JP2013221312A - Road surface treatment method and road surface treatment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an epoch-making road surface treatment method and road surface treatment device capable of exerting an unprecedented function effect.SOLUTION: A road surface treatment method is for removing radioactive substances 50 deposited on a road surface 1. In the method, slurry 5 as a mixture of liquid 3 and abrasive grains 4 is sprayed on the road surface 1 together with compressed-air, to remove the radioactive substances 50.

Description

  The present invention relates to a road surface processing method and a road surface processing apparatus for removing radioactive substances adhering to a road surface.

  Conventionally, as a device for removing dirt adhering to a road surface, a road surface cleaning device (hereinafter referred to as a conventional example) as disclosed in JP-A-9-268533 has been proposed.

  This conventional example has a configuration including a water injection unit that injects water at a high pressure. Water is injected from the water injection unit at a high pressure so as to collide with a road surface to remove dirt adhering to the road surface.

JP-A-9-268533

  However, in the conventional example, it is not possible to satisfactorily remove the dirt attached to the road surface by simply jetting water at a high pressure, and therefore, friction treatment is performed with a rotating brush as a pretreatment before jetting water from the water jet section. However, since the rotating brush structure is separately required, the apparatus itself becomes large. Although it may be possible to further increase the pressure for injecting water without using this rotating brush, a large pressure device is eventually required.

  Moreover, the conventional example has a structure in which the water after being sprayed on the road surface is discarded by flowing it into a drainage groove (U-shaped groove), which has environmental problems, and furthermore, removes radioactive substances adhering to the road surface. It cannot be used at all.

  The present invention solves the above-described problems, and provides an innovative road surface processing method and road surface processing apparatus that exhibit unprecedented effects.

  The gist of the present invention will be described with reference to the accompanying drawings.

  A road surface treatment method for removing a radioactive substance 50 adhering to a road surface 1, wherein a slurry 5, which is a mixture of a liquid 3 and abrasive grains 4, is jetted onto the road surface 1 together with compressed air to remove the radioactive substance 50. The present invention relates to a road surface processing method characterized by the above.

  The road surface treatment apparatus removes radioactive material 50 adhering to the road surface 1, and a slurry 5, which is a mixture of liquid 3 and abrasive grains 4, is applied to the moving body 22 moving on the road surface 1. The present invention relates to a road surface processing apparatus characterized by including a slurry injection unit 6 for injection together with compressed air.

  The road surface processing apparatus according to claim 2, further comprising a processing cover body 7 that forms a processing space that is surrounded by the vicinity of the road surface 1, and includes the slurry injection unit 6. And a slurry recovery unit 8 for recovering the slurry 5 injected by the slurry injection unit 6 is provided.

  4. The road surface processing apparatus according to claim 3, wherein the slurry collecting unit 8 is connected to the processing cover body 7 with a slurry revolving container 10 having an intake unit 9, and is sucked by the intake unit 9 to collect the slurry. The slurry 5 in the processing cover body 7 is sucked and collected by setting the inside of the container 10 to a negative pressure, and the slurry 5 introduced into the slurry circulation container 10 is further contained in the slurry circulation container 10. In addition, the present invention relates to a road surface processing apparatus, characterized in that a separation portion 11 is provided which is separated into the liquid 3 and the abrasive grains 4 and air by flowing in a spiral shape.

  Further, in the road surface processing apparatus according to claim 4, the separation unit 11 includes a first cylindrical body 12 provided in the inner space S <b> 1 of the slurry circulating container 10, and the inner space S <b> 2 of the first cylindrical body 12 includes a first cylinder 12. Two cylindrical bodies 13 are provided, the inner space S1 and the inner space S2 are provided in a vented state, and the inner space S2 and the inner space S3 of the second cylindrical body 13 are provided in a vented state, Further, the air in the inner space S3 is provided so as to be sucked in by the air intake portion 9, and when the air intake portion 9 is operated, the air is passed through the slurry recovery port portion 10a provided in the slurry circulating container 10. The slurry 5 introduced into the inner space S1 flows through the inner space S1 in a spiral shape and is separated into the liquid 3 and the abrasive grains 4 and air, and then further from the inner space S1 to the inner space S2. The slurry 5 introduced to the flow passes through the inner space S2 in a spiral shape. Then, the liquid 3 and the abrasive grains 4 are separated into air and the air is introduced into the air intake 9 through the inner space S3 and exhausted, and the liquid 3 and the abrasive grains 4 are collected in the slurry. The present invention relates to a road surface treatment device that is configured to sink to the container 10.

