation hole. Work can be done safely without danger.

Further, unlike the prior art, it is not necessary to drive the earth retaining body 2 into the both sides of the slot to be excavated in advance from the ground surface in order to proceed with the work safely. No driving equipment is required for the driving operation 2 and no environmental problems such as noise and vibration are caused by the driving operation, and the slot can be formed with simple equipment with good work efficiency at low cost.

Further, in a state in which the anchoring body 2 is prevented from falling down by the temporary fixing member 3, the fixing frame
Since the fixed frame 10 is provided, the fixed frame 10 for preventing the side collapse of the excavation hole is provided as in the conventional method. There is no need to work such that a person enters the hole to dispose the fixing frame 10, and since the temporary fixing member 3 is always present when disposing the fixing frame 10, there is no danger in operation. You can work safely.

Since the present invention is as described above, the facility is simple, has no noise or vibration, is high in safety, has a very high working efficiency, and has excellent practicality in which a slot can be formed at low cost. Slotted hole forming method.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A slot forming method according to an embodiment of the present invention will be described below with reference to the drawings.

In this embodiment, as shown in FIGS. 1 to 3, the ground 1 is excavated, and the earth retaining bodies 2 are arranged on both side surfaces of the excavated hole, and this is repeated forward to form a slot. A method of forming a slot, in which a predetermined number of retaining members 2 are disposed on both side surfaces of the excavation hole, and then the disposed retaining members 2 are supported from an inner surface and are extended forward. 3 and the earth retaining body 2 is disposed between the temporary fixing member 3 and the excavation hole so as to be connected to the arranged earth retaining body 2. After that, a fixed body 10 for supporting the disposed earth retaining body 2 from the inner surface is disposed at the rear, and the temporary fixing member 3 is moved forward.

Further, the temporary fixing member 3 is formed by laminating two temporary fixing members 3, and after the disposed retaining body 2 is supported by the entire length of one temporary fixing member 3, the other temporary fixing member 3 is moved forward. It was made.

More specifically, the ground 1 is excavated,
This is a slot forming method in which a retaining plate 2 is disposed as a retaining body 2 on a side surface of the excavation hole, and a supporting member as a temporary fixing member 3 for supporting the retaining plate 2 disposed on the side surface of the slot from the side surface. 3
Are provided in at least upper and lower two stages, and a jack 4 as a holding member is provided between the upper supporting members 3 and between the lower supporting members 3,
The supporting material 3 is connected to both sides of the jack 4 and the jack 4
Is extended so that the support members 3 provided on both sides of the jack 4 press and support the retaining plate 2 from the side, and the support members 3 provided on both sides of the jack 4 are separated from the retaining plate 2 by contracting the jack 4. When forming a slot, the jack 4 provided between one of the support members 3 of the support members 3 provided in the upper and lower stages is contracted, and the support members 3 provided on both sides of the contracted jack 4 are formed. Is moved forward, the retaining plate 2 is sequentially disposed, the jack 4 is extended, and the retaining plate 2 provided on both sides of the jack 4 presses and supports the retaining plate 2 from the side, and then the other supporting member 3 After the jacks 4 provided between the support members 3 are contracted and the support members 3 provided on both sides of the contracted jacks 4 are moved forward, the earth retaining plates 2 are sequentially arranged between the support members 3 and the excavation holes. Supporting material provided on both sides of jack 4 by extending jack 4 The earth retaining plate 2 is configured to be pressed and supported from the side, and the shrinkage of the jack 4 provided between the one support members 3 and the shrinkage of the jack 4 provided between the other support members 3 are alternately repeated. The supporting member 3 and the other supporting member 3 are alternately moved forward and the earth retaining plates 2 are sequentially arranged.

One end of a jack 4 such as a hydraulic jack provided between the support members 3 is inserted from one end of a pipe (cutting lot) 5 to be provided therein, and a plurality of holes 6 are provided in the length direction of the pipe 5. (Three in this embodiment) are provided so as to penetrate the tube 5, and the jack 4 is inserted into the tube 5 by inserting the locking member 7 into any one of the holes 6. Although the connection is fixed, the hole 6 into which the locking member 7 is to be inserted is set such that the length of the connection between the jack 4 and the tube 5 becomes a desired size.

A support member (belly member) 3 is connected to both ends of the jack 4 and the tube 5 connected to a desired length.

