JP5331993B2 - Air capsule transportation method of waste - Google Patents

Description

  The present invention relates to a method for transporting air capsules of waste used for geological disposal of high / medium level radioactive waste and other waste.

  An air capsule transport system that transports capsules as a transport container by air pressure is used for transporting people, equipment, ready-mixed concrete, excavated earth and sand, etc., in a vertical shaft of construction engineering works (for example, Patent Documents 1, 2, and 3). 4).

  Moreover, such an air capsule transport system is also used for geological disposal of radioactive waste (see, for example, Patent Documents 5, 6, and 7). The invention of Patent Document 5 uses air transport pipes used for the construction of vertical shafts, inclined shafts, underground tunnels, air transports the transport body that integrates the waste body and the buffer material in the ground facility, and is embedded in the disposal space To do.

  In the invention of Patent Document 6, the waste transported by the sea is stored in a water-stopping storage container at the ground facility of the port facility, and a buffer pack is disposed around the waste to form a waste pack. The body pack is transported as a capsule from the ground facility to the underground facility by an air conveyance pipeline, and the waste pack is placed in a disposal hole or a disposal tunnel as it is.

  The invention of Patent Document 7 includes a tilt shaft connected from the ground facility to the intermediate facility, a main tunnel extending from the intermediate facility, a plurality of disposal tunnels branched from the main tunnel, and a waste body mounted thereon so that the tunnel can be moved freely. The pneumatic carriage is reciprocated between the ground facility and the intermediate facility by the pressurized air supplied and exhausted into the inclined shaft, and the air is supplied by the pressurized air supplied and exhausted to the main and disposal tunnels. A pneumatic pump unit is provided for reciprocating the carriage between the intermediate facility and the disposal tunnel.

JP 2001-31243 A Japanese Patent Laid-Open No. 2001-31244 JP 2001-158532 A JP 2004-26480 A JP 2003-148097 A JP 2004-286451 A JP 2005-194078 A

  In the geological disposal of high-level radioactive waste, when the capsule containing radioactive waste is pneumatically transported from the underground to the deep underground, the capsule speed is adjusted by adjusting the pressure difference before and after the capsule by the control system. In the case of control, there is a problem that the control system becomes complicated and expensive, and an air capsule transport system that is more efficient, economical, and safer than the prior art is desired.

  The present invention relates to a method for transporting air capsules of waste, which is capable of transporting air capsules more efficiently, economically and more safely than before in an air capsule transport system applied to geological disposal of radioactive waste. It is to provide.

Claim 1 of the present invention is that the capsule of the transport container storing the waste is put on the ground inside the air transport pipe line arranged from the ground to the underground, and before and after the capsule in the air transport pipe line In a method for transporting waste capsules in which capsules are lowered due to the pressure difference and transported to the basement, the capsules are connected to the ground-side end of the air transport pipe and are erected substantially vertically above the air transport pipe The capsule firing line and a capsule moving device provided in the capsule firing line, the capsule moving device has a gripping device that moves up and down in the capsule firing line by a driving device, A capsule is placed inside the capsule launching pipeline, and an open / close valve installed at the top of the capsule launching pipeline is opened to introduce air into the space between the tube end of the capsule launching pipeline and the capsule. Capsules is lowered moved attached to the gripping device accelerates to a predetermined speed, after holding the lowering speed at a constant speed, closing the on-off valve, that is free fall to release the capsule from the capsule mobile device This is a characteristic air capsule transportation method of waste (see FIGS. 1 and 2).

  The present invention is applied to geological disposal of radioactive waste, etc., and air transportation pipelines are arranged in vertical shafts, inclined shafts, etc., and capsules containing waste are transported by air from the ground to underground facilities for disposal. Things are buried in underground facilities. The air conveyance pipe is linear or curved. A blower is provided in the upper or lower part of the air conveyance pipe line via an exhaust valve, and the capsule loaded with waste is lowered and conveyed by the pressure difference before and after the capsule, and the empty capsule is raised and conveyed.

  In the present invention, in the lowering transport, the blower is operated without power without operating the blower, and the capsule is transported by the free fall due to the pressure difference between the front and back of the capsule, and the blower is operated only when the empty capsule is returned from the viewpoint of reducing the cost. preferable. Also, in order to deal with situations such as damage to the air conveyance pipe line or capsule seal due to external force, the air flow is normally allowed to flow into the lower part of the air conveyance pipe line, and at the time of failure, etc. Is equipped with a check valve that prevents the outflow of air to the outside of the pipe. If the above trouble occurs when the capsule is powered down or the empty capsule is returned, the check valve closes and the air below the capsule is compressed. It is preferable to ensure safety by preventing the capsule from colliding with the lower part of the air conveyance pipe line due to the action (damper effect) and causing a disaster.

