3D surrounding type frozen soil melting swelling amount measuring device

Abstract

The utility model discloses a 3D surrounding type frozen soil melting swelling amount measuring device which comprises a measuring assembly and a measuring device. Comprising an operation terminal, a magnetic attraction door arranged on the operation terminal, an AGV sample table arranged in the operation terminal, a driving piece arranged in the operation terminal, a detection cavity arranged in the operation terminal, a lifting table arranged in the detection cavity and a horizontal rotation track arranged in a detection cabin, and a laser measuring instrument is arranged in the detection cavity; the storage bin has four layers; a storage assembly is arranged in the detection cavity and comprises a first measurement frame body, a second measurement frame body arranged on the first measurement frame body, a telescopic lantern ring arranged between the first measurement frame body and the second measurement frame body and a measurement scale arranged on the telescopic lantern ring; and the compaction assembly comprises a lower pressing block arranged on the second measurement frame body, a lower pressing cutter body arranged on the lower pressing block and a pressing ring arranged on the lower pressing cutter body.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of frozen soil expansion measurement, especially to a 3D surrounding type frozen soil thawing expansion measurement device. BACKGROUND

[0002] Seasonal frozen soil is widely distributed in high latitude and high altitude areas in China. The freezing and thawing process of seasonal frozen soil often causes differential settlement of pipelines, railways, highways, water conservancy and hydropower engineering and other infrastructure in frozen soil areas, insufficient bearing capacity of foundation and other engineering problems. Geological disasters such as landslides, collapses and debris flows are also related to the freezing and thawing process of seasonal frozen soil. Therefore, accurate determination of the expansion of frozen soil as a basic work for the analysis and research of frozen soil plays an important role in engineering safety, ecological environment, soil mechanics and other research and practice, and accurate determination of the expansion of frozen soil is of great significance.

[0003] For a long time, there is a lack of special device for measuring the expansion of frozen soil in the field of scientific research. Many scientific researchers regard the soil sample as an approximate cylinder, measure the diameter of the bottom surface and cross section and the height of the cylinder at multiple angles by using a vernier caliper, and then calculate the volume of the soil sample. This method has large error and complicated steps.

[0004] Most of the existing soil sample volume measurement experiments adopt the method mentioned in the standard for soil test methods (GBT50123-1999). This method measures the volume of the soil sample by using the wax sealing method for irregular hard soil. The specific operation steps are as follows: after the soil sample is weighed, it is placed in wax liquid that is just above the melting point. When the soil sample is completely wrapped, it is taken out and weighed in air and water, so as to calculate the volume of the soil sample. This method can be used to measure the volume of irregular soil samples, but when multiple soil sample volumes need to be measured in batches, the wax liquid needs to be heated repeatedly. In addition, in order to avoid air bubbles in the wax sealed sample, the method of applying wax slowly needs to be used repeatedly, which is a complicated process. Chinese utility model patent with patent application number 201120408775.4 discloses a "irregular object volume measurement device". This utility model uses the Archimedes principle to measure the volume of irregular objects and the volume of objects floating on the water surface by using the drainage method. The device has simple structure, convenient operation and high measurement accuracy, but the soil sample needs to be immersed in water when measured by using this method. Since the soil sample will be soft due to water absorption, this method is not suitable for measuring the volume of soil samples. Chinese invention patent with publication number CN102829836A discloses a "volume measurement method and device for fissured soil body", which converts the measurement of the mass of the object subjected to the buoyancy into the measurement of the volume. Although this method for volume measurement by using liquid is convenient to operate and has high accuracy, it must be operated at room temperature and is not suitable for volume measurement of frozen soil in the unfrozen state. CONTENT OF THE UTILITY MODEL

[0005] The purpose of this part is to outline some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part and the abstract of the specification and the title of the application in order to avoid obscuring the purpose of this part, the abstract of the specification and the title of the application, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0006] In view of the above problems existing in the prior art 3D surrounding permafrost thawing expansion measurement device, the present application is proposed.