The upper support members 3 and the lower support members 3
The jacks 4 provided between the earth retaining plates 2 provided on both sides of the slot
In this embodiment, two jacks 4 are provided between the upper support members 3 and between the lower support members 3 so that the support members 3 can be held in a stable state so that they can be pressed in a stable state. However, three or more jacks 4 can be provided as necessary.

An upper slide fitting 8 formed in an L-shape from the lower surface of the support material 3 is appropriately provided on the upper support material 3 so that the upper support material 3 and the lower support material 3 can be locked to each other in the vertical direction. A lower slide member 9 formed in an L-shape on the upper surface of the support member 3 is appropriately provided on the lower support member 3 so that the upper slide member 8 and the lower slide member 9 can be locked to each other in the vertical direction. The upper slide fitting 8 and the lower slide fitting 9 can be locked to each other in the vertical direction even when any of the upper and lower jacks 4 is contracted,
The upper support member 3 and the lower support member 3 can be alternately slid with each other and moved forward.

As described above, since the upper support member 3 and the lower support member 3 are configured to be locked to each other in the vertical direction, the jack connected to one of the upper and lower support members 3 is connected. If the support member 3 is extended, it is not necessary to separately provide a member for holding the support member 3 in order to prevent the upper and lower support members 3 from dropping below the slot, but if necessary, Or, in order to further enhance the safety, a fall prevention metal fitting 11 for holding the lower support member 3 from below,
For example, it can be provided so as to be appropriately locked to the upper end of the earth retaining plate 2.

The excavation hole is appropriately formed using a shovel machine or the like. When the support member 3 connected with the jack 4 is moved forward with the excavation promotion, the support member 3 is light in weight and can be easily operated by hand. Alternatively, a pressing jack or the like may be appropriately disposed at the rear end of the support member 3 and the support member 3 may be pressed and moved by the pressing jack or the like.

Hereinafter, the working steps of this embodiment will be described in detail.

The ground 1 is excavated, and a predetermined number of earth retaining plates 2 are arranged on both side surfaces of the excavation hole. Note that the predetermined number is one of the upper and lower sides (in this work process, it is temporarily assumed to be a lower row).
The number of supporting members 3 can be maintained in a state of being stretched between the arranged earth retaining plates 2 arranged on both side surfaces of the excavation hole by the jacks 4 or more.

Subsequently, a supporting member 3 is erected between the disposed earth retaining plates 2 on both sides of the excavation hole, and the lower jack 4 is extended so that the lower supporting member 3 is disposed on the installed earth retaining plate 2. Hold in tension between them. Therefore, the installed earth retaining plate 2 is provided with the lower supporting material 3.
It is irrevocably supported by.

Subsequently, the earth retaining plate 2 is sequentially arranged in the forward direction of the installed earth retaining plate 2 between the lower support member 3 and both side surfaces of the excavation hole.
Are arranged in a row. Therefore, the earth retaining plate 2 is disposed on both side surfaces of the excavation hole and is supported by the lower supporting member 3 so as not to fall down. If the length of the group of arranged earth retaining plates 2 in the front direction is longer than the length of the lower support member 3, this step is omitted.

Subsequently, if necessary, the jack 4 of the upper support member 3 is contracted to allow the upper support member 3 to slide, and then the upper support member 3 is moved forward.

Subsequently, the earth retaining plate 2 is sequentially arranged between the upper support member 3 and both side surfaces of the excavation hole in the forward direction of the installed earth retaining plate 2.
Are arranged in a row. Therefore, the earth retaining plate 2 is disposed on both side surfaces of the excavation hole and is supported by the lower supporting member 3 so as not to fall down.

Subsequently, the jack 4 of the upper supporting member 3 is extended, and the upper supporting member 3 is held and fixed by being pressed between the disposed earth retaining plates 2 on both side surfaces of the excavation hole.

Subsequently, the fixed frames 10 are sequentially arranged between the disposed retaining plates 2 from behind the support member 3, and the disposed retaining plates 2 are sequentially supported and fixed.

When the fixed earth retaining plate 2 is supported and fixed by the fixed frame 10, the jack 4 of the lower support 3 is contracted so that the lower support 3 can be slid and moved. From the side of the installed earth retaining plate 2 supported and fixed by
To move forward.

When the fixed frame 10 is disposed to the rear of the upper support 3, the lower support 3 is advanced forward from the upper support 3.