  When the capsule is lowered and transported without power when the blower is not operated, the capsule behavior is not controlled and is not stable. Therefore, in the present invention, a capsule firing device including a capsule firing line and a capsule moving device is provided above the air transportation line. Installed, sucked air into the space above the capsule, accelerated the capsule to a predetermined speed by the capsule moving device and kept it at a constant speed, and then released the capsule, so that the capsule put into the air conveyance pipe line The capsule can be freely dropped at a constant descending speed, and the behavior of the capsule that freely falls without control can be stabilized. Since the speed is controlled at the start of the descent of the capsule, and then it is allowed to fall freely, the air capsule can be transported more efficiently, economically, and safer than before.

  This is the case of a vertical launcher constant speed release type capsule launcher. For example, an operating member such as a piston rod of a cylinder type actuator is inserted into the capsule firing line, and the capsule is detachably held at the lower end of the operating member. The capsule is held by the gripping device, and the capsule is gripped by the gripping device, and the operating member is pushed down to accelerate to a predetermined speed and can be held at a constant speed. The capsule is released by releasing the gripping device. can do.

Claim 2 of the present invention is the air capsule transport method according to claim 1, a part of the capsule firing line are a movable part line parallel to the separated laterally, capsules firing line After the capsule is inserted into the partial pipe line that has been translated to the side of the capsule, the partial pipe line is translated and incorporated into the capsule firing line, and the capsule is ejected by the capsule moving line by the capsule moving device. This is a method for transporting waste air capsules, which is characterized by being moved to a launch position (see FIG. 3).

  This is a case of a capsule loading device of a partial launcher separation type in a capsule launcher of a vertical launcher constant speed release method. For example, a traveling carriage capable of traversing the capsule firing tube position and its side is provided, a partial pipeline is installed on it, a capsule is introduced into the partial pipeline arranged on the side, and the traveling carriage is caused to traverse the air. A partial pipe line is placed on the transport pipe line, and it is hermetically connected to the air feed pipe line. The capsule is moved to the firing position of the capsule firing pipe by the capsule moving device, and the capsule is moved downward and released as described above. To descend the air transport pipe at a constant speed. Capsule firing devices can be used to load and fire capsules.

Claim 3 of the present invention is the air capsule transport method according to claim 1, capsule launch tube states capsule launch conduit is installed raisably capable by rotation in the vertical plane, defeating substantially horizontally The capsule in a substantially horizontal state is moved close to the path, and the capsule is pulled to the firing position in the capsule firing line by the gripping device of the capsule moving device, the capsule firing line is raised, and the lower part is the upper part of the air conveying line It is a method for transporting waste air capsules, characterized in that it is connected to (see FIG. 5).

  This is a case of a launcher raising / lowering type capsule loading device in a vertical launcher constant speed release type capsule launching device. For example, the capsule firing line can be raised and lowered by a hinge device and a cylinder, and a traveling carriage capable of traversing the upper part of the air conveyance line and its side is provided, and the capsule is installed substantially horizontally on the carriage. The traveling carriage is made to traverse the capsule firing line in the state of being tilted, the capsule in the substantially horizontal state located in front of the capsule firing apparatus is gripped by the gripping device of the capsule moving apparatus, and the launch position in the capsule launching line Then, the capsule firing line is raised and the lower part is hermetically connected to the upper part of the air conveyance line, and the capsule is moved downward and released as described above to lower the inside of the air conveyance line at a constant speed. Again, the capsule firing device can be used to load and fire the capsule.

According to a fourth aspect of the present invention, in the air capsule transporting method according to the first aspect, the capsule firing line includes an upper straight line disposed substantially horizontally above the air carrying line, and the straight line. And the upper part of the air conveyance pipe line, and the capsule moving device has a gripping device that moves up and down in the straight pipe line and the curved pipe line by a driving device, It is a waste air capsule transporting method characterized in that it is attached to a gripping device and moved downward (see FIG. 2).

