JP2002341093A - Waste treatment method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively utilize a disposal space of a discard, to increase the stationary volume of the discard, to dispose the discard by highly-reliable remote operation with a comparatively-simple inexpensive constitution, to execution an accurate stationary work, and to install, simply, compactly and surely a partition wall required for filling mortar or the like in the disposal space, in a tunnel type disposal facility or the like for radioactive waste or the like. SOLUTION: The discard A is conveyed successively by a conveyance vehicle 21 running on a running groove or the like as a guide along the longitudinal direction on the bottom of a housing pit 2 installed by being surrounded by a peripheral filler 3 in a tunnel 1. At a prescribed stationary position, the discard A on the first stage on a load-carrying platform of the conveyance vehicle is transferred on a stationary stand 22 by pushing, and the discards A on the second and after stages are transferred on the discard A on the lower stage by pushing after raising the load-carrying platform. After the stationary work of one block is finished, a door of the shutter type partition wall 10 installed on the front is pulled down, and the mortar 4 is filled in the pit 2 by using the door as an end frame.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste disposal method for placing a waste in a disposal space in a facility for burying radioactive waste or the like.

[0002]

2. Description of the Related Art Low-level radioactive waste and TRU (trans
(uranium) As a method of disposing of waste, 50m to 300m underground
A method has been considered in which waste is buried and disposed in a tunnel excavated in bedrock at a depth of about m or less. FIG. 10 shows an example of such a waste burial disposal facility. This tunnel-type waste burial disposal facility excavates a tunnel 1 in a bedrock by a mountain tunnel construction method or the like, and constructs a concrete pit 2 in which a waste body A is to be placed in a lower central portion of the tunnel, and the periphery of the pit 2 Is filled with an outer peripheral filler 3 made of a mixed soil containing bentonite as a main component.

The waste A is suspended from the upper opening of the pit 2 into the pit 2 by using a stationary crane running on the pit 2 in the longitudinal direction of the tunnel. The waste body A is a closed container having a rectangular parallelepiped shape or the like, and is stacked vertically and horizontally in the pit 2 in a plurality of rows and a plurality of stages. When a predetermined number of waste bodies A are fixed in the longitudinal direction of the tunnel, a partition wall (not shown) is installed on the front surface thereof as a frame. The gap between the waste body A and the pit 2 in the stationary space partitioned by the partition wall is filled with a filler 4 made of a cement-based material such as mortar, and the upper opening is covered with a concrete lid 2a.

[0004] The above-described stacking and placement of the waste A, installation of the partition wall, filling of the filler 4 and the like are sequentially repeated. When the placement of a predetermined number of sections is completed, the stationary crane is removed and the pit 2 is removed. Is covered with the outer peripheral filling material 3 and the upper space of the tunnel 1 is backfilled with the backfill soil 5 to complete the stationary work.

[0005]

The stationary crane used for the stationary operation of the waste body includes a traveling body running on a pair of left and right rails laid on the upper surface of the concrete pit 2 in parallel with the longitudinal direction of the tunnel, and a hoisting device. And a space 6 for a stationary crane is required above the pit 2 as shown in FIG. If the weight of the waste body exceeds 10 tons, the crane height is 7 to 8
m, and the crane occupies the upper space such as the tunnel 1. Therefore, there is a problem that the height of the pit 2 is reduced, and the fixed volume of the waste body is drastically reduced.

As a means for solving such a problem, there has been proposed a system in which a forklift or the like is moved in the longitudinal direction of a tunnel to perform a stationary operation. However, in this method,
When the weight of the waste body is several tens of tons, there is a problem that a forklift or the like becomes huge. It is necessary to dispose of radioactive waste with a high radioactivity concentration remotely.However, in order to run parts without guides by remote control and to accurately place the waste body in the fixed position, the reliability at present is high. -Poor reality.

