JP2001003370A - Spraying slope-frame excavating construction method for slope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent simple collapse by a landslide or the like of a slope by holding the slope by a slope frame supported by biting into a ground on the inside of the slope when a surface-layer slide, the landslide, a slide by weathering or the like are generated on the surface side of the slope by improving integrallity with the slope by supporting the slope frame biting into the ground on the inside of the slope. SOLUTION: A plurality of vertical ditches 2 and lateral ditches 3 are excavated at regular pitches in the longitudinal and lateral directions on the surface of the slope such as a ground while the vertical ditches 2 are excavated deeply, and a protective frame 4 is formed onto the excavated ditch internal surfaces. Reinforcing materials 5 are arranged crosswise into the ditches after the formation of the protective frame 4, and mortar or concrete is sprayed and filled into the ditches while the surface of a slope frame 1 formed by spraying and filling is formed in height the same as or slightly projected from the surface of the slope such as the ground.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a slope by spraying mortar or concrete on a slope such as a ground or the like to reinforce the slope. The surface side of the slope is, for example, surface slip, landslide,
In the event of slippage due to weathering, the slope that is supported by digging into the ground inside the slope to maintain the slope and prevent the slope from easily collapsing due to landslides, etc. It relates to the spraying method frame excavation method.

[0002]

2. Description of the Related Art Conventionally, in order to prevent slope collapse and to stabilize the slope, a mortar or concrete is sprayed on the slope surface to be laminated and hardened. A construction method is known in which a slope is constructed and the slope is reinforced with a slope constructed on the slope surface.

[0003]

However, a method frame constructed by spraying mortar or concrete onto the surface of a slope such as a ground and laminating and hardening the same is only required to be laminated on the surface of the slope. It is not supported by digging into the ground inside the surface. For this reason, the integration with the slope is weak, and when the slope causes surface slip, landslide, slip due to weathering, etc., the slope made of mortar, concrete, etc. formed on the slope becomes the slope that causes the landslide. The landslide occurs along with the surface of the slab, and the slope reinforced with the slab collapses immediately, and the mortar, concrete, etc. that form the slab fall down and become extremely dangerous, and in the worst case In the case of, there was a risk of causing personal injury.

The present invention has been made in view of the above-mentioned problems, and has been made in order to solve the problems. It is an object of the present invention to provide a method in which a lawn frame is cut into the ground inside a slope to be supported. By increasing the integration with the slope, if the surface side of the slope, for example, causes surface slippage, landslides, weathering, etc., the slope supported by digging into the ground inside the slope will reduce the slope. An object of the present invention is to provide a method of excavating a slope by spraying a slope, which can be held and prevented from easily collapsing due to a landslide or the like.

[0005]

In order to achieve the above object, the invention of claim 1 is to provide a plurality of vertical grooves and horizontal grooves at predetermined intervals in the vertical and horizontal directions on the surface of a slope such as the ground. Excavation and deep excavation of the vertical groove, forming a protective frame on the inner surface of the excavated groove, arranging reinforcing materials vertically and horizontally inside the groove after forming the protective frame, and then spraying mortar or concrete into the groove The surface of the legal frame formed by filling and spraying and filling is made to have the same height as or slightly projecting from the surface of the slope such as the ground.

According to a second aspect of the present invention, a plurality of flutes are excavated at predetermined intervals in the lateral direction on the surface of a slope such as a ground, and a protective frame is formed on the inner surface of the excavated flute. After the formation of the protection frame, the longitudinal reinforcement is vertically arranged inside the vertical groove and the reinforcing material for the horizontal reinforcement arranged in the lateral groove inside the vertical groove. Mortar or concrete is then sprayed and filled into the flutes, and the surface of the vertical frame formed by spraying and filling is the same or slightly lower than the surface of the slope such as the ground. After the projecting height, a plurality of horizontal grooves are excavated shallower than the vertical grooves at predetermined intervals in the longitudinal direction between the vertical frames, forming a protective frame on the inner surface of the excavated horizontal groove, After the formation, the reinforcing material for the horizontal frame is laterally arranged inside the horizontal groove, and then mortar or concrete To fill by spraying on the inner lateral grooves, are those made of means in the surface of the transverse process frame formed by the spraying filled at a height equal or slightly protrudes slope surfaces such natural ground.

