JP2520572B2 - Soil consolidation device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soil consolidated body for forming a soil retaining wall, a water blocking wall, a foundation pile on the ground, or for forming a soil consolidated body on the ground for improving the ground. The present invention relates to a forming device.

[0002]

2. Description of the Related Art Conventionally, soil retaining walls, water blocking walls, foundation piles have been formed on the ground, or excavated soil and solidification materials have been mixed to form soil solidified bodies on the ground to improve the ground. Is known to do. And, as a device for forming a conventional soil solidified body, an excavation shaft is attached movably up and down along a leader of a crawler crane installed on the ground, and a bit is provided at the tip of the excavation shaft and A stirring means such as a stirring blade or a stirring blade is partially provided in the vertical direction, and a spouting portion for spouting a solidifying material such as cement milk is further provided on the bit or the excavating shaft. This device
The excavation axis is inserted into the ground to excavate the ground, and the solidifying material is ejected from the ejection part to stir and mix the excavated soil and the solidification material, and after inserting to the predetermined ground, the excavation axis is raised to the ground. The soil solidified body is formed as described above to form a mountain retaining wall, a water blocking wall, a foundation pile on the ground, or to improve the ground.

[0003]

However, in the above-mentioned conventional device, since the excavation shaft is vertically movable along the leader of the crawler crane installed on the ground, the vertical length is long on the ground. A leader is required and a long excavation axis moves up and down along the leader, resulting in poor stability and risk of tipping over.Especially before or after excavation or when moving the equipment, the entire excavation axis Is positioned vertically on the ground, and there is a risk of equipment overturn. Further, at a site where there are obstacles in or above the tunnel, the above-mentioned long leader and excavation shaft cannot be arranged, and there is a problem that they cannot be used in such a place.

Further, in the case of forming a soil solidified body on the ground, since the excavated earth and sand of the original ground is used and stirred and mixed with the solidifying material in the ground, solidification with the excavated earth and sand is inevitable. It is unavoidable that the mixture with wood will overflow to the ground by the amount of swelling of excavated soil and the solidification material added, but in addition to this, the mixture of the volume of the drilling shaft to be inserted will further overflow to the ground. Therefore, there is a problem that the amount of the mixture overflowing on the ground increases. In particular, when the depth of the excavation shaft is increased, the volume of the excavation shaft inserted into the ground is proportionally increased, and the amount of the mixture overflowing to the ground is further increased. However, the mixture of excavated soil and solidifying material that overflows above the ground is a kind of industrial waste because the solidifying material is mixed, unlike ordinary excavated soil. However, there is a problem that the work environment is deteriorated and the working environment is deteriorated.

The present invention has been made in view of the above-mentioned problems of the prior art, and its object is to avoid the risk of tipping over on the ground and to prevent obstacles in the upper direction such as in a tunnel. It is an object of the present invention to provide a device for forming a soil solidified body that can be constructed at a certain location and that can reduce the amount of a mixture of excavated soil and solidified material that overflows above the ground even when the depth is deep.

[0006]

In order to solve the problems of the above-mentioned conventional examples and to achieve the object of the present invention, a device for forming a soil consolidated body of the present invention is a wire, chain, chain or the like from the ground. In the device main body 3 that is suspended by the sheet-like material 1 and completely inserted into the ground 2 to descend or rise in the ground 2,
The excavating means 4 for excavating the ground 2, the driving means 5 for driving the excavating means 4, the consolidating material injecting part 6 for ejecting the consolidating material, and the excavated soil and the consolidating material are mixed with stirring. And a stirrer 7 for supplying the solidifying material from the ground to the solidifying material injection part 6 of the apparatus body 3, and the apparatus body 3 is provided with the excavated earth and sand and the solidifying material. Pass the mixture with
To form a passage that penetrates the upper and lower sides of the
Transfer means for forcibly moving the compound through the passage
It is characterized in that 15 is provided .

