JP2000303469A - Slide panel earth retaining support - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slide panel earth retaining support having safe and high working efficiency in an earth-retaining support as a panel earth retaining wall for preventing the collapse of a bedrock of an excavated channel excavated for embedding a pipe or the like in the ground. SOLUTION: An earth retaining support 8 includes an inside panel assembly 1 and a pair of outside panels 2. The inside panel assembly 1 is connected to a pair of inside panels 3 with struts 4 making a total of four having two struts each of upper and lower steps. The inside panel assembly 1 is vertically slidable to the outside panels 2. The inside panel assembly 1 and the outside panels 2 are built up before excavation work is carried out, and the earth retaining support 8 is dropped into an excavated channel in an excavation site. Thereafter, when excavation is made from between both inside panels 3, the inside panel 1 is slid downward. The sliding of the inside panel assembly 1 is controlled by wires 7. The outside panels 2 are so hung by hanging devices 6 that they can not drop into the excavated groove.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to earth retaining supports for excavation trenches.

[0002]

2. Description of the Related Art Conventionally, in order to prevent collapse of the ground, two or more sets of ladders are attached to a slide rail by attaching two or more notches to a slide rail as a soil retaining support using a panel. Set it in the excavated ditch, then fit one end of the left and right panels into the slide rails.
Insert the set of slide rails into the other ends of the left and right panels, extrude the box-shaped inside while pushing in the panel and slide rails in order, and repeat this work to sink the panel soil to the specified depth There is.

In this method, the panel is usually moved up and down 2
The lower panel is called an edged panel, and the upper panel is called an extension panel. When the depth of the excavation groove exceeds 5 m, a double rail having two slide-panel insertion grooves may be used.

[0004]

In this conventional earth retaining shoring, after pre-digging as shown in FIGS. 5, 6, 7, 8, and 9, a slide rail is set in front of a digging groove, and To
By inserting one end of the edged panel having an edge at the lower end of the panel into the left and right slide rails, and subsequently setting the rear slide rail on the other end of the edged panel, a stable box-shaped It will be a shore support,
During this work, first, when inserting the panel with an edge into the front slide rail, and during the work of setting the rear slide rail with the other end free,
Difficult and dangerous work occurs.

[0005] In addition, when the front slide rail is pushed further below the ground surface after the rear slide rail is set up, or when the extension panel is inserted after the edged panel is pushed below the ground surface, the same applies. Is difficult and dangerous. Furthermore, when excavating to a predetermined depth, the panels and slide rails are pressed down by the bucket of the excavator, and especially when double rails are used for the slide rails, the excavation surface is stabilized at a predetermined depth from the ground surface. There is a problem that the outer panel to be made falls down below the ground surface due to vibration or the like when the inner panel is pressed down.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has an earth retaining wall having a panel for preventing collapse of a ground wall of an excavation trench excavated for burying a pipe or the like underground. It is an object of the present invention to provide a safe and efficient work. Another object of the present invention is to provide a stopping device for preventing two panels from sliding further when two sliding retaining panels slide to a predetermined positional relationship, and a retaining panel having the same. Aim.

[0007]

Means for Solving the Problems and Effects of the Invention According to the first aspect of the present invention, a panel for preventing collapse of a ground wall of an excavation trench excavated for burying a pipe or the like underground is used as a retaining wall. In the earth retaining work, a pair of outer panels and an inner panel assembly that slides up and down on the inner surface of the outer panel, wherein the inner panel assembly is assembled at a stage before excavation work or in a factory. A pair of inner panels arranged in parallel at predetermined intervals are connected by at least two or more cutting members to form a stable box-shaped inner panel assembly. When the inner panel assembly slides downward, the inner panel assembly slides downward with respect to the outer panel so that the overlap dimension between the lower part of the outer panel and the upper part of the inner panel assembly does not become smaller than a predetermined dimension. Stop device to stop the A sliding panel type earth retaining shoring, characterized in that it comprises and.