Here, as a preferred embodiment of the first and second aspects of the present invention, the protective frame may be formed by spraying mortar or concrete on the inner surface of the excavated groove and hardening the same. The protective frame may be formed by attaching a burying sheet to the inner surface of the excavated groove. In addition, the reinforcing material for the flexible vertical frame is arranged in the vertical groove, and one end of the flexible reinforcing material for the vertical frame is extended to the stable ground above the slope to be stable. It may be connected to the ground. In addition, the reinforcing material for the flexible horizontal frame is arranged in the lateral groove, and both ends of the flexible reinforcing material for the horizontal frame are extended to the stable ground on both outer sides of the slope to be stable. It may be connected to the ground. Also, guide grooves are respectively formed in sections from the upper part of the legal frame to the stable ground on the upper side, and a reinforcing material for a vertical vertical frame which is extended and connected to the stable ground in each guide groove is connected. May be laid. In addition, guide grooves are respectively formed in sections from both sides of the legal frame to the stable ground on both outer sides, and reinforcement for a flexible horizontal frame which is extended and connected to the stable ground in each guide groove. Materials may be laid. Further, an anchor may be driven into the vertical groove at predetermined intervals in the ground, and a part of the reinforcing material may be connected to the head of the driven anchor. Further, the vertical groove may be gradually excavated from the upper side to the lower side. Further, the flute may be gradually excavated from the upper side to the lower side, and the lower part may be excavated further deeper. Further, the flutes may be gradually excavated from the upper side and the lower side toward the middle side. Also, the reinforcing material may be made of a flexible wire rope, a PC steel wire bundle, a messenger wire rope, or an aramid fiber rope. Further, a plurality of steel fibers for enhancing the strength of the mortar or concrete may be embedded in the mortar or concrete on which the flexible reinforcing material is arranged.
Further, the reinforcing member may be made of a rigid reinforcing bar.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described more specifically based on embodiments of the invention shown in the drawings.

[Embodiment 1] FIG. 1 is a front view of a slope having a vertical surface and a horizontal groove formed by excavating the surface of the slope, and FIG. FIG. 3 is a partial perspective view of a slope having a groove and a lateral groove formed therein, FIG. 3 is a cross-sectional view in which a vertical groove is formed by excavating the surface of the slope, and FIG. 4 is a cross-sectional view in which a vertical groove is formed by excavating the surface of the slope. FIG. 5 is a cross-sectional view in which a vertical groove is formed by excavating the surface of a slope, and FIG. 6A is a cross-sectional view in which mortar or concrete is sprayed on the inner surface of the groove to form a protective frame.
7B is a cross-sectional view of a groove in which a sheet is attached to the inner surface of the groove to form a protective frame, FIG. 7A is a cross-sectional view of a state in which reinforcing materials arranged on the inner surface of the groove are supported by spacers, and FIG. B) is a plan view of a lawn frame formed from mortar or concrete in which steel fibers are embedded, FIG. 8 is a schematic overall front view of a partly omitted lawn frame, and FIG. FIG. 10A is a schematic overall side sectional view partially omitted with a frame formed.
Is a cross-sectional view when the surface of the slope is the same height as the surface of the slope,
FIG. 10B is a cross-sectional view when the surface of the slope is slightly higher than the surface of the slope.

In the figure, a plurality of longitudinal grooves for spraying and filling mortar or concrete forming a legal frame 1 are formed on a surface a of a slope such as a ground mountain at predetermined intervals in the vertical and horizontal directions, for example, in a lattice shape. Excavate 2 and lateral ditch 3. Mortar or concrete is spray-filled in the vertical groove 2 and the horizontal groove 3 to form a vertical frame 1a and a horizontal frame 1b, respectively.

In this case, the vertical groove 2 is excavated deeper than the horizontal groove 3, and the horizontal groove 3 is excavated shallower. The horizontal frame 1b formed in the horizontal groove 3 excavated shallowly functions simply to connect the vertical frames 1a formed in the left and right vertical grooves 2.

Here, the vertical groove 2 is a groove formed in a vertical direction with respect to the slope, that is, in a direction which can be seen in the vertical direction or the front and rear direction when viewed from the front. The lateral groove 3 is a groove formed in a horizontal direction with respect to the slope, that is, a horizontal direction or a horizontal direction when viewed from the front.

Further, the flute 2 which is deeply excavated may be excavated to a certain depth from the surface a of the slope, or may be excavated gradually from the upper side to the lower side as shown in FIG. As shown in FIG. 4, the excavation is gradually deepened from the upper side to the lower side, and the lower part may be excavated deeper. By gradually excavating the vertical groove 2 toward the lower side, the center of gravity of the vertical frame 1a formed by spraying and filling mortar or concrete into the vertical groove 2 is lowered, and the vertical frame 1a and the horizontal The stability of the legal frame 1 formed by the legal frame 1b is increased.

Further, as shown in FIG. 5, the vertical groove 2 is gradually excavated from the upper side and the lower side toward the intermediate side, that is, the intermediate part of the vertical groove 2 is excavated deepest, and And the lower part may be excavated shallowly. The flute 2 is excavated, for example, in an arcuate shape or a parabolic shape protruding downward at an intermediate portion.

