A device and method for installing a laboratory test sample of a reservoir drawdown zone accumulation body

Abstract

The application is suitable for the technical field of reservoir bank slope prevention and provides a reservoir drawdown zone accumulation body indoor experiment sample mounting device and method, which comprises a bottom support and further comprises: a first hydraulic telescopic rod and a second hydraulic telescopic rod, both of which are fixedly connected to the bottom support; a vertical counterforce support, which is fixedly connected to the movable ends of the first hydraulic telescopic rod and the second hydraulic telescopic rod. The device directly realizes the functions of sample preparation and installation, avoids disturbance collapse of large-size accumulation body samples caused by transportation, adopts a rubber film supporting device and a film sleeving method, greatly reduces the disturbance of the accumulation body samples, enables the samples to be smoothly installed, and provides a guarantee for the accuracy of the physical (mechanical) parameters tested in subsequent tests, and through the setting of a demolding telescopic device, the device can statically disassemble the inner sample preparation mold, and compared with the traditional technology, the device can effectively reduce the disturbance of the samples.

Description

Technical Field

[0001] This invention belongs to the field of reservoir bank slope protection technology, and particularly relates to an installation device and method for indoor experimental samples of reservoir drawdown zone deposits. Background Technology

[0002] In studying the deformation and failure mechanism of the drawdown zone deposits on reservoir slopes during operation, it is necessary to test relevant physical (mechanical) parameters of the deposits. However, in the indoor physical (mechanical) experiments on the drawdown zone deposits during reservoir operation, the sample size of the experimental deposits (generally a 300*300*400mm quadrangular prism) is much larger than the sample size of conventional soil triaxial tests (a cylinder with a diameter of 50mm × a height of 100mm), and its mass is usually over 110kg. Figure 1 As shown, this is the test specimen, and σ1, σ2 and σ3 are the external pressures that the specimen must withstand during the experiment.

[0003] During the sample installation process, the traditional manual sample loading method is usually adopted. However, this method has the following problems: On the one hand, during the transportation process, excessive disturbance can easily cause the sample to collapse, which will lead to sample installation failure. On the other hand, when carrying out this test, a rubber membrane is required to seal and isolate the test. However, using a rubber membrane to cover the sample also causes great disturbance to the sample, making sample installation difficult and affecting the accuracy of subsequent test parameters.

[0004] To avoid the aforementioned technical problems, it is indeed necessary to provide an installation device and method for indoor experimental specimens of reservoir drawdown zone deposits to overcome the deficiencies in the prior art. Summary of the Invention

[0005] The purpose of this invention is to provide an installation device and method for indoor experimental samples of reservoir drawdown zone deposits, aiming to solve the problem of difficult manual installation.

[0006] This invention is implemented as follows: an installation device for indoor experimental samples of reservoir drawdown zone deposits, including a bottom support, and further comprising: Hydraulic telescopic rod No. 1 and hydraulic telescopic rod No. 2 are both fixedly connected to the bottom bracket; A vertical reaction force support is fixedly connected to the movable ends of hydraulic telescopic rod No. 1 and hydraulic telescopic rod No. 2; during the sample preparation stage, the vertical reaction force support facilitates the installation and disassembly of the sample. The No. 3 hydraulic telescopic rod is fixedly connected to the vertical reaction support, and a pressure plate is fixedly connected to the movable end of the No. 3 hydraulic telescopic rod. Through the No. 3 hydraulic telescopic rod, the pressure plate can move up and down to achieve the function of compressing and consolidating the sample. The pressure plate can be used for static ballast in the sample preparation process of the accumulator sample to make the sample meet the consolidation requirements of the specification. A base, which is fixedly mounted on a bottom bracket; The lower pressure head is installed on the top of the base and is used to connect the bottom part of the rubber diaphragm, that is, the bottom part of the rubber diaphragm is to be fitted onto the lower pressure head. A rubber membrane support mold is installed on a base, and the lower pressure head is located inside the rubber membrane support mold. The rubber membrane support mold can only be removed after the sample preparation in the inner sample preparation mold is completed. Its function is to prevent the rubber membrane from being damaged during the sample preparation process. A rubber membrane is disposed inside a rubber membrane support mold, with its lower end fitted onto a lower pressure head and locked with a first hoop. The upper edge of the rubber membrane is reversed to the upper port of the rubber membrane support mold and locked with a second hoop. An inner sample preparation mold is installed inside a rubber membrane. The bottom of the inner sample preparation mold is installed on a lower pressure head. A second hoop is provided at both the upper and lower ends of the inner sample preparation mold. A demolding telescopic device is installed inside the inner sample mold and is used to disassemble the inner sample mold. After the inner sample preparation mold is removed, the upper pressure head is installed on top of the sample. At this time, the rubber diaphragm can be placed on the upper pressure head and locked with the first hoop. The upper pressure head is used to seal the upper end of the rubber diaphragm, which facilitates the application of vertical pressure in subsequent tests.