Hereinafter, the earth retaining plate 2 is disposed between the support member 3 and both side surfaces of the excavation hole while the upper support member 3 and the lower support member 3 are alternately advanced. A fixed frame body 10 is provided behind and the installed earth retaining plates 2 are sequentially supported and fixed to form slots.

The earth retaining plate 2 should preferably be an earth retaining sheet pile to make the driving work easier, and a wide lightweight rope sheet pile should be used to further enhance the working efficiency.

In this embodiment, as described above, after a predetermined number of retaining plates 2 are provided on both side surfaces of the excavation hole, the provided retaining plates 2 are provided.
Is supported from the inner surface, and a support member 3 extending forward is provided, and the soil plate 2 is disposed between the support material 3 and the soil plate 2 so as to be connected to the installed soil plate 2. Since the installed retaining plate 2 is supported by the entire length of the support material 3, the support frame 3 is moved forward, and the fixed frame body 10 that supports the retaining plate 2 from the inner surface is disposed rearward. During the period from the disposition of the retaining plate 2 to the fixing of the retaining plate 2 by the fixing frame 10, the retaining plate 2 is supported by the support material 3 so as not to fall down. It is a practical and safe slot forming method that can prevent workers from working down safely by preventing the earth retaining plate 2 from falling down and the side surface of the excavation hole during installation work.

Further, two support members 3 are laminated,
After the arranged earth retaining plate 2 is supported by the entire length of one support member 3, the other support member 3 is moved forward.
Despite the simple configuration, the earth retaining is continuously performed while the one supporting member 3 (for example, the lower supporting member 3) and the other supporting member 3 (for example, the upper supporting member 3) are alternately advanced. Board 2
And the fixed frame body 10 can be provided, and the slot forming method is excellent in practicality and work efficiency.

Further, a support member 3 for supporting the earth retaining plate 2 disposed on the side surface of the slot from the side surface is provided at least in two upper and lower stages.
The jacks 4 are provided between the upper support members 3 and between the lower support members 3, the support members 3 are connected to both sides of the jack 4, and the jacks 4 are extended to provide the support members 3 provided on both sides of the jack 4. The retaining plate 2 is pressed and supported from the side, and the support material 3 provided on both sides of the jack 4 is configured to be separated from the retaining plate 2 by contracting the jack 4. The jack 4 provided between one of the supporting members 3 is contracted, and the supporting members 3 provided on both sides of the contracted jack 4 are separated from the side surfaces of the earth retaining plate 2. The earth retaining plate 2 is sequentially arranged while moving in the forward direction of the excavation hole, and after the earth retaining plate 2 is arranged, the jack 4
Is extended to support the earth retaining plate 2 from the side by the support members 3 provided on both sides of the jack 4, and then the jack 4 provided between the other support members 3 is contracted, and the contracted jack 4 is contracted.
The support members 3 provided on both sides are separated from the side surface of the retaining plate 2, and the retaining members 2 are disposed sequentially while moving the supporting material 3 in the direction of excavation promotion of the slot. Thereafter, the jack 4 is extended to support the earth retaining plate 2 from the side with the support members 3 provided on both sides of the jack 4, so that the contraction of the jack 4 provided between one support member 3 and the other While the shrinkage of the jacks 4 provided between the support members 3 is alternately repeated, the one support member 3 and the other support member 3 are alternately advanced, and the earth retaining plates 2 can be sequentially disposed.

Therefore, unlike the related art, there is no need to perform a work such that a person enters the excavation hole and arranges the earth retaining plate 2 before excavating the ground and before preventing the side surface of the excavation hole from collapsing. ,
Work can be done safely without any danger in work.

Further, unlike the related art, it is not necessary to drive the earth retaining plate 2 from the ground surface into both side surfaces of the slot to be excavated in advance in order to proceed with the operation safely. No driving equipment is required for the driving operation 2 and no environmental problems such as noise and vibration are caused by the driving operation, and the slot can be formed with simple equipment with good work efficiency at low cost.

Further, since one end of the jack 4 provided between the support members 3 is connected to the support member 3 through the tube 5, when the width of the slot is different, the jack 4 is connected to one end of the jack 4. By appropriately changing the length of the connecting portion of the tube 5 to be connected and the connecting portion of the tube 5 with the support 3, the width between the supports 3 can be changed as appropriate, and the width of the different slot can be changed. In addition, the width dimension between the support members 3 can be appropriately set.

