Manufacturing mold for microorganism grouting reinforcement soil body sample

Abstract

The utility model discloses a manufacturing mould of microorganism grouting reinforcement soil mass sample, including top cover, grouting diversion cover and molding ring wall, the grouting diversion cover is detachably connected with the molding ring wall and is symmetrically arranged at the upper and lower ends of the molding ring wall, the top cover is detachably connected with the first grouting diversion cover or the second grouting diversion cover, and the molding ring wall is provided with the molding ring wall. The top of the manufacturing die is provided. According to the utility model, a split type detachable structure is adopted for manufacturing, grouting, stripping and sampling a soil body sample, so that the soil body sample is quickly manufactured and conveniently taken out, the structure of the taken-out sample is complete, and the sample manufacturing efficiency and the sampling success rate are greatly improved; and uniform grouting is realized by utilizing the characteristics of convenient disassembly and replaceable mounting position of the top cover, so that the quality of the manufactured soil body sample is ensured.

Description

Technical Field

[0001] This utility model relates to the field of soil sample preparation mold technology, specifically to a preparation mold for soil samples reinforced by microbial grouting. Background Technology

[0002] Microbial-induced carbonate precipitation (MICP) is an emerging, environmentally friendly soil treatment method. Its principle involves using urease-producing bacteria to decompose urea into carbonate and ammonium ions. The carbonate ions (carbonate 2-) then combine with precipitable metal cations (such as Ca2+) to form carbonates (such as calcium carbonate). MICP has been used to improve various soil properties, including strength, liquefaction resistance, wind / water erosion resistance, permeability, and the degradation of heavy metals.

[0003] In the laboratory testing of MICP, soil specimens are typically reinforced, and there are three conventional reinforcement methods: immersion, grouting, and spraying. Immersion is difficult to apply to on-site soil treatment, and free spraying is generally suitable for surface solidification but cannot effectively solidify the soil interior. Therefore, grouting is the most commonly used method for microbial mineralization. However, during the experiment, soil specimens suffer from problems such as long preparation time, inability to form specimens after the mineralization reaction is complete, or inability to remove them from the mold. This invention provides a mold for preparing microbial grouting-reinforced soil specimens to solve the above problems. Utility Model Content

[0004] This utility model provides a mold for preparing soil samples for microbial grouting reinforcement. After grouting, the mold can be removed and samples taken without damaging the soil sample, ensuring the quality and effectiveness of the soil sample preparation.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is:

[0006] A mold for preparing soil samples reinforced by microbial grouting includes a top cover, a grout diversion cover, and a forming ring wall. The grout diversion cover includes a first grout diversion cover and a second grout diversion cover. The first and second grout diversion covers are detachably connected to the forming ring wall and are symmetrically arranged at the upper and lower ends of the forming ring wall. The top cover is detachably connected to either the first or the second grout diversion cover and is located at the top of the mold.

[0007] Furthermore, the formed ring wall includes ring wall units and connecting pins. The ring wall units are spliced ​​together to form a ring structure. The connecting pins are disposed in the ring wall units and connect adjacent ring wall units.

[0008] The ring wall unit includes an inner ring wall and an outer ring wall. The inner ring wall is located inside the outer ring wall and is offset from the outer ring wall. The inner ring walls of adjacent ring wall units are joined together to form an inner annular cylinder. The outer ring walls of adjacent ring wall units are spliced ​​together to form an outer annular cylinder, thus connecting the ring wall units into one unit.

[0009] Furthermore, the outer ring wall is provided with a connecting slot, a splicing step, and a splicing hole. The connecting slot is located on the outer wall of the outer ring wall, the splicing step is located on the left and right splicing surfaces of the outer ring wall, and the splicing hole is located on the splicing step. The splicing steps of adjacent ring wall units are spliced ​​together, and the splicing holes on the splicing steps of adjacent ring wall units are arranged vertically and vertically. The connecting pin is located in the splicing hole.

[0010] Furthermore, the ring wall unit includes a first ring wall unit, a second ring wall unit, and a third ring wall unit. The splicing step of the first ring wall unit is located at the upper part of the outer ring wall, the splicing steps of the second ring wall unit are located at the upper and lower parts of the outer ring wall, respectively, and the splicing step of the third ring wall unit is located at the lower part of the outer ring wall.