Further, it is conceivable that the partition wall is formed in a panel shape and is installed unmanned by using a stationary crane. However, the panel-shaped partition wall is provided in the concrete pit 2 with a gap between the partition wall and the inner wall surface. It is difficult to install the apparatus unattended so as not to cause the problem, and there is a problem that when a sufficient gap is provided, an operation for filling the gap is required.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to effectively utilize a disposal space of a waste body and increase a stationary volume of the waste body. In addition, a relatively simple and inexpensive device configuration enables the waste to be disposed of by highly reliable remote control, and allows for highly accurate stationary work. It is an object of the present invention to provide a waste disposal method which can easily and surely install a partition wall required for casting a system material without gaps.

[0009]

A first aspect of the present invention is a waste disposal method for sequentially transporting wastes into a processing space and placing the wastes at a predetermined stationary position in the disposal space. After the bodies are sequentially conveyed and a predetermined number of waste bodies have been set in place, a shutter-type partition wall (wife frame) is lowered in front of the set bodies, and a filler (a cement such as mortar or the like) is placed in the fixed space partitioned by the partition walls. (A system material). For example, wastes are sequentially transported by a transport vehicle traveling on guides (travel grooves, travel rails, etc.) provided on the bottom surface of the disposal space, and the wastes on the carrier of the transport vehicle are fixed at a predetermined stationary position. (Bottom spacer), the carrier of the transport vehicle is raised, and the waste on the carrier is transferred onto the waste on the stationary gantry.

According to a second aspect of the present invention, there is provided the waste disposal method according to the first aspect, wherein the disposal space is a disposal tunnel excavated in rock. This disposal tunnel is a horizontal or inclined tunnel, and is excavated by a mountain tunnel method, a shield method, or the like. The present invention is applicable not only to the disposal tunnel but also to any type of disposal space.

According to a third aspect of the present invention, in the method for placing a waste body according to the first or second aspect, a storage body for the waste body is provided in the disposal space, and the storage body is disposed at a predetermined stationary position in the storage body. A waste disposal method characterized by stacking and placing waste bodies, and installing a shutter-type partition wall in a stored state above the storage frame. That is, in the case of radioactive waste, a storage skeleton (concrete pit, etc.) is constructed in a disposal space such as a tunnel, and a buffer function, low water permeability, and low diffusion of radioactive materials are provided around this storage skeleton. It is preferable to bury the waste in a buried disposal facility provided with an outer peripheral filler made of bentonite mixed soil.

According to a fourth aspect of the present invention, in the waste disposal method according to the third aspect, a partition (shielding door) is provided above the section where the predetermined number of waste bodies have been set and the filler has been filled. And a filling operation of a waste body in a next section and a filling operation with a filler (such as mortar). That is, a partition wall is installed above the storage body at the front of the compartment (the end face on the side where the waste is loaded) where the filler is completely filled, and the front of the partition is used as a management area for the waste placement work, and the rear of the partition is located behind the partition. Is a work area where workers can enter. A mixer truck or the like is brought close to the partition in the work area, a mortar supply pipe or the like is penetrated through the partition and arranged to the next section, and the next section is filled with mortar or the like.

According to the first to fourth aspects of the present invention, the vehicle for transporting wastes includes a loading platform which is lifted and lowered by a hydraulic jack or the like on a tire-type or wheel-type vehicle which travels by using a traveling groove, a traveling rail or the like as a guide. It is preferable to use one provided with a waste pushing-in device such as a hydraulic jack capable of pushing the above waste. The stationary pedestal is transported by a dedicated transport vehicle or the like and installed at a predetermined stationary position. The first-stage waste is transported by the waste transport vehicle, and is transferred onto the stationary pedestal by pushing. 2
The waste above the first stage is lifted up in front of the stationary gantry and is transferred onto the lower waste by pushing.
The stationary pedestal is provided so that the first-stage waste body can be easily transferred from the transport vehicle and fixed, and the lower part of the stacked waste body can be filled with the filler. .

