Rock sample preparation device and working method thereof

Abstract

The present application relates to the technical field of rock sample preparation, and provides a rock sample preparation device and a working method thereof, which comprises the following steps: a drill bit drills multiple rock samples from a rock block placed in a wet-dry cycle device at the same time; the wet-dry cycle device performs wet-dry cycles of different times on the rock block after the rock sample is drilled; a jack pushes the rock block after each wet-dry cycle to a band saw blade; the band saw blade cuts the rock block to separate the bottom of the rock block from the top rock block containing the rock sample; the slidable band saw blade separates the cut rock block part from the uncut rock block part after the jack pushes the rock sample to the hole passing sample plate; a clamp clamps the rock sample falling from the hole of the hole passing sample plate; a flatness detector detects the flatness of the top surface and the bottom surface of the rock sample; and a cutting and polishing saw blade polishes and cuts the top surface and the bottom surface of the rock sample when the flatness detection does not meet the requirements. The present application is not only more convenient to operate, but also reduces experimental errors, and can better predict the mechanical properties of the original rock.

Description

Technical Field

[0001] This invention relates to the field of rock sample preparation technology, and in particular to a rock sample preparation apparatus and its working method. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] Traditional methods for short-cycle wet-drying of rocks involve taking the required rock sample from the rock block, cutting and grinding it, and then placing it in experimental equipment to perform short-cycle wet-drying cycles on the standard rock sample. After experiencing different numbers of wet-drying cycles, the rock sample is taken out sequentially to conduct relevant mechanical experiments to obtain relevant mechanical parameters. The operation steps are cumbersome.

[0004] In addition, traditional methods have low sampling efficiency, do not take into account the real simulation of short-cycle "wet-dry" alternating environments, and have experimental errors.

[0005] Traditional cutting and grinding methods often produce rock samples that meet the requirements of mechanical experiments, but there are still some rock samples that do not meet the experimental requirements and have errors. Error control was not carried out before the experiment to ensure that all rock samples were ground to meet the requirements of mechanical experiments. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a rock sample preparation device and its working method. It belongs to the category of intelligent devices that integrate wet and dry drilling, making operation simpler and sampling more efficient. Furthermore, it utilizes intelligent detection equipment to determine whether the rock sample meets the geometric dimensions of a standard rock sample. Rock samples that do not meet the requirements are cut and polished, achieving a realistic simulation of the alternating wet and dry environment, reducing experimental errors, and enabling better prediction of the mechanical properties of undisturbed rocks.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] The first aspect of the present invention provides a rock sample preparation apparatus, comprising a wet-dry circulation device for placing rock blocks, a plurality of drill bits disposed directly above the wet-dry circulation device, a testing device disposed on one side of the wet-dry circulation device, a band saw blade, a sliding band saw blade and a perforated sample plate, and a jack disposed on the other side of the wet-dry circulation device; the testing device includes a clamp, a flatness tester and a cutting and grinding saw blade.

[0009] The drill bit is used to simultaneously drill multiple rock samples from a rock block.

[0010] The wet-dry cycle equipment is used to perform wet-dry cycles on the rock blocks after drilling rock samples a different number of times.

[0011] The jack is used to push the rock block after each wet-dry cycle toward the band saw blade.

[0012] The band saw blade is used to cut the rock block and separate the bottom of the rock block from the top rock block containing the rock sample;

[0013] The sliding band saw blade is used to separate the cut rock portion from the uncut rock portion after the rock sample is pushed to the perforated sample plate by the jack.

[0014] The clamp is used to clamp the rock sample that has fallen through the hole in the perforated template.

[0015] The flatness testing instrument is used to test the flatness of the top and bottom surfaces of the rock sample;

[0016] The cutting and grinding saw blade is used to grind and cut the top and bottom surfaces of a rock sample when the flatness test does not meet the requirements.

[0017] Furthermore, the top of the wet-dry circulation device is provided with a sliding plate along the sliding track, which is used to form an open space for the wet-dry circulation device before and during rock sampling, and to form a closed space for the wet-dry circulation device during wet-drying circulation.

[0018] Furthermore, the wet-dry cycle equipment includes a dust suction pipe for vacuuming the rock sample before drilling it.

[0019] Furthermore, the wet-dry circulation device includes a blower for controlling the temperature and airflow within the wet-dry circulation device.

[0020] Furthermore, the wet-dry circulation device includes a humidifier for controlling the humidity within the wet-dry circulation device.