[0011] Furthermore, the top cover includes a cover body, a grouting pipe, a connecting buckle, and a slow-flow plug. The grouting pipe is located in the middle of the cover body and penetrates through the cover body. The connecting buckle is located on the inner wall of the cover body. The top cover is connected to the grouting diversion cover through the connecting buckle. The slow-flow plugs are spaced apart on the inner end face of the cover body.

[0012] Furthermore, the grouting diversion cover includes an outer cover body, a diversion water-blocking wall, and a connecting buckle. The diversion water-blocking wall is disposed on the inner end face of the outer cover body. The outer cover body is fitted with the outer wall of the outer ring wall. The end face of the diversion water-blocking wall is fitted with the end face of the inner ring wall. The connecting buckle is disposed on the inner wall of the outer cover body. The grouting diversion cover is connected to the outer ring wall through the connecting buckle. The outer cover body is provided with a connecting slot. The connecting slot is located on the outer wall of the outer cover body. The connecting buckle of the cover body is located in the connecting slot of the outer cover body.

[0013] Furthermore, the outer cover is provided with diversion and water-blocking slots, which are spaced apart on the outer cover and located within the range of the diversion and water-blocking wall;

[0014] The diversion and water-blocking groove includes a diversion groove and a grouting water-blocking hole. The diversion groove is set on the outer end face of the outer cover, and the grouting water-blocking hole is set on the outer cover and is correspondingly set with the slow-flow plug. In the assembled state, the slow-flow plug is located in the grouting water-blocking hole. The inner end of the diversion groove corresponds to the grout outlet of the grouting pipe, and the outer end of the diversion groove is located in the grouting water-blocking hole.

[0015] Furthermore, the connecting slots are located on the upper and lower sides of the outer ring wall, and the connecting slots on the upper and lower sides are staggered.

[0016] Preferably, the connecting slot is an L-shaped slot.

[0017] Preferably, the diversion channel is funnel-shaped.

[0018] The beneficial effects of this utility model are as follows:

[0019] The use of a split, detachable structure for soil sample preparation, grouting, and demolding sampling enables rapid preparation and convenient removal of soil samples. The removed samples have intact structures, greatly improving sample preparation efficiency and sampling success rate. The easy-to-remove top cover and interchangeable installation positions ensure uniform grouting and guarantee the quality of the prepared soil samples. Attached Figure Description

[0020] Figure 1 This is a schematic diagram showing the disassembled state of this utility model;

[0021] Figure 2 This is a schematic diagram of the top structure of the top cover of this utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the top cover of this utility model;

[0023] Figure 4 This is a schematic diagram of the top structure of the grouting diversion cover of this utility model;

[0024] Figure 5 This is a schematic diagram of the internal structure of the grouting diversion cover of this utility model;

[0025] Figure 6 This is a schematic diagram of the assembled state of the molded ring wall of this utility model;

[0026] Figure 7 This is a schematic diagram of the third ring wall unit structure of this utility model;

[0027] Figure 8 This is a schematic diagram of the second ring wall unit structure of this utility model;

[0028] Figure 9 This is a schematic diagram of the first ring wall unit structure of this utility model.

[0029] Reference numerals: 1. Top cover; 11. Cover body; 12. Grouting pipe; 13. Connecting buckle; 14. Slow-flow plug; 2. Grouting diversion cover; 201. First grouting diversion cover; 202. Second grouting diversion cover; 21. Outer cover body; 22. Diversion water-blocking wall; 23. Diversion water-blocking hole groove; 3. Molded ring wall; 31. Ring wall unit; 301. First ring wall unit; 302. Second ring wall unit; 303. Third ring wall unit; 311. Inner ring wall; 312. Outer ring wall; 313. Connecting slot; 314. Splicing step; 315. Splicing hole; 32. Connecting pin. Detailed Implementation

[0030] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] like Figure 1 As shown, a mold for preparing soil samples reinforced by microbial grouting includes a top cover 1, a grout diversion cover 2, and a forming ring wall 3. The grout diversion cover 2 includes a first grout diversion cover 201 and a second grout diversion cover 202. The first grout diversion cover 201 and the second grout diversion cover 202 are detachably connected to the forming ring wall 3 and are symmetrically arranged at the upper and lower ends of the forming ring wall 3. The top cover 1 is detachably connected to the first grout diversion cover 201 or the second grout diversion cover 202 and is located at the top of the mold.