[0007] To solve the above technical problems, the present application provides the following technical solutions: a 3D surrounding permafrost thawing expansion measurement device, comprising,

[0008] The measurement assembly comprises an operation terminal, a magnetic attraction door arranged on the operation terminal, an AGV sample table arranged in the operation terminal, a driving member arranged in the operation terminal, a detection cavity arranged in the operation terminal, a lifting platform arranged in the detection cavity, and a horizontal rotary track arranged in the detection cavity, a laser measuring instrument is arranged in the detection cavity, and the storage bin has four layers in total;

[0009] The detection cavity is provided with a storage assembly, the storage assembly comprises a first measurement frame body, a second measurement frame body arranged on the first measurement frame body, an expansion sleeve ring arranged between the first measurement frame body and the second measurement frame body, and a measurement scale arranged on the expansion sleeve ring; and,

[0010] The compaction assembly comprises a lower pressing block arranged on the second measurement frame body, a lower pressing cutting knife body arranged on the lower pressing block, and a pressing ring arranged on the lower pressing cutting knife body.

[0011] As a preferred scheme of the 3D surrounding permafrost thawing expansion measurement device, the driving member comprises a driving motor arranged in the operation terminal, a plane thrust bearing arranged on the driving motor, and a lifting guide rail, and the lifting platform is connected with the lifting guide rail and the driving motor.

[0012] As a preferred scheme of the 3D surrounding permafrost thawing expansion measurement device, the operation terminal is provided with a temperature control system, the temperature control system comprises an evaporator, a compressor connected with the evaporator, and a cross-flow fan connected with the compressor.

[0013] As a preferred scheme of the 3D surrounding type frozen soil thawing expansion amount measuring device, the AGV sample table is provided with a pressure sensor and a power control device, the pressure sensor is used for detecting whether the AGV sample table is placed with a sample and sending relevant information to an operation terminal, and the power control device drives the sample to move along a preset path after receiving an instruction of the operation terminal.

[0014] As a preferred scheme of the 3D surrounding type frozen soil thawing expansion amount measuring device, the first measuring frame body is provided with a clamping ring at the lower end, the first measuring frame body comprises a plurality of splicing plates arranged in an array on the clamping ring, the lower end of each splicing plate is provided with a sliding strip, the upper surface of the clamping ring is provided with a plurality of sliding grooves matched with the sliding strips, the control disc is rotatably connected in the clamping ring, the control disc is not connected with the rotating shaft, a plurality of first protrusions are arranged on the side wall of the control disc, the rear end of each sliding strip is provided with a second protrusion, the sliding strip and the sliding groove are connected in cooperation, and a friction pad is arranged on the side wall of the sliding strip.

[0015] As a preferred scheme of the 3D surrounding type frozen soil thawing expansion amount measuring device, the second measuring frame body and the first measuring frame body are consistent in structure, and the telescopic sleeve ring comprises a plurality of arc-shaped plates connected with each other and a sliding sheet arranged between every two adjacent arc-shaped plates.

[0016] As a preferred scheme of the 3D surrounding type frozen soil thawing expansion amount measuring device, the telescopic sleeve ring is provided with a turned edge on both sides, and the sliding sheet is provided with a matched edge matched with the turned edge.

[0017] As a preferred scheme of the 3D surrounding type frozen soil thawing expansion amount measuring device, the lower pressing block is provided with a plug-in groove at the end, the lower pressing cutting tool body is provided with a bent rod at the upper end, and the end of the bent rod is provided with a matched plug-in rod matched with the plug-in groove.

[0018] As a preferred scheme of the 3D surrounding type frozen soil thawing expansion amount measuring device, the matched plug-in rod is provided with a first clamping hole, the outer wall of the plug-in groove is provided with a second clamping hole matched with the first clamping hole, and a lock rod is arranged between the first clamping hole and the second clamping hole.

[0019] As a preferred scheme of the 3D surrounding type frozen soil thawing expansion amount measuring device, the lower pressing cutting tool body and the bent rod are detachably connected.