Further, guide grooves and guide rails are provided on the upper surface of the waste body, the stationary gantry, and the loading platform, and rolling or sliding bodies such as wheels and rollers are provided on the lower surface of the waste body, so that the waste body can be smoothly disposed. It is preferable that transfer can be performed with high accuracy.

[0015] In the above configuration, the transport vehicle travels in the disposal space, and the first stage pushes the waste body on the carrier to transfer it to the stationary gantry, and the second stage or higher transports the carrier of the carrier. Lifting up and pushing the waste body on the loading platform to transfer it to the lower waste body and stacking the waste body in multiple stages, eliminating the need for the conventional stationary crane and making effective use of the disposal space. it can. In particular, in a tunnel-type disposal facility, the storage efficiency of wastes is greatly improved by eliminating the installation space for a stationary crane that occupies a large portion of the upper part of the disposal space.

Since the transporter of the waste body travels on a guide such as a traveling groove or a traveling rail, the vehicle is disposed in comparison with a forklift system.
The reliability of remote operation is remarkably improved, and the waste can be quickly and accurately placed at a predetermined stationary position.

The transporter transports the waste by placing the waste on the carrier, lifting up the second and subsequent stages, and pushing it in with a pushing device, so that the waste is transferred. Therefore, there is no need for a counterweight or the like, and it is very compact and simple. Structure and high reliability as a mechanical and operating system, and economical.

By simply pushing in the wastes to be stacked on top by the wheels and the like on the lower surface of the wastes and the guide grooves on the upper surface of the wastes, the stationary gantry, and the loading platform, the wastes can be easily and accurately stacked. .

Since the partition walls are of a shutter type, the partition walls can be installed easily and in a short time inside a storage frame or the like in which a predetermined number of wastes have been fixed, and the storage frame or the like can be installed. Can be reliably partitioned without any gaps, and the filler such as mortar does not leak.

A partition is installed on a shutter-type partition wall to completely shut off a control area where wastes are carried in and fixed, and a work area where a person cannot approach due to radiation or the like on the opposite side. , Mortar and the like can be safely performed, and a mixer truck or the like can be brought closer to perform the filling operation.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on embodiments shown in the drawings. This embodiment is an example in which the present invention is applied to a radioactive waste burial disposal facility in which a concrete pit is installed in a three-core circular tunnel by a mountain tunnel method. FIG. 1 shows an example of a tunnel-type buried disposal facility to which the present invention is applied. FIG. 2 shows an example of a waste body transporting device and the like used in the present invention. FIG. 3 shows an example of a partition wall of a concrete pit used in the present invention.

As shown in FIG. 1 (a), a three-core tunnel 1 as a disposal tunnel is excavated by a mountain tunnel method in a bedrock having a depth of about 50 m to 300 m below the ground, and a waste disposal tunnel is provided at the center of the tunnel. A concrete pit 2 is constructed as a storage body in which the body A is to be fixed, and an outer peripheral filler 3 made of a mixed soil mainly composed of bentonite is installed around the pit 2 so as to surround the entire circumference. On the inner surface of the tunnel 1, a shotcrete 1a and a secondary lining 1b are constructed. The bentonite mixed soil of the outer peripheral filler 3 is a material having a buffer function, a low water permeability, and a low diffusion property of a radioactive substance, and can reduce the influence of rock pressure and groundwater and delay the transfer of nuclides.

The waste body A is a rectangular parallelepiped hermetic container in which metal or concrete waste hardened by cement, asphalt, or the like is stored. The waste body A is vertical and horizontal in a cross section orthogonal to the longitudinal direction of the tunnel in the pit 2. Are stacked in multiple rows and multiple levels. Furthermore, when a predetermined number of such waste bodies A in a plurality of rows and a plurality of stages are set in the longitudinal direction of the tunnel, as shown in FIG. A wall 10 is provided to limit the number of wastes A placed in one section. Partition wall 10
The gap between the waste body A and the pit 2 in the stationary space partitioned by the above is filled with a filler 4 made of a cement-based material such as mortar.