In this case, the vertical frame 1a is formed by spraying and filling mortar or concrete into the vertical grooves 2.
In the middle part, the middle part becomes the deepest, and the bottom part of the deepest middle part becomes deeper than the earth and sand on the lower side. For this reason, the vertical frame 1a
The bottom of the middle part, which has become the deepest against the downward movement of the sand, increases the resistance received from the earth and sand on the lower side, and the vertical frame 1a
The horizontal frame 1b formed by the horizontal frame 1b is unlikely to slide downward.

The vertical grooves 2 and the horizontal grooves 3 are excavated so that the cross sections of the grooves are square. The protection frame 4 is provided on the inner surfaces of the excavated vertical grooves 2 and the horizontal grooves 3, that is, on both side walls and the bottom surface of the grooves.
To form The protective frame 4 performs the function of an embedded mold.

That is, the protective frame 4 prevents the earth and sand on the side surfaces of the vertical groove 2 and the horizontal groove 3 from collapsing, and when the mortar or concrete for forming the legal frame is sprayed and filled, the protective mortar or concrete is filled. It functions to prevent the part or the water contained therein from flowing out into the ground from the inner surface of the groove.

The protective frame 4 is formed by spraying and hardening mortar or concrete on the inner surfaces of the excavated longitudinal grooves 2 and the lateral grooves 3 or the inner surfaces of the excavated longitudinal grooves 2 and the lateral grooves 3. Is formed by attaching a burying sheet to the cradle. Since the protective frame 4 is buried, the legal frame 1
Is formed, the work of removing the protective frame 4 becomes unnecessary,
Accordingly, work efficiency can be improved.

As the sheet of the protective frame 4, a perishable material such as non-woven fabric, paper, cloth or the like is used. The sheet is fixed to the inner surfaces of the vertical grooves 2 and the horizontal grooves 3 by fixing pins 4a and attached. . For example, nonwoven fabric, paper, cloth, etc. used as a sheet of the protective frame 4 serve to prevent the filled mortar or concrete from flowing out in the short term, and also rot and harden mortar or concrete in the long term. It does not hinder the integration of the earth with the ground.

After the protection frame 4 is formed on the inner surfaces of the vertical grooves 2 and the horizontal grooves 3, reinforcing members 5 are vertically and horizontally arranged inside the vertical grooves 2 and the horizontal grooves 3. That is, reinforcing members 5a for vertical frames are arranged inside the vertical grooves 2, and reinforcing members 5b for horizontal frames are provided inside the horizontal grooves 3.
Is arranged. The vertical frame reinforcing material 5a and the horizontal frame reinforcing material 5b arranged in the vertical and horizontal directions are connected to each other at a position where the vertical direction and the horizontal direction intersect with each other by a connecting tool such as a cross clip.

The reinforcing member 5 is buried in the mortar or concrete forming the slab 1 and functions to increase the strength of the slab 1 formed of mortar or concrete.
In the vertical groove 2, reinforcing members 5a for the vertical frame and a reinforcing member 5a for the vertical frame having a larger diameter than those in the horizontal groove 3 are arranged.

The reinforcing member 5 includes a flexible member and a rigid member. As the flexible reinforcing member 5, for example, a wire rope, a PC steel wire bundle, a messenger wire rope, or an aramid fiber rope is used. In addition to the above, for example, a chain, a high-strength corrosion-resistant cable such as a high-strength carbon fiber or nylon can be used as the flexible reinforcing member 5. As the rigid reinforcing member 5, for example, a reinforcing bar is used.

When a flexible member is used for the reinforcing member 5, a long member can be used, and there is no need to connect along the way like a reinforcing bar, and the seamless reinforcing member 5 can be used. A decrease in strength at the seam can be avoided. Further, when the reinforcing material 5 is flexible, even if the vertical groove 2 and the horizontal groove 3 follow the uneven surface a of the ground and the groove is formed in a vertically curved shape, the vertical groove 2 and the horizontal groove 3 follow this. Bars can be easily arranged.

When a flexible member is used for the reinforcing member 5, a spacer 5c for supporting the reinforcing member 5 is provided in the longitudinal groove 2 in order to arrange the reinforcing member 5 accurately. And lateral groove 3
Are placed at appropriate intervals inside the As the spacers 5c, inspection pins arranged inside the vertical grooves 2 and the horizontal grooves 3 for inspection may be used.

When the flexible reinforcing material 5 is arranged, the mortar or concrete that forms the frame 1 is
A plurality of steel fibers 5d for increasing the strength of the mortar or concrete are buried uniformly throughout. The strength of the mortar or concrete, particularly the bending stiffness and the torsional stiffness, can be increased by the embedded steel fibers 5d.

If necessary, one end of the flexible vertical frame reinforcing material 5a arranged in each vertical groove 2 extends to a stable ground b above the legal frame 1, respectively. May be connected to the stable ground b. The vertical frame reinforcing material 5a connected to the stable ground b suspends the slope 1 formed on the slope when the slope collapses, so that the slope 1 immediately causes a landslide and collapses. Fulfills the function of preventing

In this case, the flexible vertical frame reinforcing material 5a arranged in each vertical groove 2 can extend from the upper end of the vertical frame 1 to the stable ground b on the upper side. A longer one is used, and it is attached so as to have a length that can reach the stable ground b on the upper side from the upper end of the cured frame 1.