[0020] The utility model discloses the beneficial effect has: the utility model discloses 3D surround type laser measuring system is used to measure the volume of soil sample, effectively solved the defect of big measuring error of vernier caliper and the disadvantage of long time consumption of wax sealing method operation, effectively eliminate the defect of liquid method not applicable to frozen soil volume measurement simultaneously. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the embodiment description needed to use the drawing of the utility model make a brief introduction, obviously, the following description in the drawing only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings. Wherein:

[0022] Figure 1 It is the whole structure schematic diagram of the measuring device of 3D surround type frozen soil thawing expansion of the utility model.

[0023] Figure 2 It is the whole structure section view schematic diagram of the measuring device of 3D surround type frozen soil thawing expansion of the utility model.

[0024] Figure 3 It is the whole structure internal schematic diagram of the measuring device of 3D surround type frozen soil thawing expansion of the utility model.

[0025] Figure 4 It is the storage assembly schematic diagram of the measuring device of 3D surround type frozen soil thawing expansion of the utility model.

[0026] Figure 5 It is the whole structure section view schematic diagram of the measuring device of 3D surround type frozen soil thawing expansion of the utility model.

[0027] Figure 6 It is the second measuring frame body schematic diagram of the measuring device of 3D surround type frozen soil thawing expansion of the utility model.

[0028] Figure 7 It is the telescopic sleeve schematic diagram of the measuring device of 3D surround type frozen soil thawing expansion of the utility model. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purpose, feature and advantage of the utility model more obvious and easy to understand, the following will be to the specific embodiment of the utility model detailed description with the drawing of the specification.

[0030] In the following description, a lot of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can be practiced in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the spirit of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0031] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an independent or alternative embodiment.

[0032] Thirdly, the present application is described in detail in conjunction with the schematic diagram, in the detailed description of the embodiments of the present application, for the convenience of description, the cross-sectional view of the device structure will be partially enlarged without general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present application. In addition, three-dimensional spatial dimensions including length, width and depth should be included in actual manufacture. Embodiment 1

[0033] Reference Figures 1-3 For the first embodiment of the present application, a 3D surrounding type frozen soil thawing expansion measuring device is provided, which comprises a measuring assembly 100, in the embodiment, the measuring assembly 100 comprises a box body, an operation terminal 101 arranged on the box body, a magnetic suction door 102 arranged on the box body, an AGV sample table 103 arranged in the box body, a driving part 104 arranged in the box body, a detection cavity 105 arranged in the box body, a lifting platform 106 arranged in the detection cavity 105, and a horizontal rotary track 107 arranged in the detection cavity 105, a laser measuring instrument 108 is arranged in the detection cavity 105, the AGV sample table 103 has four layers, the measuring bin of the detection cavity 105 is located at the top layer, and the sample is transported to the lifting guide rail 104c by the AGV sample table 103.

[0034] As preferred, the lifting platform 106 is of a scissor type structure, by controlling the measuring bin module of the operation terminal 101, the rotation of the lifting platform 106 driving motor 104a can be accurately driven, the motor rotation is converted into the extension and contraction of the scissor type structure through the connecting rod, the stable lifting of the lifting platform 106 is completed, and the orderly progress of the measuring work is ensured.

[0035] The AGV sample table 103 is driven by the driving member 104 to be vertically lifted into the detection cavity 105 for measurement. The AGV sample table 103 is moved to the scissor lift 106, and is slowly lifted to a certain height by the driving motor 104a. The laser scanner performs comprehensive scanning around the sample according to the track to obtain volume expansion data and the like and transmits the data to the operation terminal 101. After the measurement is completed, the sample can be transported back to the original storage position along the original route, so as to realize full-automatic large-scale measurement of the expansion of the freeze-thaw cycle soil sample.

[0036] Further, in the embodiment, the driving member 104 includes a driving motor 104a arranged in the box, a planar thrust bearing 104b arranged on the driving motor 104a, and a lifting guide rail 104c. The lifting platform 106 is connected with the lifting guide rail 104c and the driving motor 104a, and a lifting platform 106 coupling is arranged between the driving motor 104a and the lifting platform 106.

