JP4046215B2 - Buffer material compaction device - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to an apparatus used for embedding waste in a vertical hole, and more particularly to an apparatus for compacting a buffer material filled between the waste and the vertical hole.
[0002]
[Prior art]
It has been proposed to use a vertical hole as a facility for disposing of waste that can leak to the outside, for example, radioactive waste. This disposal facility puts radioactive waste in a container, hardens it with cement, etc., installs it in the center of the vertical hole, and fills the space between this radioactive waste and the vertical hole with a cushioning material without any gaps. As a result, even if the vertical hole may be deformed during an earthquake, the cushioning material will follow the vertical hole and deform so that no gaps are created. Has been. Here, as the buffer material, for example, it is considered to use a material containing viscous soil such as bentonite.
[0003]
In the above-described waste embedding method, for example, a vertical hole having a diameter of about 1700 cm and a depth of about 500 cm is formed in the rock, and a buffer material is introduced into the vertical hole to obtain a layer thickness of about 20 cm. Next, an operator descends into the vertical hole, leveling the surface, and pressing the entire surface while repeating partial pressing of the buffer material with a tool such as a trowel. After the cushioning material pressing step, if the cushioning material is further compacted with a vibration compaction device such as a tamping rammer, the first layer compaction step is completed.
Next, a mold is placed on the first layer of cushioning material, and the cushioning material is placed around the mold, which is compacted in the same manner as described above. After repeating the mold placing process and the buffer material compacting process a predetermined number of times, the mold is taken out and a container containing waste is embedded therein. If a buffer material is further put on the container and it is compacted in the same manner as described above, the waste embedding operation is completed.
[0004]
In addition, the process other than the above may be adopted following the compaction process of the first layer. For example, the same work as the first layer is performed without placing the mold on the compacted cushioning material. After repeating a number of times, a vertical hole is formed in the compacted buffer material, a container containing waste is embedded in the vertical hole, and a buffer material is further placed on the container. It is also possible to embed waste containers by solidifying.
[Problems to be solved by the invention]
[0005]
In the above-mentioned waste burying method, the process of leveling the surface of the buffer material, the process of pressing the surface of the buffer material, and the process of compacting the buffer material are all carried out by the workers, so the accuracy and density of flatness There are disadvantages that the uniformity is lowered, the construction time is increased, and the cushioning material is stepped on by the worker's shoes, so that the surface is compacted unevenly.
[0006]
An object of the present invention is to provide a buffer material compaction device capable of compacting a buffer material to a high density and a uniform density in a relatively short time in a vertical hole in which waste is embedded.
[0007]
[Means for Solving the Problems]
According to the present invention, an apparatus for compacting a buffer material in a vertical hole in which waste is buried, the buffer material put into the vertical hole is leveled, and the leveled buffer material is compacted from above. And a pressing means for compacting the compacted buffer material, and a clearance between the pressing means and the inner peripheral surface of the vertical hole is entered, and the buffer material remaining on the inner peripheral surface of the vertical hole is scraped off from the inner peripheral surface of the vertical hole There is provided a buffer material compaction device comprising: scraping means for supporting the pressing means, and supporting means provided outside the vertical hole for supporting the scraping means.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
In the shock absorber compaction device according to the present invention, the pressing means includes a block member that can be moved up and down, swiveled, and dropped in a vertical hole, and a lower end of the block member that is detachably engaged with the block member. The lifting / lowering means for turning and the turning means for turning the block member in the vertical hole can be provided.
[0009]
In the buffer material compaction device of the present invention, it is preferable that the means for releasing the engagement state between the block member and the lower end of the elevating means is provided so as to be adjustable in height.
[0010]
In the shock absorber compaction device according to the present invention, the scraping means includes a blade provided so as to be able to turn in a state in contact with the inner peripheral surface of the vertical hole, an elevating means for moving the blade up and down, and a vertical hole in the blade. And turning means for turning inside.
Here, the swivel means that can rotate in both forward and reverse directions may be used. In this case, it is preferable that the blades are also arranged in both directions. Further, the turning means for turning the scraping means may be configured to use the same turning means as for turning the pressing means.
