Repairing container and repairing method

Abstract

The embodiment of the invention provides a servicing container and a servicing method, the servicing container is used for containing radioactive solid waste, and the servicing container comprises an outer barrel, a lining, a supporting frame and a first cement fixing body. The lining is provided with a containing cavity, the containing cavity is used for containing the radioactive solid waste, the lining is arranged in the outer barrel, and at least part of the area of the lining and the outer barrel are spaced to form an interval space. The supporting frame is arranged in the interval space and connected with the outer barrel and the lining. A first cement fixing body is arranged in the interval space so as to wrap the lining. The reconditioning container provided by the embodiment of the invention can improve the disposal effect on the radioactive solid waste.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of radioactive solid waste conditioning, and in particular to a conditioning container and a conditioning method. BACKGROUND

[0002] With the increasing proportion of nuclear energy in the national energy field, the environmental problems caused thereby are also increasingly valued, especially the radioactive pollution in the soil. Due to the characteristics of large pollution volume, different pollution degrees, strong concealment and hysteresis, if not handled and disposed properly, the environmental chemical behaviors of radionuclides in the terrestrial ecosystem, such as adsorption, desorption, migration, transformation and fate, may cause serious harm to human health and even the ecological civilization of the whole earth. Through a large amount of literature research and on-site source survey, it is known that the activity level of the radioactive soil around most nuclear facilities is low, belonging to the category of low-level contaminated soil.

[0003] However, the conditioning method of the related art has poor conditioning and disposal effect on the radioactive contaminated soil, and has great safety hazards. SUMMARY

[0004] Therefore, the main purpose of the embodiments of the present application is to provide a conditioning container and a conditioning method with good disposal effect.

[0005] To achieve the above-mentioned purpose, the technical scheme of the embodiments of the present application is as follows: The first aspect of the embodiments of the present application provides a conditioning container for containing radioactive solid waste, comprising: an outer barrel; an inner liner having a containing cavity for containing the radioactive solid waste, the inner liner being arranged in the outer barrel and spaced from the outer barrel to form a spacing space in at least a partial region; a support frame arranged in the spacing space and connected with the outer barrel and the inner liner, respectively; a first cement fixing body arranged in the spacing space to wrap the inner liner.

[0006] In one embodiment, the conditioning container comprises a plurality of support frames; at least two support frames are arranged in a vertical direction; and / or, at least two support frames are symmetrically arranged on opposite sides of the inner liner in a horizontal direction.

[0007] In one embodiment, a bottom wall of the inner liner is arranged in a spaced manner with a bottom wall of the outer barrel to form at least a part of the spacing space, and the first cement fixing body is arranged between the bottom wall of the inner liner and the bottom wall of the outer barrel; and / or, The outer peripheral surface of the inner liner is spaced apart from the inner peripheral surface of the outer barrel to form at least part of the spacing space, and the first cement fixing body is arranged between the outer peripheral surface of the inner liner and the inner peripheral surface of the outer barrel.

[0008] In an embodiment, the prepared container further comprises a second cement fixing body, the second cement fixing body is located at the top of the first cement fixing body and the inner liner, and the first cement fixing body and the second cement fixing body enclose a closed space, and the inner liner is located in the closed space.

[0009] In an embodiment, in a projection plane parallel to a horizontal plane, the projection of the first cement fixing body and the inner liner is located within the projection range of the second cement fixing body.

[0010] In an embodiment, the second cement fixing body is located in the outer barrel, and the prepared container further comprises a cover located on the top side of the second cement fixing body, and the cover is located in the outer barrel and closes the outer barrel.

[0011] The first aspect of the embodiments of the present application provides a preparation method, which is used for any of the above-mentioned prepared containers, and the preparation method comprises the following steps: Filling cement mortar between the outer barrel and the inner liner to form the first cement fixing body; Filling the radioactive solid waste into the accommodating cavity of the inner liner.

[0012] In an embodiment, the step of filling cement mortar between the outer barrel and the inner liner to form the first cement fixing body specifically comprises the following steps: Extending the discharge end of the delivery hose between the bottom wall of the inner liner and the bottom wall of the outer barrel; Pressurizing and delivering the cement mortar by a pressurized injection pump to form the first cement fixing body.