[0037] A temperature control system 101a is arranged in the box. The temperature control system 101a includes an evaporator 101b, a compressor 101c connected with the evaporator 101b, and a cross-flow fan 101d connected with the compressor 101c. The temperature in the box is intelligently controlled by the operation terminal 101, so as to realize freeze-thaw cycle of the sample.

[0038] Further, a pressure sensor and a power control device are arranged on the AGV sample table 103. The pressure sensor is used to detect whether the sample is placed on the AGV sample table 103 and to send relevant information to the operation terminal 101. The power control device drives the sample to move according to the preset path after receiving the instruction of the operation terminal 101.

[0039] As preferred, the AGV sample table 103 is provided with a silicon piezoresistive pressure sensor, which can be used to detect whether the sample is placed on the sample table 103, and can be used to measure the mass of the sample in the freeze-thaw cycle in real time, calculate the mass loss rate, and transmit the data to the operation terminal 101.

[0040] In use, the sample is sent into a separate measurement chamber through the lifting guide rail 104c, so as to ensure the accuracy and stability of the measurement work. The laser scanner can perform horizontal circular motion around the sample through the horizontal rotary track 107, and scans the sample in the horizontal direction. The sample is placed on the lifting platform 106, and the sample is scanned layer by layer by continuously adjusting the lifting height and cooperating with the horizontal circular scanning of the scanner, so as to realize 3D surrounding laser measurement. Embodiment 2

[0041] Reference Figures 4-7The embodiment is different from the previous embodiment in that: further, the utility model also includes storage assembly 200, in this embodiment, storage assembly 200 includes a plurality of first measuring frame body 201 arranged on AGV sample table 103, second measuring frame body 202 is arranged on first measuring frame body 201, first measuring frame body 201 is overall circular plate shape, second measuring frame body 202 is located the position above first measuring frame body 201, and both oppositely arranged, a plurality of telescopic sleeve rings 203 are arranged between first measuring frame body 201 and second measuring frame body 202, a plurality of telescopic sleeve rings 203 are stacked and arranged, and the two telescopic sleeve rings 203 close to first measuring frame body 201 and second measuring frame body 202 are connected with first measuring frame body 201 and second measuring frame body 202, measuring scale 204 is further arranged on telescopic sleeve ring 203, and the scale of measuring scale is displayed as 0 when telescopic sleeve ring 203 is in the state of not being used (not telescoping).

[0042] Further, the present application also includes compaction assembly 300, in this embodiment, compaction assembly 300 includes lower pressing block 301 arranged on second measuring frame body 202, lower pressing cutting knife body 302 arranged on lower pressing block 301 and pressing ring 303 arranged on lower pressing cutting knife body 302, when measuring, the operator places the frozen soil in the range formed by first measuring frame body 201 and telescopic sleeve, then the operator uses lower pressing block 301 to press the frozen soil down and compact by lower pressing cutting knife body 302, and then closes second measuring frame body 202.

[0043] As preferred, a hinge shaft is arranged between lower pressing block 301 and second measuring frame body 202, so that the operator holds second measuring frame body 202 as a whole when using lower pressing block 301, and then presses.

[0044] Further, clamping ring 205 is arranged at the lower end of first measuring frame body 201, in this embodiment, first measuring frame body 201 includes a plurality of arrayed splicing plates 201a arranged on clamping ring 205, sliding strip 201b is arranged at the lower end of each splicing plate 201a, in order to realize sliding, a plurality of sliding grooves 201c matched with sliding strip 201b are arranged on the upper surface of clamping ring 205, control disc 201d is rotatably connected in clamping ring 205, control disc 201d is not connected with the rotating shaft, a plurality of first protrusions are arranged on the side wall of control disc 201d, second protrusion 201f is arranged at the rear end of each sliding strip 201b, sliding strip 201b and sliding groove 201c are matched and connected, and friction pad is arranged on the side wall of sliding strip 201b, so as to increase the friction between sliding strip 201b and sliding groove 201c.

