A base for radioactive tailings disposal and a method of making the same

Abstract

The application relates to a base for radioactive tailing stacking, belonging to the field of tailing disposal, which comprises a frame, a cement base filled in the frame, and a seepage groove arranged on the upper surface of the cement base; a horizontal pipeline horizontally buried in the cement base, at least one end of the horizontal pipeline exceeding the frame; and vertical pipelines, a plurality of vertical pipelines connected to each horizontal pipeline to form a drainage channel; the upper end of each vertical pipeline is located in the seepage groove, and the upper end is flush with the lowest part of the seepage groove; and the cement base is prepared from a precipitation mother liquor, cement, an additive and ore leaching residue. The application provides a special stacking base for a tailing stacking body, which is used for supporting the solidified stacking body on mud or an inclined ground, isolating nuclides from penetrating into the ground under the stacking body, guiding seepage liquid to flow out of the stacking body for treatment.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tailings disposal, in particular to a base for radioactive tailings stacking and a preparation method thereof. BACKGROUND

[0002] Radioactive tailings produced after surface leaching of uranium ore at home and abroad are generally stacked in tailings ponds. Meanwhile, tailings produced by mineral processing of polymetallic ore containing radionuclides also need to be stacked in tailings ponds. At present, the tailings dam stacking method is generally used, and loose tailings are stacked layer by layer in the tailings pond, and the top and side are covered with stone and arranged flat. A effluent collection pool is set at the tail of the tailings pond to collect seepage liquid for treatment.

[0003] When the tailings are stacked, the weight of the stacked body is large, and the soil surface is difficult to bear; at the same time, only simple impermeable treatment is made between the existing radioactive tailings stacked body and the soil surface, and there is a risk of soil, surface water or shallow water pollution by seepage liquid. SUMMARY

[0004] The purpose of the present application is to provide a base for radioactive tailings stacking and a preparation method thereof to improve the above problems. In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0005] A base for radioactive tailings stacking, comprising:

[0006] a frame;

[0007] a cement base filled in the frame, and an upper surface of the cement base being provided with a seepage groove;

[0008] a horizontal pipeline horizontally buried in the cement base, at least one end of the horizontal pipeline exceeding the frame;

[0009] a vertical pipeline, a plurality of vertical pipelines are connected to each horizontal pipeline to form a drainage channel; the upper end of each vertical pipeline is located in the seepage groove, and the upper end is flush with the lowest part of the seepage groove;

[0010] The preparation method of the cement base comprises:

[0011] exchanging the precipitation mother liquor through calcium type cation saturated resin to obtain a calcium-rich mother liquor;

[0012] adding calcium oxide to the calcium-rich mother liquor to obtain an intermediate solution;

[0013] adding potassium carbonate to the intermediate solution, stirring and mixing, and then standing, filtering to obtain an activator;

[0014] mixing cement, additives, ore leaching residue and the activator, and solidifying and forming.

[0015] Optionally, the surface of the cement base is provided with anti-skid lines.

[0016] Optionally, the vertical pipes in the frame are arranged in a matrix, the vertical pipes in each row are in the same straight line, and the seepage groove is coincident with each row of vertical pipes.

[0017] Based on the same inventive concept, the application further provides a preparation method of the above-mentioned base for radioactive tailings stacking, comprising:

[0018] weaving the frame according to the topographic conditions of the stacking position;

[0019] arranging the horizontal pipes in the frame, if the ground is inclined, making the axial direction of the horizontal pipes consistent with the inclined direction, and making the lower end of the horizontal pipes beyond the frame;

[0020] opening holes on the upper surface of the horizontal pipes at a preset interval, and inserting vertical pipes into the holes;

[0021] enclosing the frame with temporary baffles, and pouring the cement base into the frame;

[0022] opening seepage grooves on the surface of the cement base, and obtaining the base after curing.

[0023] Optionally, the preparation method of the base for radioactive tailings stacking further comprises:

[0024] laying anti-skid strips on the surface of the cement base when the cement base is not cured;

[0025] polishing the anti-skid strips after the cement base is cured, and forming anti-skid lines on the surface of the cement base.

[0026] Optionally, the anti-skid strips are bamboo poles or bamboo slices.

[0027] Optionally, the included angle between the anti-skid strips and the inclined direction of the ground is greater than or equal to 15°.