[0033] The structure and usage status of the components after assembly in this embodiment are as follows: When assembling the mold, the ring wall unit 31 is first assembled into a formed ring wall 3. Then, the first grouting diversion cover 201 is installed at the upper end of the formed ring wall 3, the second grouting diversion cover 202 is installed at the lower end of the formed ring wall 3, and the top cover 1 is installed on the first grouting diversion cover 201. When placed, the first grouting diversion cover 201 is located at the upper part of the mold. Then, grout is injected into the mold from the top cover 1. After grouting is completed and the mold is left to stand for a period of time, the top cover 1 is removed from the first grouting diversion cover 201. Then, the mold is flipped up and down so that the second grouting diversion cover 202 is located at the upper part of the mold. Then, the top cover 1 is installed on the second grouting diversion cover 202 and grouting is performed again. After the grouting operation is completed and the mold is left to stand, the mold is disassembled and the soil sample is taken out.

[0034] The specific assembly method of this embodiment is as follows: First, align the splicing steps 314 of the three ring wall units 31—the first ring wall unit 301, the second ring wall unit 302, and the third ring wall unit 303—and splice them together. Then, insert the connecting pin 32 into the splicing hole 315 on the splicing step 314 to assemble the three ring wall units 31 into a formed ring wall 3. Then, fill the formed ring wall 3 with soil and compress and shape the soil. Finally, connect the first grouting diversion cover 201 and the second grouting diversion cover 202. The grout diversion covers 202 are installed at the upper and lower ends of the forming ring wall 3, respectively. During installation, the connecting clips 13 in the grout diversion cover 2 are inserted into the connecting slots 313 on the outer ring wall 312 and rotated to tighten, thus completing the installation of the first grout diversion cover 201 and the second grout diversion cover 202. Then, the top cover 1 is installed on the first grout diversion cover 201 by inserting and rotating to tighten in the same way. Finally, the grouting pipe 12 in the middle of the top cover 1 is connected to the peristaltic pump through a silicone hose to perform the grouting operation. Disassembly is performed in the reverse order.

[0035] In this embodiment, the flow path of the grout during grouting is as follows: The grout enters the mold through the grouting pipe 12 in the middle of the top cover 1. After entering, the grout drips into the diversion and water-blocking groove 23 on the outer cover 21 of the first grouting diversion cover 201. The grout flows evenly into the radially arranged diversion and water-blocking groove 23. The grout flowing into the diversion and water-blocking groove 23 enters the grouting water-blocking hole along the diversion groove. Most of the holes in the grouting water-blocking hole are blocked by the slow-flow plug 14, leaving only gaps at the edges, so that the grout can only slowly seep downwards from the edge of the grouting water-blocking hole. Then, the grout enters the molding ring wall 3 through the grouting water-blocking hole. In the compacted soil sample, the grout is permeated from top to bottom. Excess grout will flow out from the diversion and water-blocking groove 23 of the second grouting diversion cover 202. After grouting is completed and left to stand, the top cover 1 is removed and the mold is flipped over. The top cover 1 is then installed on the second grouting diversion cover 202, and grout is injected again through the top cover 1. The grout enters the soil sample again along the above path, permeating from the other end of the soil sample. By flipping the mold, the soil sample is grouted from both ends to ensure that the grout can permeate the soil sample evenly, thereby achieving the uniformity of grouting and ensuring the quality of soil sample preparation.

[0036] like Figure 6 As shown, the formed ring wall 3 further includes a ring wall unit 31 and a connecting pin 32. The ring wall units 31 are spliced ​​together to form a ring structure with openings at the top and bottom. The first grouting diversion cover 201 and the second grouting diversion cover 202 respectively seal the openings at the top and bottom. The connecting pin 32 is disposed in the ring wall unit 31 and is used to connect adjacent ring wall units 31 to splice the ring wall units 31 together as a whole.