[0045] Further, the second measuring frame 202 and the first measuring frame 201 are consistent in structure, so that the second measuring frame 202 and the first measuring frame 201 can be expanded and contracted synchronously.

[0046] In the embodiment, the telescopic sleeve 203 comprises a plurality of mutually connected arc-shaped plates 203a and a sliding sheet 203b arranged between each two adjacent arc-shaped plates 203a, the sliding sheet 203b is used to connect each two adjacent arc-shaped plates 203a and make up the gap between the arc-shaped plates 203a when the frozen soil expands, a flange is arranged on the upper and lower sides of the telescopic sleeve 203, a matching edge is arranged on the sliding sheet 203b and matched with the flange, so as to limit the sliding sheet 203b and prevent the sliding sheet 203b from falling off.

[0047] Preferably, the measuring scale is arranged on the sliding sheet 203b.

[0048] Further, the end of the pressing block 301 is provided with a plug-in slot 404, the upper end of the pressing cutting tool body 302 is provided with a bent rod 405, and the end of the bent rod 405 is provided with a matching plug-in rod 406 matched with the plug-in slot 404.

[0049] Further, the matching plug-in rod 406 is provided with a first clamping hole 407, the outer wall of the plug-in slot 404 is provided with a second clamping hole 408 matched with the first clamping hole 407, and a locking rod 409 is arranged between the first clamping hole 407 and the second clamping hole 408, so that the operator can replace the pressing cutting tool body 302.

[0050] Further, the pressing cutting tool body 302 and the bent rod 405 are detachably connected, and the pressing cutting tool body 302 is provided with a rotating shaft at the center position, and the rotating shaft is connected with the hole at the lower end of the bent rod 405.

[0051] Preferably, a thermal insulation layer is arranged in the first measuring frame 201, the second measuring frame 202 and the telescopic sleeve 203, and a heat preservation layer is attached to the thermal insulation layer.

[0052] Operation process: when the operator measures, the frozen soil is placed in the range formed by the first measuring frame 201 and the telescopic sleeve, then the operator uses the pressing block 301 to press the frozen soil down to compact the frozen soil by the pressing cutting tool body 302, and then closes the second measuring frame 202, so that the frozen soil is installed at this time, and the operator can wait for the frozen soil to thaw, and the expansion of the volume of the frozen soil after thawing will cause the telescopic sleeve 203 to expand, so that the scale on the telescopic sleeve 203 is observed and measured.

[0053] It is important to note that the construction and arrangements of the application shown in the various exemplary embodiments are illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications can be made to the embodiments without departing from the novel teachings and advantages of the subject matter described herein (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, locations, and the like). For example, the elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements or positions can be modified or changed. Accordingly, all such modifications are intended to be included within the scope of the present inventive subject matter. The order or sequence of any process or method steps can be varied or re-sequenced without departing from the subject matter described herein. Any "means plus function" clauses are intended to cover the structures described herein as performing the recited functions and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present inventive subject matter. Accordingly, the present inventive subject matter is not limited to the particular embodiments described and illustrated herein, but extends to equivalents of which the foregoing describes are intended to cover.

[0054] Also, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation can not be described (i.e., those unrelated to the best mode of practicing the present inventive subject matter, or those unrelated to enabling the claimed application).

[0055] It should be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions can be made. Such development efforts might be complex and time-consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill in the art having the benefit of this disclosure.

[0056] It should be noted that the above-mentioned embodiments are only used to illustrate the technical solutions of the present application but not to limit the present application, and although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalent replaced without departing from the spirit and scope of the technical solutions of the present application, and all should be included in the scope of the claims of the present application.