  Further, in the road surface processing apparatus according to claim 5, the slurry recovery unit 8 causes the liquid 3 and the abrasive grains 4 to flow in a spiral shape from the liquid 3 and the abrasive grains 4 that have settled, and The present invention relates to a road surface treatment apparatus characterized in that a radioactive substance separation unit 14 for separating the radioactive substance 50 and the mixture of the removed substance to which the radioactive substance 50 is attached and the liquid is provided.

  7. The road surface processing apparatus according to claim 3, wherein the processing cover body 7 has an opening that allows the slurry 5 injected from the slurry injection unit 6 to collide with the road surface 1. And a flexible seal member 15 in contact with the road surface 1 is provided in the opening.

  Further, in the road surface processing apparatus according to any one of claims 2 to 7, the slurry injection unit 6 includes a plurality of slurry injection nozzles 6a arranged in parallel in the processing cover body 7, and the slurry injection nozzles 6a are arranged in parallel. A road surface characterized in that it is swung in a direction perpendicular to the traveling direction of the moving body 22 and the slurry 5 is jetted in a plane shape in a direction perpendicular to the traveling direction of the moving body 22. This relates to a processing apparatus.

  Further, in the road surface processing apparatus according to any one of claims 2 to 8, a compressed air injection unit 25 for injecting compressed air toward the road surface 1 is provided behind the slurry injection unit 6, and the compressed air The present invention relates to a road surface processing apparatus configured to remove the slurry 5 attached to the road surface 1 by the injection from the slurry injection unit 6 by the compressed air injected from the injection unit 25. .

  Since the present invention is configured as described above, unlike the above-described conventional example, an innovative road surface processing method that exhibits unprecedented effects such as reliable and favorable removal of radioactive substances attached to the road surface, and the like It becomes a road surface processing device.

It is explanatory drawing of the road surface processing apparatus which concerns on a present Example. It is explanatory drawing of the road surface processing apparatus which concerns on a present Example. It is a schematic explanatory drawing of the road surface processing apparatus which concerns on a present Example. It is operation | movement explanatory drawing of the principal part which concerns on a present Example. It is operation | movement explanatory drawing of the principal part which concerns on a present Example. It is operation | movement explanatory drawing of the principal part which concerns on a present Example. It is operation | movement explanatory drawing of the principal part which concerns on a present Example. It is operation | movement explanatory drawing of the principal part which concerns on a present Example. It is a graph which shows the test result which confirms the separation capability in the radioactive substance separation part 14 of a present Example. It is a graph which shows the test result which carried out the road surface process in a present Example.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  The slurry 5 which is a mixture of the liquid 3 and the abrasive grains 4 is sprayed onto the road surface 1 to remove the radioactive substance 50 attached to the surface of the road surface 1. At this time, the abrasive grains 4 constituting the slurry 5 are carried by the liquid 3 and collide with the road surface 1, and in addition to the collision of the liquid 3, the radioactive substance 50 attached to the road surface 1 by the collision of the abrasive grains 4 is removed.

  When the present inventors perform wet blasting for injecting a slurry 5 that is a mixture of liquid 3 and abrasive grains 4 onto the road surface 1 to which the radioactive material 50 is actually attached, the radioactive material 50 attached to the road surface 1 is good. Make sure that it is removed.

  Therefore, the radioactive substance 50 adhering to the road surface 1 is reliably and satisfactorily removed.