[0021] Furthermore, the wet-dry circulation device includes an inlet pipe and an outlet pipe, used for wet-dry circulation of rock blocks after drilling rock samples.

[0022] Furthermore, a filter plate is provided at the bottom of the wet-dry circulation device for filtering the water discharged from the wet-dry circulation device.

[0023] Furthermore, a retractable support column is provided below the clamp to support the rock sample when it falls, and to move away from the rock sample after the clamp has clamped it.

[0024] Furthermore, the clamp clamps the rock sample by contracting the telescopic rings provided on the outer wall.

[0025] The second aspect of the present invention provides a method for operating a rock sample preparation apparatus as described in the first aspect, comprising the following steps:

[0026] The drill bit simultaneously extracts multiple rock samples from a rock block placed in a wet-dry circulation device.

[0027] The wet-dry circulation equipment performs wet-dry cycles on the rock blocks after drilling rock samples a different number of times;

[0028] The jack pushes the rock block after each wet-dry cycle toward the band saw blade;

[0029] The band saw blade cuts the rock block, separating the bottom of the rock block from the top rock block containing the rock sample;

[0030] The sliding band saw blade pushes the rock sample through the perforated sample plate after being pushed by the jack, separating the cut rock block from the uncut rock block;

[0031] The clamp secures the rock sample that has fallen through the perforated template opening;

[0032] The flatness tester is used to test the flatness of the top and bottom surfaces of the rock sample;

[0033] When the flatness of the cutting and grinding saw blade does not meet the requirements, the top and bottom surfaces of the rock sample are ground and cut.

[0034] Compared with the prior art, the beneficial effects of the present invention are:

[0035] This invention uses multiple drill bits to drill samples from the rectangular rock block simultaneously, improving sampling efficiency. Then, the sample remaining inside the rock block is subjected to short-cycle "wet-dry" cycles of different numbers using a wet-drying condition simulation device. This is an integrated intelligent device for drilling and wet-drying, which is simpler to operate and has high sampling efficiency.

[0036] After the experiment of this invention, the sweeping plate in the intelligent detection equipment is used to sweep the rock sample. The flatness detector is used to determine whether the sample meets the geometric dimensions of the standard rock sample. Rock samples that do not meet the requirements are cut and polished. This more accurately simulates the real environment of alternating wet and dry conditions of the bank slope rock under short-period fluctuations in reservoir water level during the operation of the pumped storage power station. This achieves a realistic simulation of the alternating wet and dry environment and reduces experimental errors. Attached Figure Description

[0037] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an improper limitation of the invention.

[0038] Figure 1 This is a three-dimensional view of a rock sample preparation apparatus according to Embodiment 1 of the present invention;

[0039] Figure 2 A cross-sectional view of a rock sample preparation apparatus according to Embodiment 1 of the present invention;

[0040] Figure 3 Motor diagram of Embodiment 1 of the present invention;

[0041] Figure 4 A diagram of the sampling device in Embodiment 1 of the present invention;

[0042] Figure 5 Diagram of the wet-dry cycle condition simulation device of Embodiment 1 of the present invention;

[0043] Figure 6 A diagram of the intelligent detection device according to Embodiment 1 of the present invention;

[0044] Figure 7 A diagram of the sampling device in Embodiment 1 of the present invention when neither the sweeping plate nor the cutting and grinding saw blade extends;

[0045] Figure 8 A diagram of a sampling device for when the sweeping plate extends but the cutting and grinding saw blade does not extend, according to Embodiment 1 of the present invention;

[0046] Figure 9 A diagram of a sampling device in Embodiment 1 of the present invention when the sweeping plate is not extended but the cutting and grinding saw blade is extended;

[0047] Figure 10 A flow diagram illustrating the working method of a rock sample preparation apparatus according to Embodiment 2 of the present invention. Detailed Implementation

[0048] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0049] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0050] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0051] In this invention, terms such as "fixed connection," "connected," and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can determine the specific meaning of these terms in this invention based on the specific circumstances, and they should not be construed as limitations on the invention.

[0052] Where there is no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0053] Example 1

[0054] Embodiment 1 of the present invention provides a rock sample preparation device.

[0055] This embodiment provides a rock sample preparation device for accurately simulating the slope rocks under short-period fluctuations in reservoir water level during the operation of a pumped storage power station.