On the disposal section filled with the filler 4,
A movable bulkhead (shielding door) 11 is installed, and the waste area A is stacked in the next section in a state where the management area 12 on the waste body entrance side and the work area such as mortar filling on the opposite side are shut off. Perform stationary work. The stacking and placement of the waste bodies A, the installation of the partition wall 10, the filling of the filler 4 and the like are sequentially repeated as described above.
As shown in (a), the pit 2 is covered with the outer peripheral filler 3 and the upper space of the tunnel 1 is backfilled with the backfill soil 5 to complete the stationary work.

In the above-mentioned buried disposal facility, in the present invention, as shown in FIG. 2, a plurality of running grooves 20 parallel to the longitudinal direction of the tunnel are formed on the bottom surface of the concrete pit 2, and a pair of running grooves 20 on the left and right sides are formed. , 20 is used as a guide to move the carrier 21 for the waste A, and a plurality of the waste A are stacked and placed on a stationary base (bottom spacer) 22 installed at a predetermined stationary position. The stationary gantry 22 is provided so that the first-stage waste body A can be easily transferred from the transport vehicle 21 to be stationary, and the lower part of the stacked waste body A can be filled with the filler 4. Installed to do. The stationary gantry 22 is transported by a dedicated transport vehicle 23.

A plurality of running grooves 20 are provided according to the number of rows of the disposed waste bodies A in the tunnel width direction. Similarly, the stationary gantry 22 is also arranged in the tunnel width direction by the number of rows of the waste bodies A, and is installed so as to be located at each laying position of the pair of traveling grooves 20, 20. Further, a predetermined number of stationary pedestals 22 are sequentially installed in the longitudinal direction of the tunnel. In the case where the waste bodies A are arranged in three rows in the width direction of the tunnel, if the number of the traveling grooves 20 is six, a plurality of transport vehicles 21 can travel at the same time. Further, even if the number of the traveling grooves 20 is four, the waste bodies A can be fixed in three rows by appropriately selecting the two traveling grooves 20.

As shown in FIG. 2 (a), the transport vehicle 21 for the waste body A is constructed by connecting a transport vehicle 24 for the waste body A and a driving vehicle 25 having a waste body pushing device 26. I have. The transport trolley 24 is constructed by providing a plurality of hydraulic jacks 28 on a non-driven trolley body 27 of a rubber tire type, and attaching a horizontal loading platform 29 to the rod end of the hydraulic jack 28 to synchronize the plurality of hydraulic jacks 28. By operating, the loading platform 29 can be raised and lowered with a predetermined stroke.

The driving vehicle 25 is provided with a plurality of hydraulic jacks 31 on a rubber tire type vehicle main body 30 which can be self-propelled by a driving motor or the like, and a horizontal lift 32 is attached to a rod end of the hydraulic jack 31. A waste body pushing device 26 composed of a hydraulic jack or the like is mounted on the elevating platform 32, and a plurality of hydraulic jacks 31 are operated in synchronism to raise and lower the elevating platform 32 and the waste body pushing device 26 at a predetermined stroke. Can be done.

On the lower surface of the carriage main body 27 of the transport carriage 24,
A direction support device 33 including a pair of vertical rollers, wheels, and the like sandwiching a convex portion between the pair of running grooves 20, 20 from both left and right sides.
Are provided to improve the right and left traveling accuracy.

As shown in FIG. 2 (b), the carrier 23 of the stationary gantry 22 has the same configuration as that of the above-described drive vehicle 25, and can be driven by a drive motor or the like.
4, a plurality of hydraulic jacks 35 are provided, a horizontal lift 36 is attached to the rod end of the hydraulic jack 35, and a gripping device 37 is provided on the front surface of the lift 36. The gripping device 37 is composed of, for example, a pair of left and right clamp bars that protrude horizontally, and allows the stationary gantry 22 to be attached and detached by opening and closing the pair of clamp bars. Note that the above-described direction support device is also provided in the transport vehicle 23 to improve the left and right traveling accuracy.