  A specific embodiment of the present invention will be described with reference to the drawings.

  The present embodiment is a road surface processing method for removing the radioactive substance 50 adhering to the road surface 1 and is performed by using a road surface processing device M described later, which is shown in FIGS. Are mounted together with other structures such as a compressor 17, a generator 18, a replenishment liquid storage container 19, a recovered material storage container 20 and a control panel 21 on the loading platform of the transport vehicle 16 (truck). Is used.

  The road surface 1 to be treated in the present embodiment refers to a road surface such as a road, a parking lot, a sidewalk, etc., which is paved mainly with asphalt, concrete, or interlocking (concrete block). Refers to cesium, but there are a wide variety of objects as long as they exhibit the characteristics of this embodiment.

  The road surface processing apparatus M includes a moving body 22 that moves on the road surface 1 and a slurry injection unit 6 that injects slurry 5 that is a mixture of liquid 3 and abrasive grains 4 onto the road surface 1 together with compressed air. .

  Specifically, as shown in FIG. 1, the moving body 22 is provided with wheels 22b below the frame-like base 22a, and is provided so as to be able to run freely by a drive source (motor) (not shown). (Mobile vehicle). The moving body 22 is not limited to the self-propelled type, and may be a manual type.

  Further, a gripping body 22c is provided at a rear position of the base body 22a, and an operation portion 22d for operating each operation portion of the apparatus M is provided on the gripping body 22c.

  Further, a processing cover body 7 is provided at a rear position of the base body 22a via an elevating device 23.

  The processing cover body 7 forms a processing space surrounded by the vicinity of the road surface 1, and is provided so as to be able to contact with and separate from the road surface 1 by the operation of the lifting device 23.

  A wheel 24 is provided at the lower end of the processing cover body 7, and when the processing cover body 7 is lowered by the lifting device 23, the wheel 24 is grounded.

  Further, the processing cover body 7 is provided with a rectangular opening 7a (lower opening) that allows the slurry 5 injected from the slurry injection unit 6 to collide with the road surface 1, and the opening 7a is provided with the opening 7a. A flexible seal member 15 that comes into contact with the road surface 1 is detachably provided.

  The flexible seal member 15 is a U-shaped rubber member, and is suspended from the front edge portion and the left and right edge portions of the opening 7a. When the processing cover body 7 is lowered by the lifting device 23, A lower end part contacts the road surface 1.

  Accordingly, the flexible seal member 15 mixes slurry 5 (liquid 3, abrasive grains 4, radioactive substance 50, dirt on the road surface 1 and the like) from the front edge and the left and right edges of the opening 7a of the processing cover body 7. It is possible to prevent the slurry 5) from leaking as much as possible, and the flexible sealing member 15 can be replaced when worn or damaged.

  Further, the processing cover body 7 is provided with a compressed air injection section 25 that injects compressed air from the outside of the processing cover body 7 toward the rear edge of the opening 7a.

  As shown in FIGS. 4 and 5, the compressed air injection unit 25 has a plurality of (four) air injection nozzles 25 a arranged in parallel behind the slurry injection unit 6 at the rear rear position of the processing cover body 7. A compressed air supply pipe 26 extending from the compressor 17 is connected to each air injection nozzle 25a, and compressed air is injected from each air injection nozzle 25a. One air injection nozzle 25a may be provided.

  Further, each air injection nozzle 25a is provided toward the rear edge of the opening 7a of the processing cover body 7 so that the tip of the nozzle is downward and is inclined at a predetermined angle in the traveling direction.

  Further, as shown in FIG. 5, each air injection nozzle 25a is provided so as to be swingable in a direction (left-right direction) perpendicular to the traveling direction of the moving body 22 via a swing mechanism 25b. Air is jetted in a planar shape in a direction orthogonal to the traveling direction of the moving body 22.

