JPH0960037A - Contunuous wall excavating and forming device and continuous greening wall forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To excavate the ground and also form a continuous wall comprising a plurality of different properties of layers by providing a main excavation edge, an auxiliary-excavation edge, a cover plate and chemicals feeding port which feeds chemicals to each excavation area. SOLUTION: A guide post 4 is inserted into the part which was excavated to an excavation angle of a continuous greening wall and from which the excavated soil was discharged, and when a motor is driven while feeding chemicals for ordinary concrete from a chemicals feeding port 7 and chemicals for greening concrete from a chemicals feeding port 9, the endless chain 17 of a main excavation edge 10 turns, excavating the ground with excavation bits 18, 18..., and the soil and sand excavated are mixed with the chemicals for from the feeding port 7. In the next step, the endless chain 26 of auxiliary-excavation edge 11 is turned in the direction opposite to the main excavation edge 10, excavating an area S2 proximate to the area S1 excavated by a excavation bits 28, 28..., and mixing blades 27, 27... and the edge 10, and the excavated soil and sand is mixed with the chemicals for greening walls, which is fed from the chemicals feeding port 9, forming a continuous greening wall.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous wall excavation forming apparatus and a continuous greening wall forming method for forming a continuous wall in the ground.

[0002]

2. Description of the Related Art Conventionally, as means for constructing a continuous wall in the ground, a chain-shaped excavating blade is wound endlessly along the outer periphery of a guide post vertically installed on a freely movable base machine. Known continuous wall excavators are known.

In order to form a continuous wall in the ground using the above excavator, first, a vertical hole is drilled by a separate means (for example, a vertical hole excavator) in advance, and the guide post is inserted into the vertical hole to set. After that, the base machine is moved while rotating the excavating blade to excavate a continuous groove in the traveling direction, the chemical solution is injected, and the mixture is mixed with earth and sand to form a continuous wall.

On the other hand, recently, it is required to form the continuous wall into a multi-layer structure in which layers having different properties are arranged in parallel. For example, in the case of a revetment wall of a river, the strength as a revetment wall should be a soil cement structure, and the side facing the river should be a green concrete structure.

[0005]

However, in the conventional continuous wall excavator described above, only one layer of continuous wall having the same property can be formed, and the multi-layer structure in which layers having different properties as described above are juxtaposed. Could not cope with the construction of the continuous wall of.

In view of this, the present invention has an object to provide a continuous wall excavation forming apparatus and a continuous greening wall forming method capable of forming a continuous wall composed of a plurality of layers having different properties simultaneously with excavation of the ground.

[0007]

As a means for solving the problems of the above-mentioned conventional techniques, the present invention provides a guide post mounted on a freely movable base machine, and an endless rotation along the outer peripheral surface of the guide post. A chain-shaped main excavating blade that is movably wound and excavates a part of the continuous wall in the thickness direction, and is endlessly rotatable along at least one side of the rotation surface of the main excavating blade along the guide post. A chain-shaped sub-digging blade for winding a part of the continuous wall in the thickness direction, and the main,
A shield plate for shielding the boundary to be excavated by the sub-drilling blade, and a chemical liquid spout for pouring a chemical liquid separately into each excavation area opened at the bottom of the guide post and partitioned by the shield plate, There are a continuous wall excavation forming device characterized by forming a plurality of layers of improved portions having different properties in the ground, and a method of forming a continuous greening wall using this device.

Therefore, while excavating the ground by rotating the main excavation blade and the sub-excavation blade, the base machine is moved in the continuous wall forming direction and separately supplied to each region excavated by the main and sub-excavation blades from the chemical solution pouring port. The chemical solution and the excavated earth and sand in each area are agitated and mixed. At this time, since the areas are isolated by the shielding plate, the mixed earth and sand in both areas do not mix with each other. As a result, a continuous wall composed of a plurality of layers having different properties is formed in the region excavated by the main excavating blade and the sub excavating blade.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings.

FIG. 1 is a continuous wall excavation forming apparatus 1 according to the present invention.
2 shows a schematic side view of the entire embodiment, and FIG. 2 shows the plane of the excavating blade portion as seen from the direction of arrow A in FIG. 1. This embodiment is, for example, a specification for constructing a continuous greening wall for revetment of rivers. Is shown.

The base machine 2 is of a crawler type, and a front portion of the base machine 2 is supported by a support member 3 near the upper end of a guide post 4. Although not shown in the above figures, the support member 3 is used as the base machine 2 as a specification corresponding to the configuration of the target continuous wall.
On the other hand, there are cases in which the support angle and the support height such that the elevation angle and the vertical position can be changed are adjustable.

As shown in FIG. 5, the cross-sectional shape of the guide post 4 is formed of a steel plate into a box-shaped box having a rectangular cross section. 6 is provided, the lower end of one of the supply paths 5 is communicated with a chemical solution outlet 7 that opens to the outer surface of the end surface 4a of the guide post 4 below, and the lower end of the other chemical solution supply path 6 is of the guide post 4. It penetrates through the side surface 4b and communicates with a spout 9 on the outer surface side of the shielding plate 8 described later. Then, chemical liquids having different properties are supplied to these chemical liquid supply paths 5 and 6.