For example, bar-shaped anchors 6 corresponding to the number of the vertical grooves 2 are fixed to the stable ground b on the upper side of the legal frame 1. Each anchor 6 is fixed to a stable ground c above a position corresponding to each vertical frame reinforcing member 5a. One end of each of the flexible vertical frame reinforcing members 5a protruding from the upper end of the legal frame 1 and extending upward is connected to the anchors 6 of the stable ground b and stretched. .

A guide groove 6a is formed in a section from the upper side of the legal frame 1 where the flexible vertical reinforcement members 5a are stretched to the stable ground b on the upper side. Each guide groove 6
A flexible vertical reinforcing member 5a is laid in the area a to extend and connect to the stable ground b. For example, each guide groove 6a is formed in a section from the projecting position of each vertical reinforcing member 5a at the upper end of the legal frame 1 to the mounting position of each anchor 6 of the stable ground b on the upper side.

Each anchor 6 is fixed to a hole dug in the stable ground b by concrete, and the upper end side of the anchor 6 protrudes from the surface of the concrete. The upper end of each vertical frame reinforcing material 5a is connected.

The lawn frame 1 formed on the slope such as the ground is formed by flexible vertical reinforcing members 5a extending from the upper end of the lawn frame 1 to the stable ground b on the upper side. It will be connected to each anchor 6 of the stable ground b. If the slope of the ground or the like causes, for example, surface slippage, landslide, weathering, or the like, the slope 1 is hung on each anchor 6 of the stable ground b by the reinforcing material 5a for each vertical slope. Thus, the frame 1 is prevented from immediately causing a landslide and collapsing.

If necessary, both ends of the flexible transverse frame reinforcing material 5b arranged in each transverse groove 3 are extended to the respective stable ground c on the left and right sides on both outer sides of the legal frame 1. It may be extended and connected to each of the left and right stable grounds c. Reinforcing material 5b for horizontal frame, whose both ends are connected to each stable ground c on the left and right sides,
By suspending the slope 1 formed on the slope from the left and right sides when the slope is collapsed, it functions to prevent the slope 1 from immediately causing a landslide in the left and right direction and collapsing.

In this case, the flexible lateral reinforcement member 5b arranged in each lateral groove 3 is connected to the left and right stable ground c on both outer sides from the left and right side ends of the legal frame 1. It is used so that it can be extended so that it can extend from the left and right side edges of the cured frame 1 to the left and right stable ground c on both outer sides. Can be

For example, rod-shaped anchors 7 corresponding to the number of the lateral grooves 3 are fixed to the left and right stable grounds c on both outer sides of the legal frame 1, respectively. Each anchor 7 is fixed to each stable ground c at a position corresponding to each horizontal frame reinforcing member 5b.
Then, both ends of each of the flexible horizontal frame reinforcing members 5b protruding from the left and right side ends of the legal frame 1 and extending outward on both the left and right sides,
It is connected to each anchor 7 of each left and right stable ground c and is stretched.

A guide groove 7a is provided in a section from both left and right sides of the legal frame 1 on which the flexible transverse frame reinforcing members 5b are stretched to each left and right stable ground c on both lateral sides. Is formed. In each guide groove 7a, there is laid a flexible lateral frame reinforcing member 5b which is extended and connected to the stable ground c. For example, each guide groove 7a is provided in a section from a projecting position of each horizontal frame reinforcing member 5b on both left and right ends of the legal frame 1 to a mounting position of each anchor 7 of each of the left and right stable grounds c. Is formed.

Each anchor 7 is fixed to a hole dug in the stable ground c by concrete, and the upper end side of the anchor 7 protrudes from the surface of the concrete. Both ends of each horizontal frame reinforcing member 5b are connected.

The lawn frame 1 formed on the slope such as the ground is composed of flexible horizontal lawn frames extending from the left and right ends of the lawn frame 1 to the left and right stable grounds c. The reinforcing members 5b are connected to the anchors 7 of the left and right stable ground c. When the slope of the ground or the like causes, for example, a surface slip, a landslide, or a slippage due to weathering, etc., the horizontal frame 1 is attached to each anchor 7 of each of the left and right stable grounds c by the horizontal frame reinforcing material 5b. Is suspended to prevent the legal frame 1 from immediately causing a landslide in the left-right direction and collapsing.

If necessary, anchors 8 are laid in the vertical groove 2 at predetermined intervals in the ground, and reinforcing rods are arranged in the vertical groove 2 and the horizontal groove 3 at the head of the anchor 8 that has been laid. A part of the vertical frame reinforcing material 5a and the horizontal frame reinforcing material 5b may be connected and used. The anchor 8 functions to support the slope 1 formed on the slope when the slope collapses, thereby preventing the slope 1 from immediately causing a landslide and collapsing.