[0013] In an embodiment, after the step of filling the radioactive solid waste into the accommodating cavity of the inner liner, the preparation method further comprises the following steps: Pre-pressing the radioactive solid waste in the accommodating cavity by a pre-pressing machine; Pouring cement mortar at the top of the first cement fixing body and the inner liner to form a second cement fixing body.

[0014] In an embodiment, the cement mortar comprises cement, aggregate, water and polyvinyl alcohol; The mass percentage of the cement is greater than or equal to 40% and less than or equal to 60%; and / or, The mass percentage of the aggregate is greater than or equal to 30% and less than or equal to 50%; and / or, the mass percentage of the water is greater than or equal to 10% and less than or equal to 20%; and / or, the mass percentage of the polyvinyl alcohol is greater than or equal to 1% and less than or equal to 5%.

[0015] The embodiment of the present application provides a conditioning container and a conditioning method. The conditioning container is used for containing radioactive solid waste. The conditioning container comprises an outer barrel, an inner liner, a support frame and a first cement fixing body. A containing cavity of the inner liner is used for containing radioactive solid waste. The inner liner is arranged in the outer barrel and at least partially spaced from the outer barrel to form a spacing space. In one aspect, the support frame is arranged in the spacing space and connected with the outer barrel and the inner liner respectively. The support frame can achieve a better fixing effect and can make the installation of the inner liner in the outer barrel more stable. In the process of forming the first cement fixing body, the inner liner is not easy to shake in the outer barrel due to the arrangement of the support frame. The first cement fixing body can be better formed, filling of the radioactive solid waste into the containing cavity of the inner liner is facilitated, and thus the disposal effect of the conditioning container on the radioactive solid waste can be improved. In another aspect, the first cement fixing body is arranged in the spacing space to wrap the inner liner, so that a better shielding effect can be achieved and the requirement of radiation protection can be better met, so that the safety performance of the conditioning container can be improved and the disposal effect on the radioactive solid waste can be further improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a structural schematic diagram of a conditioning container according to an embodiment of the present application, and shows radioactive solid waste; Figure 2 FIG. 2 is a partial structural schematic diagram of the conditioning container in FIG. 1; Figure 1 FIG. 3 is a structural schematic diagram of the conditioning container in FIG. 1 and a cooperating relationship with a conveying hose and a cement pressurized pouring pump; Figure 3 Figure 2 FIG. 4 is a structural schematic diagram of the conditioning container in FIG. 1 and a cooperating relationship with a first cement fixing body; Figure 4 FIG. 5 is a structural schematic diagram of the conditioning container in FIG. 1 and a cooperating relationship with a pre-pressing machine and radioactive solid waste; Figure 2 FIG. 6 is a flow chart of a conditioning method according to an embodiment of the present application. Figure 5 Figure 4 FIG. 7 is a flow chart of another conditioning method according to an embodiment of the present application. Figure 6 FIG. 8 is a flow chart of another conditioning method according to an embodiment of the present application.

[0017] FIG. 9 is a flow chart of another conditioning method according to an embodiment of the present application. 10, outer barrel; 20, inner liner; 20a, containing cavity; 20b, spacing space; 30, support frame; 40, first cement fixing body; 50, second cement fixing body; 60, conveying hose; 70, cement pressurized pouring pump; 80, pre-pressing machine; 90, radioactive solid waste.​​ DETAILED DESCRIPTION

[0018] In the present application, the "top", "bottom", "horizontal direction" orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. Figure 2 It should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0019] In the description of the embodiments of the present application, the technical terms "first", "second", "third" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the technical features indicated. In the description of the embodiments of the present application, the meaning of "multiple" is two and more than two, unless otherwise explicitly and specifically limited.

[0020] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrence of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0021] An embodiment of the present application provides a conditioning container, please refer to Figure 1 and Figure 2 The conditioning container is used for containing radioactive solid waste 90, and the conditioning container comprises an outer barrel 10, an inner liner 20, a support frame 30 and a first cement fixing body 40.

[0022] The inner liner 20 has a containing cavity 20a for containing radioactive solid waste 90, and the inner liner 20 is arranged in the outer barrel 10 and at least partially spaced from the outer barrel 10 to form a spacing space 20b.

[0023] The support frame 30 is arranged in the spacing space 20b and connected with the outer barrel 10 and the inner liner 20 respectively.