[0007] A further technical solution is provided, wherein the first hydraulic telescopic rod includes a first cylinder and a first support rod, one end of the first support rod being slidably connected to the inside of the first cylinder; the second hydraulic telescopic rod includes a second cylinder and a second support rod; and the third hydraulic telescopic rod includes a third cylinder and a third support rod. The structures of the second and third hydraulic telescopic rods are the same as those of the first hydraulic telescopic rod, and all of them can drive the support rod to move by supplying oil to the cylinder.

[0008] A further technical solution also includes an air compressor, which is installed on one side of the bottom support. The base is provided with a lower exhaust port, and the air compressor is connected to the lower exhaust port through an air extraction pipe. The upper surface of the lower pressure head is provided with a filter screen, which is mesh-shaped and its pore size is set according to the test requirements, with a pore size of 2mm. Due to the requirements of subsequent tests, the lower pressure head is provided with a pipe communicating with the filter screen, and the pipe is connected to the lower exhaust port. The side of the rubber membrane support mold is provided with an upper exhaust port.

[0009] A further technical solution is that the demolding telescopic device includes: The protective outer box is located inside the inner sample preparation mold. Its function is to protect the internal structure and prevent interference during operation. A vertical tie rod, which is rotatably connected to the protective outer box; A circular turntable is fixedly connected to the top of the vertical tie rod, facilitating horizontal rotation. The telescopic rod outer cylinder is rotatably connected to the inside of the protective outer box; Two inner telescopic rods are respectively inserted into both ends of the outer telescopic rod cylinder. The inner wall of the outer telescopic rod cylinder is provided with nut threads, and the part of the inner telescopic rod located inside the outer telescopic rod cylinder is also provided with bolt threads. When the outer telescopic rod cylinder rotates, the horizontal extension and retraction function of the inner telescopic rod is realized through the engagement and rotation between the bolt threads and the nut threads. A large spiral device is fixedly connected to the outer cylinder of the telescopic rod. Rotating this device can drive the outer cylinder of the telescopic rod to rotate. The small spiral device is fixedly connected to the middle of the vertical tie rod. The small spiral device and the large spiral device are orthogonally engaged. Rotating the vertical tie rod can drive the large spiral device to rotate, thereby realizing the free extension and retraction of the inner rod of the telescopic rod. Two top-mounted wall-mounted mechanisms are located at opposite ends of the inner rods of the two telescopic rods. After the demolding telescopic device is installed, the two top-mounted wall-mounted mechanisms are close to the inner wall of the upper end of the inner sample mold. When the inner rods of the telescopic rods extend outward, the top-mounted wall-mounted mechanisms can support and disassemble the inner sample mold.

[0010] A further technical solution is that the upper end of the inner sample mold is provided with a hook, and the bottom of the pressure plate is provided with a hook hole for the hook to pass through, so as to facilitate the lifting and disassembly of the inner sample mold.