The anchor 8 is driven deep into the bottom of the vertical groove 2 at the intersection of the vertical frame reinforcing member 5a and the horizontal frame reinforcing member 5b. It is driven into stable rocks deep inside and supported. Further, each anchor 8 is driven so that its head is exposed from the bottom surface of the vertical groove 2.

At the head of the anchor 8 exposed from the bottom surface of the vertical groove 2, a connecting member made of, for example, a ring is formed, and the reinforcing members 5a for the vertical frame and the reinforcing members 5 for the horizontal frame which are arranged vertically and horizontally.
“b” is inserted into a connecting member formed of a ring and connected to the head of the anchor 8.

Reinforcing material 5a for vertical frame arranged in each vertical groove 2
For example, the horizontal frame reinforcing material 5b arranged in each horizontal groove 3 is connected, for example, by inserting each intersection crossing in the vertical and horizontal directions into a connecting tool at the head of each anchor 8. By connecting the anchor 8 to the head, the reinforcing member 5a for the vertical frame arranged in each vertical groove 2
And the reinforcing members 5b for the horizontal frame arranged in the respective lateral grooves 3 are connected in a lattice shape, the adhesion between the mortar or concrete forming the legal frame 1 and the reinforcing material 5 is further increased, and the slope The slope 1 formed on the slope at the time of collapse of the slab is more firmly supported by these, and the slope 1 can be prevented from immediately causing a landslide and collapsing.

As described above, the vertical groove 2 and the horizontal groove 3 are excavated to form a protective frame 4 on the inner surface of each groove, and the vertical frame reinforcing material 5 a and the horizontal method frame are formed inside the vertical grooves 2 and the horizontal grooves 3. After the reinforcing members 5b are respectively arranged, mortar or concrete is sprayed and filled into the vertical grooves 2 and the horizontal grooves 3. And
The surface of the method frame 1 formed by spraying and filling is made to have the same or slightly higher height as the surface a of the slope such as the ground. For example, the height is set to protrude to about 0 to 10 cm. The surface of the legal frame 1 is finished with a trowel or the like.

At this time, when the surface of the legal frame 1 is the same height as the surface a of the slope such as the ground, when the vegetation grows inside and outside the legal frame 1, the legal frame 1 is hidden by the vegetation. It becomes a natural slope and does not impair the landscape.

When the surface of the lawn frame 1 has a height slightly protruding from the surface a of the slope such as the ground, when the greening base agent is sprayed into the inside of the lawn frame 1, the protrusion may slightly protrude. The frame 1 can prevent the sprayed greening base agent from flowing down due to rain or the like. In addition, when the protrusion from the slope surface a is high as in the conventional law frame, the dew and the sun rays may be partially blocked by the protruding law frame and may not sufficiently hit the plants inside the law frame. According to the present invention, however, such a disadvantage can be solved because the surface of the slope 1 is slightly higher than the surface a of the slope such as the ground. In this way, greening inside the legal frame 1 is facilitated.

[Embodiment 2] Here, FIG. 11 is a front view of a slope when a vertical groove is formed by excavating the surface of the slope, and FIG. It is a front view of the slope when the surface of the surface is excavated to form a lateral groove.

The method of the second embodiment differs from the method of the first embodiment in that the procedure of the step of forming the legal frame 1 is partially reversed, and the other steps are the same. This is the same as the first embodiment. The construction method according to the second embodiment is particularly used for construction in a place where the slope is easily collapsed, such as the ground.

That is, in the construction method according to the second embodiment, first, a plurality of vertical grooves 2 are excavated at predetermined intervals in the horizontal direction on the surface a of the slope such as the ground, and the excavated vertical grooves are formed. The protective frame 4 is formed on the inner surface of the second frame. In this case, the contents of the structure regarding the cross section and the depth of the vertical groove 2 and the contents of the protection frame 4 are exactly the same as those of the first embodiment.

After the formation of the protective frame 4, the vertical frame reinforcing material 5 a is arranged in the vertical groove 2 in the vertical direction, and the horizontal frame reinforcing material 5 b to be arranged in the horizontal groove 3 is previously set in the vertical groove. 2 is connected to the vertical frame reinforcing material 5a arranged inside. The horizontal frame reinforcement 5b connected to the vertical frame reinforcement 5a is provided on both left and right sides of the vertical groove 2. In this case, the contents such as the material and properties of the vertical frame reinforcing material 5a and the horizontal frame reinforcing material 5b to be used are exactly the same as those of the first embodiment.