According to a second aspect of the present invention, the upper ends of the pair of outer panels are connected to each other by a cutout attached before the excavation work or in the factory. It is a mechanic. The invention according to claim 3 is
3. A guide for guiding sliding of the inner panel assembly with respect to the outer panel is provided on the outer panel or the inner panel assembly so that the inner panel assembly slides vertically with respect to the outer panel. The slide panel type earth retaining support described in (1).

According to a fourth aspect of the present invention, each of the notches is
2. An extensible cut-out having a variable length.
A slide panel type earth retaining support according to any one of the above-mentioned items. In the invention according to claim 5, the upper portion of the outer panel projects substantially perpendicularly from the outer surface of each outer panel in order to prevent the outer panel from falling below a desired position in the digging groove, The slide panel type shoring according to any one of claims 1 to 4, further comprising a suspension device abutting on the ground surface.

[0010] The slide panel type earth retaining support of the present invention comprises:
Prior to the drilling operation or in the factory, the inner panel assembly is first made. In the inner panel assembly, a pair of inner panels are connected by a notch so that their inner surfaces face each other at a predetermined interval. A pair of outer panels is combined with the inner panel assembly. The outer panel and the inner panel are assembled together by sliding along a guide rail provided on the outer panel or the inner panel.

The integrated slide panel type earth retaining structure is carried to the site and dropped into a pre-drilled excavation trench. Thereafter, a digging groove is further excavated by an excavating machine from the inside of the earth retaining structure, that is, between the pair of inner panels, and the inner panel assembly is dropped downward by the excavated amount. At this time, for example, the upper part of the outer panel is fixed to the ground surface by a suspension device so that the outer panel does not fall into the excavation groove. Therefore, the inner panel assembly slides downward with respect to the outer panel. As a result, a stable box-shaped inner panel assembly can be flexibly sunk to a predetermined depth within the limit excavation depth of the earth retaining structure.

Further, in the earth retaining structure according to the present invention, the cutting edge of the inner panel assembly also functions as the cutting edge of the outer panel via the inner panel within the limit excavation depth of the earth retaining structure. In addition, the notch of the inner panel assembly also receives the earth pressure on the outer panel. Therefore, there is no need to cut, for example, the lower side of the outer panel, and the configuration is simple and easy to handle. If the cut length is made adjustable,
Applicable to various excavation trenches.

The upper part of the outer panel may be connected by a cutout to receive the earth pressure applied to the outer panel. At least below the outer panel, as described above, the inner panel assembly also functions as a cut of the outer panel, so that it is not necessary to connect with the cut.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A slide panel type earth retaining structure according to an embodiment of the present invention will be described below in detail with reference to FIGS. FIG. 1 is a front view of a state where a slide panel type retaining structure 8 according to an embodiment of the present invention has been dropped into a pre-drilled excavation groove, and FIG. 3 is a side view thereof. FIG. 2 shows that after the earth retaining structure 8 has been dropped into the excavation trench, further excavation is performed, and
FIG. 5 is a front view of a state in which is slid downward. FIG. 4
Is a side view thereof.

As shown in the installation front view of FIG. 1, a slide panel type digging groove retaining support according to one embodiment of the present invention comprises an inner panel assembly 1 and an outer panel 2, and the inner panel assembly 1 is a pair. The inner panel 3 is connected by a total of four notches 4 in each of the upper and lower rows, and a safe space is secured in the left and right inner panels. The pair of outer panels 2 are each provided with a suspension device 6 at the upper end thereof. The suspension device 6 is for preventing the outer panel 2 from entering the ground unnecessarily. In order to realize the function, the suspension device 6 of this embodiment has an arm 12. The arms 12 project substantially perpendicularly from both ends of the outer panel 2 and are arranged on the ground surface.