[0037] like Figure 6 , 7 As shown in Figures 8 and 9, the annular wall unit 31 further includes an inner annular wall 311 and an outer annular wall 312. The inner annular wall 311 and the outer annular wall 312 are an integral structure. The inner annular wall 311 is located inside the outer annular wall 312. The inner annular wall 311 and the outer annular wall 312 are staggered to facilitate splicing between adjacent annular wall units 31. The inner annular walls 311 of adjacent annular wall units 31 fit together to form an inner annular cylinder for soil sample molding. The outer annular wall 312 is used for connecting the annular wall units 31. The outer annular walls 312 of adjacent annular wall units 31 are spliced ​​together by splicing steps 314 on their left and right sides to form an outer annular cylinder. The outer annular walls 312 are spliced ​​together and connected by connecting pins 32 disposed therein to connect the annular wall units 31 into one unit.

[0038] like Figure 6 , 7As shown in Figures 8 and 9, furthermore, the outer ring wall 312 is provided with a connecting slot 313, a splicing step 314, and a splicing hole 315; the connecting slot 313 is provided on the outer wall of the outer ring wall 312, and is used to cooperate with and secure together with the connecting buckle 13 on the outer cover 21 to prevent structural disintegration. The connecting slot 313 is provided on the upper and lower sides of the outer ring wall 312, and the upper and lower connecting slots 313 are staggered and have opposite opening directions, respectively used to connect the first grouting diversion cover 201 and the second grouting diversion cover 202. The staggered arrangement of the upper and lower connecting slots 313 is to prevent the first grouting diversion cover 201 and the second grouting diversion cover 202 from disassembling when the grouting diversion cover 2 is removed. The second grouting diversion cover 202 falls off simultaneously, preventing the internal soil sample from falling out; the splicing step 314 is provided on the left and right splicing surfaces of the outer ring wall 312 for splicing adjacent ring wall units 31, and the splicing hole 315 provided on the splicing step 314 is used to install the connecting pin 32, thereby connecting adjacent ring wall units 31 together; the splicing hole 315 is provided on the splicing step 314, and the splicing steps 314 of adjacent ring wall units 31 cooperate with each other to achieve splicing, and the splicing holes 315 on the splicing steps 314 of adjacent ring wall units 31 are arranged vertically to realize the placement of the connecting pin 32, and the connecting pin 32 is located in the splicing hole 315.

[0039] like Figure 6 , 7 As shown in Figures 8 and 9, in this embodiment, three annular wall units 31 are provided, including a first annular wall unit 301, a second annular wall unit 302, and a third annular wall unit 303. The two splicing steps 314 of the first annular wall unit 301 are both located on the upper part of the outer annular wall 312. The two splicing steps 314 of the second annular wall unit 302 are located on the upper and lower parts of the outer annular wall 312, respectively. The two splicing steps 314 of the third annular wall unit 303 are both located on the lower part of the outer annular wall 312.

[0040] like Figure 2 , 3 As shown, the top cover 1 further includes a cover body 11, a grouting pipe 12, a connecting buckle 13, and a slow-flow plug 14. The grouting pipe 12 is located in the middle of the cover body 11 and penetrates the cover body 11 vertically. The grouting pipe 12 is used to inject grout into the mold. The connecting buckles 13 are spaced apart on the inner wall of the cover body 11, with a total of three. The top cover 1 is connected to the grouting diversion cover 2 through the connecting buckles 13. The connecting buckles 13 in the top cover 1 cooperate with the connecting grooves 313 on the outer ring wall 312 of the grouting diversion cover 2 to realize the connection between the top cover 1 and the grouting diversion cover 2. The slow-flow plugs 14 are spaced apart on the inner end face of the cover body 11 and correspond to the setting position of the diversion and water-blocking grooves 23. The slow-flow plugs 14 are used to block the diversion and water-blocking grooves 23 on the outer cover body 21.