  In the case of a capsule launcher of a curved pipe launcher constant speed release method, for example, a capsule moving device is movably installed below a straight pipe line and a curved pipe line, and the capsule is arranged in the straight pipe line By attaching to the gripping device and moving it downward, it can be accelerated to a predetermined speed and maintained at a constant speed, and the capsule can be released by releasing the gripping device.

Claim 5 of the present invention is the air capsule transporting method according to claim 4 , wherein the capsule is inserted into the straight pipe line (see FIG. 6).

  This is the case of the capsule loading device in the capsule launcher of the curved pipe launcher constant speed release method. For example, the slide carriage is horizontally moved by a cylinder, the capsule is inserted into the straight pipeline, the capsule is moved downward and released as described above, and the inside of the air conveyance pipeline is lowered at a constant speed. Again, the capsule firing device can be used to load and fire the capsule.

A sixth aspect of the present invention is the air capsule transporting method according to any one of the first to fifth aspects, wherein the cross-sectional shape of the air carrying pipe is a substantially circular arc shape and a substantially straight line. This is a method for transporting waste air capsules (see FIGS. 8 and 9).

  This is applied in the case where the air conveyance pipeline is composed of a vertical pipeline, a curved pipeline, and a horizontal pipeline in order from the top. In the curved pipe line and the horizontal pipe line, there is an advantage that the running is stable because the capsule runs on the substantially flat bottom surface of the kamaboko type. A cross-section kamaboko-type air conveyance pipe can be easily manufactured by installing a bottom plate on a pipe having a circular cross section.

  Since the present invention is configured as described above, the following effects can be obtained.

(1) A capsule launcher consisting of a capsule launcher and a capsule moving device is installed on the upper part of the air conveyance pipeline, and the capsule is accelerated to a predetermined speed by the capsule moving device while sucking air into the space above the capsule. After the capsule is released at a constant speed, the capsule thrown into the air conveyance pipe can be dropped freely at a constant descending speed, and the behavior of the capsule that falls freely without control can be stabilized. Can do. Since the speed is controlled at the start of the descent of the capsule, and then it is allowed to fall freely, the air capsule can be transported more efficiently, economically, and safer than before.

(2) Capsule can be loaded and fired using a capsule launcher, which can reduce costs and improve transport efficiency.

(3) By making the cross section of the air conveyance pipe line into a kamaboko type consisting of a substantially arc and a substantially straight line, the capsule runs on a substantially flat bottom surface of the kamaboko type in a curved line and a horizontal line. There are advantages such as stable running.

  Hereinafter, the present invention will be described based on the illustrated embodiments. FIG. 1 and FIG. 2 are vertical sectional views showing an example of a capsule firing device used in the waste air capsule transporting method of the present invention.

  In FIG. 1, FIG. 2, etc., an air capsule conveyance system arrange | positions the air conveyance pipeline 1 from the ground to the underground, and the capsule 2 of the conveyance container which accommodated the waste is set inside the air conveyance pipeline 1 on the ground. The capsule 2 is lowered by the pressure difference between the front and rear of the capsule 2 in the air conveyance pipe 1 and conveyed to the underground. The empty capsule 2 from which the waste has been dropped underground is similarly raised by the pressure difference before and after the capsule and returned to the ground.

  In the air drive system, an exhaust device (blower and exhaust valve) is installed on the upper part of the air conveyance pipe 1 to suck out the air in the air conveyance pipe 1 to the outside, and the air conveyance pipe 1 An exhaust device (blower and exhaust valve) is installed in the lower part of the air-conditioner, and a press-fitting method using a positive pressure that pushes underground air into the air carrying pipe 1 or a combination method of both can be employed.

  It is preferable from the standpoint of cost reduction that the capsules are transported downward without power when the blower is transported and the blower is operated only when the empty capsule is returned. In the case of this air drive system, when transporting waste capsules, the exhaust valve of the blower installed in the upper part of the air conveying pipe 1 is closed, and the capsule 2 is allowed to fall freely due to the pressure difference before and after the capsule.

  In the case of this air drive system, it is preferable to install a closing device such as a check valve for preventing the air in the air carrying pipe from flowing out to the outside at the lower part of the air carrying pipe 1. That is, in order to cope with situations such as breakage of the air conveyance pipe line due to external force or damage to the capsule seal part, the pressure / capsule speed monitoring system in the air conveyance pipe line is always operated, and the closing device is always closed, The closure device is opened with power only when the capsule is powered down. Therefore, when the above trouble occurs when the capsule is not powered down or when the empty capsule is returned, the closure device closes, so the capsule collides with the lower part of the air conveyance pipe line due to the compression action (damper effect) of the air below the capsule. A disaster can be prevented and safety can be ensured.