  Accordingly, the compressed air is injected from the compressed air injection unit 25 to remove (blow off) the slurry 5 adhered to the road surface 1 after being injected from the slurry injection unit 6, and the slurry 5 by the slurry recovery unit 8 described later is removed. The seal function can prevent the slurry 5 from leaking as much as possible from the rear edge of the opening 7a by injecting the compressed air into a plane with a horizontal width. Will also demonstrate.

  The processing cover body 7 is provided with a slurry injection unit 6 and a slurry collection unit 8 that collects the slurry 5 injected by the slurry injection unit 6.

  As shown in FIGS. 4 and 6, the slurry injection unit 6 includes a plurality of (two) slurry injection nozzles 6 a arranged in the processing cover body 7, and each of the slurry injection nozzles 6 a will be described later. A slurry supply pipe 28 extending from the slurry reservoir 27 and a compressed air supply pipe 26 extending from the compressor 17 described above are connected, and the slurry 5 is injected together with the compressed air from each of the slurry injection nozzles 6a. The The number of the slurry injection units 6a may be one or three or more.

  Each of the slurry spray nozzles 6a is provided in a state in which the nozzle tip is downward and is inclined at a predetermined angle in the traveling direction.

  Therefore, the slurry 5 does not collide with the road surface 1 but in a state inclined at a predetermined angle, and after this collision, the slurry suction portion of the slurry collection unit 8 described later is applied to the tip of the slurry 5 that bounces the road surface 1. An opening of the tube 8a is provided.

  Each slurry injection nozzle 6a is provided so as to be swingable in a direction (left-right direction) orthogonal to the traveling direction of the moving body 22 via a swing mechanism 6b as shown in FIG. 5 is in a state of being jetted in a planar shape in a direction orthogonal to the traveling direction of the moving body 22.

  Therefore, the slurry 5 can collide with the road surface 1 evenly with a lateral width.

  In this embodiment, the liquid 3 constituting the slurry 5 is water, but it may be a chemical mixed water or chemical suitable for decontamination, and the abrasive grains 4 constituting the slurry 5 have an average particle diameter of 250 μm. Although it is alumina, its material and size can be appropriately adopted as long as they exhibit the characteristics of this embodiment.

  As shown in FIGS. 3, 4, 7, and 8, the slurry collection unit 8 is connected to the processing cover body 7 via the slurry suction pipe 8 a and has a slurry revolving container 10 having an intake unit 9. Thus, the slurry 5 in the processing cover body 7 is sucked and collected by making the inside of the slurry recycle body 10 into a negative pressure.

  The slurry turning container 10 includes an inverted conical hollow lower body 10A provided on the base 22a and a hemispherical hollow upper body 10B pivotably attached to the upper portion of the hollow lower body 10A.

  The hollow lower body 10A constitutes a slurry reservoir 27 for storing the slurry 5, and a slurry recovery port 10a to which the slurry suction pipe 8a is connected, and a slurry supply pipe 28 provided below the slurry recovery port 10a. A first slurry outlet port portion 10b to be connected and a second slurry outlet port portion 10c to which a slurry transport pipe 29 described later is connected are provided.

  Further, the tip of the slurry recovery port portion 10a is set in a direction along the curved inner surface of the slurry rotating container 10, and the slurry 5 is configured to be introduced along the curved inner surface (see FIG. 8).

  This constitutes a separation unit 11 to be described later, and is a configuration for generating a spiral flow in the slurry 5 in the slurry rotating container 10.

  The slurry 5 led out from the first slurry lead-out port 10 b is supplied to the slurry jet nozzle 6 a of the slurry jet unit 6 through the slurry supply pipe 28 and the pump device 30.

  Therefore, the slurry 5 is used in a circulating manner in the apparatus M.

  The hollow upper body 10 </ b> B is provided with an intake portion 9 at an upper portion thereof, and the air sucked into the slurry circulating body 10 is exhausted from the exhaust cylinder 9 a through the intake portion 9.