[0011] The method for mounting a sample using this device includes the following steps: S1: Clean the base and the lower pressure head, install them on the bottom bracket, and place the filter on the surface of the lower pressure head; S2: Place the prepared rubber membrane onto the lower pressure head (the lower edge of the rubber membrane 50mm should be flipped up and locked with the first hoop). Then place the rubber membrane support mold on the base, flip the upper edge of the rubber membrane down to the upper port of the rubber membrane support mold, and lock it with the first hoop. S3: Use an air compressor to evacuate the air between the rubber membrane support mold and the rubber membrane, so that the rubber membrane can effectively adhere to the rubber membrane support mold; S4: Install the inner sample mold in the rubber membrane, place its bottom end on the lower pressure head, and lock the upper and lower ends of the inner sample mold with the second hoop. S5: Lay the first layer of the accumulator sample in the inner sample preparation mold and compact it with a pressure plate until the target thickness of each layer is about 51mm. After the first layer is compacted, roughen the surface of the compacted sample to ensure that each layer of the sample interlocks with each other and to ensure the integrity of the sample. Then place the next layer and compact it. Repeat these steps for each layer until the total height of 400mm is reached. S6: Remove the second hoop at the top and bottom of the inner sample mold, operate the demolding telescopic device to open the inner sample mold, and then separate the inner sample mold from the sample. S7: Use the pressure plate on the vertical reaction support to lift the inner sample mold, so that the sample can be separated from the inner sample mold; S8: Install the upper pressure head on the upper end of the sample and use the first hoop to secure and seal the rubber diaphragm and the upper pressure head; S9: Connect the exhaust pipe to the lower exhaust port, use an air compressor to evacuate and solidify the sample, and at the same time remove the rubber membrane support mold. The sample preparation and installation are now complete.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This device directly realizes the sample preparation and installation functions, avoiding the disturbance and collapse of large-sized samples due to handling during the accumulation process; 2. The rubber membrane support device and membrane sleeve method used in this device greatly reduce the disturbance of the accumulated specimens, making the specimens easy to install, and at the same time ensuring the accuracy of the physical (mechanical) parameters tested in subsequent tests. 3. The device is equipped with a demolding telescopic device, which allows the inner sample preparation mold to be statically disassembled. Compared with traditional technology, this device can effectively reduce the disturbance of the sample. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the experimental stacked sample of the present invention; Figure 2 This is a front view structural diagram of the present invention; Figure 3This is a schematic diagram of the installation process of the present invention; Figure 4 This is a frontal cross-sectional view of the present invention. Figure 5 This is a schematic diagram of the rubber membrane structure of the present invention; Figure 6 This is a detailed drawing of the pressure head of the present invention; Figure 7 This is a detailed drawing of the upper pressure head of the present invention; Figure 8 The present invention relates to a film-removing telescopic device; Figure 9 This is a flowchart illustrating the installation process of the present invention.