[0007]

[0008]

[0009]

According to the present invention having the above-mentioned structure, however, the excavation means is constructed by inserting the apparatus main body 3 suspended from the ground by the linear material 1 such as a wire, chain or chain into the ground 2. By excavating with 4, the earth moves down in the ground 2 due to the excavation and the weight of the device body 3, and at this time, the solid material is injected from the solid material injection part 6 and the excavated earth and sand excavated by the excavation means 4 The solidifying material is stirred by the stirring means 7. When the device body 3 reaches a predetermined depth, the linear member 1 that suspends the device body 3 is pulled to pull the device body 3 to the ground. In this way, the ground 2 is filled with the mixture of the excavated soil and the solidifying material, and the solidifying material is hardened to form a soil solidified body in the ground 2. Then, during the above process, the mixture of the excavated earth and the solidifying material overflowing on the ground is almost equal to the sum of the amount of the expansion of the excavated earth and sand, the injection of the solidifying material, and the volume of the apparatus body 3. Therefore, there is no fear that the volume of the inserted excavation shaft will increase proportionally when the insertion depth becomes deeper as in the conventional excavation shaft. In addition, the equipment body 3 is mixed with excavated soil and solidifying material.
Form a vertical passage to pass the compound, and
When transferring a mixture through
Therefore, the transfer can be reliably performed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the accompanying drawings. 1 to 4 show an example of an apparatus used in the present invention. The apparatus main body 3 has a substantially cubic or rectangular parallelepiped outer shape so as to have a square shape or a rectangular shape in a plan view, is framed by a frame, and an excavation means 4 is provided below the apparatus main body 3. This excavation means 4 has a rotary shaft 1
Rotating body with rotary blades for excavation 11 in which 0 is in the horizontal direction 11
The rotary body 11 with a rotary blade for excavation is provided with a plurality of claw portions 16 protruding from the outer peripheral portion thereof, and a blade 17 is provided at the outer end portion of the claw portion 16. In the embodiment shown in the accompanying drawings, a pair of left and right rotary bodies 11 with rotary blades for excavation are arranged in the lower part of the apparatus body 4. A pair of rotating bodies 11 with rotary blades for excavation
When the ground is excavated while rotating, a square or rectangular hole in plan view is formed. The square or rectangular hole in plan view is set so as to correspond to the shape of the apparatus body 3 in plan view. . The rotating body 11 with the rotary blade for excavation is a rotating device 18 that constitutes the driving means 5 provided in the device body 3.
It rotates by.

A stirring means 7 is provided on the top of the apparatus main body 3. The stirring means 7 is composed of a plurality of stirring rotators 13 having a rotating shaft 12 oriented laterally, and the stirring rotator 13 has a plurality of claw portions 16 'projectingly provided on the outer periphery of a drum-shaped portion. . A blade may or may not be provided on the outer end portion of the claw portion 16 'of the stirring rotator 13. In the embodiment shown in the accompanying drawings, a pair of left and right stirring rotors 13 are arranged on the upper part of the apparatus body 4. When the excavated earth and sand and the solidifying material are agitated and mixed while rotating the pair of agitating rotary members 13, the agitating and mixing is performed in an area corresponding to the shape of the apparatus body 3 in plan view. The stirring rotator 13 is rotated by a rotator 18 included in the drive unit 5 provided in the apparatus body 3.

At the time of inserting the apparatus main body 3 into the ground (that is, at the time of descending), as shown in FIG. 2, the excavated earth and sand are passed through between the adjacent rotating bodies 11 with rotary blades for excavation and between the rotary bodies 13 for stirring. The rotary body 11 with a rotary blade for excavation and the rotary body 13 for stirring rotate so that the mixture with the solidifying material moves upward, and conversely, when the device body 3 is pulled up from the ground (that is, when it rises). As shown in FIG. 4, the rotary body 11 with rotary blades for excavation is moved downward so as to move the mixture of the excavated earth and sand and the solidifying material between the rotary bodies 11 with rotary blades for excavation and between the rotary bodies 13 for stirring. Also, the stirring rotator 13 is controlled to rotate.

A vertical passage 14 is formed in the main body 3 for passing a mixture of excavated soil and a solidifying material. The passage 14 is provided with left and right rotary blades for excavation whose lower end openings face each other. The upper end opening portion is opened to the upper position between the rotating bodies 11 and to the opposing stirring rotating body 13. The apparatus main body 3 is suspended by a linear material 1 such as a wire, a chain, or a chain, and the apparatus main body 3 is provided with a solidifying material injection unit 6 for injecting a solidifying material. Reference numeral 9 in the drawing denotes a solidifying material supply hose for supplying the solidifying material to the solidifying material injection unit 6, which is connected to a solidifying material supply device (not shown) installed on the ground. The solidifying material supply hose 9 is attached along the linear material 1. The linear material 1 is suspended from the ground by a construction machine installed on the ground, and the linear material 1 is wound around a drum provided on the construction machine.