A slope 11 is provided below the inner panel 3 so that the lower end of the outer panel is sharpened so that the inner panel assembly 1 can easily sink. On the outer panel 2, along both sides,
A vertically extending guide rail 5 is provided. Both sides of the inner panel 3 can be fitted into the guide rails 5 to guide the inner panel 3 to slide up and down with respect to the outer panel 2. Before the excavation work or in the factory, the inner panel assembly 1 and the outer panel 2 are integrated so that the inner panel assembly 1 slides along the guide rails 5 of the outer panel 2, and a slide panel type retaining sill is provided. Complete Shoring 8

Then, the slide panel type earth retaining structure 8 is carried into the excavation site, lifted by a crane, a backhoe, or the like, and dropped into a pre-drilled trench by the backhoe.
Due to the suspending devices 6 provided at the upper end portions of the pair of outer panels 2, the outer panels 2 fall to almost the same position as the ground surface GL, but do not fall further. In the present embodiment, the suspension panel 6 is used to suspend the slide panel type earth retaining structure 8, more specifically the outer panel 2, from the beginning. In the meantime, while excavating the inside of the inner panel assembly 1, the entire slide panel type earth retaining structure 8 is lowered, and the arm of the suspension device 6 provided on the outer panel 2 is moved to the ground surface GL.
This operation may be performed until the user comes in contact with.

Next, the inside of the slide panel type earth retaining structure 8 is further excavated with a backhoe or the like. When the pair of outer panels 2 are suspended and the inner panel 3 is further slid downward, the notch 4 is set at a predetermined position above the outer panel 2 (shown by a two-dot chain line in FIG. 2). The installation of the cutting 4 may be performed before the excavation work or in the factory.

By sliding the inner panel assembly 1 downward, the inner panel assembly 1 is sunk at a predetermined position within the limit excavation depth of the slide panel type excavation groove retaining support. A ring 9 is provided at an arbitrary position on each of the upper end portions of the inner and outer panels 2 and 3, and is connected by a wire 7 having a predetermined length between them, and a limit excavation depth of the earth retaining support is provided. Inside, the lower end of the outer panel 2 and the upper end of the inner panel 3 do not slide down the inner panel assembly 1 below a predetermined overlap dimension. That is, the wire 7 operates as a stop device (see FIG. 2).

After performing necessary works such as piping in the excavation trench, the inner panel assembly 1 is slid upward, and the submerged inner panel assembly 1 is pulled up to its original position. Fill back near the bottom of the slide panel type earth retaining structure 8. The slide panel type earth retaining structure 8 is excavated from the excavation trench with a crane,
Gradually or if the wall is stable, pull up at once and fill the trench. According to the above-described slide panel type earth retaining structure according to one embodiment of the present invention, by integrating the outer panel 2 and the inner panel assembly 1,
While carrying them together in a stable state, they are brought to the excavation site, dropped into the pre-drilled excavation trench, and while excavating in the slide panel type earth retaining structure 8, the inner panel assembly 1 is slid downward by the excavated amount. The stable box-shaped inner panel assembly 1 can be laid down at a predetermined depth. Therefore,
When inserting a panel with an edge into the front slide rail, as in the case of earth retaining shoring using conventional panels, and during the work of setting the rear slide rail with the other end free Without difficulty and danger.

Also, when the front slide rail is further pushed below the ground surface after the rear slide rail is set up, or when the extension panel is inserted after the edged panel is pushed below the ground surface, There is no difficulty and danger as well. In addition, when the slide rail is a double rail, in particular, when the outer panel that wants to stabilize the excavated surface at a predetermined depth from the ground surface, when the inner panel is pressed by a backhoe bucket or the like, a common inner and outer panel is used. Although an influence such as falling due to vibration or the like due to the slide rail being set up occurs, according to the present embodiment, since the stopping device is operated, such a disadvantage is solved, and work efficiency can be greatly improved.