  In addition, the slurry container 10 is provided with a separation unit 11 that causes the slurry 5 introduced into the slurry container 10 to spirally flow and separate into the liquid 3, abrasive grains 4, and air.

  Specifically, in the separation portion 11, a first cylinder 12 having a tapered portion 12a at the lower portion is suspended in the inner space S1 of the slurry container 10 (hollow upper body 10B). A second cylinder 13 is suspended in the inner space S2, and the inner space S1 and the inner space S2 are provided in a vented state via a vent 12b provided in the upper portion of the first cylinder 12, and the inner space S2 and the inner space S3 of the second cylinder 13 are provided in a vented state through the lower opening of the second cylinder 13, and the air in the inner space S3 is provided by the intake part 9. It has been.

  Further, the lower end opening of the tapered portion 12a of the first cylinder 12 is immersed in the slurry 5 of the slurry reservoir 27, and the inner space S1 and the inner space S2 are in a vented state only at the vent 12b.

  Therefore, when the intake portion 9 is actuated, the slurry 5 introduced into the inner space S1 toward the curved inner surface through the slurry recovery port portion 10a provided in the slurry circulating container 10 flows in the inner space S1 in a spiral shape. Ascending and passing through the liquid 3 and the abrasive grains 4 and the air (see the one-dot chain line in FIGS. 7 and 8), the slurry 5 is further introduced from the inner space S1 into the inner space S2 through the vent 12b. Passes through the inner space S2 in a spiral shape, and is centrifuged into the liquid 3 and the abrasive grains 4 and air (see the two-dot chain line in FIGS. 7 and 8). It passes through the inside of the spiral flow, enters the inner space S3, is introduced into the intake portion 9, and is exhausted from the exhaust cylinder 9a of the intake portion 9.

  Further, the liquid 3 and the abrasive grains 4 (slurry 5) from which the air has been separated settle down in the slurry reservoir 27.

  Further, the slurry recovery unit 8 causes the liquid 3 and the abrasive grains 4 to flow spirally from the settled liquid 3 and the abrasive grains 4 (slurry 5 after being separated from the air by the separation section 11), and the radioactive substance 50 And a radioactive substance separation unit 14 for separating (classifying) a mixture (radioactive substance mixed solution) of the removed substance adhering to the radioactive substance 50 and the liquid 3 (water).

  That is, the slurry 5 collected by the slurry collecting unit 8 contains not only the radioactive substance 50 alone, but also the removed substance (for example, clay and moss) removed from the road surface 1 and attached with the radioactive substance 50. The radioactive substance separation unit 14 separates the radioactive substance mixture from the slurry 5.

  The radioactive substance separation unit 14 is constituted by a processing container 31 connected to a slurry transport pipe 29 extending from the second slurry outlet port 10c. Reference numeral 33 denotes a pump device.

  The processing container 31 is a vertically long cylindrical body, and the slurry 5 introduced from the slurry introduction part 31a provided at the upper side position of the processing container 31 passes through while generating a spiral flow from above to below. A first derivation for deriving a radioactive material 50 having a light mass produced by a centrifugal separation action at the upper end of the processing container 31 and a mixture of the removed material and the liquid adhering the radioactive material 50 to the mixture; A part 31b is provided, and on the other hand, a second lead-out part 31c for leading out the slurry 5 containing the abrasive grains 4 having a heavy mass is provided at the lower end part.

  The radioactive substance mixed liquid derived from the first deriving unit 31b is sent to the recovered material storage container 20 through the recovered material transport pipe 29a, while the slurry 5 derived from the second deriving unit 31c is supplied to the slurry return pipe. It is sent to the slurry reservoir 27 via 29b.

  The slurry transport pipe 29 is provided with a slurry return pipe 29 c that branches between the pump device 33 and the processing container 31 and sends the slurry 5 to the slurry reservoir 27.

  The slurry return pipe 29c agitates the slurry 5 in the slurry reservoir 27 by returning the slurry 5 to the slurry reservoir 27, so that the slurry concentration becomes uniform.