A plurality of holes 6 are provided in the longitudinal direction of the tube 5, and a locking member 7 is inserted into the holes 6 so that the jack 4 is formed.
Is connected to the tube 5, so that the length of the connection between the jack 4 provided between the support members 3 and the tube 5 is equal to one of the plurality of holes 6 provided in the length direction of the tube 5. By inserting the locking member 7 into the hole 6, the length of the connection between the jack 4 and the tube 5 can be appropriately adjusted, and the jack 4 and the tube between the support members 3 can be adjusted in a very simple manner. The length dimension connected to the body 5 can be adjusted, and the width dimension between the support members 3 can be adjusted very easily according to different width dimensions of the slot.

The upper support member 3 and the lower support member 3 can be vertically locked with each other.
Since the upper slide member 8 and the lower slide member 9 are provided on the lower support member 3 so that the upper support member 3 and the lower support member 3 are alternately slid with each other and move forward. When forming the above, the jack 4 provided between one of the support members 3 provided in the upper and lower two stages is contracted, and the support members 3 provided on both sides of the contracted jack 4 are moved forward. , A jack 4 provided between the other support members 3
Is extended, and the other support member 3 presses and supports the earth retaining plate 2 from the side, so that one support member 3 easily slides forward in a state of being locked to the other support member 3. When the other support member 3 is similarly slid forward and moved forward, the jack 4 provided between the one support member 3 is extended and the one support member 3 is retained in the earth. A state in which the side wall of the plate 2 is pressed and supported, the jack 4 provided between the other supporting members 3 is contracted, and the other supporting members 3 provided on both sides of the contracted jack 4 are locked to the one supporting member 3. Can easily slide forward and move forward, so that one support member 3 and the other support member 3 can be alternately moved forward by a very simple method.

Further, as the supporting members 3 provided in the upper and lower stages are advanced, the fixed frame 10 for supporting the earth retaining plate 2 from the side is provided behind the supporting members 3, so that a long slot is formed. In the case of forming, the fixing member 10 for supporting the earth retaining plate 2 from the side surface is provided in the rear slot while forming the slot while advancing the support member 3 provided in the upper and lower two stages. The earth retaining plate 2 provided in the entire hole can be more reliably supported by the fixed frame body 10 and the support members 3 provided in the upper and lower stages, and the side surface of the slot can be reliably prevented from collapsing. When a worker works in the hole, a highly safe slot can be formed that allows the worker to work with peace of mind.

The supporting member 3 supporting the earth retaining plate 2 is used as it is as the fixed frame body 10, and works such as piping of a sewer pipe are performed in the formed slot. Work may be performed to remove and refill the slot.

[Brief description of the drawings]

FIG. 1 is a front view showing a slot forming method according to one embodiment of the present invention.

FIG. 2 is a perspective view showing a slot forming method according to one embodiment of the present invention.

FIG. 3 is an explanatory sectional view showing a slot forming method according to one embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 ground 2 earth retaining body, earth retaining plate 3 temporary fixing member, support material 4 holding member, jack 5 pipe 6 hole 7 locking member 8 upper slide metal fitting 9 lower slide metal fitting 10 fixed body, fixed frame

Claims (10)