[0014] In the attached diagram: 1. Air compressor; 2. Suction pipe; 3. Rubber diaphragm; 4. Vertical reaction support; 501. Cylinder No. 1; 502. Cylinder No. 2; 503. Cylinder No. 3; 504. Support rod No. 1; 505. Support rod No. 2; 506. Support rod No. 3; 6. Upper pressure head; 7. First hoop; 8. Base; 9. Bottom support; 10. Lower pressure head; 101. Filter screen; 11. Lower exhaust port; 12. Pressure... 13. Demolding telescopic device; 131. Circular turntable; 132. Large spiral device; 133. Small spiral device; 134. Telescopic rod outer cylinder; 135. Telescopic rod inner rod; 136. Vertical tie rod; 137. Top-mounted wall-mounted mechanism; 138. Protective outer box; 14. Sample; 15. Inner sample preparation mold; 16. Rubber membrane support mold; 17. Hook; 18. Second hoop; 19. Upper vent. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0016] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0017] like Figure 1-8 As shown, this invention provides an installation device for indoor experimental samples of reservoir drawdown zone deposits, including a bottom support 9, and further comprising: Hydraulic telescopic rod No. 1 and hydraulic telescopic rod No. 2 are both fixedly connected to the bottom bracket 9; Vertical reaction support 4 is fixedly connected to the movable ends of hydraulic telescopic rod No. 1 and hydraulic telescopic rod No. 2; during the sample preparation stage, vertical reaction support 4 facilitates sample installation and removal. The No. 3 hydraulic telescopic rod is fixedly connected to the vertical reaction support 4, and the movable end of the No. 3 hydraulic telescopic rod is fixedly connected to the pressure plate 12. Through the No. 3 hydraulic telescopic rod, the pressure plate 12 can move up and down to achieve the function of compressing and consolidating the sample 14. The pressure plate 12 can be used for static ballast during the sample preparation process of the accumulator sample 14 to make the sample 14 meet the consolidation requirements of the specification. Base 8, which is fixedly mounted on bottom bracket 9; The lower pressure head 10 is installed on the top of the base 8. The lower pressure head 10 is used to connect the bottom part of the rubber diaphragm 3, that is, the bottom part of the rubber diaphragm 3 is to be fitted onto the lower pressure head 10. A rubber membrane support mold 16 is mounted on a base 8, and the lower pressure head 10 is located inside the rubber membrane support mold 16. The rubber membrane support mold 16 can only be removed after the sample 14 in the inner sample preparation mold 15 is prepared. Its function is to prevent the rubber membrane 3 from being damaged during the sample preparation process. A rubber membrane 3 is disposed inside a rubber membrane support mold 16, with its lower end fitted onto a lower pressure head 10 and locked with a first hoop 7. The upper edge of the rubber membrane 3 is reversed to the upper port of the rubber membrane support mold 16 and locked with a second hoop 18. An inner sample preparation mold 15 is installed inside the rubber membrane 3. The bottom of the inner sample preparation mold 15 is installed on the lower pressure head 10. A second hoop 18 is provided at both the upper and lower ends of the inner sample preparation mold 15. A demolding telescopic device 13 is installed inside the inner sample mold 15 and is used to disassemble the inner sample mold 15. After the inner sample preparation mold 15 is removed, the upper pressure head 6 is installed on the top of the sample 14. At this time, the rubber membrane 3 can be sleeved on the upper pressure head 6 and locked with the first hoop 7. The upper pressure head 6 is used to seal the upper end of the rubber membrane 3, so as to facilitate the application of vertical pressure in subsequent tests.

[0018] In embodiments of the present invention, such as Figure 2 As shown, in a preferred embodiment of the present invention, the first hydraulic telescopic rod includes a first cylinder 501 and a first support rod 504, one end of the first support rod 504 being slidably connected inside the first cylinder 501; the second hydraulic telescopic rod includes a second cylinder 502 and a second support rod 505; and the third hydraulic telescopic rod includes a third cylinder 503 and a third support rod 506. The structures of the second and third hydraulic telescopic rods are the same as those of the first hydraulic telescopic rod, and both can move the support rod by supplying oil to the cylinders.

[0019] In embodiments of the present invention, such as Figure 1-4 and Figure 6 As shown, in a preferred embodiment of the present invention, an air compressor 1 is also included. The air compressor 1 is disposed on one side of the bottom support 9. A lower exhaust port 11 is provided on the base 8. The air compressor 1 is connected to the lower exhaust port 11 through an air extraction pipe 2. A filter screen 101 is provided on the upper surface of the lower pressure head 10. The filter screen 101 is mesh-shaped, and its aperture is set according to the test requirements. The aperture is 2mm. Due to the requirements of subsequent tests, a pipe communicating with the filter screen 101 is provided inside the lower pressure head 10. The pipe is connected to the lower exhaust port 11. An upper exhaust port 19 is provided on the side of the rubber membrane support mold 16.