The waste body A is placed on the loading platform 29 of the transport vehicle 24 of the transport vehicle 21 and the transport vehicle 24 is pushed by the drive vehicle 25, thereby transporting the waste material A and disposing the waste material A at a predetermined stationary position. Is slid and pushed into the stationary frame 22 or the lower waste body A from the loading platform 29 by the waste body pushing device 26. Therefore, as shown in FIG. 2 (c), steel wheels (or ball bearings, etc.)
40, and a pair of left and right steel guide grooves 41 and 42 parallel to the longitudinal direction of the tunnel for guiding the wheels 40 are provided on the upper surfaces of the waste body A, the stationary gantry 22 and the loading platform 29, respectively. Enables accurate transfer.

The end of the waste body A and the guide groove 41 on the upper surface of the stationary gantry 22 on the carry-in side are formed in a trumpet shape that opens toward the carrier in plan view, and the waste body A on the loading platform 29 is smoothly transferred. It can be so. Further, a stopper 43 for stopping the wheel 40 is provided in the guide groove 41 so as to be able to protrude and retract, so that the transferred waste body A is positioned and fixed. Further, it is preferable that a similar stopper is provided in the guide groove 42 of the loading platform 29 so as to be able to protrude and retract so that the waste body A can be fixed at the time of transportation.

It is needless to say that the above-described waste transfer apparatus is not limited to the illustrated example, but may be of another structure. For example, the carrier 21 may be a traveling system using traveling rails and wheels.

Further, in the present invention, the partition wall 10 as a wife frame is of a shutter type. That is, as shown in FIG. 3, the partition wall 10 includes a flexible door body 51 and a storage body 50 in which the door body 51 is wound and stored.
It is installed on the upper surface of the concrete pit 2 in advance. When the stacking and placing work of the waste bodies A in one section is completed, the door body 51 is automatically unwound from the storage body 50 and lowered. A guide groove 52 for a door body 51 is provided on both side walls 2b of the concrete pit 2. A storage groove 53 for storing the lower end of the door body 51 is also provided on the bottom 2 a of the concrete pit 2.
Is provided.

FIGS. 4 and 5 show one example of the operation of burying and disposing of waste.
This is an example, and the waste is buried and disposed according to the following procedure (see FIGS. 4 and 5).

(1) As shown in FIG. 5, a bottom bentonite 3a is installed in the lower part of the tunnel 1. For this construction, a front attachment is attached to the backhoe, and the work is performed manually and mechanically.

(2) As shown in FIG. 5, the bottom 2a of the concrete pit 2 is constructed on the bottom bentonite 3a.

(3) As shown in FIG. 5, the side wall 2b of the concrete pit 2 is constructed. The side wall 2b includes, for example, a precast column 2b-1 and a precast wall 2b-2.
It is composed of As shown in FIG.
A gripping device 6 which is an improved rebar gripping device capable of performing minute movements such as rotation in any direction (XYZ directions) at the tip of the boom 0.
1 is used, a precast column 2b-1 is built, and then a precast wall 2b-2 is built.

(4) As shown in FIG. 5, side bentonite 3b is applied to the outside of the side wall 2b. Also in this case, a front attachment is attached to the backhoe, and the work is performed by human power and mechanical construction.

(5) As shown in FIG. 5, wastes A are stacked in the concrete pit 2 in a plurality of rows and a plurality of stages, and a predetermined number of the wastes A in the plurality of rows and the plurality of stages are fixed in the longitudinal direction of the tunnel. Then, as shown in FIG. 5, the shutter-type partition wall 10 which is installed in advance is lowered.