[0024] The first cement fixing body 40 is arranged in the spacing space 20b to wrap the inner liner 20.

[0025] Specifically, the conditioning container is used for treating conditioned radioactive solid waste 90, wherein the specific type of the radioactive solid waste 90 can be determined according to actual conditions, for example, the radioactive solid waste 90 is low-level contaminated soil.

[0026] The outer barrel 10 is located outside the inner liner 20, which can play a good protection role.

[0027] The inner liner 20, the support frame 30, and the first cement fixing body 40 are all located in the outer barrel 10. Among them, the accommodating cavity 20a of the inner liner 20 can be used to accommodate radioactive solid waste 90. And the inner liner 20 can be spaced from the outer barrel 10 in the whole area, that is, there is no area directly contacting between the inner liner 20 and the outer barrel 10. Of course, the inner liner 20 can also be spaced from the outer barrel 10 in only part of the area, and the other part of the area is in contact with the outer barrel 10.

[0028] The specific shape, size, and material of the inner liner 20 and the outer barrel 10 are not limited and can be set according to actual conditions.

[0029] For example, the outer barrel 10 and the inner liner 20 are both cylindrical structures, and the top of the accommodating cavity 20a of the inner liner 20 is open to form a filling inlet.

[0030] For another example, the outer barrel 10 is a steel structure, the volume of the outer barrel 10 is 200L, the diameter is 575±5mm, and the height is 900±5mm.

[0031] For another example, the inner liner 20 is an aluminum or steel structure, the thickness of the inner liner 20 is 2mm, the height of the inner liner 20 is greater than or equal to 700mm and less than or equal to 800mm, such as 700mm, 750mm or 800mm. The outer diameter of the inner liner 20 is greater than or equal to 375mm and less than or equal to 535mm, such as 375mm, 515mm or 535mm.

[0032] The arrangement mode between the inner liner 20 and the outer barrel 10 can be set according to actual conditions.

[0033] For example, the inner liner 20 and the outer barrel 10 are coaxially arranged, so that the spacing space 20b formed on the side of the inner liner 20 is more uniform, and the arrangement of the first cement fixing body 40 is more uniform.

[0034] Of course, in other embodiments, the inner liner 20 and the outer barrel 10 can also be arranged non-coaxially.

[0035] The support frame 30 and the first cement fixing body 40 are arranged in the spacing between the inner liner 20 and the outer barrel 10, that is, in the spacing space 20b formed by the two.

[0036] Among them, the support frame 30 can have a good supporting effect, can improve the connection stability between the inner liner 20 and the outer barrel 10, so as to better fix the inner liner 20 in the outer barrel 10.

[0037] The first cement fixing body 40 is also arranged in the spacing space 20b, which can shield the radioactive solid waste 90 in the inner liner 20 by wrapping the inner liner 20, thereby improving the safety performance of the whole container. On the other hand, the stability of the inner liner 20 can be improved, and the whole container is more stable.

[0038] The specific number and arrangement of the support frames 30 are not limited.

[0039] For example, referring to Figure 2 and Figure 3 The whole container includes a plurality of support frames 30, and at least two support frames 30 are arranged in the vertical direction.

[0040] That is, in each support frame 30, at least two support frames 30 are arranged in the vertical direction. In this way, the stability of the inner liner 20 in the vertical direction can be improved.

[0041] It should be noted that all support frames 30 can be arranged in the vertical direction, or only part of the support frames 30 can be arranged in the vertical direction.

[0042] For another example, the whole container includes a plurality of support frames 30, and at least two support frames 30 are symmetrically arranged on opposite sides of the inner liner 20 in the horizontal direction.

[0043] That is, in each support frame 30, at least two support frames 30 are arranged in the horizontal direction and located on opposite sides of the inner liner 20. In this way, the support frames 30 can fix the inner liner 20 from opposite sides of the inner liner 20, and the stability of the inner liner 20 in the horizontal direction can be improved.

[0044] It should be noted that all support frames 30 can be arranged in the horizontal direction, or only part of the support frames 30 can be arranged in the horizontal direction.

[0045] For example, the whole container includes a plurality of support frames 30, wherein part of the support frames 30 are arranged in the vertical direction, and part of the support frames 30 are arranged in the horizontal direction.