Further, in the removal work, first, only the inner panel assembly 1 is raised to almost the same height as the outer panel 2 and then the whole 8 is raised, so that the load on the crane and the backhoe used for the removal can be further reduced, and the capacity can be reduced. Since a smaller crane or backhoe can be used, the removal cost is further reduced, and the device can be used even on a smaller site. FIG. 10 is a perspective view showing a use state of a slide panel type earth retaining structure according to another embodiment of the present invention. The earth retaining shoring 20 according to this embodiment also includes a pair of outer panels 21 and an inner panel assembly 22. The inner panel assembly 22 has a pair of inner panels 23 and four notches 24 connecting the pair of inner panels 23.
Each of the outer panel 21 and the inner panel 23 has a configuration in which the outline (frame) is formed of a square pipe, and a corrugated plate 25 made of, for example, aluminum is fitted therein.

The earth retaining structure 20 of this embodiment is provided with a ring 26 for inserting a pipe above the outer panel 21. By inserting a pipe 27 through this ring 26 and bridging both ends of the pipe 27 to the ground surface GL, the earth retaining structure 20 can be hung. That is, in this embodiment, the suspension device is configured by the ring 26 and the pipe 27. FIG. 11 is a diagram showing a state in which one of the inner panel 23 and the outer panel 21 is viewed from between the inner panel assemblies 22.

Referring to FIG. 11, the outer panel 2
In 1, a frame is formed by an upper horizontal beam 28, a lower horizontal beam 29, a right vertical beam 30, a left vertical beam 31, and a central vertical beam 32. Each of the beams 28 to 32 is formed of, for example, an iron pipe. A corrugated plate (panel) 33 made of, for example, aluminum is mounted in a frame surrounded by the beams 28 to 32. Similarly to the outer panel 21, the inner panel 23 has a frame formed by the upper horizontal beam 34, the lower horizontal beam 35, the right vertical beam 36, the left vertical beam 37, and the central vertical beam 38, and a corrugated sheet (panel) 39 is provided in the frame. Is attached. Further, a blade beam 41 having a sharp lower end is fixed to a lower portion of the inner panel 23 below the lower horizontal beam 35 by, for example, welding.

The right vertical beam 30 and the left vertical beam 3 of the outer panel 21
1 is provided with a slide guide 42. The slide guide 42 connects the outer panel 21 to the inner panel 2.
3, the horizontal cross-sectional shape is L-shaped so as to hold each of the right and left horizontal beams 36 and 37 of the inner panel 23. With this slide guide 42,
The outer panel 21 and the inner panel 23 (inner panel assembly 2)
2) slides up and down. In this embodiment, the slide guide 42 is provided on the outer panel 21. Conversely, the slide guide 42 is provided on the inner panel 23, and the slide guide 42 provided on the inner panel 23 is
The structure which holds the outer panel 21 may be sufficient.

The cross section of the slide guide is not limited to the L-shape, but may be a U-shape, a T-shape, or the like, or a vertically elongated slit groove and a T-shaped projection fitted into the slit groove. It may be something like In short, any structure that guides the inner panel 23 to slide up and down with respect to the outer panel 21 may be used. The outer panel 2 is provided on the left and right sides above the outer panel 21.
The cut 43 can be retrofitted to one. For this reason, concave portions 44 are formed on the left and right sides of the upper end of the inner panel 23 so as not to overlap with the left and right sides of the upper end of the outer panel 21. This has the advantage that after the outer panel 21 has been fitted into the inner panel assembly 22, the upper ends of the outer panel 21 can be connected by the notches 43.

FIG. 12 is a sectional view taken along the line AA of FIG. When the inner panel 23 is slid downward with respect to the outer panel 21,
A stop device is provided for stopping the sliding of the inner panel 23 below the outer panel 21 so that the overlapping dimension between the lower part of the outer panel 21 and the upper part of the inner panel 23 does not become smaller than a predetermined dimension. . With reference to FIG. 12, a stopping device according to this embodiment will be described.