  In the case of geological disposal of radioactive waste, air transportation pipelines are installed in access tunnels such as vertical shafts, inclined shafts, spiral tunnels, etc., and capsules containing waste are transported by air from ground facilities to underground disposal facilities. . In addition, a straight pipe type or a curved pipe type using a vertical pipe or an inclined pipe can be used as the air carrying pipe.

  In the air capsule transport system as described above, when the capsule is lowered and transported without driving the blower when transporting the waste capsule, the capsule behavior is uncontrolled, so in the present invention, the capsule behavior is stabilized. In the descending conveyance due to the pressure difference in the tube sandwiching the capsule, the capsule can be discharged at the set descending speed by the capsule firing device shown in FIGS. 1 and 2, for example.

  FIG. 1 is an example of a capsule launcher of a vertical launcher constant speed release system. This capsule launcher 10 has a straight tubular capsule launcher 11 at the upper part, which is an end portion on the ground side of an air carrying conduit 1. The capsule moving device 12 is provided in the upper part of the capsule firing pipe 11 connected vertically. The capsule firing line 11 is not limited to being vertical, and may be installed with an inclination.

  The capsule moving device 12 is, for example, a cylinder type actuator. The device main body 13 of the driving device is externally installed on the upper end portion of the capsule firing pipe 11, and the operation member 14 such as a piston rod that moves up and down by the driving device is fired into the capsule. A gripping device 15 is provided which is inserted into the pipe line 11 and detachably grips the capsule 2 at the lower end of the operating member 14. For example, the gripping device 15 is configured such that a protruding grip provided on the capsule 2 is sandwiched between opening and closing arms.

  As will be described in detail later, the capsule 2 has wheels and a seal member, and the capsule 2 containing waste is lowered and conveyed by the pressure difference between the front and rear of the capsule 2 and the empty capsule 2 is conveyed up and down. However, in the present invention, an opening / closing valve 16 is provided at the upper end of the capsule firing line 11, and the opening / closing valve 16 is opened / closed to adjust the pressure difference between the front and rear of the capsule 2.

  Using the capsule launcher 10 of the vertical launcher constant speed release type as described above, the capsule 2 is fired in the following procedure (see FIG. 1).

  (1) Inside the upper part of the capsule firing line 11, the capsule 2 containing waste is disposed. The arrangement of the capsule 2 can be performed by using the capsule moving device 12, as will be described in detail later. The capsule 2 is held in the firing position by the gripping device 15 of the capsule moving device 12.

  (2) The on-off valve 16 installed at the upper part of the capsule firing line 11 is opened and air is introduced into the space between the pipe end at the upper part of the capsule firing line 11 and the capsule 2, and the capsule 2 is moved by the capsule moving device 12. Move down and accelerate to a predetermined speed. The air can be accelerated by sucking air from the upper part of the capsule 2 and bringing it closer to the pressure difference at the time of convergence, and by depressing the capsule 2 with the capsule moving device 12. The capsule 2 is accelerated until the descending speed of the capsule 2 reaches, for example, 5 km / h.

  (3) Hold the descent speed of the capsule 2 at a constant speed for a predetermined time. For example, a constant speed of 5 km / h is maintained for about 0.2 seconds.

  (4) The on-off valve 16 is closed, the capsule 2 is released from the gripping device 15 of the capsule moving device 12 and is freely dropped, and the capsule 2 is lowered at a constant speed.

  FIG. 2 shows an example of a capsule launcher of the curved line launcher constant speed release system. The capsule launcher 20 is composed of a capsule firing line 21 and a capsule moving device 22 by a curved pipe.

  The capsule firing line 21 includes an upper straight line 21 a disposed horizontally above the air conveying line 1, and a curved line 21 b that connects the straight line 21 a and the upper part of the air conveying line 1. It is composed of The straight line 21a is not limited to being horizontal and may be installed at an inclination.

  The capsule moving device 22 has a gripping device 23 that moves up and down along the lower portions of the straight pipeline 21a and the curved pipeline 21b by a driving device, and attaches the capsule 2 to the gripping device 23 and moves it downward. For example, the gripping device 23 is configured to grip the main body of the capsule 2, and the gripping device 23 is attached to an actuator such as an endless chain drive device that can correspond to the curved portion.