[0046] Of course, in other embodiments, the whole container can also include only one support frame 30.

[0047] Another embodiment of the present application provides a whole preparation method, referring to Figure 6 The whole preparation method is used for the whole container of any embodiment of the present application, and the whole preparation method includes the following steps: Step S1: filling cement mortar between the outer barrel 10 and the inner liner 20 to form the first cement fixing body 40.

[0048] Step S2: Fill the receiving cavity 20a of the liner 20 with radioactive solid waste 90.

[0049] Specifically, since a support frame 30 is provided in the space 20b between the inner liner 20 and the outer barrel 10, the relative position between the inner liner 20 and the outer barrel 10 is more stable during the process of filling cement mortar between the outer barrel 10 and the inner liner 20, which makes it easier for the cement mortar to fill the space 20b, thereby making it easier to form the first cement fixation body 40.

[0050] In the preparation container of this application embodiment, on the one hand, the support frame 30 is disposed in the interval space 20b and is connected to both the outer barrel 10 and the inner liner 20. The support frame 30 provides a good fixing effect, making the installation of the inner liner 20 within the outer barrel 10 more stable. During the molding of the first cement fixation body 40, the presence of the support frame 30 prevents the inner liner 20 from shaking within the outer barrel 10, facilitating the molding of the first cement fixation body 40. It also facilitates the filling of radioactive solid waste 90 into the receiving cavity 20a of the inner liner 20, thus improving the preparation container's disposal effect on radioactive solid waste 90. On the other hand, the first cement fixation body 40, disposed in the interval space 20b to enclose the inner liner 20, provides a good shielding effect, effectively meeting radiation protection requirements, thereby improving the safety performance of the preparation container and further enhancing the disposal effect on radioactive solid waste 90.

[0051] In one embodiment, please refer to Figure 3 and Figure 4 The bottom wall of the inner liner 20 is spaced apart from the bottom wall of the outer barrel 10 to form at least a portion of the space 20b. A first cement fixing body 40 is provided between the bottom wall of the inner liner 20 and the bottom wall of the outer barrel 10. As a result, the first cement fixing body 40 can cover the bottom of the inner liner 20 to improve the bottom protection of the container.

[0052] Specifically, the bottom wall of the inner liner 20 and the bottom wall of the outer barrel 10 are not fitted together, but are spaced apart. Depending on the actual situation, the gap between the bottom wall of the inner liner 20 and the bottom wall of the outer barrel 10 can be a part of the gap space 20b or the entire gap space 20b. That is to say, the inner liner 20 and the outer barrel 10 can be separated only by their bottom sides and filled with the first cement fixing body 40, or they can be separated by other areas besides the bottom sides and filled with the first cement fixing body 40.

[0053] In fact, the spacing between the bottom wall of the inner liner 20 and the bottom wall of the outer barrel 10 can be achieved by clamping them together with at least two support frames 30 symmetrically arranged in the horizontal direction. This restricts the inner liner 20 from falling further, causing the inner liner 20 to adhere to the bottom wall of the outer barrel 10, which is beneficial for the filling of the first cement fixing body 40.

[0054] In one embodiment, please refer to Figure 3 and Figure 4 The outer circumferential surface of the inner liner 20 is spaced apart from the inner circumferential surface of the outer barrel 10 to form at least a portion of the space 20b. A first cement fixing body 40 is provided between the outer circumferential surface of the inner liner 20 and the inner circumferential surface of the outer barrel 10. As a result, the first cement fixing body 40 can wrap around the periphery of the inner liner 20 to improve the periphery protection of the container.

[0055] Specifically, the outer circumferential surface of the inner lining 20 and the inner circumferential surface of the outer barrel 10 are not fitted together, but are spaced apart. Depending on the actual situation, the gap between the outer circumferential surface of the inner lining 20 and the inner circumferential surface of the outer barrel 10 can be a part of the gap space 20b or the entire gap space 20b. That is to say, the inner lining 20 and the outer barrel 10 can be separated only by their circumferential sides and filled with the first cement fixing body 40, or they can be separated by other areas besides the circumferential sides and filled with the first cement fixing body 40.