[0020] After the rubber membrane 3 is installed, the air extraction pipe 2 is connected to the upper exhaust port 19. The air compressor 1 extracts the air between the rubber membrane 3 and the rubber membrane support mold 16 through the air extraction pipe 2, so that the rubber membrane 3 is close to the inner wall of the rubber membrane support mold 16. On the one hand, this facilitates the installation of the inner sample preparation mold 15, and on the other hand, it prevents the rubber membrane 3 from disturbing the sample 14 during the sample preparation process.

[0021] After the sample 14 is pressed, the air extraction pipe 2 is connected to the lower exhaust port 11, and the air compressor 1 extracts the air inside the rubber membrane 3, so that the sample 14 can be completely fixed and molded.

[0022] In embodiments of the present invention, such as Figure 3 and Figure 8 As shown, in a preferred embodiment of the present invention, the demolding telescopic device 13 includes: The protective outer box 138 is disposed inside the inner sample preparation mold 15, and its function is to protect the internal structure and ensure that the operation is not disturbed. A vertical pull rod 136 is rotatably connected to the protective outer box 138; A circular turntable 131 is fixedly connected to the top of the vertical pull rod 136, which facilitates horizontal rotation operation. The telescopic rod outer cylinder 134 is rotatably connected to the inside of the protective outer box 138; Two inner telescopic rods 135 are respectively inserted into both ends of the outer telescopic rod cylinder 134. The inner wall of the outer telescopic rod cylinder 134 is provided with nut threads, and the portion of the inner telescopic rod 135 located inside the outer telescopic rod cylinder 134 is also provided with bolt threads. When the outer telescopic rod cylinder 134 rotates, the horizontal extension and retraction function of the inner telescopic rod 135 is realized through the engagement and rotation between the bolt threads and the nut threads. A large spiral device 132 is fixedly connected to the outer cylinder 134 of the telescopic rod. Rotating this device can drive the outer cylinder 134 of the telescopic rod to rotate. Preferably, the large spiral device 132 is a worm gear. The small helical device 133 is fixedly connected to the middle of the vertical tie rod 136. The small helical device 133 is orthogonally engaged with the large helical device 132. Rotating the vertical tie rod 136 can drive the large helical device 132 to rotate, thereby realizing the free extension and retraction of the inner rod 135 of the telescopic rod. Preferably, the small helical device 133 is a worm gear. Two top-mounted wall-mounted mechanisms 137 are located at opposite ends of the inner rods 135 of the two telescopic rods. After the demolding telescopic device 13 is installed, the two top-mounted wall-mounted mechanisms 137 are close to the inner wall of the upper end of the inner sample mold 15. When the inner rods 135 of the telescopic rods extend outward, the top-mounted wall-mounted mechanisms 137 can support and disassemble the inner sample mold 15.

[0023] After the inner sample preparation mold 15 completes sample preparation, the demolding telescopic device 13 is installed inside the inner sample preparation mold 15. Then, the circular turntable 131 is rotated, which drives the vertical pull rod 136 and the small spiral device 133 to rotate. The small spiral device 133 drives the large spiral device 132 to rotate, and the large spiral device 132 drives the telescopic rod outer cylinder 134 to rotate. The telescopic rod outer cylinder 134 drives the two telescopic rod inner rods 135 to extend outward, so that the top-mounted wall-adhesive mechanism 137 is placed against the inner wall of the inner sample preparation mold 15, thereby separating the inner wall of the inner sample preparation mold 15 from the sample 14 and reducing the disturbance of the inner sample preparation mold 15 to the sample 14.

[0024] In embodiments of the present invention, such as Figure 2 and Figure 4 As shown, in a preferred embodiment of the present invention, the upper end of the inner sample mold 15 is provided with a hook 17, and the bottom of the pressure plate 12 is provided with a fishing hole for the hook 17 to pass through, so as to facilitate the lifting and disassembly of the inner sample mold 15.