The stop device 50 is disposed in the inner panel 23, for example, in the upper cross beam 34, and includes a support shaft 51 and a support shaft 5.
It includes a pendulum 52 that can swing around the center 1 and a stopper 53 for restricting the movement of the pendulum 52 at a predetermined position. The pendulum 52 is supported by a support shaft 51 at a position deviated from the center of gravity, and is swingable about the support shaft 51. Then, in the natural state, the pendulum 52 is rotated by its own weight so that the lower left portion in the figure is lowered. The stopper 53 limits the rotation of the pendulum 52 due to its own weight. That is, the pendulum 52 is stopped in the state shown by the solid line in FIG. In this state, a part of the pendulum 52 is configured to protrude toward the outer panel 21 from the inner panel 23, more specifically, the surface of the upper cross beam 34 facing the outer panel 21. The lower side 55 of the protrusion 54 extends substantially horizontally. Therefore, when the inner panel 23 slides downward with respect to the outer panel 21, the lower side 55 of the pendulum 52 is
And the inner panel 23 cannot slide downward any further.

On the other hand, the outer panel 21 and the inner panel 23
Is slid upward, even if the projection 54 of the pendulum 52 hits the upper cross beam 28 of the outer panel 21, the inner panel 23 can be slid upward as it is. This is because the pendulum 52 can swing around the support shaft 51,
In FIG. 12, there is no member that prevents swinging in the clockwise direction. Therefore, even if the projection 54 of the pendulum 52 hits the upper cross beam 28 of the outer panel 21, if the inner panel 23 is slid upward as it is, the pendulum 52 will be in a state shown by a broken line, and the inner panel 23 Can be removed.

According to the same principle, when the outer panel 21 is fitted into the inner panel assembly 22, if the outer panel 21 is inserted from above the inner panel 23, the pendulum 52 does not interfere with the outer panel 21 and It can be combined with the inner panel 23. The upper side of the pendulum 52 protruding toward the outer panel 21 is tapered so as to point toward the tip (the upper side may be slightly convexly curved as shown in the figure, or may be straight). . Thus, when the upper side hits the upper cross beam 28 or the like, the pendulum 52 is easily rotated.

When the upper cross beam 34 of the inner panel 23 is located between the upper cross beam 28 and the lower cross beam 29 of the outer panel 21, the pendulum 52 is under its own weight and is in a solid line state in FIG. Therefore, when the outer panel 21 and the inner panel 23 are combined, the stopping device 50 automatically functions so as to prevent the inner panel 23 from dropping downward with respect to the outer panel 21. Therefore, after assembling the outer panel 21 and the inner panel 23, a worker or the like does not need to operate the stopping device 50 in particular, and the operation of the stopping device 50 is not forgotten.

In the configuration shown in FIG. 12, an example is shown in which the stopping device 50 is provided on the inner panel 23. However, as shown in FIG. 13, the stopping device 50 may be provided on the outer panel 21. The shape of the pendulum 52 of the stop device 50 is not limited to the illustrated one, but may be any shape that can prevent the inner panel 23 from falling off in a predetermined direction with respect to the outer panel 21 by a part of the protrusion 54. I just need.

In the above description, the projection 54 of the pendulum 52 hits the cross beam and the sliding is stopped. However, the projection 5 of the pendulum 52 is placed at an arbitrary position instead of the cross beam.
By providing a positioning member against which the outer panel 21 and the inner panel 23 overlap, the overlapping dimension of the outer panel 21 and the inner panel 23 can be adjusted regardless of the thickness of the cross beam. FIG. 14 is a front view showing a configuration of a shoring support according to still another embodiment of the present invention,
FIG. 15 is a plan view, and FIG. 16 is a longitudinal sectional view along AA in FIG.

Referring to FIGS. 14 to 16, this earth retaining structure 60 includes two panels 61 and 62. The panel 61 is an outer panel arranged upward in the digging groove, and the panel 62 is an inner panel slid downward in the digging groove. The outer panel 61 and the inner panel 62 are guided by double rails 63 on both side edges, respectively, and can slide up and down. A vertically extending guide groove 6 is formed on the inner surface of the outer panel 61 (the surface facing the inner panel 62).
5 are provided. In this embodiment, the guide groove 65
Are provided on both the left and right sides of the outer panel 61, but may be provided on only one of the sides. Alternatively, the guide groove 65 may be provided so as to extend vertically, for example, at the center of the inner surface of the outer panel 61.