[0028] Optionally, the additive comprises Al2O3 and SiO2, and the content of Al2O3 in the additive is greater than or equal to 10wt%, and the content of SiO2 in the additive is greater than or equal to 15wt%.

[0029] Optionally, the mass ratio of the excitation agent, the cement, the additive and the ore leaching residue is 100:(58-65):(65-70):(175-185).

[0030] Optionally, the added amount of potassium carbonate is 0.3-0.8wt% of the intermediate solution, and the purity of the potassium carbonate is greater than 99%.

[0031] The application has the following beneficial effects:

[0032] The application is a base for tailings heap, which is used for bearing the solidified heap on the soil or inclined ground and isolating the radionuclide from penetrating into the ground under the heap. The seepage groove and drainage channel of the base can guide the seepage liquid to flow out of the heap for treatment. The base is prepared by using the precipitation mother liquor waste liquid and tailings leaching residue to form a stable, solidified and high-strength gelatinous package, which can long-term inhibit the release of radioactive nuclides and prevent harmful substances from entering the air, water and soil and other environments.

[0033] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or can be learned by practice of the present application according to the embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0034] Fig. 1 It is a schematic diagram of the frame structure in the embodiment of the present application;

[0035] Fig. 2 It is a schematic diagram of the horizontal pipeline and vertical pipeline structure in the embodiment of the present application;

[0036] Fig. 3 It is a schematic diagram of the base structure for radioactive tailings heap in the embodiment of the present application.

[0037] Symbol explanation: 1-frame; 2-cement base; 3-horizontal pipeline; 4-vertical pipeline; 5-anti-skid pattern; 6-seepage groove. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0039] In the present application, when a numerical interval is involved, the numerical interval is regarded as continuous and includes the minimum value and the maximum value of the range and each value between the minimum value and the maximum value, unless otherwise specified. Further, when a range is referred to as an integer, each integer between the minimum value and the maximum value of the range is included. In addition, when multiple ranges are provided to describe a feature or a characteristic, the ranges can be combined. In other words, unless otherwise specified, all the ranges disclosed herein should be understood as including any and all sub-ranges included therein.

[0040] The uranium ore leaching residue and the tailings of the uranium-containing polymetallic ore dressing are solidified and formed into a heap, which is heavy and cannot be directly placed on the soft soil ground or inclined ground. Meanwhile, the seepage liquid may contaminate the soil and water.

[0041] As Figs. 1-3 To solve the problems in the prior art, the application provides a base for radioactive tailings stacking, which comprises:

[0042] a frame 1;

[0043] a cement base 2 filled in the frame 1, and a seepage groove 6 arranged on the upper surface of the cement base 2;

[0044] a horizontal pipeline 3 horizontally buried in the cement base 2, and at least one end of the horizontal pipeline 3 exceeding the frame 1;

[0045] a vertical pipeline 4, a plurality of vertical pipelines 4 are connected to each horizontal pipeline 3 to form a drainage channel; the upper end of each vertical pipeline 4 is located in the seepage groove 6, and the upper end is flush with the lowest part of the seepage groove 6;

[0046] The preparation method of the cement base 2 comprises:

[0047] performing exchange on the precipitation mother liquor by using calcium-type cation saturated resin to obtain a calcium-rich mother liquor;

[0048] adding calcium oxide to the calcium-rich mother liquor to obtain an intermediate solution;

[0049] adding potassium carbonate to the intermediate solution, stirring and mixing, and then standing, filtering to obtain an activator;

[0050] mixing cement, additives, ore leaching residue and the activator, and solidifying and forming.

[0051] The base is prepared by using precipitation mother liquor waste liquid and leaching residue waste material, is used for fixing and receiving a radioactive tailings stacking body, realizes waste utilization, the base is provided with a seepage groove 6 and a drainage channel, can collect the seepage liquid of the radioactive tailings stacking body, and prevents the seepage liquid from polluting the soil and water source near the stacking point.

[0052] The mine field is generally located in mountainous areas, and due to the limitation of geographical conditions, there is often a situation that the ground surface of the stacking point is inclined, and the stacking body may be displaced when stacking, therefore, as an optional implementation manner, an anti-skid pattern 5 is arranged on the surface of the cement base 2, which is used for increasing the friction between the base and the leaching residue stacking body, and preventing the stacking body from sliding on the base under the condition of terrain with high difference in height.