The main excavating blade 10 and the sub excavating blade 11 arranged along the guide post 4 and the drive mechanism thereof are as shown in FIGS. 3 and 4. That is, a motor 12 is fixedly mounted on the upper end of the guide post 4, a sprocket 14 is fixed to a rotary flange 13 rotated by the motor 12, and a guide wheel 15 is axially mounted on the lower end of the guide post 4. There is.

The chain-shaped main excavating blade 10 is wound around the sprocket 14 and the guide wheel 15 so as to be endlessly rotatable. In the main excavating blade 10, the excavating bits 18, 18 ... Are provided on the outer surface of the chain 17 projecting on the side surface with a pitch at which the pins 16, 16 ... Engage with every other teeth 14a, 14a of the sprocket 14. As shown in FIG. 5, a plurality of (four in the figure) the drill bits 18 are fixed to the chain 17 on the outer surface of the base 19 which is fixed to the chain 17 and has a width L. ... has a structure in which the blade portions 20, 20 ... Are provided in a protruding manner, and the blade portions 20, 20, ...
As a whole, as shown in FIG. 5, it covers all in the horizontal direction.

Immediately below the sprocket 14, driven wheels 22 having pins 21, 21 ... Engaging with the teeth 14a, 14a of the sprocket 14 annularly arranged on the side surface thereof are axially mounted on the guide post 4. A sprocket 24 is fixed to one end of a shaft 23 of the driven wheel 22. A sprocket 25 corresponding to the sprocket 24 is attached by a shaft 23 'directly above the guide wheel 15 below the guide post 4.

A chain-shaped auxiliary excavating blade 11 is wound between the sprockets 24 and 25 so as to be endlessly rotatable.
The auxiliary excavating blade 11 is engaged with the sprockets 24, 25 and wound around a chain 26, and the excavating and stirring blades 27 are fixed to the chain 26 at a predetermined pitch and arranged in different inclination directions. 27 ... and this stirring blade 2
7, 27 ... And the excavating bit 28 provided at the outer end position, so that the auxiliary excavating blade 11 is rotated in the opposite direction to the main excavating blade 10. The excavating bit 28 is smaller than the excavating bit 18 of the main excavating blade 10 but has the same structure. As a result, even if the excavation bit 28 of the sub-excavation blade 11 is small, good excavation stirring is performed in cooperation with the excavation stirring blade 27.

Between the main digging blade 10 and the sub digging blade 11, the above-mentioned shielding plate 8 having a width capable of covering the side surface of the main digging blade 10 is provided on the side surface 4b of the guide post 4 on the supporting portion 8a ,.
8a ..., The upper end of the shield plate 8 is located at an intermediate position in the longitudinal direction of the guide post 4, and the lower end of the shield plate 8 is slightly above the lower end of the auxiliary excavating blade 11. The excavated area S ₁ and the area S ₂ excavated by the sub-excavation blade 11 are isolated from each other.

Next, a case of constructing a continuous greening wall for revetment of a river by the continuous wall excavation construction apparatus according to the above embodiment will be described with reference to FIG.

Prior to the construction of the continuous greening wall, FIG. 6 (A)
As shown in FIG. 7, excavating and discharging earth and sand at the position where the continuous green wall is formed by using a power shovel 29, and then bringing the base machine 2 of the continuous wall excavation forming device 1 close to the above-mentioned excavation position and forming the guide post 4 to form the continuous green wall. It is inserted into the excavated and excavated portion according to the angle (FIG. 6 (B)).

After this, two types of chemical liquids, one for normal concrete having a high strength and one for green concrete, are supplied through the chemical liquid supply paths 5 and 6, and the chemical liquid for normal concrete is supplied from the chemical liquid spout 7 and the green is sprayed from the chemical liquid spout 9. When the motor 12 is driven while pouring the chemical liquid for concrete, the sprocket 13 rotates and the chain 17 of the main excavating blade 10 rotates endlessly, and the excavating bit 18, which is fixed to the chain 17,
18 ... excavates the ground (FIG. 6 (C)), and the excavated earth and sand is kneaded with the chemical liquid poured from the chemical liquid pouring port 7.

On the other hand, the chain 26 of the auxiliary excavating blade 11 is endlessly rotated in the opposite direction to the main excavating blade 10 via the driven wheel 22 which is interlocked with the sprocket 13 of the motor 12, and is agitated with the excavating bits 28, 28 ... A region S ₂ adjacent to the region S ₁ excavated by the main excavation blade 10 is excavated by the blades 27, 27, and the excavated earth and sand is kneaded with the chemical liquid for greening concrete poured from the chemical liquid pouring port 9.

The earth and sand kneaded by the main and sub-digging blades 10 and 11 are isolated by the shielding plate 8, so that they do not mix with each other.

While the above operation is being performed, the base machine 2 is moved in the continuous green wall forming direction to cut through the ground to successively build continuous green walls.