[0056] In one specific embodiment, please refer to Figure 4 The outer circumferential surface of the inner lining 20 and the inner circumferential surface of the outer barrel 10 are spaced apart, and the bottom wall of the inner lining 20 and the bottom wall of the outer barrel 10 are connected to each other and filled with a first cement fixing body 40.

[0057] In one embodiment, please refer to Figure 1 and Figure 2 The container also includes a second cement fixing body 50, which is located on top of the first cement fixing body 40 and the inner liner 20. The first cement fixing body 40 and the second cement fixing body 50 enclose a closed space, and the inner liner 20 is located within the closed space. This provides better protection.

[0058] Specifically, the first cement fixation body 40 can wrap around the periphery and bottom of the inner liner 20, and the second cement fixation body 50 can wrap around the top of the inner liner 20. Thus, the first cement fixation body 40 and the second cement fixation body 50 can achieve all-round wrapping of the inner liner 20, thereby achieving an all-round protection effect and further reducing the risk of radioactive solid waste 90 penetrating the preparation container and affecting the external environment.

[0059] In one embodiment, please refer to Figure 1 and Figure 2In a projection plane parallel to the horizontal plane, the projections of the first cement fixing body 40 and the inner lining 20 lie within the projection range of the second cement fixing body 50. This improves the protective effect of the second cement fixing body 50.

[0060] In other words, the second cement fixation body 50 covers the first cement fixation body 40 and the inner lining 20. From a projection perspective, the projections of the first cement fixation body 40 and the inner lining 20 are located within the projection range of the second cement fixation body 50.

[0061] Depending on the actual situation, the projections of the first cement fixing body 40 and the inner lining 20 may coincide with the projection range of the second cement fixing body 50, or the projection area of ​​the first cement fixing body 40 and the inner lining 20 may be smaller than the projection area of ​​the second cement fixing body 50.

[0062] In one embodiment, the second cement fixing body 50 is located inside the outer barrel 10, and the preparation container also includes a cover located on the top side of the second cement fixing body 50, the cover being located inside the outer barrel 10 and sealing the outer barrel 10. This improves the overall stability of the preparation container.

[0063] Specifically, the cover and the second cement fixation body 50 are both located inside the outer barrel 10, and the cover can close the outer barrel 10 from the top of the outer barrel 10, thereby preventing the inner liner 20, radioactive solid waste 90, support frame 30, first cement fixation body 40 and second cement fixation body 50 located inside the outer barrel 10 from detaching from the outer barrel 10, thus improving the overall stability of the preparation container.

[0064] The specific connection method between the support frame 30 and the outer barrel 10 and the inner lining 20 is not limited. It can adopt detachable connection methods such as fastening, snap-fit, insertion, and abutment, or it can adopt non-detachable connection methods such as bonding and welding.

[0065] Preferably, the support frame 30 is 30mm long and is fixed with M12 bolts, thereby ensuring that the gap between the outer wall of the inner liner 20 and the inner wall of the outer barrel 10 is 30mm, and the distance between the bottom of the inner liner 20 and the bottom of the outer barrel 10 is 30mm.

[0066] In one specific embodiment, the vertical cross-sectional shape of the support frame 30 is trapezoidal or rectangular. Using a trapezoidal or rectangular cross-sectional shape can facilitate the fixing of the inner lining 20.

[0067] In one specific embodiment, the support frame 30 and the inner wall of the outer barrel 10 form an enclosing cavity, which is filled with a first cement fixing body 40. That is, the enclosing area between the support frame 30 and the inner wall of the outer barrel 10 is also filled with the first cement fixing body 40. This allows for a tighter connection between the support frame 30 and the first cement fixing body 40, resulting in a better wrapping effect of the first cement fixing body 40 on the inner lining 20.

[0068] In one specific embodiment, the support frame 30 has a flange that folds towards the inner wall of the outer tub 10, and the support frame 30 is connected to the inner wall of the outer tub 10 through the flange. This improves the connection stability between the support frame 30 and the outer tub 10.

[0069] In one embodiment, please refer to Figure 3 and Figure 4 The process involves filling the space between the outer barrel 10 and the inner lining 20 with cement mortar to form the first cement-fixed body 40, specifically including the following steps: Step S1: Extend the discharge end of the conveying hose 60 between the bottom wall of the inner liner 20 and the bottom wall of the outer barrel 10.