  Also in this case, the opening / closing valve 24 is provided at the pipe end of the straight line 21a, and the opening / closing valve 24 is opened / closed to adjust the pressure difference before and after the capsule 2.

  The capsule 2 is fired by the following procedure using the capsule launcher 20 of the curved pipe launcher constant speed release method (see FIG. 2).

  (1) The capsule 2 containing the waste is disposed inside the straight end 21 a of the capsule firing line 21. The capsule 2 can be arranged using the cab cell moving device 22. The capsule 2 is held at the firing position by the gripping device 23 of the capsule moving device 22.

  (2) Opening the on-off valve 24 installed in the straight line 21a to introduce air into the space between the pipe end of the straight line 21a and the capsule 2 and move the capsule 2 horizontally and downward by the capsule moving device 22 And accelerate to a predetermined speed. The air can be accelerated by sucking air from the upper part of the capsule 2 and bringing it closer to the pressure difference at the time of convergence, and by depressing the capsule 2 with the capsule moving device 22. The capsule 2 is accelerated until the descending speed of the capsule 2 reaches, for example, 5 km / h.

  (3) Hold the descent speed of the capsule 2 at a constant speed for a predetermined time. For example, a constant speed of 5 km / h is maintained for about 0.2 seconds.

  (4) The on-off valve 24 is closed, the capsule 2 is released from the gripping device 23 of the capsule moving device 22 and is freely dropped, and the capsule 2 is lowered at a constant speed.

  Next, FIG. 3 shows an example of the launcher partial separation type capsule loading device 30 in the vertical launcher constant speed release type capsule launching device 10. As shown in FIG. 3, the lower part of the capsule firing pipe 11 is separated into a partial pipe 31 that can be translated in the lateral direction, and the partial pipe 31 arranged by being translated in the lateral direction of the capsule firing pipe 11. After the capsule 2 is inserted, the partial conduit 31 is translated and incorporated in the capsule firing conduit 11, and the capsule 2 is moved to the firing position in the capsule firing conduit 11 by the gripping device of the capsule moving device 12. .

  The capsule firing pipeline 11 and the partial pipeline 31 reinforce the tube with a ring or the like, and support the upper portion of the capsule firing pipeline 11 with a support frame 32. A travel rail 33 is arranged from the upper part of the air conveyance conduit 1 to the side, and the partial conduit 31 is installed on a travel carriage 34 that travels on the travel rail 33. The capsule 2 is thrown into the partial pipeline 31 arranged on the side from above, the traveling carriage 34 is traversed, the partial pipeline 31 is arranged on the air conveyance pipeline 1, and the upper and lower portions of the capsule launch tube are respectively provided. It connects to the path 11 and the air conveyance pipeline 1 in an airtight manner. The capsule 2 is moved to the upper part of the capsule firing pipe 11 by the capsule moving device 12, and the capsule 2 is moved downward and released by the procedure of FIG.

  FIG. 4 shows an example of the capsule loading / unloading device 40, which is a case where the air carrying conduit 1 is only a vertical portion. As shown in FIG. 4, the capsule unloading apparatus 40 is provided in the horizontal tunnel of the underground facility which a shaft reaches. Similar to the capsule loading device 30, the capsule loading / unloading device 40 uses the upper part of the capsule reaching pipeline 41 as a partial pipeline 42 and can be traversed by the traveling rail 43 and the traveling carriage 44.

  The partial pipe 42 is connected to the lower part of the air conveying pipe 1, and the capsule 2 descending in the air conveying pipe 1 is braked by the compressed air in the capsule reaching pipe 41 and then stopped. The capsule 2 is disposed in the passage 42, the partial conduit 42 is moved to the side, and the capsule 2 is taken out at the side position. The capsule 2 is conveyed to the disposal space by an appropriate conveying means, and the empty capsule 2 from which the waste has been taken out is returned. The empty capsule 2 is put into the partial pipeline 42, the partial pipeline 42 is connected to the lower part of the air conveyance pipeline 1, and the empty capsule 2 is returned to the ground by ascending conveyance.

  FIG. 5 is an example of a capsule loading device 50 of the launcher up / down method in the capsule launcher 10 of the vertical launcher constant speed release method. As shown in FIG. 5, the capsule firing pipeline 11 is installed so as to be able to be tilted by rotation in the vertical plane, and the capsule 2 in a substantially horizontal state is inserted into the capsule firing pipeline 11 in a state of being tilted substantially horizontally. At the same time, the capsule 2 is pulled into the firing position in the capsule firing line 11 by the gripping device 15 of the capsule moving device 12, the capsule firing line 11 is raised and the lower part is connected to the upper part of the air conveying line 1.