(6) As shown in FIG. 5, mortar 4 is filled in a fixed space in concrete pit 2 partitioned by shutter-type partition wall 10. Here, as shown in FIG. 1 (b), at both ends of the tunnel 1, a bottom connection tunnel 13 for transporting waste and an upper connection tunnel 14 for work such as mortar filling are connected respectively. A worker performs mortar filling work in a work area shielded from the area 12 by the partition wall 10 and the partition wall 11. On the other hand, the waste body A is transported by a transport vehicle (a dedicated trailer or the like) traveling in the bottom connection tunnel 13 to the transfer chamber 16 partitioned by the two partition walls 15, where the waste body A is transported.

(7) When all the stationary work of the tunnel 1 is completed, the upper bentonite 3c is constructed as shown in FIG.

FIGS. 7 to 9 show an example of the work of placing the waste body. The work of placing the waste body is performed in the following procedure (see FIGS. 7 to 9).

(1) As shown in FIG. 7, a movable partition 11 is installed on the upper side of the mortar-filled section on the carry-in side, and a waste body A is positioned as needed on the front of this section. And a spacer 70 for preventing the waste A from tipping over, and the concrete pit 2 in front of the section is provided.
A shutter-type partition wall 10 is previously installed in a stored state on the upper surface of the device. In such a state, the transport vehicle 2
By 3, the stationary gantry 22 is transported to the stationary position. The stationary gantry 22 is gripped by the gripping device 37, and the lift 36 is slightly jacked up and transported.

(2) As shown in FIG. 7, the elevator 36 is jacked down at the stationary position, the grip is released, and the stationary platform 22 is stationary.

(3) As shown in FIG. 7, the transporter 21 transports the first-stage waste body A to the stationary position.

(4) As shown in FIG.
The upper surface of the loading platform 29 and the upper surface of the stationary gantry 22 are flush, and the first-stage waste body A is pushed by the pushing device 26,
It is transferred onto the stationary stand 22. The waste body A is positioned by the spacer 70 if necessary. The spacer 70 is also effective in preventing the waste A from falling.

(5) As shown in FIG. 8, the second stage waste A is transported by the transport vehicle 21 to the stationary position.

(6) As shown in FIG.
The loading platform 29 of the transport vehicle 24 and the lifting platform 32 of the driving vehicle 25 are jacked up immediately before, and the second-stage waste body A is pushed by the pushing device 26 to be transferred onto the first-stage waste body A. The waste body A of the third stage or higher is similarly set, but if the jack-up stroke is not enough, the carrier having the raised bogie main body 27 'and the vehicle main body 30' as shown on the right side of FIG. 21 'can also be used.

(7) As shown in FIG. 9, when the work of placing the waste body A in one section is completed, the door body 51 of the shutter-type partition wall 10 is lowered. After the construction of the concrete pit 2, a plurality of the partition walls 10 are installed at predetermined positions in advance. Alternatively, it may be installed every time the stationary work of the waste A in one section is completed.

(8) As shown in FIG. 9, a mortar supply pipe 80 is previously piped through the partition wall 11 to penetrate the partition wall 11, and the mortar 4 is provided with the door body 51 in the fixed space in the concrete pit 2. Filled as wife frame.

(9) As shown in FIG. 9, when the filling of the mortar 4 is completed, the partition 11 is moved by one section.
The above steps are repeated.

In the stationary work described above, the carrier 21
It can be arranged in each row and operated simultaneously. The transport process of the transport vehicle 21, the operation of the shutter-type partition wall 10, and the like can be automatically performed by remote control under computer control.

When all the stationary work of the tunnel 1 is completed, as shown in FIG. 1, the upper bentonite 3c is constructed on the concrete pit 2 and the upper space of the tunnel 1 is backfilled with backfill soil 5, Next, the main tunnel, connecting tunnel, and access tunnel are backfilled, the ground facilities are dismantled and removed, and burial disposal is completed.

In the present invention as described above, the space 6 for the conventional stationary crane shown in FIG. 10 can be eliminated, and as shown in FIG. Can be stacked higher than before.