A collision piece 66 is fixed to the lower end of the guide groove 65. On the other hand, the outer surface of the inner panel 62 (the outer panel 6
A stop device 50 is provided on the surface (opposite surface 1) so as to correspond to the guide groove 65. The stopping device 50
It has the same configuration as the device described with reference to FIG. That is, the pendulum 52 includes a pendulum 52 that can swing about the support shaft 51 and a stopper 53 for restricting the movement of the pendulum 52 at a predetermined position. And is swingable about the support shaft 51. And in the natural state, the pendulum 52
Is rotated by its own weight so that the lower right in FIG. 16 is lowered. The stopper 53 limits the rotation of the pendulum 52 due to its own weight. A part of the pendulum 52 is
And a lower side of the protrusion 54 extends substantially horizontally. Therefore, FIG.
When the inner panel 62 slides downward with respect to the outer panel 61, the protrusion 54 of the pendulum 52 collides with the collision piece 66, and the inner panel 62 can slide further downward with respect to the outer panel 61 as shown in FIG. Disappears.

It should be noted that the outer panel 61 and the inner panel 62
When the inner panel 62 is slid from below, the pendulum 52 rotates to the left in FIG. 16, so that the pendulum 52 does not hinder the outer panel 6.
One inner panel 62 can be combined. As described above, the stopping device 50 is different from the soil retaining structure according to the embodiment described with reference to FIGS.
As described with reference to FIG. 16, slide panels 61 and 62 using a conventional so-called double slide rail 63.
It can also be applied to

The remaining configuration of the embodiment shown in FIGS. 14 to 16 will be further described. On the upper edge of the outer panel 61,
A suspension plate 67 is fixed so as to protrude left and right.
The outer panel 62 has a double slide rail 6 for the suspension plate 67.
In order to prevent the outer panel 61 from sliding further downward when the upper edge of the outer panel 62 slides to a position coincident with one end of the double slide rail 63 when the outer panel 61 slides while being inserted into the third slide rail 63. Is provided.

As shown in FIG. 15, two parallel grooves 68 and 69 are formed in the double slide rail 63, respectively. The outer panel 61 has both ends fitted in the grooves 68 and slides along the grooves 68. The inner panel 62 has both ends fitted in the grooves 69, and
Slide along 9 In the above description, the stopping device 5
0 described the example provided on the inner panel 62. However, as described above with reference to FIG.
And a collision piece may be arranged on the inner panel 62 side.

The stop device 50 has a configuration in which the projecting portion 54 of the pendulum 52 collides with a collision piece 66 provided on the outer panel 61. Alternatively, the projecting portion 54 of the pendulum 52 may have a double slide rail 63. May be configured to collide with the collision piece arranged in the first position. In this way, for example, the sliding position of the inner panel 62 can be limited not by the relationship with the outer panel 61 but by the relationship with the double slide rail 63. In this case, since the slide position of the outer panel 61 with respect to the double slide rail 63 is limited by the suspension plate 67, even in this case, the positional relationship between the outer panel 61 and the inner panel 62 eventually becomes a predetermined position. It can be restricted so as not to slide beyond the overlapping position.

Further, the stopping device 5 including the pendulum 52
0 is attached to the double slide rail 63 and the pendulum 52
When the panel (which can be applied to either the outer panel or the inner panel) slides to a predetermined position with respect to the double slide rail, the slide may be stopped by the projecting portion 54. In the above-described stop device 50, the pendulum 52 is configured to rotate by its own weight. However, an elastic biasing unit such as a spring or rubber is provided, and the pendulum 52 is always rotated in a predetermined direction by the elastic biasing unit. May be energized. In this case, the support position of the pendulum 52 by the support shaft is
Any position may be used.

The present invention is not limited to the embodiments described above, and the present invention can be variously modified within the scope of the claims.