Thereafter, mortar or concrete is sprayed into the inside of the vertical groove 2 for filling, and the surface of the vertical frame 1a formed by spraying and filling the same is slightly or slightly protruded from the surface a of the slope such as the ground. Height. in this case,
The height of the surface of the vertical frame 1a is determined according to the above-described embodiment.
Exactly the same as 1.

After the vertical frames 1a are formed in this manner, a plurality of horizontal grooves 3 are excavated at predetermined intervals in the vertical direction between the vertical frames 1a so as to be shallower than the vertical grooves 2. A protective frame 4 is formed on the inner surface of the device 3. In this case, the content of the structure regarding the cross section and the depth of the lateral groove 3 and the content of the protection frame 4 are as follows.
This is exactly the same as the first embodiment.

After the formation of the protective frame 4, the reinforcing member 5b for the transverse frame is arranged in the transverse groove 3 in the transverse direction, and then mortar or concrete is sprayed and filled into the transverse groove 3, and the spray filling is performed. The height of the surface of the horizontal frame 1b thus formed is equal to or slightly higher than the surface a of the slope such as the ground. In this case, the height of the surface of the horizontal frame 1b is exactly the same as in the first embodiment.

The present invention is not limited to the above embodiment of the present invention, and it is needless to say that various modifications can be made without departing from the spirit of the present invention. For example, in the embodiment of the present invention, the case where the legal frame 1 is hung by the vertical frame reinforcing material 5a has been described as necessary, but may be omitted. Further, the case where the legal frame 1 is hung by the left and right lateral legal frame reinforcing members 5b has been described as necessary, but may be omitted. In addition, if necessary, the case where the anchor 8 is driven into the vertical groove 2 to support the legal frame 1 with the anchor 8 has been described, but may be omitted.

[0053]

As is apparent from the above description, according to the slope digging method of the slope according to the first and second aspects of the present invention, the slope digs into the ground inside the slope. It can be supported and can enhance the integration with the slope, so that when the surface side of the slope causes, for example, surface slip, landslide, slip due to weathering, etc., it was digged into the ground inside the slope and supported. The slope can hold the slope and prevent the slope from easily collapsing due to a landslide or the like. In addition, since the protective frame that performs the function of the mold is buried, there is no need to remove the protective frame after the legal frame is formed, and the work can be made more efficient. Furthermore, if the surface of the lawn is the same height as the surface of the slope such as the ground, when the vegetation grows inside and outside the lawn, the lawn will be hidden by the vegetation and become a natural slope, There is no loss. Also, if the surface of the lawn is slightly higher than the surface of the slope such as the ground, when the greening base is sprayed inside the lawn, the greening base sprayed by the slightly protruding lawn The agent can be prevented from flowing down due to rain or the like. Also, if the protrusion from the surface of the slope is high as in the case of the conventional law frame, the dew and sun rays may be partially blocked by the protruding law frame and may not sufficiently hit the plants inside the law frame. According to the present invention, since the surface of the slope is slightly higher than the surface of the slope such as the ground, such a disadvantage can be solved. In this way, greening inside the legal frame can be facilitated.

Further, when the protective frame is formed by spraying mortar or concrete on the inner surface of the excavated groove and hardening the same, the collapse of the inner wall surface of the groove can be prevented, and It functions to prevent the mortar or concrete filled afterwards from flowing out, and it is also familiar with the mortar or concrete that is subsequently spray-filled, and integrates the mortar or concrete to be filled with the slope underground. Can be enhanced.

Further, when the protective frame is formed by attaching a burying sheet to the excavated inner surface of the groove, the sheet can prevent the inner wall surface of the groove from collapsing. In the short term, the sheet functions to prevent the filled mortar or concrete from flowing out,
In the long run, it does not hinder the integration of the mortar or concrete, which has rotted and hardened, with the ground.

According to a fifth aspect of the present invention, a reinforcing member for a vertical vertical frame is arranged in the vertical groove, and one end of the reinforcing material for the vertical vertical frame is connected to the upper side of the vertical frame. When the slope is extended to the stable ground and connected to the stable ground, the reinforcement for the vertical slope connected to the stable ground suspends the slope formed on the slope when the slope collapses. By doing so, it is possible to prevent the legal framework from immediately causing a landslide and collapsing.

According to the sixth aspect of the present invention, the reinforcing member for the flexible transverse frame is arranged in the lateral groove, and both ends of the flexible reinforcing member for the transverse frame are placed on both outer sides of the legal frame. If the stable ground is extended to the stable ground and connected to the stable ground, the reinforcing material for the horizontal slope that both ends are connected to each stable ground on the left and right sides is formed on the slope when the slope collapses. By suspending the legal frame from the left and right sides, it is possible to prevent the legal frame from immediately causing a landslide in the left and right direction and collapsing.