  The lower part of the capsule firing pipe 11 is installed on the side part of the upper part of the air conveying pipe 1 by the hinge device 51 to be rotatable, and the capsule firing pipe 11 can be turned up and down by a pair of upright cylinders 52. A travel rail 53 is arranged from the upper part of the air conveyance pipe 1 to the side, and the capsule 2 is installed on a travel carriage 54 that travels on the travel rail 53. The traveling carriage 54 is moved horizontally with respect to the capsule firing line 11 in a state of being tilted substantially horizontally, and the capsule 2 in the substantially horizontal state located in front of the capsule firing device 11 is gripped by the gripping device 15 of the capsule moving device 12. Then, it is pulled into the firing position in the capsule firing line 11. Next, the capsule firing line 11 is erected and the lower part is hermetically connected to the upper part of the air conveyance line 1, and the capsule 2 is moved downward by the procedure shown in FIG. Lower.

  FIG. 6 is an example of the capsule loading device 60 in the capsule launcher 20 of the curved pipe launcher constant speed release method. The capsule loading device 60 is installed so as to be continuous with the straight line 21a, and horizontally moves the slide carriage 62 with a pair of cylinders 61, and inserts the capsule 2 into the straight line 21a. A pipe lid 21c is provided at the pipe end of the straight pipe 21a. The capsule 2 is moved downward by the procedure shown in FIG. 2 and released, so that the inside of the air conveying pipe 1 is lowered at a constant speed. The capsule loading device is not limited to the illustrated example, and other types of capsule loading devices can also be used.

  FIG. 7 shows a specific example of the structure of the capsule 2. For example, a seal gap of about 14 mm is secured between the air conveyance pipe line 1 and the capsule 2 to prevent the seal part from being damaged.

  FIG. 7A shows a type in which a seal plate is directly installed on the capsule body. The seal plate 3 is provided on the front and rear surfaces of the capsule body, and the main traveling wheel 4a, the auxiliary traveling wheel 4b, and the guide wheel are provided on the seal plate 3. Install 4c. In this type, the number of parts is small, the reliability is high, and the capsule structure is simple and inexpensive. On the other hand, when the pipe curvature of the curved pipe line of the air conveyance pipe line 1 is small, the seal plate interferes with the inner wall of the pipe line, so that it is necessary to increase the curvature. Further, since the seal gap changes due to the bending of the wheel, a hard urethane or steel wheel is preferable.

  FIG. 7B is a type in which a seal plate is installed on the bogie, and a bogie 5 that can tilt with respect to the capsule body is connected to the front and rear surfaces of the capsule body, and the seal plate 3 is provided on the bogie 5. . In this type, even if the pipe has a small curvature, the seal plate and the pipe inner wall do not interfere with each other. On the other hand, since the seal gap changes due to the deflection of the wheels, wheels made of hard urethane or steel are preferable. Further, when traveling along a vertical pipe, an eccentricity adjustment mechanism between the center of gravity of the capsule and the pressure receiving center of the seal plate is required.

  FIG. 7C shows a type in which the capsule body and the seal carriage are connected by a draw bar and pulled, and the seal carriage 6 is connected to one side of the capsule body via the draw bar. In this type, even if the pipe has a small curvature, the seal plate and the pipe inner wall do not interfere with each other. Further, although there is a change in the deflection of the wheel due to a change in the weight of the capsule body in the forward and return paths, there is no effect on the seal gap of the seal carriage 6, and rubber tires can be employed. Further, an eccentricity adjustment mechanism between the center of gravity of the capsule and the center of pressure received by the seal plate is not required when traveling on a vertical pipeline.

  FIGS. 8 and 9 are examples in which the cross-sectional shape of the air conveying pipe 1 is a so-called kamaboko type formed of a substantially arc and a substantially straight line. This is applied when the air conveying pipe 1 is composed of a vertical pipe, a curved pipe, and a horizontal pipe in order from the top. In the curved pipe line and the horizontal pipe line, there is an advantage that the running is stable because the capsule 2 runs on the substantially flat bottom surface of the kamaboko type.