[0053] As an optional implementation manner, the vertical pipelines 4 in the frame 1 are arranged in a matrix, the vertical pipelines 4 in each row are on the same straight line, and the seepage groove 6 coincides with each row of vertical pipelines 4. Fig. 1 and Fig. 2As shown, the woven frame 1 is equally divided into several grids, four horizontally arranged pipes 3 are equally spaced in the frame 1 to divide the internal space of the frame 1 into several small grids, and then vertical pipes 4 are arranged on the four horizontally arranged pipes 3 according to the same arrangement to form a matrix arrangement. A seepage groove 6 is arranged along each row of vertical pipes 4.

[0054] Based on the same inventive concept, the application also provides a preparation method of the above-mentioned base for radioactive tailings stacking, comprising:

[0055] Weaving the frame 1 according to the topographic conditions of the stacking position;

[0056] Arranging the horizontally arranged pipes 3 in the frame 1, if the ground is inclined, the axial direction of the horizontally arranged pipes 3 is consistent with the inclined direction, and the lower end of the horizontally arranged pipes 3 exceeds the frame 1;

[0057] Holes are opened on the upper surface of the horizontally arranged pipes 3 at a predetermined interval, and the vertical pipes 4 are inserted into the holes;

[0058] Surrounding the frame 1 with a temporary baffle, and pouring the cement base 2 into the frame 1;

[0059] Reserving and opening the seepage groove 6 on the surface of the cement base 2; and obtaining the base after solidification.

[0060] In the preparation method of the base, the horizontally arranged pipes 3 are arranged along the inclined direction according to the topographic conditions, and the collected seepage liquid can automatically flow out of the horizontally arranged pipes 3 under the action of gravity; when weaving the frame 1, the height of the two ends of the frame 1 can be adjusted according to the degree of ground inclination to pre-level, that is, the heights of the two ends of the frame 1 can be inconsistent, and the height of the end located at the lower side of the slope is higher to prevent the inclination degree of the upper surface of the base from being too large.

[0061] As an optional embodiment, the preparation method of the base for radioactive tailings stacking further comprises:

[0062] Laying anti-skid strips on the surface of the cement base 2 when the cement base 2 is not solidified (semi-dry);

[0063] Grinding the anti-skid strips after the solidification of the cement base 2 to form anti-skid lines 5 on the surface of the cement base 2. The anti-skid strips are protrusions laid on the surface of the cement base 2, and as an optional embodiment, the anti-skid strips are thin bamboo poles or bamboo strips, and the bamboo poles or bamboo strips are immersed in the cement surface by about 0.5 cm. After solidification, the upper part of the bamboo pole is slightly ground by a grinding machine to make the surface rougher.

[0064] Preferably, the frame 1, the horizontally arranged pipes 3 and the vertical pipes 4 in the application can also be made of bamboo, which can be locally sourced near the mine site, has low cost, and has greater toughness to effectively prevent breakage.

[0065] As an optional implementation, the angle between the anti-skid strip and the direction of the ground inclination is greater than or equal to 15°. The anti-skid strip is used to prevent the pile from sliding, and the arrangement direction cannot be consistent with the inclination direction, so the anti-skid strip needs to be arranged obliquely.

[0066] As an optional implementation, the additive includes Al2O3 and SiO2, and the content of Al2O3 in the additive is greater than or equal to 10 wt%, and the content of SiO2 in the additive is greater than or equal to 15 wt%. The addition of Al2O3 and SiO2 can effectively reduce the precipitation amount of toxic and harmful elements, and at the same time, the strength of the solidified body is improved, and the uranium concentration in the effluent under the soaking condition is also significantly reduced. The aluminum-oxide ratio in the additive is 1.2-1.4. The aluminum-oxide ratio, also known as the aluminum-oxide rate or the iron rate, represents the ratio of the content of aluminum oxide (Al2O3) to the content of iron trioxide (Fe2O3); the aluminum-oxide ratio affects the key performances of the material after solidification, such as strength and crack resistance. Therefore, through experiments, it is determined that when the aluminum-oxide ratio of the additive in the present formulation is 1.2-1.4, the material performance reaches the optimal level.

[0067] As an optional implementation, the mass ratio of the activator, the cement, the additive, and the ore leaching residue is 100:(58-65):(65-70):(175-185). The activator obtained by modifying the precipitation mother liquor in the present application is an alkali activator. The alkali activator introduces alkali ions into the concrete, promotes the chemical reaction between silicate minerals in the concrete and water, and generates secondary hydration products. These products can fill the micro-pores inside the concrete, thereby improving the compactness and durability of the concrete.