[0041] Furthermore, in the assembled state, the slow-flow plug 14 is located in the diversion and water-blocking groove 23, sealing the diversion and water-blocking groove 23. When sealing the diversion and water-blocking groove 23, it is not completely sealed. A gap is left between the slow-flow plug 14 and the edge of the diversion and water-blocking groove 23 to facilitate the infiltration of grout. The structure with gaps can slow down the infiltration rate of grout, making the infiltration more stable, and also make the infiltration of grout more uniform, resulting in better quality of the soil sample.

[0042] In the assembled state, the diversion and water-blocking groove 23 on the upper grouting diversion cover 2 is blocked by the slow-flow plug 14, so that the grout can be evenly and slowly seeped in. Meanwhile, the diversion and water-blocking groove 23 on the lower grouting diversion cover 2 is in normal condition, allowing oxygen to enter. At the same time, the upper and lower diversion and water-blocking grooves 23 form a smooth air passage, which facilitates the smooth entry of the grout injected from the upper part.

[0043] like Figure 4 , 5 As shown, the grouting diversion cover 2 further includes an outer cover body 21, a diversion and water-blocking wall 22, and a connecting buckle 13. The diversion and water-blocking wall 22 is annular and is located on the inner end face of the outer cover body 21. It is used to cooperate with the inner ring wall 311 for the molding of soil samples. The side wall of the outer cover body 21 is attached to the outer wall of the outer ring wall 312, and the end face of the diversion and water-blocking wall 22 is attached to the end face of the inner ring wall 311. The connecting buckles 13 are spaced apart on the inner wall of the outer cover body 21. The grouting diversion cover 2 is connected to the outer ring wall 312 through the connecting buckles 13. The outer cover body 21 is provided with a connecting groove 313. The connecting groove 313 is located on the outer wall of the outer cover body 21, and the connecting buckles 13 of the cover body 11 are located in the connecting groove 313 of the outer cover body 21.

[0044] Furthermore, the outer cover 21 is provided with diversion and water-blocking grooves 23, which are spaced apart on the outer cover 21 and arranged radially, and the diversion and water-blocking grooves 23 are located within the range of the diversion and water-blocking wall 22.

[0045] like Figure 4 , 5As shown, the diversion and water-blocking groove 23 includes a diversion groove and a grouting water-blocking hole. The diversion groove is located on the outer end face of the outer cover 21 and is funnel-shaped. The grouting water-blocking hole is located on the outer cover 21 and is located outside the diversion groove. The grouting water-blocking hole is correspondingly set with the slow-flow plug 14. In the assembled state, the slow-flow plug 14 is located in the grouting water-blocking hole. The diversion groove is arranged radially, with its inner end corresponding to the grout outlet of the grouting pipe 12 located in the center of the cover 11, and its outer end located in the grouting water-blocking hole. After the grout flows out from the grout outlet of the grouting pipe 12, it disperses into the diversion groove and enters the grouting water-blocking hole along the diversion groove. Due to the blockage of the grouting water-blocking hole by the slow-flow plug 14, the grout slowly and uniformly seeps into the soil sample from the reserved gap.

[0046] Furthermore, the connecting slot 313 is an L-shaped slot, used to stably secure the connecting buckle 13.

[0047] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A mold for preparing microbial grouting reinforced soil samples, characterized in that: The mold includes a top cover (1), a grout diversion cover (2), and a molding ring wall (3). The grout diversion cover (2) includes a first grout diversion cover (201) and a second grout diversion cover (202). The first grout diversion cover (201) and the second grout diversion cover (202) are detachably connected to the molding ring wall (3) and are symmetrically arranged at the upper and lower ends of the molding ring wall (3). The top cover (1) is detachably connected to the first grout diversion cover (201) or the second grout diversion cover (202) and is located at the top of the mold.

2. The mold for preparing microbial grouting reinforced soil samples according to claim 1, characterized in that: The formed ring wall (3) includes a ring wall unit (31) and a connecting pin (32). The ring wall units (31) are spliced ​​together to form a ring structure. The connecting pin (32) is disposed in the ring wall unit (31) and connects the adjacent ring wall units (31). The ring wall unit (31) includes an inner ring wall (311) and an outer ring wall (312). The inner ring wall (311) is located inside the outer ring wall (312) and is offset from the outer ring wall (312). The inner ring walls (311) of adjacent ring wall units (31) are connected to each other to form an inner annular cylinder. The outer ring walls (312) of adjacent ring wall units (31) are spliced ​​together to form an outer annular cylinder, and the ring wall units (31) are connected as one unit.