Also, since the transporter 21 for the waste body and the transporter 23 for the stationary gantry travel with the traveling groove 20 as a guide, the reliability of remote operation is greatly improved as compared with a trackless forklift system or the like. The waste bodies A in each row and each stage can be quickly and accurately placed at the fixed position.

Further, the waste transporting vehicle 21 has a carrier 29
The heavy waste A is placed on the second stage, and the second stage or higher is lifted up by the hydraulic jack 28 or the like, and the waste A is transferred by being pushed in by the pushing device 26. It is unnecessary, has a very compact and simple structure, and is reliable and economical as a mechanical and operating system.

The wheels 40 on the lower surface of the waste body A and the guide grooves 41 on the upper surface of the waste body A and the stationary base 22 and the guide grooves 42 on the loading platform 29 simply push the waste bodies A stacked on top of each other. Accumulation of waste can be performed with high accuracy.

Further, since the partition walls are of the shutter type, the partition walls can be installed unattended and easily in a short time in the concrete pit in which the fixed work of the predetermined number of waste bodies A has been completed. The inside can be reliably partitioned without gaps, and the filler such as mortar does not leak.

Further, a partition 11 is installed on the partition wall 10 of the shutter type, and a mortar 4 is provided in order to completely shut off the control area where the waste A is carried in and fixed and the work area on the opposite side. The filling operation and the like can be performed safely, and the filling operation can be performed by bringing a mixer truck or the like closer.

The construction method of the tunnel as a disposal space
The shape is not limited to the illustrated example, and may be a hood type by a mountain tunnel method or a shield method. The shape and material of the pit as the storage frame are not limited to the illustrated example.

Further, the present invention is applicable not only to the disposal space of the tunnel type but also to other types of disposal space. Further, the present invention can be applied not only to a buried disposal facility where a storage skeleton and an outer peripheral filler are provided in a disposal space but also to a buried disposal facility where a storage skeleton and an outer peripheral filler are not provided. In addition, the present invention can be applied not only to radioactive waste but also to disposal of other waste.

[0063]

[Effects of the Invention] (1) Run a transport vehicle in the disposal space and
In the first stage, the waste on the carrier is pushed into the stationary platform by pushing, and in the second and higher stages, the carrier of the carrier is lifted up, and the waste on the carrier is pushed in and transferred to the lower waste in the lower stage. Since the wastes can be stacked in a plurality of stages, the conventional stationary crane can be eliminated, and the disposal space can be effectively utilized. In particular, in a tunnel-type disposal facility, since there is no space for installing a stationary crane that occupies a large portion of the upper part of the disposal space, the storage efficiency of waste is significantly improved, and the economics of disposal of waste is greatly improved.

(2) Since the transporter of the waste body travels on the guide, the reliability of the remote operation is significantly improved as compared with the forklift system, and the waste body can be quickly and accurately positioned at the predetermined stationary position. The safety and workability are greatly improved.

(3) The transporting trolley places the waste on the carrier, lifts up the second and higher stages, and pushes the waste in with a pushing device, so that the waste is transferred. Compact and simple structure, high reliability as mechanical and operating system,
Be economical.

(4) By simply pushing in the wastes to be stacked on top by the wheels and the like on the lower surface of the wastes and the guide grooves and the like on the upper surface of the wastes, stationary gantry, and loading platform, the wastes can be easily and accurately stacked. be able to.

(5) Since the partition walls are of the shutter type, the partition walls can be installed unattended and easily in a short time inside a storage frame or the like in which a predetermined number of waste bodies have been fixed, and The inside of the storage frame can be reliably partitioned without any gaps, and the filler such as mortar does not leak, thus greatly improving workability.

(6) A partition wall is installed on the shutter-type partition wall, and a filling work of mortar or the like is performed in order to completely shut off a control area where waste is carried in and fixed and a work area on the opposite side. And the like can be performed safely, and the filling operation can be performed by bringing a mixer truck or the like close to the vehicle, and a safe and reliable operation can be performed.