[0056] This embodiment provides a rock sample preparation device. The device efficiently core-drills a rectangular rock block using its sampling equipment. Using multiple drill bits simultaneously improves sampling efficiency. The sample remaining inside the rock block is then subjected to short-cycle wet-drying cycles at different times using a wet-drying cycle simulation device. After the experiment, a sweeping plate in an intelligent detection device is used to sweep the sample to determine if it meets the geometric dimensions of a standard rock sample. Samples that do not meet system requirements are cut and polished until they meet the requirements before being output. This device is an integrated intelligent drilling and wet-drying device, making operation simpler. The wet-drying cycle simulation device more accurately simulates the real environment of alternating wet and dry conditions on the bank slope rocks during the operation of a pumped storage power station under short-cycle fluctuations in reservoir water level, achieving a realistic simulation of the alternating wet and dry environment and reducing experimental errors.

[0057] This embodiment provides a rock sample preparation apparatus, such as... Figure 1 As shown, it includes four main parts: motor 1, drilling equipment 2, wet-dry circulation equipment 3, and intelligent detection equipment 4, as well as six support columns of the same length, two upright columns of the same length, and two support legs of the same length. The length of the upright columns is less than the length of the support columns, and the length of the support legs is less than the length of the upright columns.

[0058] like Figure 3 As shown, motor 1 consists of a motor top cover 1(a), a lifting lug 1(b), a motor shaft 1(c), a motor housing 1(d), a high-voltage junction box 1(e), a connecting wire 1(f), a motor fixing bolt 1(g), and a motor switch 1(h). The motor top cover 1(a) is located at the top of the motor housing 1(d), and the lifting lug 1(b) is fixedly located on both sides of the motor top cover 1(a). The motor body is fixed inside the motor housing 1(d) by the motor fixing bolt 1(g), and the motor shaft 1(c) extends out of the motor housing 1(d). The high-voltage junction box 1(e) is located on one side of the motor housing 1(d). The motor switch 1(h) is located on one side of the motor housing 1(d), and motor 1 is connected to the wet-dry cycle equipment 3 via the connecting wire 1(f). Motor 1 is a common generator motor.

[0059] like Figure 2 and Figure 4 As shown, the drilling equipment 2 consists of a drill bit extension rod 2(a), a drill bit 2(b), a jack 2(c), a band saw blade 2(d), a sliding rail 2(e) (first sliding rail), a first slidable band saw blade 2(f), a control switch 2(g) for the sampling equipment, and a sample plate 2(h). Each of the six support columns is equipped with a sliding rail 2(e). The six support columns include four main support columns and two auxiliary support columns. The tops of the four main support columns are fixed to the four corners of the top plate. Multiple drill bit extension rods 2(a) are fixedly installed on the bottom surface of the top plate, and each drill bit extension rod 2(a) is connected to a drill bit 2(b) at its bottom end. Two main support columns and two auxiliary support columns are slidably connected to two side plates via sliding rail 2(e). (Specifically, one main support column and one auxiliary support column are slidably connected to one side plate via sliding rail 2(e). The top and bottom ends of the two side plates, as well as the side closest to the drill bit 2(b), are connected to connecting plates, forming a rectangular box. A humidifier 3(j) and a jack 2(c) are installed on the connecting plate opposite the opening of the rectangular box (the connecting plate opposite the opening of the rectangular box is a second slidable band saw blade 3(g)), both of which act on the inside of the wet-dry circulation equipment 3. The two main support columns away from the rectangular box are slidably connected to the first slidable band saw blade 2(f) via sliding rail 2(e). A limiting plate, band saw blade 2(d), and a bearing plate are installed between the two main support columns and the two upright columns of the first slidable band saw blade 2(f). The limiting plate, band saw blade 2(d), and bearing plate are parallel. The bearing plate is on the same plane as the bottom plate of the box. The limiting plate and the sliding plate 3(a) are on the same plane and have the same width. The band saw blade 2(d) is located between the limiting plate and the bearing plate. The two main support columns and the two upright columns of the first slidable band saw blade 2(f) are fixedly connected to the two sides of the template plate 2(h). The bottom of the template plate 2(h) is flush with the plane where the band saw blade 2(d) is located, and the top is flush with the plane where the limiting plate is located. The two template plates, the band saw blade 2(d), and the limiting plate form a rectangular frame. The template plate is the shortest distance from the band saw blade 2(d) to the limiting plate, and the length of the template plate is greater than the length of the band saw blade 2(d). Perforated template plates 2(h) are fixed to the two columns. The perforated template plates 2(h) and the band saw blade 2(d) are located on the same plane and are fixedly connected to the template plates 2(h) on both sides of the columns. A control switch 2(g) for the sampling equipment is installed on the template plate 2(h). The control switch 2(g) for the sampling equipment is connected to the drill bit extension rod 2(a) and the drill bit 2(b), etc., to control the start and stop of the equipment.