[0070] Step S2: Pressurize and deliver cement mortar using a pressurized injection pump to form the first cement fixation body 40.

[0071] By using pressurized grouting to inject cement mortar from the bottom of the liner 20, it is possible to ensure that the space 20b is filled, which can provide conditions for the subsequent filling of radioactive solid waste 90 in the containment cavity 20a.

[0072] It should be noted that the operating pressure of the pressurized injection pump can be set according to actual conditions. For example, the operating pressure of the pressurized injection pump can be greater than or equal to 1 bar and less than or equal to 2 bar. Preferably, the operating pressure of the pressurized injection pump is 1.5 bar.

[0073] The delivery hose 60 can be a rubber hose or other types of hose. Its inner diameter can be set according to the actual situation.

[0074] For example, the inner diameter of the delivery hose 60 is greater than or equal to 2 cm and less than or equal to 4 cm. More preferably, the inner diameter of the delivery hose 60 is 2 cm.

[0075] The specific configuration of the discharge end of the conveying hose 60 can be set according to the actual situation.

[0076] For example, the preparation container includes a flat nozzle located at the outlet end of the delivery hose 60, which can be made of steel or other materials. This facilitates the input of cement mortar, increases the flowability of cement mortar in narrow gaps, and ensures that the cement mortar completely fills the gaps.

[0077] The formation of the first cement fixation body 40 requires a certain amount of time. For example, after the cement mortar is delivered, it is cured for 3 days to form the first cement fixation body 40.

[0078] In one embodiment, please refer to Figure 4 and Figure 5After filling the receiving cavity 20a of the liner 20 with radioactive solid waste 90, the preparation method further includes the following steps: Step S1: The radioactive solid waste 90 in the containment chamber 20a is pre-compressed by the pre-compressor 80.

[0079] Step S2: Cement mortar is poured on top of the first cement fixation body 40 and the inner liner 20 to form the second cement fixation body 50. This ensures that the dense radioactive solid waste 90 fills the inner liner 20 and provides good shielding.

[0080] Specifically, there are no restrictions on the filling method of radioactive solid waste 90; it can be filled manually or mechanically.

[0081] After radioactive solid waste 90 is filled into the inner liner 20, a pre-compressor 80 is used to pre-compress the inside of the container, thereby compacting the radioactive solid waste 90.

[0082] It should be noted that the cement mortar forming the second cement fixation body 50 can have the same or different formulas as the cement mortar forming the first cement fixation body 40.

[0083] In one specific embodiment, the cement mortar formulas of the first cement fixation body 40 and the second cement fixation body 50 are the same. The pouring process of the second cement fixation body 50 adopts the natural pouring method. After a shielding layer with a height of about 100 mm is formed above the radioactive solid waste 90 that has been filled, the pouring is stopped and the subsequent preparation operation is carried out after curing for at least 3 days.

[0084] Subsequent preparation procedures: Radioactive solid waste 90 was completely sealed with a cement fixation body, and then the outer container 10 was capped to form the final preparation container. The contamination status of the preparation container surface was monitored, and after confirming that it met safe transportation standards, it was temporarily stored for transport. This process met the prescribed requirements for low-level radioactive soil immobilization and radiation protection, maximizing the space utilization of the dedicated container.

[0085] In one embodiment, the cement mortar includes cement, aggregate, water, and polyvinyl alcohol. The specific type of aggregate can be determined according to actual conditions.

[0086] For example, aggregates include one or more of fly ash, quartz sand, and slag.

[0087] The content of each component in cement mortar can be determined according to the actual situation.

[0088] For example, the mass percentage of cement is greater than or equal to 40% and less than or equal to 60%. Such as 40%, 50%, or 60%. Controlling the mass percentage of cement within the above range can effectively improve the strength, shrinkage, and durability of cement-fixed structures.

[0089] For example, the mass percentage of aggregate is greater than or equal to 30% and less than or equal to 50%. Such as 30%, 40%, or 50%. Controlling the mass percentage of aggregate within the above range can effectively improve the strength, shrinkage, and durability of cementitious structures.

[0090] For example, the water mass percentage is greater than or equal to 10% and less than or equal to 20%, such as 10%, 15%, or 20%. Controlling the water mass percentage within the above range can better control the fluidity of cement mortar and better improve the strength, shrinkage, and durability of cement-fixed structures.