[0025] After sample 14 is completed, the demolding telescopic device 13 is used to separate the inner sample mold 15 from the sample 14. Then, the third hydraulic telescopic rod drives the pressure plate 12 to descend, so that the hook 17 passes through the fishing hole and is fixed on the lower pressure plate 12. Then, the third hydraulic telescopic rod drives the inner sample mold 15 to rise, and the first and second hydraulic telescopic rods drive the vertical reaction support 4 to rise, thereby removing the inner sample mold 15 from the rubber membrane 3.

[0026] like Figure 9 As shown, the sample 14 mounting method includes the following steps: S1: Clean the base 8 and the lower pressure head 10, install them on the bottom bracket 9, and place the filter screen 101 on the surface of the lower pressure head 10; S2: Place the prepared rubber membrane 3 onto the lower pressure head 10 (the lower edge of the rubber membrane 350mm should be flipped up and locked with the first hoop 7, then place the rubber membrane support mold 16 on the base 8, and flip the upper edge of the rubber membrane 3 down to the upper port of the rubber membrane support mold 16, and lock it with the first hoop 7. S3: Use air compressor 1 to evacuate the air between rubber membrane support mold 16 and rubber membrane 3, so that rubber membrane 3 can effectively adhere to rubber membrane support mold 16. S4: Install the inner sample mold 15 in the rubber membrane 3, place its bottom end on the lower pressure head 10, and lock the upper and lower ends of the inner sample mold 15 with the second hoop 18. S5: The first layer of the accumulator sample 14 is laid in the inner sample preparation mold 15 and compacted by the pressure plate 12 until the target thickness of each layer is about 51mm. After the first layer is compacted, the surface of the compacted sample 14 is roughened to ensure that each layer of sample 14 interlocks with each other and to ensure the integrity of sample 14. Then the next layer is placed and compacted. These steps are repeated for each layer until the total height of 400mm is reached. S6: Remove the second hoop 18 at the upper and lower ends of the inner sample mold 15, operate the demolding telescopic device 13, so that the demolding telescopic device 13 can open the inner sample mold 15, thereby separating the inner sample mold 15 from the sample 14. S7: Use the pressure plate 12 on the vertical reaction force support 4 to lift the inner sample preparation mold 15, so that the sample 14 can be separated from the inner sample preparation mold 15; S8: Install the upper pressure head 6 on the upper end of the sample 14, and use the first hoop 7 to fasten and seal the rubber diaphragm 3 and the upper pressure head 6. S9: Connect the exhaust pipe 2 to the lower exhaust port 11, use the air compressor 1 to evacuate and solidify the sample 14, and at the same time remove the rubber membrane support mold 16. The sample 14 is now complete.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An installation device for indoor experimental samples of reservoir drawdown zone deposits, comprising a bottom support, characterized in that... Also includes: Hydraulic telescopic rod No. 1 and hydraulic telescopic rod No. 2 are both fixedly connected to the bottom bracket; A vertical reaction force support is fixedly connected to the movable ends of hydraulic telescopic rod No. 1 and hydraulic telescopic rod No. 2; The No. 3 hydraulic telescopic rod is fixedly connected to the vertical reaction support, and a pressure plate is fixedly connected to the movable end of the No. 3 hydraulic telescopic rod. The base is fixedly mounted on the bottom bracket, and the base is provided with a lower exhaust hole; A downward pressure head is installed on the top of the base. A filter screen is provided on the upper surface of the downward pressure head, and a pipe communicating with the filter screen is provided inside the downward pressure head. The pipe is connected to the downward exhaust port. A rubber membrane support mold is mounted on a base, and the lower pressure head is located inside the rubber membrane support mold. A rubber membrane is disposed inside a rubber membrane support mold, with its lower end fitted onto a lower pressure head and locked with a first hoop. The upper edge of the rubber membrane is reversed to the upper port of the rubber membrane support mold and locked with a second hoop. An inner sample preparation mold is installed inside a rubber membrane. The bottom of the inner sample preparation mold is installed on a lower pressure head, and a second hoop is provided at both the upper and lower ends of the inner sample preparation mold. Demolding telescopic device, wherein the demolding telescopic device is installed inside the inner sample mold, the demolding telescopic device includes: A protective outer box is disposed inside the inner sample preparation mold; A vertical tie rod, which is rotatably connected to the protective outer box; A circular turntable, which is fixedly connected to the top of the vertical tie rod; The telescopic rod outer cylinder is rotatably connected to the inside of the protective outer box; Two inner rods of the telescopic rod are respectively inserted into both ends of the outer cylinder of the telescopic rod. The inner wall of the outer cylinder of the telescopic rod is provided with nut threads, and the portion of the inner rod located inside the outer cylinder of the telescopic rod is provided with bolt threads, which engage with the nut threads. A large spiral device, which is fixedly connected to the outer cylinder of the telescopic rod; A small helical device is fixedly connected to the middle of the vertical tie rod, and the small helical device is orthogonally engaged with the large helical device; Two top-mounted wall-mounted mechanisms are located at opposite ends of the inner rods of the two telescopic rods, and these two mechanisms can abut against the inner wall of the inner sample mold. The upper pressure head is installed on top of the sample after the inner sample preparation mold is removed; An air compressor is installed on one side of the bottom bracket and is connected to the lower exhaust port via an air extraction pipe.