[0068] As an optional implementation, the added amount of potassium carbonate is 0.3-0.8 wt% of the intermediate solution, and the purity of the potassium carbonate is greater than 99%. It is found in the research that, in the case of adding only calcium oxide, pores are easily generated inside the solidified body. However, by adding potassium carbonate, the tightness inside the solidified body can be improved, thereby enhancing the strength of the solidified body. At the same time, some impurities exist in the precipitation mother liquor, and the impurities are removed by forming a precipitate through the addition of potassium carbonate during the modification of the precipitation mother liquor.

[0069] The embodiments of the present application are described below through specific examples.

[0070] Example 1

[0071] A preparation method of a base for radioactive tailings pile, comprising:

[0072] S1, weaving a bamboo frame 1 according to the topographic conditions of the pile position;

[0073] S2, arranging a horizontal pipeline 3 in the frame 1, ensuring that the axial direction of the horizontal pipeline 3 is consistent with the inclination direction, and making the lower end of the horizontal pipeline 3 beyond the frame 1, and fixing the horizontal pipeline 3 and the frame 1 with a rope.

[0074] S3, drilling holes on the upper surface of the horizontal pipeline 3 at a predetermined interval, and inserting vertical pipelines 4 into the holes;

[0075] S4, surrounding the frame 1 with wooden boards as temporary baffle, and pouring cement base 2 into the frame 1;

[0076] S5, reserving seepage grooves 6 on the surface of the cement base 2, the seepage grooves 6 being used for guiding the seepage liquid of the tailings deposit on the base into the vertical pipelines 4, the upper opening of the vertical pipeline 4 being flush with the lowest part of the seepage groove 6; and obtaining the base after solidification.

[0077] The preparation method of the cement base 2 comprises the following steps:

[0078] S41, exchanging the precipitation mother liquor through calcium cation saturated resin to obtain a calcium-rich mother liquor;

[0079] The NaOH content in the precipitation mother liquor is 16wt%, and the uranium concentration is 2.7mg / L;

[0080] S42, adding calcium oxide to the calcium-rich mother liquor to obtain an intermediate solution;

[0081] Supplementing CaO into the calcium-rich mother liquor, mixing and stirring for 0.5h, and adjusting the OH - concentration to 1.6mol / L;

[0082] S43, adding potassium carbonate to the intermediate solution, and after mixing and stirring, standing, and filtering, obtaining an activator;

[0083] The amount of potassium carbonate added is 0.5wt% of the intermediate solution, the purity of potassium carbonate is more than 99%, and after adding, mixing and stirring for 1h;

[0084] S44, mixing cement, additives, leaching residue and the activator, and solidifying and forming;

[0085] The cement is Portland cement; the additives contain 15wt% of Al2O3 and 25wt% of SiO2, the aluminum oxygen ratio is 1.2, and the balance is water; the particle size of the leaching residue is 80-100 mesh, and the particle size accounts for more than 80%.

[0086] The mixed material is obtained by mixing according to the mass ratio of the activator:cement:additives:leaching residue being 100:60:68:180.

[0087] Example 2

[0088] A preparation method of a radioactive tailings deposit base comprises the following steps:

[0089] S1, weaving a bamboo frame 1 according to the topographic conditions of the deposit location;

[0090] S2, arranging the horizontal pipe 3 in the frame 1, if the ground is inclined, ensuring that the axis of the horizontal pipe 3 is consistent with the direction of inclination, so that the lower end of the horizontal pipe 3 exceeds the frame 1, and the horizontal pipe 3 is bound and fixed with the frame 1 by a rope;

[0091] S3, drilling holes on the upper surface of the horizontal pipe 3 at a predetermined interval, and inserting vertical pipes 4 into the holes;

[0092] S4, using a wooden board as a temporary baffle to enclose the frame 1, and pouring a cement base 2 into the frame 1;

[0093] S5, reserving and setting a seepage groove 6 on the surface of the cement base 2, the seepage groove 6 is used to guide the seepage liquid of the tailings heap on the base into the vertical pipe 4, and the upper opening of the vertical pipe 4 is flush with the lowest part of the seepage groove 6; after solidification, a base is obtained.

