JP3154962B2 - Slot forming method and method of supporting earth retaining body in slot forming method - Google Patents

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 for forming a slot by excavating the ground 1 and arranging earth retaining bodies 2 on both side surfaces of the excavation hole and repeating this forward to form a slot. After arranging a predetermined number of the retaining members 2, the disposed retaining members 2 are supported from the inner side surface, are extended forward, and are slidably engaged with each other.
The upper slide fitting 8 and the lower slide fitting 9
A plurality of temporary fixing members 3 are disposed below the temporary fixing member 3, and the earth retaining body 2 is arranged between the temporary fixing member 3 and the excavation hole so as to be connected to the installed earth retaining body 2, and the arranged earth retaining member is provided. after the body 2 is supported by the entire length of one temporary fixing member 3, moves the other provisional fixing member 3 with arranging the fixing member 10 which supports the該配設済earth retaining member 2 from the inner surface to the rear to the front And a slot forming method.

Further, there is a method of forming a slot by excavating the ground 1 and arranging an earth retaining plate 2 on a side surface of the excavation hole, and repeating this forward to form a slot. together temporarily fixed member 3 that supports the earth retaining plate 2 disposed from the side
Upper slide bracket 8 and lower slide to lock freely
A plurality of steps are provided in the up and down direction via the guide metal fittings 9, and the temporary fixing members 3 provided in the plurality of steps are alternately slid and moved forward, and as the temporary fixing members 3 move, the temporary fixing members 3 are moved. Frame 10 that supports the earth retaining plate 2 from the side behind
The method according to the present invention relates to a method of forming a slot, characterized by disposing.

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. Upper slide metal that slidably locks supporting members 3 that support the earth retaining plate 2 disposed on the side surface of the hole from the side surface.
The holding member 4 is provided at least in upper and lower two stages via the tool 8 and the lower slide fitting 9 , the holding member 4 is provided between the upper supporting members 3 and between the lower supporting members 3, and the holding member 4 is extended by extending the holding member 4. Support members 3 on both sides press and support the earth retaining plate 2 from the side,
The supporting members 3 on both sides of the holding member 4 are configured to be separated from the earth retaining plate 2 by contracting the holding member 4, and when forming a slot, at least one of the supporting members 3 provided in upper and lower two stages is supported. After the holding member 4 provided between the members 3 is contracted and the support members 3 on both sides of the contracted holding member 4 are moved forward, the retaining plate 2 is disposed between the supporting member 3 and the excavation hole. The holding member 4 is extended to press and support the earth retaining plate 2 from the side with the support member 3, and then the holding member 4 provided between the other support members 3 is contracted, and the holding member 4 on both sides of the contracted holding member 4 is contracted. After disposing the retaining plate 2 between the supporting member 3 and the excavation hole while moving the supporting member 3 in front of the one supporting member 3, the holding member 4 is extended and the retaining plate 2 is fixed by the supporting member 3. Is pressed and supported from the side, and the contraction and extension of the holding member 4 provided between the support members 3 are repeated. While, it relates to a method for supporting earth retaining member in slots formed method, which comprises sequentially arranged an earth retaining plate 2 is moved forward one of the support 3 and the other of the support 3 alternately.

Further, there is provided 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. provided a support member 3 for supporting the earth retaining plate 2 disposed on a side surface of the hole from the side on at least upper and lower stages, the top of the support
3 and the lower supporting member 3 can be locked to each other in the vertical direction.
The upper slide member 8 and the lower support
The lower slide fitting 9 is provided on the holding material 3, and
The lower support 3 slides alternately with each other and moves forward.
The jacks 4 are provided between the upper support members 3 and the lower support members 3. The support members 3 on both sides of the jack 4 press the earth retaining plate 2 from the side by extending the jack 4. The support members 3 on both sides of the jack 4 are configured to be separated from the earth retaining plate 2 by supporting and contracting the jacks 4, and at least two supporting members 3 provided in upper and lower stages when forming a slot are formed.
The jack 4 provided between the support members 3 is contracted,
The earth retaining plate 2 is disposed between the supporting material 3 and the excavation hole while moving the supporting material 3 on both sides of the contracted jack 4 forward, and then the jack 4 is extended and the earth retaining plate 2 is fixed by the supporting material 3. Is pressed from the side, the jack 4 provided between the other support members 3 is contracted, and the support member 3 on both sides of the contracted jack 4 is moved forward while the support member 3 and the excavation hole are moved. After arranging the earth retaining plate 2 between them, the jack 4 is extended to press and support the earth retaining plate 2 from the side by the support material 3, and the jack 4 provided between the support materials 3 contracts and expands. The method according to the present invention relates to a method for 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 above steps. .