[0011]
The shock absorber compaction device of the present invention may be provided with traveling means that can move between the vertical holes. When many vertical holes for waste disposal are provided in the ground, it is preferable to provide a traveling means to efficiently move the buffer material compaction device from one vertical hole to another, and this traveling means Although not particularly limited, for example, a track is laid along a plurality of vertical holes, a pulley that travels along the track is provided in the support means, and a drive / control unit that drives and controls the pulley is provided. It can be provided and configured. Other than this, a wheel may be provided on the support means, and a drive / control means for driving / controlling the wheel may be provided.
[0012]
In the buffer material compaction device of the present invention, a means for recognizing the position of the vertical hole is provided, and the pressing means and the scraping means are positioned by the means without detaching from the previously provided vertical hole. You may comprise as follows.
More specifically, as the position recognizing means, image input means such as a CCD camera, image processing means for obtaining the contour line and center point of the vertical hole by performing image processing on the image of the CCD camera, and this image And a control unit such as a CPU for controlling the configuration including the processing means and the video input means. The cushioning material is controlled by controlling the traveling means based on the position data of the vertical holes obtained by the position recognition means. If the compaction device is moved, the pressing means and the scraping means can be positioned on the vertical hole.
[0013]
In the cushioning material compaction device of the present invention, cushioning material introduction means for feeding the cushioning material may be provided in the vertical hole so as to be freely inserted and removed. As the buffer material introduction means, for example, a hopper disposed above the vertical hole and a tube body extending from the hopper into the vertical hole can be configured, and the tube body can be bent. Use something that can be stretched or that can be stretched.
[0014]
【Example】
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
[0015]
FIG. 1 is a side view of the present invention, and the buffer material compacting device 1 is a block member 20 for leveling the buffer material put into the vertical holes 30 and for pressing the leveled buffer material from above. Scrapers 24c and 24d for entering the clearance between the block member 20 and the inner peripheral surface of the vertical hole and scraping the buffer material remaining on the inner peripheral surface of the vertical hole from the inner peripheral surface of the vertical hole during the step of compacting the buffer material; A support frame 11 provided outside the vertical hole is provided to support the block member 20 and the scrapers 24c and 24d.
[0016]
Here, as shown in FIGS. 1 and 4, the support frame 11 connects a pair of support columns 11b with a beam member 11a, connects opposite beam members 11a with a connection member 11d, and lowers the lower end of the support column 11b. The ground plate 11c is fixed to the outer periphery of the vertical hole 30 by an anchor (not shown). Although not shown, when the cushioning material compacting device 1 itself is configured to be movable between vertical holes, the grounding plate 11c is not provided, and a wheel such as a tire or a pulley is pivotally attached to the lower end of the column 11b. If necessary, a rail on which the pulley travels is laid.
[0017]
A swivel disk 15a is rotatably fixed on the beam member 11a of the support frame 11 via a bearing. A rack 15b is formed on the outer periphery of the swivel disk 15a, and a pinion (not shown) is engaged with the rack 15b. ) Is mounted on the support frame 11. With this configuration, when the motor 16 is driven, rotational force is transmitted from the pinion through the rack 15b, and the swivel board 15a is rotationally driven in a predetermined direction. .
[0018]
The swivel board 15a has a through hole in the center, and the upper pipe 14 inserted through the through hole is fixed to the swivel board 15a by an attachment such as a bracket. A telescopic jack 26 is inserted into the upper pipe 14 and is fixed to the upper end and suspended. A detachable section 40 (to be described later) is attached to the lower end of the jack rod 25 that enters and exits from the lower end of the telescopic jack 26. Provided.
[0019]
The upper end of the lower pipe 19 is inserted into the lower end of the upper pipe 14, and guide members 27 and 28 including guide rollers are attached to the insertion portion, whereby the lower pipe 19 has its upper end inside the upper pipe 14. It is guided to move up and down in the inserted state. The jack rod 25 extends inside the lower pipe 19, and the jack rod 25 detachably supports the lower pipe lower portion 19 a via the attaching / detaching portion 40. A lower pipe lower portion 19a is integrally connected to the lower end of the lower pipe 19, and a block member 20 is connected so as to be substantially orthogonal to the lower pipe lower portion 19a. As shown in FIG. 5, the block member 20 has a fan-like planar shape extending from the lower pipe lower portion 19a to both sides, and the lower surface is formed flat.
Note that the lower pipe lower portion 19 a can be omitted. In this case, the block member 20 is connected to the lower end of the lower pipe 19, and the detachable portion 40 is formed on the block member 20.