[0094] The preparation method of the cement base 2 comprises:

[0095] S41, exchanging the precipitation mother liquor through calcium cation saturated resin to obtain a calcium-rich mother liquor;

[0096] The NaOH content in the precipitation mother liquor is 18.1wt%, and the uranium concentration is 3.5mg / L;

[0097] S42, adding calcium oxide to the calcium-rich mother liquor to obtain an intermediate solution;

[0098] CaO is supplemented to the calcium-rich mother liquor, mixed and stirred for 0.5h, and the OH - concentration is adjusted to 1.7mol / L;

[0099] S43, adding potassium carbonate to the intermediate solution, and after stirring and mixing, standing, filtering to obtain an activator;

[0100] The amount of potassium carbonate added is 0.7wt% of the intermediate solution, and the purity of potassium carbonate is more than 99%, and after adding, the mixture is stirred for 1h;

[0101] S44, mixing cement, additives, leaching residue and the activator, and solidifying and forming;

[0102] Wherein, the cement is Portland cement; the additives contain 20wt% of Al2O3 and 25wt% of SiO2, the aluminum oxide ratio is 1.2, and the balance is water; the particle size of the leaching residue is 80-100 mesh, and the particle size is more than 80%.

[0103] The mixture is obtained by mixing according to the mass ratio of activator:cement:additive:leaching residue of 100:65:65:175.

[0104] Example 3

[0105] A method for preparing a base for radioactive tailings disposal, comprising:

[0106] S1, weaving a bamboo frame 1 according to the topographic conditions of the disposal site;

[0107] S2, arranging a horizontal pipe 3 in the frame 1, if the ground is inclined, ensuring that the axis of the horizontal pipe 3 is consistent with the inclination direction, and making the lower end of the horizontal pipe 3 beyond the frame 1, and binding and fixing the horizontal pipe 3 with the frame 1 with bamboo strips;

[0108] S3, drilling holes on the upper surface of the horizontal pipe 3 at a predetermined interval, and inserting a vertical pipe 4 into the hole;

[0109] S4, surrounding the frame 1 with a temporary baffle made of wood, and pouring a cement base 2 into the frame 1;

[0110] S5, reserving and opening a seepage groove 6 on the surface of the cement base 2, the seepage groove 6 being used to guide the seepage liquid of the tailings disposal body on the base into the vertical pipe 4, and the upper opening of the vertical pipe 4 being flush with the lowest part of the seepage groove 6; after solidification, the base is obtained.

[0111] The preparation method of the cement base 2 comprises:

[0112] S41, exchanging the precipitation mother liquor through calcium cation saturated resin to obtain a calcium-rich mother liquor;

[0113] The NaOH content in the precipitation mother liquor is 18.4wt%, and the uranium concentration is 4.7mg / L;

[0114] S42, adding calcium oxide to the calcium-rich mother liquor to obtain an intermediate solution;

[0115] CaO is supplemented to the calcium-rich mother liquor, mixed and stirred for 0.5h, and the OH - concentration is adjusted to 1.7mol / L;

[0116] S43, adding potassium carbonate to the intermediate solution, and after mixing and stirring, standing, filtering to obtain an activator;

[0117] The amount of potassium carbonate added is 0.4wt% of the intermediate solution, and the purity of potassium carbonate is more than 99%, and after adding, the mixture is stirred for 1h;

[0118] S44, mixing cement, additives, leaching residue and the activator, and solidifying and forming;

[0119] Wherein, the cement is Portland cement; the additives contain 10wt% of Al2O3 and 15wt% of SiO2, the aluminum oxygen ratio is 1.2, and the balance is water; the particle size of the leaching residue is 80-100 mesh, and the particle size is more than 80%.

[0120] The mixture was prepared by mixing the activator, cement, additive and leaching residue in a mass ratio of 100:60:66:185.

[0121] Comparative Example 1

[0122] The preparation method of this comparative example was basically the same as that of Example 1, except that no potassium carbonate was added to the intermediate solution for modification when preparing the cement matrix 2.

[0123] Comparative Example 2

[0124] The preparation method of this comparative example was basically the same as that of Example 1, except that the contents of Al2O3 and SiO2 components in the additive were reduced to 5wt% and 10wt%, respectively.