  The cross-section kamaboko type air conveyance pipe line 1 can be easily manufactured by installing the bottom face plate 1a on a pipe line having a circular cross section. In the capsule 2, a seal carriage 6 is connected to the front and rear portions of the capsule body, and a kamaboko type seal plate 3 is provided on each seal carriage 6 (see FIG. 8). Alternatively, the bogie bogie 5 is connected to the front / rear portion of the capsule body, the seal bogie 6 is connected to the bogie bogie 5 on one side, and the kamaboko type seal plate 3 is provided on the seal bogie 6 (see FIG. 9). A large number of main traveling wheels 4a roll on the bottom plate 1a, and stable traveling is obtained. Further, even in a curved pipeline, the sealing plate does not interfere with the inner wall of the pipeline, and a good sealing performance can be obtained.

  FIG. 10 shows an example of a basic configuration of an artificial barrier of a disposal hole vertical placement method in geological disposal of high-level radioactive waste. A so-called overpack 70 in which a stainless steel canister storing radioactive waste as a vitrified body is stored is surrounded by a buffer material block 72 via a gap filler 71, and a shielding poor blending block 73 is arranged at the top. The outer periphery is filled with the gap filler 71 so that radioactive waste is fixedly buried.

  In such geological disposal of radioactive waste, overpacks and cushioning material blocks are stored in capsules, and are transported by air to underground facilities, and the overpacks and cushioning material blocks are placed in disposal holes and disposal tunnels, respectively. Also, in the ground facility, the overpack and cushioning material are stored in a storage container to form a waste pack, this waste pack is transported to the underground facility, and the waste pack transported to the underground facility is directly disposed of in the disposal hole or disposal. It can also be buried in a tunnel. For example, air is transported pneumatically to a destination in an underground facility by free-falling at a constant speed in an air conveyance pipe having a diameter of about 3.5 m and a length of about 1 km.

  FIGS. 11 and 12 show a case where the air capsule transport system is used even when the radioactive waste transported by sea is transported to the ground facility of the geological disposal site. As shown in FIG. 11, a stainless steel canister that has been transported by sea to a port facility is housed in a cask 80 as a transport container, and this cask 80 is mounted on a transport carriage 81 and transported by air capsule to a ground facility. The transport carriage 81 is allowed to travel in the air transport conduit 84 by the travel wheels 82 and the travel rail 83, and is transported by the air by the seal plates 85 installed on the front and rear sides or one side of the transport carriage 81.

  As shown in FIG. 12, an air conveyance conduit 84 is formed from the harbor facility to the ground facility by a shield tunnel, the cask 80 is loaded onto the conveyance carriage 81 at the port facility, the cask 80 is unloaded at the ground facility, and the overpack group is assembled. Transport to position.

  Needless to say, the present invention is not limited to the illustrated examples.