The formation of a soil solidified body in the ground using the above-mentioned apparatus is carried out as follows.
While excavating the earth by excavating the ground by rotating the rotating body with an excavating rotary blade 11 which constitutes the excavating means 4 in a state where the apparatus main body 3 is suspended by the linear material 1 from the construction machine installed on the ground, the excavation and the apparatus main body 3 The device body 3 is inserted into the ground by its own weight.
In this case, the above-mentioned excavation is performed while injecting a solidifying material such as cement milk, a mixture containing cement milk as a main material, a synthetic resin liquid, or a mixture of a synthetic resin liquid and another material from the solidifying material spraying part 6. At the same time, the stirring rotating body 13 constituting the stirring means 7 is rotated to stir and mix the excavated earth and sand and the solidifying material. In the embodiment shown in the accompanying drawings, the device main body 3
2, the mixture of excavated earth and sand and the solidifying material is moved upward through the space between the adjacent rotary bodies 11 with rotary blades for excavation as shown in FIG. By rotating the pair of stirring rotors 13 between the rotors 13 as shown in FIG. 2, the mixture of the excavated earth and sand and the solidifying material moves upward while being stirred and mixed through the rotors 13 for stirring. . In this way, the device body 3 is straightly inserted into the ground by excavation and its own weight. When the device body 3 descends to a predetermined depth, the linear body 1 is pulled up to raise the device body 3.
At the time of pulling up from the ground (that is, when ascending), the rotating directions of the stirring rotary body 13 and the rotary body 11 with rotary blade for excavation are reversed as shown in FIG. The mixture of earth and sand and the solidifying material is moved downward, and the passage 1
4 is moved downward and is moved downward between the pair of rotary bodies 11 with rotary blades for excavation by the pair of rotary bodies 11 with rotary blades for excavation. When the apparatus body 3 is pulled up, the solidifying material may or may not be ejected. By pulling up the apparatus main body 3 with the linear material 1 in this manner, a hole having a square or rectangular cross section and filled with a mixture of excavated earth and sand and a consolidation liquid is formed in the ground.

During the above process, the mixture of the excavated earth and solidifying material overflowing above the ground is almost the sum of the amount of the expansive earth and sand expelled, the amount of the solidified material injected, and the volume of the apparatus body 3. Therefore, there is no fear that the volume of the inserted excavation shaft will increase proportionally when the insertion depth becomes deeper as in the conventional insertion of the excavation shaft. By the way, the passage 14 provided in the apparatus body 3 may be provided with a transfer means 15 for forcibly moving the mixture of earth and sand and the solidifying material through the passage 14. When the transfer means 15 is provided, between the pair of rotary bodies 11 with rotary blades for excavation and between the pair of rotary bodies 13 for stirring.
Alternatively, the mixture of the excavated earth and sand and the solidifying material can be smoothly transferred from between the pair of stirring rotary bodies 13 to between the pair of excavating rotary blade-equipped rotary bodies 11. An example of the transfer means 15 is shown in FIG. 2, and the screw 25 is rotated by rotating the rotating device 26 in the forward direction or the reverse direction to transfer the mixture upward or downward in the passage 14. Further, FIGS. 5 and 6 show another embodiment of the transfer means 15, in which a pump 27 for transferring the mixture is provided in the passage 14, and the passage 14 is shown in FIGS. It is composed of an ascending passage 14a and a descending passage 14b, and a pump 27a for raising the mixture and a pump 27b for lowering the mixture in the respective passages 14a, 14b.
And are provided. Further, as another embodiment of the transfer means 15, as shown in FIG. 7, the passage 14 is constituted by a flexible hose such as rubber, and a plurality of arms 29 are radially provided on the rotating body 28 so as to project. The roller 30 is rotatably provided at the tip of the arm 29, and the rotating body 28 is rotated to rotate the roller 30 while sequentially pressing the roller 30 against the outer surface of the flexible hose, so that the mixture in the hose can be rotated. The transfer is made in the direction of the arrow indicated by the broken line. When the rotating body 28 is rotated in the opposite direction, the mixture in the hose is transferred in the opposite direction.