[0020]
Further, a sleeve 24b extending in a substantially vertical direction is fixed to the swivel board 15a at two opposing positions. A scraper support rod 24a is slidably inserted into the sleeve 24b, and a scraper 24c, 24d is fixed, and a wire 22 is connected to the upper end of the scraper support rod 24a. The wire 22 is wound around the winch 21 through the pulley 12a so as to be freely wound and unwound. As shown in FIG. 5, the scrapers 24 c and 24 d are provided in directions opposite to each other, and a blade 24 e is provided in each scraper 24 c and 24 d so as to contact the inner peripheral surface of the vertical hole 30. The pulley 12a is fixed to the upper end of the upper pipe 14 by a pulley fitting 12b, and the winch 21 is fixed to the swivel 15a.
Therefore, when the turning table 15a is turned, the blades 24e of the scrapers 24c and 24d are turned in contact with the inner peripheral surface of the vertical hole 30, and scrape the buffer material left on the inner peripheral surface. When the winch 21 is operated, the wire 22 is wound or unwound, the scraper support rod 24a slides up and down in the sleeve 24b, and the scrapers 24c and 24d are moved up and down in the vertical hole 30.
[0021]
In the above configuration, since the lower pipe 19, the lower pipe lower portion 19a and the block member 20 are integrally connected, these members fall together when the vertical engagement in the detachable portion 40 is released.
The attachment / detachment portion 40 will be described in more detail. FIG. 3 is an enlarged side view of the attachment / detachment portion 40, as viewed from a direction rotated about 90 ° from the cross section of FIG. In FIG. 3, a roller 41b that rolls along the inner surface of the lower pipe 19 is fixed to the lower end of the jack rod 25 via a bracket 41a, and the jack rod 25 comes into contact with the inner surface of the lower pipe 19 by this roller 41b. Without being guided up and down. A catch bracket 42 is connected to the lower end of the jack rod 25. The catch bracket 42 is provided with a limit device 43, a hook pin 44, and a contact plate 42a.
[0022]
The hook pin 44 is for detachably hooking the hook 48a. The limit device 43 is a sensor for detecting the engagement between the hook 48a and the hook pin 44 and the engagement release, and the signal from the limit device 43 is sent to a control unit (not shown) to detect the engagement between the hook 48a and the hook pin 44. The expansion of the expansion jack 26 is stopped when it is sensed, and the contraction of the expansion jack 26 is stopped when it is detected that both members have been released. The contact plate 42 a is for preventing damage due to the collision between the catch bracket 42 and the hook mounting bracket 45.
[0023]
On the other hand, a hook mounting bracket 45 is fixed to the upper surface of the lower pipe lower portion 19a. The hook mounting bracket 45 is provided with a spring 47, a contact plate 45a, and a hook 48a pivotally attached by a pivot 46. .
The hook 48a is integrally formed with an arm 48b projecting to the outside of the lower pipe 19, and a roller 48c is pivotally attached to the tip of the arm 48b. A lower end portion 13c of the drop level adjusting member 13a is attached to the roller 48c. By hitting, the hook 48a and the hook pin 44 are unlocked. The spring 47 is an urging means that urges the arm 48 b to push upward. The force of the spring 47 is transmitted from the arm 48 b to the hook 48 a, and the hook 48 a is always pushed back to a position where it is engaged with the hook pin 44. The contact plate 45a is for preventing damage due to collision between the catch bracket 42 and the hook mounting bracket 45 by contacting the contact plate 42a.
[0024]
Here, the attaching / detaching action of the attaching / detaching portion 40 will be described.
When the telescopic jack 26 contracts while the hook 48a is engaged with the hook pin 44, the lower tube 19, the lower tube lower portion 19a and the block member 20 are pulled upward, and the roller 48c hits the lower end portion 13c of the drop level adjusting member 13a. . Thereby, the arm 48b is pushed down like the two-dot chain line in FIG. 3, the hook 48a is detached from the hook pin 44, and the lower tube 19, the lower tube lower portion 19a and the block member 20 are dropped. At this time, the engagement between the hook 48a and the hook pin 44 is detected by the limit device 43, and the control unit stops the contraction of the telescopic jack 26 in response to the detection signal.