Claims

1. A 3D surround-type measuring device for the thawing expansion of frozen soil, characterized in that: include, The measuring assembly (100) includes a housing (100a), an operating terminal (101) mounted on the housing (100a), a magnetic door (102) mounted on the operating terminal (101), an AGV sample stage (103) mounted inside the operating terminal (101), a drive unit (104) mounted inside the operating terminal (101), a detection chamber (105) mounted inside the operating terminal (101), a lifting platform (106) mounted inside the detection chamber (105), and a horizontal rotary track (107) mounted inside the detection chamber. The detection chamber (105) is equipped with a laser measuring instrument (108), and the AGV sample stage (103) has four layers. The detection cavity (105) is provided with a storage component (200), which includes a plurality of first measuring frames (201) disposed on the AGV sample stage (103), a second measuring frame (202) disposed on the first measuring frames (201), a telescopic collar (203) disposed between the first measuring frames (201) and the second measuring frames (202), and a measuring scale (204) disposed on the telescopic collar (203); and, The compaction assembly (300) includes a pressure block (301) disposed on the second measuring frame (202), a pressure cutting blade (302) disposed on the pressure block (301), and a pressure ring (303) disposed on the pressure cutting blade (302).

2. The 3D surround-type permafrost thawing expansion measuring device as described in claim 1, characterized in that: The drive unit (104) includes a drive motor (104a) installed in the operation terminal (101), a planar thrust bearing (104b) installed on the drive motor (104a), and a lifting guide rail (104c). The lifting platform (106) is connected to the lifting guide rail (104c) and the drive motor (104a).

3. The 3D surround-type permafrost thawing expansion measuring device as described in claim 1, characterized in that: The operating terminal (101) is equipped with a temperature control system (101a), which includes an evaporator (101b), a compressor (101c) connected to the evaporator (101b), and a cross-flow fan (101d) connected to the compressor (101c).

4. The 3D surround-type permafrost thawing expansion measuring device as described in claim 2, characterized in that: The AGV sample stage (103) is equipped with a pressure sensor and a power control device. The pressure sensor is used to detect whether the AGV sample stage (103) has a sample and send the relevant information to the operation terminal (101). After receiving the instruction from the operation terminal (101), the power control device drives the sample carrier to move along a preset path.

5. The 3D surround-type permafrost thawing expansion measuring device as described in claim 1, characterized in that: The first measuring frame (201) is provided with a snap ring (205) at its lower end. The first measuring frame (201) includes a plurality of splicing plates (201a) arranged in an array on the snap ring (205). Each splicing plate (201a) is provided with a sliding strip (201b) at its lower end. The upper surface of the snap ring (205) is provided with a plurality of sliding grooves (201c) that cooperate with the sliding strips (201b). A control disk (201d) is rotatably connected inside the snap ring (205). The control disk (201d) is not connected to the rotating shaft. A plurality of first protrusions are provided on the side wall of the control disk (201d). A second protrusion (201f) is provided at the rear end of each sliding strip (201b). The sliding strip (201b) is connected to the sliding groove (201c) in a cooperative manner. A friction pad is provided on the side wall of the sliding strip (201b).

6. The 3D surround-type permafrost thawing expansion measuring device as described in claim 1, characterized in that: The second measuring frame (202) and the first measuring frame (201) have the same structure. The telescopic collar (203) includes several interconnected arc plates (203a) and a sliding piece (203b) disposed between every two adjacent arc plates (203a).

7. The 3D surround-type permafrost thawing expansion measuring device as described in claim 6, characterized in that: The telescopic collar (203) has flanges on both sides, and the sliding piece (203b) has a mating edge that cooperates with the flanges.

8. The 3D surround-type permafrost thawing expansion measuring device as described in claim 1, characterized in that: The end of the pressing block (301) is provided with a insertion groove (404), and the upper end of the pressing cutting blade (302) is provided with a bending rod (405). The end of the bending rod (405) is provided with a mating insertion rod (406) that mates with the insertion groove (404).

9. The 3D surround-type permafrost thawing expansion measuring device as described in claim 8, characterized in that: The fitting rod (406) has a first locking hole (407), and the outer wall of the insertion groove (404) has a second locking hole (408) that mates with the first locking hole (407). A locking rod (409) is provided between the first locking hole (407) and the second locking hole (408).

10. The 3D surround-type permafrost thawing expansion measuring device as described in claim 8, characterized in that: The downward cutting blade (302) is detachably connected to the bending rod (405).

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