[0125] The cement matrix 2 prepared in Examples 1-3 and Comparative Examples 1-2 was subjected to the following tests:

[0126] Compressive strength test: The compressive strength of the cured body was determined according to GB / T 17671-1999;

[0127] Surface radon release rate test: The surface radon release rate of the cured body was determined according to EJT 979-1995;

[0128] Toxicity leaching test: The cured body was soaked in water for 7 days, and the uranium concentration in the leaching solution was determined.

[0129] The test results are shown in Table 1:

[0130] Table 1

[0131]

[0132] As can be seen from the test results in Table 1, when no potassium carbonate is used to modify the precipitation mother liquor in Comparative Example 1, the compressive strength of the cured body decreases; when the contents of Al2O3 and SiO2 components in the additive are reduced in Comparative Example 2, the strength of the cured body decreases, and the fixation effect on toxic and harmful substances becomes poor, and the release rate of radionuclides increases.

[0133] This method not only recycles the precipitation mother liquor waste liquid, but also improves the disposal level of leaching residue, reduces the reagent consumption and process complexity of waste treatment. The precipitation mother liquor waste liquid is mixed with other components for modification to prepare an activator, which is combined with cement and additive to solidify the uranium ore leaching residue, forming a stable, solidified, high-strength and non-leaching cement matrix 2, whose surface radioactivity index is less than the background value. The cement matrix 2 can be prepared and used on site at the stacking point, reducing the transportation process.

[0134] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A base for radioactive tailings disposal, characterised in that , comprising: a frame (1); a cement base (2) filled in the frame (1), and a seepage groove (6) arranged on the upper surface of the cement base (2); a horizontal pipe (3) horizontally buried in the cement base (2), and at least one end of the horizontal pipe (3) exceeding the frame (1); a vertical pipe (4) connected to the horizontal pipe (3), and the upper end of the vertical pipe (4) being located in the seepage groove (6) and being flush with the lowest part of the seepage groove (6); a preparation method of the cement base (2) comprising: exchanging a precipitation mother liquor through a calcium cation saturated resin to obtain a calcium-rich mother liquor; adding calcium oxide to the calcium-rich mother liquor to obtain an intermediate solution; adding potassium carbonate to the intermediate solution, stirring and mixing, and then standing and filtering to obtain an activator; mixing cement, an additive, ore leaching residue and the activator, and solidifying and forming; the additive comprising Al2O3 and SiO2, and the content of Al2O3 being greater than or equal to 10 wt%, and the content of SiO2 being greater than or equal to 15 wt%.

2. The base for radioactive tailings according to claim 1, characterized in that a non-slip pattern (5) arranged on the surface of the cement base (2).

3. The base for radioactive tailings according to claim 1, characterized in that the vertical pipes (4) in the frame (1) being arranged in a matrix, and the vertical pipes (4) in each row being arranged on the same straight line, and the seepage groove (6) being coincident with each row of vertical pipes (4).

4. The method of claim 1, wherein the method further comprises: comprising: ​ weaving the frame (1) according to the topographic conditions of the stacking position; arranging the horizontal pipe (3) in the frame (1), and if the ground is inclined, the axis of the horizontal pipe (3) is consistent with the direction of inclination, and the lower end of the horizontal pipe (3) exceeds the frame (1); punching holes on the upper surface of the horizontal pipe (3) at a predetermined interval, and inserting the vertical pipe (4) into the holes; enclosing the frame (1) with a temporary baffle, and pouring the cement base (2) into the frame (1); arranging the seepage groove (6) on the surface of the cement base (2), and obtaining the base after solidification.

5. The method of claim 4, wherein the method further comprises the step of: the preparation method of the base for stacking radioactive tailings further comprising: ​ laying the non-slip strip on the surface of the cement base (2) when the cement base (2) is not solidified; polishing the non-slip strip after the cement base (2) is solidified, and forming the non-slip pattern (5) on the surface of the cement base (2).

6. The method of claim 5, wherein the method further comprises the step of: the non-slip strip is a bamboo pole or a bamboo sheet. ​ 7. The method of claim 5, wherein the method further comprises the step of: the angle between the non-slip strip and the direction of ground inclination is greater than or equal to 15°. ​ 8. The method of claim 4, wherein the method further comprises the step of: the mass ratio of the activator, cement, additive and ore leaching residue is 100: (58-65): (65-70): (175-185). ​ 9. The method of claim 4, wherein the method further comprises the step of: the addition amount of potassium carbonate is 0.3-0.8 wt% of the intermediate solution, and the purity of the potassium carbonate is greater than 99%. ​

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