Conversely, when pulling down the lower pipe 19, the lower pipe lower portion 19 a and the block member 20 that have dropped onto the buffer material, the expansion jack 26 is extended to extend the jack rod 25 downward. As a result, the hook pin 44 at the lower end of the jack rod 25 abuts against the hook 48a, rotates the hook 48a against the force of the spring 47, and further the expansion jack 26 extends to pass the hook pin 44 downward. The hook 48a is biased by the spring 47 and returns to the initial position. When the limit device 43 senses that the hook 48a has returned to the initial position, the control unit stops the extension of the telescopic jack 26.
[0025]
Further, in the buffer material compacting device 1, a hopper 18a for putting the buffer material into the vertical hole 30 is rotatably fixed by the mounting member 17, and a flexible tube 18b is connected to the hopper 18a. Is done. The tube body 18b can be inserted and removed from the vertical hole 30 by rotating the hopper 18a as appropriate and bending the tube body 18b. In addition, instead of using a tube that can be bent, if a tube that can be expanded and contracted is used, the tube body can be freely inserted and removed from the vertical hole 30.
[0026]
Further, the shock absorber compaction device 1 is provided with a drop level adjusting member 13a formed in a rod shape, which is inserted into a sleeve 24b provided in a substantially vertical direction on the swivel board 15a. It is stopped at a predetermined height by a stopper (not shown) provided. Further, a bolt is screwed to the lower end 13c of the drop level adjusting member 13a, and the protruding length of the bolt is appropriately adjusted by adjusting the screw. Accordingly, when adjusting the height of the drop level adjusting member 13a, first, a rough height is determined by fixing the position of the drop level adjusting member 13a in the sleeve 24b, and then the bolt at the lower end 13c is screwed. Make fine adjustments by adjusting.
The falling buffer material compaction device 1 may be provided with means for automatically performing vertical movement and stopping operation of the sleeve 24b of the lower level adjusting member 13a and screwing operation of the bolt of the lower end 13c. As a means for this automation, for example, a configuration may be adopted in which a rotary encoder is built in the fall level adjustment member 13a, a motor is attached to the swivel 15a, and the fall level adjustment member 13a is automatically raised and lowered by this motor.
[0027]
Next, operation | movement of the buffer material compaction apparatus 1 whole is demonstrated.
When the buffer material compacting device 1 is moved from a predetermined vertical hole 30 to another vertical hole 30, the block member 20, the scrapers 24 c and 24 d, the drop level adjusting member 13 a, and the pipe body 18 b are pulled up from the vertical hole 30. That is, the block member 20 is raised by contraction of the expansion jack 26, the scrapers 24c and 24d are pulled up by winding the wire 22 by the winch 21, and the drop level adjusting member 13a and the pipe body 18b are pulled up manually.
[0028]
When the buffer material compacting device 1 is installed on the predetermined vertical hole 30, the pipe body 18b is put into the vertical hole 30, and the buffer material containing bentonite and the like is passed from the hopper 18a to the bottom of the vertical hole 30 through the pipe body 18b. throw into. The buffer material has a capacity corresponding to the thickness of the lowermost layer. Next, when the telescopic jack 26 is extended to lower the block member 20 to a predetermined depth in the vertical hole 30, the motor 16 is driven while the block member 20 is gradually lowered to rotate or rotate the turntable 15a. Let Thereby, the block member 20 is spread | laid and leveled so that a buffer material may become substantially the same height. Further, in the cushioning material leveling step, the scraper 24c, 24d is lowered to the vicinity of the surface of the buffer material by operating the winch 21 in the middle of the step, and the scrapers 24c, 24d are rotated together with the block member 20, The buffer material left on the inner peripheral surface of the vertical hole 30 is scraped off.
[0029]
When the cushioning material has been leveled, the block member 20 then presses and solidifies the cushioning material. In this step, in a state where the rotation or rotation of the swivel board 15a is stopped, the telescopic jack 26 is extended to press the buffer material on the lower surface of the block member 20. After this pressing, the telescopic jack 26 is contracted to pull up the block member 20, and the block member 20 is rotated about 20 ° by the swivel board 15a to shift the position on the non-pressed cushioning material. Similarly, the buffer material is pressed on the lower surface of the block member 20. Thereafter, these operations are repeated, and the entire surface of the buffer material is pressed by the block member 20.