According to a seventh aspect of the present invention, a guide groove is formed in a section from the upper part of the legal frame to the stable ground on the upper side, and the stable ground can be extended and connected in each guide groove. In the case where the reinforcing material for the vertical frame is laid, when the left side (or the right side) of the ground on which the vertical frame is formed causes a landslide or the like, the law frame is shifted to the left side (or the right side). However, since the flexible vertical reinforcing members for suspending the vertical frame are respectively laid in the guide grooves, each vertical vertical frame reinforcing member is attached to the guide groove. Left (or right) of
It is prevented from moving to the left (or right) by hitting the inner wall surface of the vehicle, thereby preventing the legal frame suspended by the vertical frame reinforcing material from moving to the left (or right) due to landslides or the like. Can be prevented and the legal framework is on the left (or right)
In this way, it is possible to prevent the occurrence of damage caused by moving in a deviated manner.

Further, guide grooves are respectively formed in sections from both sides of the legal frame to the stable ground on both outer sides, and the stable grounds are extended and connected in the respective guide grooves. When laying flexible lateral stiffeners, the horizontal stiffeners are applied to the inner wall below the guide grooves and the slopes formed on the slopes when the slopes collapse. Hanging can prevent the framing from immediately causing a landslide and collapsing.

According to a ninth aspect of the present invention, when anchors are laid in the vertical groove at predetermined intervals in the ground and a part of the reinforcing material is connected to the head of the laid anchor, When the anchor supports the slope formed on the slope when the slope collapses, the slope can be prevented from immediately causing a landslide and collapsing.

In the case where the flutes are gradually excavated from the upper side to the lower side, the vertical method is formed by spraying and filling mortar or concrete into the flutes. The center of gravity of the frame is lowered, and the stability of the legal frame can be increased.

In the case where the flutes are excavated gradually from the upper side to the lower side and the lower part is further excavated further, the mortar or concrete is filled in the flutes. The center of gravity of the vertical frame formed by spray filling is lowered, and the stability of the vertical frame can be enhanced.

In the case where the vertical grooves are gradually excavated from the upper side and the lower side toward the intermediate side as in claim 12, the vertical grooves are prevented from moving downward. The resistance of the bottom of the middle part, which has become the deepest, from the earth and sand on the lower side is increased, and the siding is less likely to slip downward, thereby preventing the siding from immediately causing landslide and collapsing.

In the case where the reinforcing member is made of a flexible wire rope, a PC steel wire bundle, a messenger wire rope or an aramid fiber rope,
Even if the vertical groove and the horizontal groove follow the uneven surface of the ground and the groove is formed in a curved shape in the vertical direction, the reinforcement can be easily arranged by following the groove.

Further, when a plurality of steel fibers for increasing the strength of the mortar or concrete are buried in the mortar or concrete on which the flexible reinforcing material is arranged, the plurality of buried mortar or concrete may be buried. The strength of mortar or concrete,
Particularly, the bending rigidity and the torsional rigidity can be increased.

When the reinforcing material is made of a rigid reinforcing bar, the strength of the mortar or concrete, particularly the bending rigidity and the torsional rigidity, can be increased, so that the use of steel fiber is unnecessary. can do.

[Brief description of the drawings]

FIG. 1 is a front view of a slope in which a vertical groove and a horizontal groove are formed by excavating a surface of the slope, showing Embodiment 1 of the present invention.

FIG. 2 is a partial perspective view of a slope in which a vertical groove and a horizontal groove are formed by excavating a surface of the slope, showing Embodiment 1 of the present invention.

FIG. 3 is a cross-sectional view illustrating a first embodiment of the present invention, in which a surface of a slope is excavated to form a vertical groove.

FIG. 4 is a cross-sectional view illustrating a first embodiment of the present invention, in which a surface of a slope is excavated to form a vertical groove.

FIG. 5 is a cross-sectional view showing a first embodiment of the present invention, in which a surface of a slope is excavated to form a vertical groove.

FIG. 6A is a cross-sectional view of the groove according to Embodiment 1 of the present invention, in which mortar or concrete is sprayed on the inner surface of the groove to form a protective frame. (B) is a groove cross-sectional view showing Embodiment 1 of the present invention, in which a sheet is attached to the inner surface of the groove to form a protective frame.

FIG. 7A is a cross-sectional view of the groove according to the first embodiment of the present invention, in which reinforcing members arranged on the inner surface of the groove are supported by spacers. (B) is a plan view of a legal frame formed from mortar or concrete in which steel fibers are embedded, showing Embodiment 1 of the present invention.

FIG. 8 is a partially omitted schematic overall front view in which a slope is formed on a slope showing Embodiment 1 of the present invention.

FIG. 9 is a partially omitted schematic overall side sectional view in which a slope is formed on a slope showing the first embodiment of the present invention.

FIG. 10A is a cross-sectional view illustrating the first embodiment of the present invention when the surface of the normal frame is at the same height as the surface of the normal surface. (B) is a cross-sectional view showing Embodiment 1 of the present invention, in which the surface of the slope is slightly higher than the surface of the slope.