[0042]

According to the present invention, safety is high, and
It is possible to provide a shoring work with good work efficiency. In particular, since the inner panel is assembled before the excavation work or in the factory, the inner panel is assembled and the outer panel is fitted into the inner panel, so that when the earth retaining structure according to the present invention is dropped into the excavation groove, the entire earth retaining structure is required. Can be dropped by hanging it with a crane or backhoe, and there is no need to assemble the outer panel or inner panel.
High safety. In addition, the workability at the site and the removal property are also excellent.

Further, according to the present invention, it is possible to provide a panel stopping device capable of reliably stopping the retaining panel so that the retaining panel does not slide beyond a predetermined positional relationship.

[Brief description of the drawings]

FIG. 1 is an installation front view (when a slide is reduced) of the present invention.

FIG. 2 is an installation front view (when a slide is extended) of the present invention.

FIG. 3 is an installation side view of the present invention (when the slide is reduced).

FIG. 4 is an installation side view of the present invention (when the slide is extended).

FIG. 5 is an installation side view of the conventional method (when the front slide rail is set up).

FIG. 6 is an installation side view of the conventional method (when a panel with an edge is inserted into a front slide rail).

FIG. 7 is an installation side view of the conventional method (when the rear slide rail is set up).

FIG. 8 is an installation side view of the conventional method (when a panel with an edge is inserted into a rear slide rail).

FIG. 9 is an installation side view of the conventional method (when an extension panel is inserted).

FIG. 10 is a perspective view showing a use state of a slide panel type earth retaining structure according to another embodiment of the present invention.

FIG. 11 is a view for explaining a configuration of a slide panel type earth retaining structure according to another embodiment of the present invention.

FIG. 12 is a view for explaining a stopping device,
It is sectional drawing which follows A.

FIG. 13 is a diagram showing another configuration of the stop device.

FIG. 14 is a front view showing a configuration of a shoring support according to still another embodiment of the present invention.

FIG. 15 is a plan view showing a configuration of a shoring support according to still another embodiment of the present invention.

FIG. 16 is a longitudinal sectional view taken along AA of FIG. 14;

[Explanation of symbols]

 1, 22 Inner panel assembly 2, 21 Outer panel 3, 23 Inner panel 4, 24, 43 Cutting 5 Guide rail 6 Suspension device 7 Wire (inner panel sliding stop device) 8 Sliding panel type dome 9 Ring 10 Carry in / out Wire 26 Ring 27 Pipe 42 Slide guide 50 Stopper 51 Support shaft 52 Pendulum 53 Stopper 54 Projection 55 Lower side

Claims (5)

[Claims] An earth retaining wall comprising a panel for preventing collapse of a ground wall of an excavation trench excavated for burying a pipe or the like underground, a pair of outer panels, and a pair of outer panels. An inner panel assembly that slides vertically on the side,
The inner panel assembly is assembled at a stage before the excavation work or in a factory, and a pair of inner panels arranged in parallel at a predetermined interval is connected by at least two or more cutting members and is stable. A box-shaped inner panel assembly, and further, when the inner panel assembly slides downward with respect to the outer panel, the overlap dimension between the lower part of the outer panel and the upper part of the inner panel assembly is equal to or less than a predetermined dimension. And a stop device for stopping the inner panel assembly from sliding downward with respect to the outer panel so as not to become sloping. 2. The slide panel type shoring system according to claim 1, wherein upper ends of the pair of outer panels are connected by a cutout attached at a stage prior to an excavation operation or in a factory. 3. The outer panel or the inner panel assembly includes: an inner panel assembly that slides up and down with respect to the outer panel;
3. The slide panel type earth retaining support according to claim 1, wherein a guide for guiding sliding of the inner panel assembly with respect to the outer panel is provided. 4. The slide panel type retaining support according to claim 1, wherein each of the cuts is an extendable cut whose length can be varied. 5. An upper portion of the outer panel extends substantially at a right angle from an outer surface of each outer panel to prevent the outer panel from falling below a desired position in the digging groove. The slide panel type retaining support according to any one of claims 1 to 4, further comprising a hanging device to be abutted.