A sled-like posture control member 32, which is driven by a cylinder 31 and can freely change its vertical posture and inclination posture, is provided on each side surface of the apparatus main body 3, and the inclinometer provided in the apparatus main body 3 is provided. When the inclination of the apparatus main body 3 is detected by 33, the cylinder 31 is driven by this detection signal to press the upper portion or the lower portion of the attitude control member 32 against the hole wall (for example, imagine in FIGS. 2, 3, and 4). The posture control member 32 is tilted as indicated by the line) to control the posture of the figure apparatus body 3 to maintain vertical accuracy.

[0017]

As described above, according to the present invention, the wire is suspended from the ground by a wire material such as a wire, a chain, or a chain, and the whole is completely inserted into the ground to descend or rise in the ground. The excavating means for excavating the ground, the driving means for driving the excavating means, the consolidating material injection part for ejecting the consolidating material, and the excavating earth and sand and the consolidating material are stirred and mixed in the main body of the device. And a stirrer means for supplying a solidifying material supply hose for supplying the solidifying material from the solidifying material supply device on the ground to the solidifying material injection part of the apparatus main body, and a mixture of earth and sand and the solidifying material. The passage
Since a transfer means for forcibly moving through is provided , a construction machine that is shorter on the ground than a conventional one that mixes excavated sand and solidification material while inserting a rotating shaft into the ground is used. It can be installed, and there is no risk of falling compared to conventional construction machines installed on the ground that are tall and have a high center of gravity. It is possible to work even in a certain area, and the deeper the insertion depth as in the conventional example of inserting the rotary shaft into the ground, the larger the volume of the rotary shaft to be inserted into the ground. There is no increase in the amount of the mixture of excavated soil and solidifying material that overflows above the ground, and the volume of the device body that is inserted into the ground does not change even when the depth becomes deeper. Even if the volume of the supply hose increases, the conventional rotary shaft Bereba volume is small, this results,
Even if the depth becomes deeper, the amount of the mixture of the excavated soil and the solid material overflowing on the ground can be reduced, and the processing cost of the mixture overflowing on the ground can be reduced. Also,
Up and down for passing the mixture of excavated soil and solidification material into the main body
To form a passage that penetrates the
Providing a transfer means for forcibly moving through the road
Therefore, when transferring the mixture through the passage,
The transfer can be carried out systematically, and the transfer can be performed reliably.

[0018]

[0019]

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a front cross-sectional view showing a state where the above apparatus body is inserted into the ground.

FIG. 3 is a side sectional view showing a state in which the above apparatus body is inserted into the ground.

FIG. 4 is a front sectional view showing a state in which the above apparatus body is being pulled up.

FIG. 5 is a perspective view of another embodiment of the present invention.

FIG. 6 is an explanatory view showing the above-mentioned passage and transfer means.

FIG. 7 is a schematic explanatory view of another embodiment of the above passage and transfer means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wire material 2 Ground 3 Device main body 4 Excavation means 5 Driving means 6 Consolidation material injection part 7 Stirring means 9 Consolidation material supply hose 10 Rotating shaft 11 Rotating body with rotary blade for excavation 12 Rotating shaft 13 Rotating body for stirring 14 Passage 15 Transfer means

Claims (1)

(57) [Claims] 1. An excavation means for excavating the ground in an apparatus main body that is suspended from the ground by a wire material such as a wire, a chain or a chain and completely inserted into the ground to descend or rise in the ground. Drive means for driving the excavation means,
A solidifying material spraying unit for spraying the solidifying material and a stirring means for stirring and mixing the excavated soil and the solidifying material are provided, and the solidifying material is sprayed from the ground to the solidifying material spraying unit of the apparatus body. Equipped with a solid material supply hose for supply , and excavated earth and sand and solid material in the main body of the device.
To form a passage through the top and bottom for passing the mixture with
The mixture of earth and sand is forced to move through the passage.
An apparatus for forming a soil solidified body, which is characterized in that it is provided with a transfer means for causing it .