[0060] like Figure 5As shown, the wet-dry circulation device 3 consists of a sliding plate 3(a), a suction pipe 3(b), a filter plate 3(c), a control switch 3(d) for the wet-dry circulation device, a blower 3(e), a sliding rail 3(f) (a second sliding rail), a first slidable band saw blade 2(f), a second slidable band saw blade 3(g), a water outlet pipe 3(h), a water inlet pipe 3(i), and a humidifier 3(j). Specifically, two box plates are fixed to the sides of the four main support columns at a certain distance below the drill bit 2(b). The box plates are perpendicular to the plane of the top plate and are fixed to the inner side of the main support columns. A bottom plate is fixed to the bottom of the box plate. A sliding rail 3(f) is provided on the top of the box plate, and the sliding plate 3(a) is slidably mounted on the top of the box plate via the sliding rail 3(f). The first slidable band saw blade 2(f) slides along the sliding track to its bottom flush with the base plate. When the side plates of the rectangular box slide along the sliding track to their bottom flush with the base plate, the connecting plate (second slidable band saw blade 3(g)), box plate, base plate, first slidable band saw blade 2(f), and sliding plate 3(a) of the rectangular box form a sealed box. The inlet of the suction pipe 3(b) is located at the bottom of the box, and the outlet is located outside the box. The filter plate 3(c) is fixed to four support columns and positioned directly below the bottom surface of the box. The blower 3(e) is located inside the box. The humidifier 3(j) is used to humidify the internal environment of the box. The water outlet pipe 3(h) and water inlet pipe 3(i) are connected. The control switch 3(d) of the wet-dry circulation equipment is connected to the blower 3(e), humidifier 3(j), and jack 2(c), etc., and is used to control the opening and closing of the equipment.

[0061] like Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, the intelligent inspection device 4 consists of a clamp 4(a), a telescopic ring 4(b), a support column 4(c), a sliding plate 4(d), a sweeping plate protective shell 4(e), a sliding rail 4(f) (the third sliding rail), a wedge-shaped connecting support column 4(g), a buffer pad 4(h), a flatness detector 4(i), a sweeping plate 4(j), and a cutting and grinding saw blade 4(k). Specifically, two crossbars are fixedly connected between the two columns and the two support legs. A sliding rail 4(f) is installed on the crossbars, and the sliding plate 4(d) is slidably connected to the two crossbars via the sliding rail 4(f). Several (3) support columns 4(c) are fixedly installed on the top of the sliding plate 4(d), and the top of the extended support column 4(c) is flush with the bottom of the clamp 4(a). The clamp 4(a) is fixed to the support rod via the wedge-shaped connecting support column 4(g), and the clamp 4(a) is a cylinder composed of two identical objects. A telescopic ring 4(b) is provided on the outer side of the clamp. Several (3) support rods are fixedly provided on the top of the sliding plate 4(d), and a cutting and grinding saw blade 4(k) is provided in the middle and at the top of the support rods. The cutting and grinding saw blade 4(k) in the middle is flush with the bottom end of the clamp 4(a), and the cutting and grinding saw blade 4(k) in the top is flush with the top end of the clamp 4(a). A hollow sweeping plate protective shell 4(e) with an opening on one side is provided below the cutting and grinding saw blade 4(k) in the middle, and a hollow sweeping plate protective shell 4(e) with an opening on one side is provided above the cutting and grinding saw blade 4(k) in the top. Both the sweeping plate 4(j) and the cutting and grinding saw blade 4(k) can rotate around the support rods. The sweeping plate 4(j) can rotate into the sweeping plate protective shell 4(e). A flatness detector is provided on the sweeping plate 4(j). To protect the sample, a buffer pad 4(g) is provided at the top of the support 4(c).