[0091] For example, the mass percentage of polyvinyl alcohol is greater than or equal to 1% and less than or equal to 5%, such as 1%, 3%, or 5%. Controlling the mass percentage of polyvinyl alcohol within the above range can effectively improve the mechanical properties of cement-fixed structures.

[0092] Preferred cement mortar formula: 40% cement, 40% aggregate (mixture of fly ash and quartz sand), 15% water, and 5% polyvinyl alcohol. This formula ensures both the fluidity of the cement mortar, allowing it to fill the voids completely, and the mechanical strength of the cement fixation body.

[0093] In the description of this application, the references to terms such as "in one embodiment," "in some embodiments," "in a specific embodiment," or "exemplary," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of the different embodiments or examples.

[0094] The above are merely preferred embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the protection scope of this application.

Claims

1. A preparation container for containing radioactive solid waste, characterized in that, The preparation container includes: Outer drum; The inner liner has a receiving cavity for containing the radioactive solid waste, and the inner liner is disposed inside the outer container, with at least a portion of the inner liner spaced apart from the outer container to form an intervening space. A support frame is disposed in the interval space and is connected to the outer barrel and the inner lining respectively; A first cement fixation body is disposed in the space to enclose the lining.

2. The preparation container according to claim 1, characterized in that, The preparation container includes multiple support frames; At least two of the aforementioned support frames are arranged at intervals along the vertical direction; and / or, At least two of the support frames are symmetrically arranged on opposite sides of the liner in the horizontal direction.

3. The preparation container according to claim 1, characterized in that, The bottom wall of the inner lining is spaced apart from the bottom wall of the outer barrel to form at least a portion of the space, and the first cement fixing body is disposed between the bottom wall of the inner lining and the bottom wall of the outer barrel; and / or, The outer peripheral surface of the lining is spaced apart from the inner peripheral surface of the outer barrel to form at least a portion of the space, and the first cement fixing body is disposed between the outer peripheral surface of the lining and the inner peripheral surface of the outer barrel.

4. The preparation container according to claim 1 or 2, characterized in that, The preparation container also includes a second cement fixing body, which is located on top of the first cement fixing body and the inner liner. The first cement fixing body and the second cement fixing body enclose a closed space, and the inner liner is located within the closed space.

5. The preparation container according to claim 4, characterized in that, Within a projection plane parallel to the horizontal plane, the projections of the first cement fixture and the inner lining lie within the projection range of the second cement fixture.

6. The preparation container according to claim 4, characterized in that, The second cement fixing body is located inside the outer bucket, and the preparation container also includes a cover located on the top side of the second cement fixing body, the cover being located inside the outer bucket and sealing the outer bucket.

7. A preparation method, said preparation method being used for the preparation container according to any one of claims 1-6, characterized in that, The preparation method includes the following steps: Cement mortar is filled between the outer barrel and the inner lining to form the first cement fixation body; The radioactive solid waste is filled into the accommodating cavity of the liner.

8. The preparation method according to claim 7, characterized in that, The process of filling the space between the outer barrel and the inner lining with cement mortar to form the first cement-fixed body specifically includes the following steps: Extend the discharge end of the conveying hose between the bottom wall of the inner liner and the bottom wall of the outer barrel; The cement mortar is pressurized and delivered by a pressurized injection pump to form the first cement fixation body.

9. The preparation method according to claim 7, characterized in that, After filling the receiving cavity of the liner with the radioactive solid waste, the preparation method further includes the following steps: The radioactive solid waste in the containment cavity is pre-compressed using a pre-compressor; Cement mortar is poured on top of the first cement fixation body and the lining to form a second cement fixation body.

10. The preparation method according to claim 7 or 9, characterized in that, The cement mortar includes cement, aggregate, water, and polyvinyl alcohol; The cement's mass percentage is greater than or equal to 40% and less than or equal to 60%; and / or, The aggregate mass percentage is greater than or equal to 30% and less than or equal to 50%; and / or, The water mass percentage is greater than or equal to 10% and less than or equal to 20%; and / or, The mass percentage of the polyvinyl alcohol is greater than or equal to 1% and less than or equal to 5%.

Images