  Moreover, in the collection container 20, the radioactive substance 50 and the removed substance to which the radioactive substance 50 adheres are separated from the liquid (water) by precipitation, and the precipitated supernatant liquid (water) is supplied with liquid. It is sent to the slurry reservoir 27 through the pipe 34 and the pump device 35 and reused. The radioactive substance 50 accumulated in the lower part of the collected substance storage container 20 and the removed substance adhering to the radioactive substance 50 are transported to a radioactive substance treatment facility and appropriately processed.

  Further, the slurry supply pipe 28 has a slurry return pipe 28a branched at a position downstream of the pump device 30, and a slurry concentration meter 36 is provided at a midway position of the slurry return pipe 28a.

  Further, the liquid in the replenishing liquid storage container 19 described above is sent to the slurry reservoir 27 via the liquid replenishing pipe 37 and the pump device 38.

  Reference numeral 39 denotes a drain valve.

  A road surface treatment method (decontamination method) for removing the radioactive substance 50 adhering to the road surface 1 using the road surface treatment apparatus M according to this embodiment having the above-described configuration will be described.

  First, the transport vehicle 16 moves to a place to be processed, and the road surface processing device M is lowered from the loading platform.

  Subsequently, when the slurry 5, which is a mixture of the liquid 3 and the abrasive grains 4, is sprayed from the slurry spraying unit 6 onto the road surface 1 while moving the road surface processing apparatus M, the abrasive grains 4 constituting the slurry 5 are carried by the liquid 3. In addition to the collision of the liquid 3 in addition to the collision of the liquid 3, the radioactive substance 50 adhering to the road surface 1 due to the collision of the abrasive grains 4 and the removed substance adhering to the radioactive substance 50 are removed.

  At this time, in the compressed air injection section 25, the compressed air is injected from the air injection nozzle 25a to remove the slurry 5 adhering to the road surface 1, and the slurry 5 leaks from the rear edge of the opening 7a of the processing cover body 7. Is prevented.

  Moreover, the slurry 5 (slurry 5 in which the radioactive substance 50 and the removed substance adhering to the radioactive substance 50 are mixed) injected onto the road surface 1 is sucked and collected by the slurry collecting unit 8 and separated from the air by the separating unit 11. It collects in the slurry reservoir 27. The air separated from the slurry 5 by the separation unit 11 is exhausted from the exhaust cylinder 9a.

  Part of the slurry 5 collected in the slurry reservoir 27 is sent to the slurry injection unit 6 for reuse, and the other slurry 5 is sent to the slurry concentration meter 36 or sent to the radioactive substance separation unit 14. . The radioactive substance mixture separated from the slurry 5 by the radioactive substance separation unit 14 and mixed with the radioactive substance 50 at a high concentration is sent to the collected material container 20.

  The present inventors conducted a test for confirming the separation ability in the radioactive substance separation unit 14.

  That is, the liquid A passing through the slurry transport pipe 29 and the liquid B passing through the recovered material transport pipe 29a were collected, and the radiation concentrations of the liquids A and B were measured using a high-purity germanium semiconductor analyzer. .

  As a result, as shown in FIG. 9, the radiation concentration in the liquid B after the treatment by the radioactive substance separation unit 14 was significantly higher than that in the liquid A.

  Therefore, a high separation capability in the radioactive substance separation unit 14 according to the present example was confirmed.

  In addition, the present inventors also conducted a test for confirming the decontamination effect when the road surface treatment device M actually performs road surface treatment (decontamination treatment).

  That is, the surface density (surface contamination) of the road surface 1 after a predetermined time when the road surface treatment (decontamination treatment) was performed by the road surface treatment apparatus M was measured using a GM survey meter. The road surface 1 was tested on three types of road surfaces 1, concrete pavement, interlocking, and asphalt pavement.

  As a result, as shown in FIG. 10, the surface density of the road surface 1 was remarkably reduced with the lapse of the processing time in any road surface 1.