It is an example of the capsule launcher of the vertical launcher constant speed release system used by this invention, and is a vertical sectional view which shows a capsule firing process in order. It is an example of a curved line launcher constant speed release type capsule launcher used in the present invention, and is a vertical cross-sectional view sequentially showing a capsule firing process. It is a perspective view which shows an example of the capsule loading apparatus of the launcher partial separation system in the capsule launcher of the vertical launcher constant speed release system used by this invention, (a) is at the time of setting, (b) is at the time of capsule insertion. It is a perspective view which shows an example of the capsule unloading apparatus corresponding to the capsule loading apparatus of FIG. 3, (a) is at the time of capsule arrival, (b) is at the time of capsule extraction. It is a perspective view which shows an example of the capsule loading apparatus of the launcher raising / lowering system in the capsule launcher of the vertical launcher constant speed release system used by this invention, (a) is at the time of capsule insertion, (b) is at the time of raising. It is an example of the capsule loading apparatus in the capsule launcher of the curved pipe line launcher constant speed release system used by this invention, (a) is a perspective view, (b) is a vertical sectional view. It is a perspective view which shows the specific example of the structure of the capsule used by this invention. It is an example of the kamaboko type air conveyance pipe line and its capsule used by this invention, (a) is a perspective view, (b) is a vertical sectional view. It is a perspective view which shows an example of the kamaboko type air conveyance pipe line and its capsule used by this invention, (a) is a vertical pipe part, (b) is a curved pipe line part. It is a vertical sectional view showing an example of a basic configuration of an artificial barrier of a disposal hole vertical placement method in geological disposal of high-level radioactive waste. It is a perspective view which shows the example of the air capsule conveyance system in the case of conveying the radioactive waste conveyed by the sea to the ground facility of a geological disposal site. It is an example of the air capsule conveyance system in the case of transporting the radioactive waste transported by the sea to the ground facility of the geological disposal site, (a) is a cross-sectional view of the air conveyance pipeline part, (b) is the cask loading part A transverse cross-sectional view, (c) is a vertical cross-sectional view of the air carrying conduit section, and (d) is a vertical cross-sectional view of the whole.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Air conveyance pipeline 1a ... Bottom plate 2 ... Capsule 3 ... Sealing plate 4 ... Wheel 4a ... Main traveling wheel 4b ... Auxiliary traveling wheel 4c ... Guide wheel 5 ... Bogie cart 6 ... Sealing cart 10 ... Capsule firing device 11 ... Capsule firing conduit 12 ... Capsule moving device 13 ... Device body 14 ... Operating member 15 ... Grip device 16 ... Open / close valve 20 ... Capsule firing device 21 ... Capsule firing conduit 21a ... Straight conduit 21b ... Curve tube Road 21c: Pipe cover 22 ... Capsule moving device 23 ... Grasping device 24 ... Open / close valve 30 ... Capsule loading device 31 ... Partial conduit 32 ... Supporting frame 33 ... Traveling rail 34 ... Traveling cart 40 ... Capsule unloading device 41 ... Capsule Reaching pipe 42 ... Partial pipe 43 ... Traveling rail 44 ... Traveling carriage 50 ... Capsule loading device 51 ... Hinge device 52 ... Standing up Cylinder 53 ... Traveling rail 54 ... Traveling cart 60 ... Capsule loading device 61 ... Cylinder 62 ... Slide cart 70 ... Overpack 71 ... Gap filling material 72 ... Buffer material block 73 ... Poor blending block 80 ... Cask 81 ... Conveying cart 82: Traveling wheels 83 ... Traveling rails 84 ... Air conveyance pipelines 85 ... Seal plates

Claims (6)

The capsule of the transport container containing the waste is put on the ground into the inside of the air conveyance pipe arranged from the ground to the basement, and the capsule is lowered by the pressure difference before and after the capsule in the air conveyance pipe. In the air capsule transport method for waste transported underground,
A capsule firing line connected to the end of the air conveying line on the ground side and standing substantially vertically above the air conveying line, and a capsule moving device provided in the capsule firing line are used. The capsule moving device has a gripping device that moves up and down in the capsule firing line by a driving device, and the capsule is disposed inside the capsule firing line, and is installed at the upper part of the capsule firing line. Open the open / close valve and introduce the air into the space between the tube end of the capsule firing line and the capsule , attach the capsule to the gripping device and move it downward to accelerate it to a predetermined speed. A method for transporting waste air capsules, characterized in that after the speed is maintained, the on-off valve is closed, the capsule is released from the capsule moving device, and is freely dropped. 2. The air capsule transporting method according to claim 1 , wherein a part of the capsule firing pipe is separated and is a partial pipe that can be translated in the lateral direction, and is translated to the side of the capsule firing pipe. After the capsule is inserted into the arranged partial pipeline, the partial pipeline is translated and incorporated into the capsule firing pipeline, and the capsule is moved to the firing position in the capsule firing pipeline by the gripping device of the capsule moving device. A method for transporting waste air capsules. 2. The air capsule transporting method according to claim 1 , wherein the capsule launching conduit is installed so as to be able to be tilted by rotation in a vertical plane, and is in a substantially horizontal state with respect to the capsule launching conduit in a state of being tilted substantially horizontally. The capsule is moved close to the capsule, and the capsule is pulled to the firing position in the capsule firing line by the gripping device of the capsule moving device, the capsule firing line is raised and the lower part is connected to the upper part of the air conveying line. Air capsule transportation method for waste.   The air capsule transporting method according to claim 1, wherein the capsule firing line includes an upper straight line disposed substantially horizontally above the air carrying line, and the straight line and the upper part of the air carrying line. The capsule moving device has a gripping device that moves up and down in the straight pipeline and the curved pipeline by a driving device, and the capsule is attached to the gripping device and moved downward. A method for transporting waste air capsules. 5. The air capsule transporting method according to claim 4 , wherein the capsule is inserted into a straight pipe line. The air capsule transport method according to any one of claims 1 to 5, the waste, wherein the cross-sectional shape of the air carrying conduit is semi-cylindrical consists substantially circular arc substantially straight Air capsule transportation method.

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