Further, in the method for supporting the earth retaining member in slots formed method according to claim 4, wherein the connecting one end of the jack 4 provided between the support member 3 and the supporting member 3 via the 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 fifth aspect, a plurality of holes 6 are provided in the longitudinal direction of the tube 5, and the locking member 7 is 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.

[0013] In the method for supporting an earth retaining body in the slot forming method according to any one of claims 4 to 6 , the support members 3 provided in two stages, upper and lower, advance.
A fixing frame 10 for supporting the retaining plate 2 from the side is provided at the rear of the method.

[0014]

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 the work of placing the earth retaining plate 2 by inserting a person into the digging hole before preventing the side surface of the digging hole from collapsing as in the related art. Work can be done safely without danger.

Further, unlike the related 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 advance 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, the upper slide fitting 8 and the lower slide
With the plurality of temporary fixing members 3 slid and moved forward through the metal fittings 9 to prevent the earthing body 2 from falling down,
Since the fixing frame 10 is disposed from the rear of the temporary fixing member 3, the fixing frame 10 for preventing the side collapse of the excavation hole is disposed as in the related art. Frame 10
A person enters the drilling hole where no
It is not necessary to perform the work of arranging the fixing frame 10, and the provisional fixing member 3 always exists when the fixing frame 10 is arranged, so that there is no danger in the operation and the work can be performed safely.

As described above, the present invention is very practical because it is simple equipment, has no noise or vibration, has high safety, has a very high working efficiency, and can form a slot at low cost. Slotted hole forming method.

[0020]

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 disposed 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 has a structure in which two 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, 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
The support members 3 provided on both sides of the jack 4 press and support the retaining plate 2 from the side by extending the jack 4, and the support members 3 provided on both sides of the jack 4 separate 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, 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 jack 4 provided between them is contracted and the support members 3 provided on both sides of the contracted jack 4 are moved forward, the earth retaining plates 2 are sequentially arranged between the support member 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 member 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 supporting members 3 is inserted from one end of a pipe (cutting lot) 5 and installed therein, and a plurality of holes 6 are formed 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 member 3 is appropriately attached to the upper support member 3 so that the upper support member 3 and the lower support member 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 formed. 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 by 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 sides 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 material 3 is disposed. 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 between the lower supporting 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. 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 3 is contracted to allow the upper support 3 to be slidable, and then the upper support 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 support member 3 is extended, and the upper support member 3 is held and fixed by being pressed between the arranged earth retaining plates 2 on both sides of the excavation hole in a pressed state.

Subsequently, from the rear side of the support member 3, a fixed frame 10 is sequentially disposed between the disposed earth retaining plates 2, and the arranged earth 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 to allow the lower support 3 to be slidable. 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 3 and both side surfaces of the excavation hole while alternately moving the upper support 3 and the lower support 3 forward. 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 is preferably made of an earth retaining sheet pile in order to make the driving operation easier, and a wide lightweight rope sheet pile is preferably used in order to further improve the working efficiency.

In this embodiment, as described above, after the predetermined number of the retaining plates 2 are provided on both sides 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, supporting members 3 for supporting the earth retaining plate 2 disposed on the side surface of the slot from the side surface are 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, it is not necessary to perform a work such that a person enters the excavation hole and disposes 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 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, since one end of the jack 4 provided between the support members 3 is connected to the support member 3 via 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.

Further, a plurality of holes 6 are provided in the length 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.