In this way, the chemical liquid for concrete which exhibits a predetermined strength from the chemical liquid spout 7 of the main excavating blade 10 as usual and the greened concrete which can grow plants from the chemical liquid spout 9 of the secondary excavating blade 11 are used. If a chemical solution for the purpose is poured out, a greening concrete layer a is formed integrally with the original seawall b on the river side as shown in the partial cross section in FIG. 7, and the continuous seawall is greened. It can be a possible structure.

Further, as a specification for constructing a continuous wall such as a retaining wall, a sub-excavating blade 11 is provided on both sides of the main excavating blade 10 to form a continuous wall having a three-layer structure as shown in a partial cross section in FIG. It is possible to form a continuous wall having a multi-layer structure, for example, by forming the concrete layers C and C having low strength on both sides and the concrete layer d having the required strength on the central layer.

[0026]

As described above, according to the present invention, it is possible to simultaneously improve the ground of a plurality of layers having different properties and to form a continuous wall having a plurality of layers having different properties. Can be created.

Further, the continuous wall excavation forming apparatus according to the present invention is
The adjacent areas of the chain-shaped main and secondary digging blades are separately excavated, and each chemical solution and excavated earth and sand are kneaded within the range of the excavated area to form a continuous wall of multiple layers, so it is excavated. Soil and sand can be immediately mixed with the chemical liquid, the stirring and mixing efficiency is high, and since the shielding plate is provided between the main and sub-drilling blades, the kneading sands with different properties do not mix with each other, It is possible to create a multi-layered continuous wall that fully exhibits each property.

In particular, according to the method of the present invention, the working process is shortened by simultaneously forming a normal concrete layer and a greening concrete layer, and a continuous greening wall capable of growing plants can be formed in a short construction period. it can.

[Brief description of drawings]

FIG. 1 is a schematic side view showing an embodiment of a continuous wall excavation creation device according to the present invention.

FIG. 2 is a plan view of the excavating blade portion viewed from the direction of arrow A in FIG.

FIG. 3 is an enlarged plan view of the same with a part cut away.

FIG. 4 is a vertical side view of the same.

5 is a bottom view of FIG.

6A to 6C are process explanatory diagrams.

FIG. 7 is a partial cross-sectional view of a two-layer continuous wall.

FIG. 8 is a partial cross-sectional view of a three-layer continuous wall.

[Explanation of symbols]

 1 Continuous wall excavation creation device 2 Base machine 4 Guide post 5,6 Chemical liquid supply path 7,9, Chemical liquid spout 8 Shield plate 10 Main excavation blade 11 Sub-excavation blade 12 Motor 14 Sprocket 15 Guide wheel 17 Chain 18 Excavation bit 20 Blade Part 22 Driven wheel 24, 25 Sprocket 26 Chain 27 Excavation stirring blade 28 Excavation bit

Front Page Continuation (72) Inventor Higuchi Akira 3-24-15 Hanaguri, Soka City, Saitama Prefecture, Northern Headquarters National Highway Construction Office, Ministry of Construction (72) Inventor Hamano Mamoru, 1293, Amado-cho, Hanamigawa-ku, Chiba, Chiba Prefecture Machinery Co., Ltd. Chiba Plant (72) Inventor Etsuo Hirakawa 1293 Amado-cho, Hanamigawa-ku, Chiba City, Chiba Sanwa Machinery Co., Ltd. Chiba Plant

Claims (2)

[Claims] 1. A guide post mounted on a freely-movable base machine, and a chain-like main body that is endlessly rotatable around an outer peripheral surface of the guide post and excavates a part of a continuous wall in the thickness direction. A digging blade and a chain-like sub-digging arranged on at least one side of the rotation surface of the main digging blade and endlessly rotatably wound along the guide post to dig a part of the continuous wall in the thickness direction. A blade, a shield plate for shielding a boundary excavated by the main and sub-excavation blades, and a chemical solution pouring solution for separately pouring a chemical solution into each excavation area opened at a lower portion of the guide post and partitioned by the shield plate. A continuous wall excavating and forming apparatus having an outlet and forming an improved portion of a plurality of layers having different properties on the ground. 2. A guide post mounted on a freely-movable base machine, and a chain-shaped main body that is endlessly rotatably wound around the outer peripheral surface of the guide post and excavates a part in the thickness direction of a continuous wall. A digging blade and a chain-shaped sub-digging arranged on at least one side of the rotation surface of the main digging blade and endlessly rotatably wound along the guide post to dig a part of the continuous wall in the thickness direction. A blade, a shield plate for shielding a boundary excavated by the main and auxiliary excavating blades, and a chemical solution pouring solution for separately pouring a chemical solution into each excavation area opened at a lower portion of the guide post and partitioned by the shield plate. Using a continuous wall excavation creation device having an outlet, a high-strength concrete wall is formed in the area to be excavated by the main excavating blade, and a green concrete wall is simultaneously formed in the area to be excavated by the auxiliary excavating blade. How to create a continuous greening wall .