[Brief description of the drawings]

FIG. 1 shows an example of a tunnel-type buried disposal facility to which the present invention is applied, wherein (a) is a cross-sectional view and (b) is a longitudinal cross-sectional view.

FIGS. 2A and 2B show a transport device and the like used in the present invention, wherein FIG. 2A is a front view and a side view of a waste transport vehicle, FIG. 2B is a side view of a stationary mount transport vehicle, and FIG. FIG. 4 is a perspective view, a side view, and a partially enlarged view showing a structure of a waste body and a bed.

3A and 3B show a partition wall of a concrete pit used in the present invention, wherein FIG. 3A is an overall perspective view, and FIG. 3B is a partially enlarged perspective view.

FIG. 4 is a flowchart showing an example of a waste disposal work according to the present invention.

FIG. 5 is a cross-sectional view showing an example of the burial disposal work of the waste according to the present invention in the order of steps.

FIG. 6 is a perspective view showing one example of a concrete pit construction method of the present invention.

FIG. 7 is a longitudinal sectional view showing one example of a work (1) for placing a waste body according to the present invention.

FIG. 8 is a longitudinal sectional view showing an example of a work (2) for placing a waste body according to the present invention.

FIG. 9 is a longitudinal sectional view showing one example of a work (3) for placing a waste body according to the present invention.

FIG. 10 is a cross-sectional view showing an example of a conventional waste disposal facility.

[Explanation of symbols]

 A: Waste 1: Tunnel 1a: Shotcrete 1b: Secondary lining 2: Concrete pit (containment frame) 2a: Bottom 2b: Side wall 2b-1: Precast pillar 2b-2: Precast wall 3 ... Peripheral filler (Bentonite mixed soil) 3a ... Bottom bentonite 3b ... Side bentonite 3c ... Top bentonite 4 ... Cement-based filler (mortar) 5 ... Backfill soil 6 ... Space for stationary crane 10 ... Shutter Partition wall (wife frame) 11: Mobile partition wall (shielding door) 12: Control area 13: Bottom connecting tunnel for waste disposal 14: Upper connecting tunnel for mortar filling work 15 ... Partition wall 16 ... Transshipment room 20 ... Traveling groove 21 ... Carrier for waste body 22 ... Stationary gantry (bottom spacer) 23 ... Stationary gantry carrier 24 ... Carrier for transporting waste bodies 25 ... Car for driving waste bodies 26 ... Waste body pushing device 27 ... Carriage body 28 ... Hydraulic jack 29 ... Carrier 30 ... Vehicle body 31 ... Hydraulic jack 32 ... Elevating platform 33 ... Direction support device 34... Vehicle body 35... Hydraulic jack 36... Elevating platform 37... Gripping device 40... Wheels (or ball bearings or the like) 41... Guide groove 42. ... Storage body 51 ... Door body 52 ... Guide groove 53 ... Storage groove 60 ... Backhoe 61 ... Grasping device 70 ... Spacer 80 ... Mortar supply pipe

Claims (4)

[Claims] 1. A waste disposal method for sequentially transporting wastes into a processing space and placing the wastes at predetermined positions in the disposal space, wherein the wastes are sequentially transported and a predetermined number of wastes are removed. A waste disposal method comprising a step of lowering a shutter-type partition wall on the front surface of the partition when the placement is completed, and filling a filler in a stationary space partitioned by the partition wall. 2. The waste disposal method according to claim 1, wherein the disposal space is a disposal tunnel excavated in rock. 3. The waste disposal method according to claim 1, wherein a storage body for storing the waste body is provided in the disposal space, and the waste body is stacked and fixed at a predetermined stationary position in the storage body. And a shutter-type partition wall is installed in a stored state above the storage body. 4. The waste disposal method according to claim 3, wherein a partition is installed above the section where the predetermined number of waste bodies have been placed and the filling material has been filled, and the waste body is placed in the next section. And a filling operation of a filling material.