[0030]
After the entire surface of the buffer material is pressed and hardened, a step of dropping the block member 20 from a predetermined height and compacting the buffer material is then performed. Prior to this compacting step, the height of the lower end 13c of the drop level adjusting member 13a is appropriately adjusted according to the drop height of the block member 20. In the buffer material compaction process, when the telescopic jack 26 contracts and the block member 20 is pulled up and the block member 20 rises to a height determined by the lower end 13c of the drop level adjusting member 13a, as described above, the detachable portion 40 The hook 48a and the hook pin 44 are released from each other, and the lower pipe 19, the lower pipe lower portion 19a, and the block member 20 are integrally dropped onto the buffer material. The buffer material is compacted on the lower surface of the block member 20 by the fall. When the telescopic jack 26 is extended after the block member 20 is dropped, the hook 48a and the hook pin 44 in the attaching / detaching portion 40 are engaged as described above. Then, the telescopic jack 26 is contracted to pull up the block member 20, and the block member 20 is rotated about 20 ° by the swivel board 15 a to shift the position on the buffer material that has not fallen, and then the same as described above. As a result, the hook 48a and the hook pin 44 are released from engagement, and the lower pipe 19, the lower pipe lower portion 19a, and the block member 20 fall together on the cushioning material. Hereinafter, if these operations are repeated, the entire surface of the buffer material is compacted by the block member 20, and the compaction process of the buffer material is completed.
In the following, if necessary, the buffer material in the longitudinal hole 30 can be compacted to a high density and a uniform density in a relatively short time by repeating the buffer material charging step to the buffer material compaction step as necessary. .
[0031]
【The invention's effect】
The cushioning material compaction device of the present invention includes a pressing means and a scraping means supported by the supporting means, and the cushioning material thrown into the vertical hole is leveled by the pressing means, and the cushioning material leveled is The buffer material pressed and compacted from above is compacted, and further, the buffer material that enters the clearance between the pressing means and the inner peripheral surface of the vertical hole is left in the vertical hole by the scraping means. Since it is scraped off from the inner peripheral surface, the buffer material thrown into the vertical hole can be compacted to a high density and a homogeneous density in a much shorter time than a manual operation by a conventional worker. became.
[Brief description of the drawings]
FIG. 1 is a side view of a buffer material compaction device of the present invention.
FIG. 2 is a longitudinal sectional view of the buffer material compaction device of the present invention.
FIG. 3 is an enlarged side view showing a hook portion of a block member.
4 is a cross-sectional view taken along line IV-IV in FIG.
5 is a cross-sectional view taken along line VV in FIG. 1. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Buffering material compaction apparatus 11 Support frame 13 Falling level adjustment member 15 Turning part 16 Motor 18 Buffering material introduction part 20 Block member 21 Winch 22 Wire 26 Telescopic jack 24c, 24d Scraper 26 Telescopic jack 30 Vertical hole 40 Block attaching / detaching part

Claims (5)

A device for compacting the buffer material in the vertical hole in which waste is buried, the buffer material put in the vertical hole is leveled, the buffer material that has been leveled is compressed from above, and the buffer is compacted A pressing means for compacting the material, and a scraping means for scraping the buffer material remaining in the inner peripheral surface of the vertical hole from the clearance between the pressing means and the inner peripheral surface of the vertical hole. A shock-absorbing material compacting device, comprising: a support means provided outside the vertical hole for supporting the pressing means and the scraping means. The pressing means includes a block member that can be moved up and down, swiveled, and dropped in a vertical hole, a lifting means that detachably engages the lower end of the block member, and moves the block member vertically. The cushioning material compacting device according to claim 1, further comprising a swiveling means for swiveling in the hole. The shock absorber compaction device according to claim 2, wherein means for releasing the engagement state between the lower end portion of the elevating means and the block member is provided so as to be adjustable in height. The scraping means includes a blade provided so as to be able to be raised and lowered while being in contact with the inner peripheral surface of the vertical hole, an elevating means for raising and lowering the blade, and a turning means for turning the blade within the vertical hole. The buffer material compaction device according to claim 1, further comprising: a shock absorber compaction device according to claim 1. The buffer material compaction device according to any one of claims 1 to 4, further comprising a buffer material introduction unit that is detachably provided in the vertical hole for charging the buffer material.

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