FIG. 11 is a front view of the slope when excavating the surface of the slope to form a vertical groove according to the second embodiment of the present invention.

FIG. 12 is a front view of a slope when excavating a surface of the slope to form a horizontal groove after a vertical slope is formed according to the second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Law frame 1a Vertical frame 1b Horizontal frame 2 Vertical groove 3 Horizontal groove 4 Protective frame 4a Fixing pin 5 Reinforcement 5a Vertical frame reinforcement 5b Horizontal frame reinforcement 5c Spacer 5d Steel fiber 6 Anchor 6a Guide groove 7 Anchor 7a Guide groove 8 Anchor a Slope surface b Stable ground c Stable ground

Claims (15)

[Claims] 1. A plurality of vertical and horizontal grooves are excavated at predetermined intervals in the vertical and horizontal directions on the surface of a slope such as a ground, and a deep groove is excavated to form a protective frame on the inner surface of the excavated groove. And
After the formation of the protective frame, reinforcing materials are arranged lengthwise and crosswise inside the groove, and then mortar or concrete is sprayed and filled into the groove. A method of excavating a slope by a spraying method, wherein the height is set to be equal to or slightly higher than the surface of the surface. 2. Excavating a plurality of flutes at predetermined intervals in the horizontal direction on the surface of a slope such as ground, forming a protective frame on the inner surface of the excavated flute, and forming a vertical frame after forming the protective frame. The reinforcement for the vertical frame is vertically arranged inside the groove, and the reinforcement for the horizontal frame arranged in the horizontal groove is connected to the reinforcement for the vertical frame arranged inside the vertical groove in advance, After that, the mortar or concrete is sprayed and filled into the vertical grooves, and the surface of the vertical frame formed by spraying and filling is made the same or slightly protruding height as the surface of the slope such as the ground. Excavating a plurality of horizontal grooves shallower than the vertical grooves at predetermined intervals in the vertical direction between the vertical frames, forming a protective frame on the inner surface of the excavated horizontal grooves, and forming the protective frame inside the horizontal grooves after forming the protective frames. Reinforce the horizontal frame reinforcement in the horizontal direction, and then spray mortar or concrete inside the horizontal groove to fill it. Characterized in that the surface of the horizontal slope formed by spraying and filling is made to have the same height as or slightly protruding from the surface of the slope such as the ground, etc. Construction method. 3. The method according to claim 1, wherein the protection frame is formed by spraying mortar or concrete onto the inner surface of the excavated groove and hardening the mortar or concrete. 4. The method of excavating a slope according to claim 1, wherein the protection frame is formed by attaching a burying sheet to an inner surface of the excavated groove. 5. A reinforcing member for a flexible vertical frame is arranged in the vertical groove, and one end of the reinforcing material for the vertical vertical frame is extended to a stable ground above the legal frame. 3. The method of excavating a slope according to claim 1 or 2, wherein the slope is connected to a stable ground. 6. A reinforcing member for a flexible transverse frame is arranged in a lateral groove, and both ends of the flexible reinforcing member for a transverse frame are extended to stable grounds on both outer sides of the legal frame. 3. The method of excavating a slope according to claim 1 or 2, wherein the slope is connected to a stable ground. 7. A flexible vertical method frame for forming a guide groove in a section from the upper part of the frame to the stable ground on the upper side, and extending and connecting to the stable ground in each guide groove. 6. The method of excavating a slope according to claim 5, wherein a reinforcing material is laid. 8. A flexible lateral method in which guide grooves are respectively formed in sections from both sides of the legal frame to the stable ground on both outer sides, and are extended and connected to the stable ground in each guide groove. 7. The method for excavating a slope according to claim 6, wherein a reinforcing material for the frame is laid. 9. The slope according to claim 1, wherein an anchor is cast in the vertical groove at a predetermined interval in the ground, and a part of the reinforcing material is connected to a head of the installed anchor. Spray method excavation method. 10. The method of excavating a slope according to claim 1, wherein the vertical groove is gradually excavated from an upper side to a lower side. 11. The method of excavating a slope according to claim 1, wherein the flute is gradually excavated from the upper side to the lower side, and the lower part is excavated further deeper. . 12. The method of excavating a slope according to claim 1, wherein the flute is gradually excavated from the upper side and the lower side toward the intermediate side. 13. The reinforcing material is a flexible wire rope,
The method of excavating a slope according to any one of claims 1, 2, 5, and 6 comprising a PC steel wire bundle, a messenger wire rope, or an aramid fiber rope. 14. The mortar or concrete on which the flexible reinforcing material is arranged, wherein a plurality of steel fibers for enhancing the strength of the mortar or concrete are embedded. The method of excavating a slope by a spray method according to any one of the above. 15. The method of excavating a slope according to claim 1, wherein the reinforcing member comprises a rigid reinforcing bar.