  Therefore, it was confirmed that the road surface treatment apparatus M (road surface treatment method) according to the present example was effective in removing the radioactive substance 50 adhering to the surface of the road surface 1 (having an excellent decontamination effect). .

  In addition, the present inventors can remove the radioactive substance 50 without damaging the road surface 1 as much as possible without damaging the road surface 1 excessively by adopting a wet blasting process. I have confirmed.

  Since the present embodiment is configured as described above, the radioactive substance 50 adhering to the road surface 1 can be removed reliably and satisfactorily, and the above-described effects can be achieved with a simple structure called wet blasting.

  Further, in this embodiment, the processing cover body 7 is provided with the slurry injection unit 6 and the slurry recovery unit 8 that recovers the slurry 5 injected by the slurry injection unit 6. The radioactive substance 50 is prevented from being discharged out of the apparatus M as much as possible, and therefore no environmental problems occur.

  Further, in the present embodiment, the slurry container 10 has a separating unit 11 that separates the slurry 5 introduced into the slurry container 10 into a liquid 3 and abrasive grains 4 and air by spirally flowing the slurry 5. Since it is provided, it is possible to suppress the discharge of the radioactive substance 50 out of the apparatus M as much as possible.

  Further, in the present embodiment, the separation unit 11 is provided with the first cylinder 12 in the inner space S1 of the slurry rotating container 10, and the second cylinder 13 is provided in the inner space S2 of the first cylinder 12. The inner space S1 and the inner space S2 are provided in a vented state, and the inner space S2 and the inner space S3 of the second cylindrical body 13 are provided in a vented state. 9, the slurry 5 introduced into the inner space S1 through the slurry recovery port 10a provided in the slurry circulating container 10 when the intake portion 9 is operated is the inner space S1. Then, the slurry 5 separated from the inner space S1 into the inner space S2 is further passed through the inner space S2 in a spiral fashion. The liquid 3 and the abrasive grains 4 are separated from the air, and the air is introduced into the intake portion 9 through the inner space S3. Since the liquid 3 and the abrasive grains 4 are configured to settle in the slurry circulating container 10, that is, because they are separated by generating a plurality of spiral flows (internal and external double cyclones), The radioactive substance 50 can be further prevented from being discharged out of the device M as much as possible.

  Further, in the present embodiment, the slurry collection unit 8 is a removed substance in which the radioactive substance 50 and the radioactive substance 50 are adhered by causing the liquid 3 and the abrasive grain 4 to flow spirally from the settled liquid 3 and abrasive grains 4. Since the radioactive substance separation unit 14 for separating the mixture of the liquid and the liquid is provided, the discharge of the radioactive substance 50 to the outside of the apparatus M can be suppressed as much as possible.

  Further, in this embodiment, the processing cover body 7 is provided with an opening 7a that allows the slurry 5 injected from the slurry injection unit 6 to collide with the road surface 1, and the road surface 1 is provided in the opening 7a. Since the flexible seal member 15 that comes into contact with is provided, the discharge of the radioactive substance 50 out of the apparatus M can be suppressed as much as possible in this respect.

  In this embodiment, the slurry injection unit 6 has a plurality of slurry injection nozzles 6 a arranged in parallel within the processing cover body 7, and each slurry injection nozzle 6 is swung in a direction orthogonal to the traveling direction of the moving body 22. Since the slurry 5 is jetted in a plane shape perpendicular to the traveling direction of the moving body 22, the slurry 5 is jetted evenly and evenly so that the radioactive material 50 adhering to the road surface 1 is improved. Can be removed.

  Further, in this embodiment, a compressed air injection unit 25 that injects compressed air toward the road surface 1 is provided behind the slurry injection unit 6, and the slurry injection unit 6 is compressed by the compressed air injected from the compressed air injection unit 25. Since the slurry 5 attached to the road surface 1 is removed by jetting from the fuel, the radioactive material 50 and the slurry 5 can be reliably removed and collected to prevent contamination to the surroundings as much as possible. .

  Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

S1 Inner space S2 Inner space S3 Inner space 1 Road surface 3 Liquid 4 Abrasive grain 5 Slurry 6 Slurry injection part 6a Slurry injection nozzle 7 Processing cover body 8 Slurry recovery part 9 Intake part
10 Slurry container
10a Slurry recovery port
11 Separation part
12 First cylinder
13 Second cylinder
14 Radioactive substance separator
15 Flexible seal member
22 Mobile
25 Compressed air injection unit
50 radioactive material

Claims (9)

  A road surface processing method for removing radioactive substances adhering to a road surface, wherein the radioactive material is removed by injecting slurry, which is a mixture of liquid and abrasive grains, with compressed air onto the road surface. .   A road surface processing apparatus that removes radioactive substances adhering to a road surface, comprising a slurry injection unit that injects slurry, which is a mixture of liquid and abrasive grains, onto the road surface together with compressed air on a moving body that moves on the road surface. A road surface processing device characterized by being damped.   The road surface processing apparatus according to claim 2, further comprising a processing cover body that forms a processing space that is surrounded by the vicinity of the road surface, and the processing cover body includes the slurry injection unit and the slurry injection unit. A road surface processing apparatus, comprising a slurry recovery unit for recovering the slurry sprayed by the vehicle.   4. The road surface processing apparatus according to claim 3, wherein the slurry recovery unit includes a slurry circulation housing body having an air intake portion connected to the processing cover body, and sucks air in the air suction portion to make the slurry circulation housing body have a negative pressure. Thus, the slurry in the processing cover body is sucked and collected, and further, the slurry introduced into the slurry circulation container is caused to flow in a spiral to the liquid and the abrasive grains. A road surface treatment apparatus, comprising a separation unit that separates into air.   5. The road surface processing apparatus according to claim 4, wherein the separation unit includes a first cylinder in the inner space S <b> 1 of the slurry circulating container, and a second cylinder in the inner space S <b> 2 of the first cylinder. The inner space S1 and the inner space S2 are provided in a vented state, and the inner space S2 and the inner space S3 of the second cylindrical body are provided in a vented state, and air in the inner space S3 is provided. Is provided so that the slurry introduced into the inner space S1 through the slurry collection port provided in the slurry circulating container when the suction unit is operated. The slurry that flows through the space S1 in a spiral shape and is separated into the liquid, the abrasive grains, and the air, and then the slurry introduced from the inner space S1 to the inner space S2 spirals in the inner space S2. Flowing through the liquid and the abrasive grains and air And the air is introduced into the intake portion through the inner space S3 and exhausted, and the liquid and the abrasive grains are configured to settle in the slurry container. Processing equipment.   6. The road surface treatment apparatus according to claim 5, wherein the slurry and the radioactive substance are flowed in a spiral shape from the settled liquid and the abrasive grains in the slurry recovery unit. A road surface treatment apparatus, comprising a radioactive substance separation unit that separates a mixture of attached removed matter and liquid.   The road surface processing apparatus according to any one of claims 3 to 6, wherein the processing cover body is provided with an opening that allows the slurry injected from the slurry injection unit to collide with the road surface. A road surface processing apparatus, wherein an opening is provided with a flexible seal member that contacts the road surface.   8. The road surface processing apparatus according to claim 2, wherein the slurry injection unit includes a plurality of slurry injection nozzles arranged in parallel in the processing cover body, and each slurry injection nozzle is set in a traveling direction of the moving body. A road surface processing apparatus configured to be swung in a direction orthogonal to the slurry so that the slurry is jetted in a plane shape in a direction orthogonal to the traveling direction of the moving body.   9. The road surface processing apparatus according to claim 2, further comprising a compressed air injection unit that injects compressed air toward the road surface behind the slurry injection unit, and is injected from the compressed air injection unit. A road surface processing apparatus configured to remove the slurry adhering to the road surface by jetting from the slurry jet section with compressed air.

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