3. The mold for preparing microbial grouting reinforced soil samples according to claim 2, characterized in that: The outer ring wall (312) is provided with a connecting slot (313), a splicing step (314) and a splicing hole (315). The connecting slot (313) is located on the outer wall of the outer ring wall (312). The splicing step (314) is located on the left and right splicing surfaces of the outer ring wall (312). The splicing hole (315) is located on the splicing step (314). The splicing steps (314) of adjacent ring wall units (31) are spliced ​​together, and the splicing holes (315) on the splicing steps (314) of adjacent ring wall units (31) are arranged vertically and vertically. The connecting pin (32) is located in the splicing hole (315).

4. The mold for preparing microbial grouting reinforced soil samples according to claim 3, characterized in that: The ring wall unit (31) includes a first ring wall unit (301), a second ring wall unit (302) and a third ring wall unit (303). The splicing step (314) of the first ring wall unit (301) is located on the upper part of the outer ring wall (312). The splicing step (314) of the second ring wall unit (302) is located on the upper and lower parts of the outer ring wall (312) respectively. The splicing step (314) of the third ring wall unit (303) is located on the lower part of the outer ring wall (312).

5. The mold for preparing microbial grouting reinforced soil samples according to claim 3, characterized in that: The top cover (1) includes a cover body (11), a grouting pipe (12), a connecting buckle (13), and a slow-flow plug (14). The grouting pipe (12) is located in the middle of the cover body (11) and penetrates through the cover body (11). The connecting buckle (13) is located on the inner wall of the cover body (11). The top cover (1) is connected to the grouting diversion cover (2) through the connecting buckle (13). The slow-flow plugs (14) are spaced apart on the inner end face of the cover body (11).

6. The mold for preparing microbial grouting reinforced soil samples according to claim 5, characterized in that: The grouting diversion cover (2) includes an outer cover body (21), a diversion water-blocking wall (22), and a connecting buckle (13). The diversion water-blocking wall (22) is located on the inner end face of the outer cover body (21). The outer cover body (21) is attached to the outer wall of the outer ring wall (312). The end face of the diversion water-blocking wall (22) is attached to the end face of the inner ring wall (311). The connecting buckle (13) is located on the inner wall of the outer cover body (21). The grouting diversion cover (2) is connected to the outer ring wall (312) through the connecting buckle (13). The outer cover body (21) is provided with a connecting groove (313). The connecting groove (313) is located on the outer wall of the outer cover body (21). The connecting buckle (13) of the cover body (11) is located in the connecting groove (313) of the outer cover body (21).

7. The mold for preparing microbial grouting reinforced soil samples according to claim 6, characterized in that: The outer cover (21) is provided with diversion and water-blocking grooves (23), which are spaced apart on the outer cover (21) and located within the range of the diversion and water-blocking wall (22); The diversion water-blocking groove (23) includes a diversion groove and a grouting water-blocking hole. The diversion groove is set on the outer end face of the outer cover (21). The grouting water-blocking hole is set on the outer cover (21) and is correspondingly set with the slow flow plug (14). In the assembled state, the slow flow plug (14) is located in the grouting water-blocking hole. The inner end of the diversion groove corresponds to the grout outlet of the grouting pipe (12). The outer end of the diversion groove is located in the grouting water-blocking hole.

8. The mold for preparing microbial grouting reinforced soil samples according to claim 3, characterized in that: The connecting slot (313) is an L-shaped slot.

9. The mold for preparing microbial grouting reinforced soil samples according to claim 7, characterized in that: The diversion channel is funnel-shaped.

10. The mold for preparing microbial grouting reinforced soil samples according to claim 3, characterized in that: The connecting slots (313) are located on the upper and lower sides of the outer ring wall (312), and the connecting slots (313) on the upper and lower sides are staggered.

Images