[0062] Compared with traditional devices, the device of this invention efficiently core-drills the rectangular rock block using its sampling equipment. The simultaneous drilling with multiple drill bits improves sampling efficiency. The sample remaining inside the rock block is then subjected to short-cycle wet-drying cycles at varying numbers using a wet-drying cycle simulation device. After the experiment, a sweeping plate in the intelligent detection device is used to determine if the sample meets the geometric dimensions of the standard rock sample. Samples that do not meet the system requirements are cut and polished until they meet the requirements before being output. Furthermore, this device is an integrated intelligent drilling and wet-drying device, making operation simpler. The wet-drying cycle simulation device more accurately simulates the real environment of alternating wet and dry conditions on the bank slope rocks during the operation of a pumped storage power station under short-cycle fluctuations in reservoir water levels. This realistic simulation of the alternating wet and dry environment reduces experimental errors and allows for better prediction of the mechanical properties of the undisturbed rock.

[0063] Example 2

[0064] Embodiment 2 of the present invention provides a method for operating a rock sample preparation apparatus as described in Embodiment 1, such as... Figure 10 As shown, it includes the following steps:

[0065] Step 1: Obtain the original rock of the bank slope under the short-period fluctuation of reservoir water level during the operation of the pumped storage power station. Use a rock cutting machine to cut the rock into rectangular blocks with a height of 150mm. Slide the rectangular box on the right side of the wet-dry cycle simulation device (wet-dry cycle device) 3 to the top and place the rectangular rock blocks in the wet-dry cycle device 3. Slide the upper sliding plate 3(a) of the wet-dry cycle device 3 to the far right. Add coolant to the wet-dry cycle simulation device 3. Turn on the blower 3(e) to control the temperature and turn on the suction pipe 3(b) to vacuum. According to the required number of rock samples, turn on the control switch 2(g) of the sampling device 2 and start the drill bit 2(b) to start core drilling. The drilling device 2 drills a 50mm×100mm cylindrical rock core from the intact rock block. The bottom of the cylindrical rock core is still connected to the rectangular rock block.

[0066] Step 2: Using the drilling device 2 of the invention, multiple cylindrical rock cores are drilled simultaneously in the rectangular rock block. The distance between the sample and each edge of the rock block is 2.5 cm, and the distance between the samples is 3 cm.

[0067] Step 3: Without removing the rock sample from inside the rectangular rock block, the wet-dry cycle simulation device 3 in the invention is used. After core drilling, the rectangular box on the right side is slid to the bottom, and the upper sliding plate 3(a) of the wet-dry cycle simulation device 3 is slid to the leftmost side, closing the entire wet-dry cycle simulation device 3. When the rectangular box slides to the bottom, the jack 2(c) and humidifier 3(j) in the sampling device 2 are slid down along the sliding track to the right side of the wet-dry cycle simulation device 3. The temperature and wind speed are controlled by the blower 3(e), and the humidity is controlled by the humidifier 3(j). The entire rock block is subjected to short-cycle "wet-dry" cycles of different numbers of times through the inlet pipe 3(h) and outlet pipe 3(i). After each cycle, the water can be reused by the filter plate 3(c). Short-cycle "wet-dry" cycles of different numbers of times are performed, such as 0, 1, 2, 4, 6, 8, and 11 times.

[0068] Step 4: After performing one short-cycle "wet-dry" cycle on the rectangular rock block, slide the rectangular box on the right and the first sliding band saw blade 2(f) on the left to the top of the sliding wet-dry cycle simulation device 3. Use the jack 2(c) to push the rock block a certain distance. At the same time, the left band saw blade 2(d) of the sampling device 2 starts to cut, separating the bottom of the rock sample from the rock block. After moving a certain distance, the first sliding band saw blade 2(f) along the sliding track 2(e) cuts the rock block. Three rock samples are obtained from the interior of the obtained rock block. Continue to push to the perforated sample plate 2(h). The rock sample falls from the bottom of the perforated sample plate 2(h).

[0069] Step 5: After removing the waste material at the bottom, the three obtained rock samples (50mm × 100mm) enter the leftmost intelligent detection device 4. The telescopic ring 4(b) begins to tighten until the clamp holds the rock sample. The support column 4(c) retracts downwards until its top is flush with the sliding plate 4(d). The intelligent detection device 4 is activated using the control panel. The sweeping plate 4(j) simultaneously begins the first sweep of the three samples. The flatness detector 4(i) identifies whether the upper and lower surfaces of the rock sample meet the standard rock sample requirements. If the scanning and detection results meet the system requirements (error less than 1mm), the sweeping is stopped and the sweeping plate is retracted into the sweeping plate protective shell 4(e). Otherwise, the cutting and grinding saw blade 4(k) is activated to grind and cut the rock sample surface that does not meet the system requirements. The second sweep is then performed until the surface meets the system requirements, at which point the sweeping is stopped. The steps are as follows. Figure 7 As shown, the support 4(c) extends to its original position (extending to the top parallel to the bottom of the clamp 4(a)), the entire sliding plate 4(d) slides along the sliding track 4(f) to the leftmost end, and the expansion and contraction ring 4(b) can be expanded and contracted to remove it. What is obtained is the standard rock sample after several short-cycle "wet-dry" cycles.