Also, the upper support member 3 and the lower support member 3 can be locked to each other in the vertical direction.
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, a 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, and when the work is completed, the supporting material 3 is removed. 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, supporting material 4 holding member, jack 5 tube 6 hole 7 locking member 8 upper slide metal fitting 9 lower slide metal fitting 10 fixed body, fixed frame

Claims (7)

(57) [Claims] 1. A method for 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 the specified number of earth retaining bodies, support the installed earth retaining bodies from the inner surface
Upper slide that extends forward and locks slidably with each other
Up and down multiple via ride hardware and lower slide hardware
Disposed temporarily fixed member formed by stacking, the temporary fixing member and then continuously to the distribution設済earth retaining member between the wellbore and disposed earth retaining body, distribution設済earth retaining body one temporary fixation member After supporting by the full length,
A method of forming a slot, comprising: disposing a fixed body that supports the disposed earth retaining body from the inner surface, and moving another temporary fixing member forward. 2. A method for forming a slot by digging the ground, arranging an earth retaining plate on a side face of the digging hole, and repeating the above process to form a slot. Temporary fixing members that support the earth retaining plate to slide from the side
Via the upper slide bracket and the lower slide bracket
A plurality of steps are provided in the vertical direction, and the temporary fixing members provided in the plurality of steps are alternately slid and moved forward, and along with the movement of the temporary fixing member, the earth retaining plate is placed from the side behind the temporary fixing member. A slot forming method characterized by disposing a fixed frame to support. 3. 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 a slot is formed by repeating the excavation. another supporting member for supporting the earth retaining plate arranged on the side surface from the side surface
Upper slide bracket and lower slide to lock freely
Provided at least in upper and lower two stages via the Id metal fittings, between the upper support material and between the lower support material, a holding member is provided, and by extending the holding member, the support materials on both sides of the holding member can hold the earth plate from the side. It is configured such that the supporting members on both sides of the holding member are separated from the retaining plate by pressing and supporting and contracting the holding member, and when forming the slot, at least one of the supporting members provided in the upper and lower two stages After shrinking the holding member provided therebetween and disposing the earth retaining plate between the supporting member and the excavation hole while moving the support members on both sides of the contracted holding member forward, the holding member is extended. Pressing and supporting the earth retaining plate from the side with the support material,
Subsequently, the holding member provided between the other support members is contracted, and while the support members on both sides of the contracted holding member are moved forward of the one support member, the retaining member is held between the support member and the excavation hole. After arranging the plate, the holding member is extended to press and support the earth retaining plate from the side with the support material, and while the contraction and extension of the holding member provided between the support materials are repeated, one support is provided. A method for supporting an earth retaining body in a slot forming method, wherein a material and another supporting material are alternately moved forward to sequentially arrange earth retaining plates. 4. A method for supporting an earth retaining body in a slot forming method of excavating the ground, arranging an earth retaining plate on a side surface of the excavating hole, and repeatedly forming the excavation hole, the method comprising: At least two upper and lower supporting members that support the earth retaining plate arranged on the side from the side are provided, and the upper supporting member and the lower supporting member
Upper support so that materials can be locked to each other vertically
Upper slide bracket for material, lower slide metal for lower support
The upper support material and the lower support material are alternately
It is configured to be able to slide forward and to move forward, and a jack is provided between the upper support material and the lower support material, and the jack is extended, so that the support material on both sides of the jack presses the earth retaining plate from the side Then, the support material on both sides of the jack is configured to be separated from the earth retaining plate by contracting the jack, and when forming the slot, it is provided between at least one of the support materials provided in at least two upper and lower stages. After retracting the jack, 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 and the retaining plate is laterally supported by the supporting material. From the pressure support,
Subsequently, the jack provided between the other supporting members is contracted, and while the supporting members on both sides of the contracted jack are moved forward, the earth retaining plate is disposed between the supporting member and the excavation hole. To extend and support the earth retaining plate from the side by the support material, and alternately move one support material and the other support material forward while repeating the contraction and extension of the jack provided between the support materials. A method for supporting a retaining body in a slot forming method, wherein the retaining means is moved and a retaining plate is sequentially disposed. 5. A method for supporting a soil retaining body according to claim 4 , 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. 6. The method for supporting a soil retaining body in the slot forming method according to claim 5 , wherein a plurality of holes are provided in a length 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 7. A method of supporting a soil retaining body in the slot forming method according to any one of claims 4 to 6 , further comprising the step of: 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.