2. The installation device for indoor experimental samples of reservoir drawdown zone deposits according to claim 1, characterized in that... The first hydraulic telescopic rod includes a first cylinder and a first support rod, with one end of the first support rod slidably connected to the inside of the first cylinder. The second hydraulic telescopic rod includes a second cylinder and a second support rod. The third hydraulic telescopic rod includes a third cylinder and a third support rod. The structures of the second and third hydraulic telescopic rods are the same as those of the first hydraulic telescopic rod.

3. The installation device for indoor experimental samples of reservoir drawdown zone deposits according to claim 2, characterized in that... The side of the rubber membrane support mold is provided with an upper vent hole.

4. The installation device for indoor experimental samples of reservoir drawdown zone deposits according to claim 2, characterized in that... The upper end of the inner sample mold is provided with a hook, and the bottom of the pressure plate is provided with a fishing hole for the hook to pass through.

5. A method for installing a specimen using the installation device for indoor experimental specimens of reservoir drawdown zone deposits as described in claim 2, characterized in that... This includes the following steps: S1: Clean the base and the lower pressure head, install them on the bottom bracket, and place the filter screen on the surface of the lower pressure head; S2: Place the prepared rubber membrane onto the lower pressure head and lock it with the first hoop. Then place the rubber membrane support mold on the base, and flip the upper edge of the rubber membrane down to the upper port of the rubber membrane support mold, and lock it with the first hoop. S3: Use an air compressor to evacuate the air between the rubber membrane support mold and the rubber membrane; S4: Install the inner sample mold in the rubber membrane, place its bottom end on the lower pressure head, and lock the upper and lower ends of the inner sample mold with the second hoop; S5: Lay the first layer of the accumulator sample in the inner sample preparation mold and compact it with a pressure plate until the target thickness of each layer is reached. After the first layer is compacted, roughen the surface of the compacted sample, then place the next layer and compact it. Repeat these steps for each layer until the target total height is reached. S6: Remove the second hoop at the top and bottom of the inner sample mold, operate the demolding telescopic device, and by rotating its circular turntable, through the transmission of the small spiral device and the large spiral device, extend the inner rod of the telescopic rod outward, thereby opening the inner sample mold and separating the inner sample mold from the sample; S7: Use the pressure plate on the vertical reaction support to lift the inner sample mold, so that the sample can be separated from the inner sample mold; S8: Install the upper pressure head on the upper end of the sample, and use the first hoop to secure and seal the rubber diaphragm and the upper pressure head; S9: Connect the exhaust pipe to the lower exhaust port, use an air compressor to evacuate and solidify the sample, and at the same time remove the rubber membrane support mold. The sample preparation and installation are now complete.

Images