[0070] Step 6: Using the device of this invention, perform short-cycle "wet-dry" cycles on the rectangular rock block at different numbers of times (1, 2, 4, 6, 8, 11). Take out three standard rock samples after several wet-dry cycles each time. Repeat steps 4 and 5 to obtain standard rock samples under short-cycle "wet-dry" cycles of different numbers, which is convenient for carrying out rock mechanics experimental research.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A rock sample preparation apparatus, characterized in that: It includes a wet-dry circulation device for placing rock blocks, several drill bits set directly above the wet-dry circulation device, a detection device set on one side of the wet-dry circulation device, band saw blades, sliding band saw blades and perforated templates, and a jack set on the other side of the wet-dry circulation device; the detection device includes a clamp, a flatness detector and a cutting and grinding saw blade. The drill bit is used to simultaneously drill multiple rock samples from a rock block. The wet-dry cycle equipment is used to perform wet-dry cycles on the rock blocks after drilling rock samples a different number of times. The jack is used to push the rock block after each wet-dry cycle toward the band saw blade. The band saw blade is used to cut the rock block and separate the bottom of the rock block from the top rock block containing the rock sample; The sliding band saw blade is used to separate the cut rock portion from the uncut rock portion after the rock sample is pushed to the perforated sample plate by the jack. The clamp is used to clamp the rock sample that has fallen through the hole in the perforated template. The flatness testing instrument is used to test the flatness of the top and bottom surfaces of the rock sample; The cutting and grinding saw blade is used to grind and cut the top and bottom surfaces of a rock sample when the flatness test does not meet the requirements.

2. The rock sample preparation apparatus as described in claim 1, characterized in that: The top of the wet-dry circulation device is provided with a sliding plate along a sliding track, which is used to form an open space before and during rock sampling, and to form a closed space during wet-dry circulation.

3. The rock sample preparation apparatus as described in claim 1, characterized in that: The wet-dry cycle equipment includes a dust suction pipe, which is used to vacuum the rock sample before drilling the rock block.

4. The rock sample preparation apparatus as described in claim 1, characterized in that: The wet-dry circulation device includes a blower for controlling the temperature and airflow within the device.

5. The rock sample preparation apparatus as described in claim 1, characterized in that: The wet-dry circulation equipment includes a humidifier for controlling the humidity within the equipment.

6. The rock sample preparation apparatus as described in claim 1, characterized in that: The wet-dry circulation equipment includes an inlet pipe and an outlet pipe, which are used to perform wet-dry circulation on the rock blocks after drilling rock samples.

7. The rock sample preparation apparatus as described in claim 1, characterized in that: The bottom of the wet-dry circulation device is equipped with a filter plate for filtering the water discharged from the device.

8. The rock sample preparation apparatus as described in claim 1, characterized in that: The clamp is equipped with a retractable support column at the bottom, which is used to support the rock sample when it falls, and to move away from the rock sample after the clamp has clamped it.

9. The rock sample preparation apparatus as described in claim 1, characterized in that: The clamp holds the rock sample by contracting the telescopic rings on its outer wall.

10. The method of operating a rock sample preparation apparatus according to any one of claims 1-9, characterized in that: Includes the following steps: The drill bit simultaneously extracts multiple rock samples from a rock block placed in a wet-dry circulation device. The wet-dry circulation equipment performs wet-dry cycles on the rock blocks after drilling rock samples a different number of times; The jack pushes the rock block after each wet-dry cycle toward the band saw blade; The band saw blade cuts the rock block, separating the bottom of the rock block from the top rock block containing the rock sample; The sliding band saw blade pushes the rock sample through the perforated sample plate after being pushed by the jack, separating the cut rock block from the uncut rock block; The clamp secures the rock sample that has fallen through the perforated template opening; The flatness tester is used to test the flatness of the top and bottom surfaces of the rock sample; When the flatness of the cutting and grinding saw blade does not meet the requirements, the top and bottom surfaces of the rock sample are ground and cut.

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