[Claims] 1. A method for supporting an earth retaining body in a slot forming method in which a ground is excavated, earth retaining bodies are arranged on both side surfaces of the excavation hole, and the above is repeated forward to form a slot. After arranging a predetermined number of earth retaining bodies on both side surfaces of the excavation hole, the arranged earth retaining body is supported from the inner side surface, and a temporary fixing member extending forward is provided, and the temporary fixing member and the excavation are provided. A soil retaining body is provided between the holes so as to be connected to the disposed soil retaining body, and after the disposed soil retaining body is supported by the entire length of the temporary fixing member, the temporary fixing member is moved forward. The method of supporting the earth retaining body in the slot forming method. 2. A method of forming a slot by excavating the ground, arranging earth retaining members on both side surfaces of the excavation hole, and repeating this forward to form a slot. After arranging a predetermined number of earth retaining members, the arranged earth retaining members are supported from the inner side surface, and a temporary fixing member extending forward is disposed, and the temporary fixing member is disposed between the temporary fixing member and the excavation hole. An earth retaining body is arranged in series with the installed earth retaining body, and after the installed earth retaining body is supported by the entire length of the temporary fixing member, a fixed body that supports the installed earth retaining body from the inner side is disposed rearward. And forming the temporary fixing member forward. 3. The slot forming method according to claim 2, wherein
A plurality of temporary fixing members are stacked, and after the disposed earth retaining member is supported by the entire length of one temporary fixing member, the other temporary fixing member is moved forward, thereby forming a slot. Construction method. 4. A method of forming a slot by digging the ground, arranging an earth retaining plate on a side surface of the digging hole, and repeating this forward to form a slot. A plurality of temporary fixing members for supporting the retaining plate from the side are provided in the vertical direction, and the temporary fixing members provided in the plurality of stages are alternately moved forward, and with the movement of the temporary fixing members, A method of forming a slot, characterized by disposing a fixed frame for supporting a retaining plate from the side at the rear. 5. A method for supporting an earth retaining body in a slot forming method in which a ground is excavated, an earth retaining plate is disposed on a side surface of the excavated hole, and the above is repeated to form a slot. Support members for supporting the earth retaining plate disposed on the side surface from the side surface are provided at least in upper and lower two stages, holding members are provided between upper support members and between lower support members, and both sides of the holding member by extending the holding member The support material presses and supports the earth plate from the side, and the support material on both sides of the holding member is configured to be separated from the earth plate by contracting the holding member, and when forming the slot, provided at least in two upper and lower stages A holding member provided between one of the supporting members is contracted, and a retaining plate is disposed between the supporting member and the excavation hole while moving the supporting members on both sides of the contracted holding member forward. After that, extend the holding member and push the retaining plate from the side with the support material. Pressure support, subsequently contracting the holding member provided between the other supporting members, and moving the supporting members on both sides of the contracted holding member forward of the one supporting member, while pressing the supporting member and the excavation hole. After arranging the retaining plate in between, the retaining member is configured to be stretched and the retaining member is pressed and supported from the side by the support material, and while the contraction and extension of the retaining member provided between the support materials are repeated, A method of supporting a retaining body in a slot forming method, wherein one retaining material and another supporting material are alternately moved forward and a retaining plate is sequentially disposed. 6. A method for supporting an earth retaining body in a slot forming method in which a ground is excavated, an earth retaining plate is disposed on a side surface of the excavated hole, and the above is repeated to form a slot. Supports for supporting the earth retaining plate arranged on the side from the side are provided in at least upper and lower two stages, jacks are provided between the upper support and between the lower supports, and the jacks are extended by extending the jack, and the support on both sides of the jack Pressing and supporting the earthing plate from the side, the supporting material on both sides of the jack is configured to be separated from the earthing plate by contracting the jack, and when forming the slot, at least in the upper and lower two-stage supporting material After shrinking the jack provided between the one supporting material and disposing the retaining plate between the supporting material and the excavation hole while moving the supporting material on both sides of the contracted jack forward, the jack is extended. Press the earth retaining plate from the side with the support Pressure support, and then contract the jack provided between the other support members, and dispose a retaining plate between the support member and the excavation hole while moving the support members on both sides of the contracted jack forward. After that, the jack is extended to support the earth retaining plate from the side with the support material, and the contraction and the extension of the jack provided between the support materials are repeated, and the one support material and the other support material are repeated. A method of supporting an earth retaining body in a slot forming method, wherein the earth retaining plate is alternately moved forward and an earth retaining plate is sequentially arranged. 7. The method for supporting a soil retaining body according to claim 6, wherein one end of a jack provided between the support members is connected to the support member via a tube. Support method for earth retaining bodies. 8. The method for supporting a retaining body in the slot forming method according to claim 7, wherein a plurality of holes are provided in a longitudinal direction of the tube, and a jack is inserted into the hole by inserting a locking member into the hole. A method for supporting an earth retaining body in a slot forming method, wherein 9. The method for supporting an earth retaining body in the slot forming method according to claim 6, wherein the upper support member and the lower support member can be locked to each other in a vertical direction. An upper slide member is provided on an upper support member, and a lower slide member is provided on a lower support member, and the upper support member and the lower support member slide alternately with each other and move forward. The method of supporting the earth retaining body in the construction method. 10. The method for supporting a soil body in the method for forming a slot according to any one of claims 6 to 9, wherein the earth retaining member is provided behind the supporting members as the supporting members provided in the two upper and lower stages advance. A method of supporting an earth retaining body in a slot forming method, comprising providing a fixed frame body that supports a plate from a side surface.