A multifunctional rock sample immersion test device and method

Abstract

This invention discloses a multifunctional rock sample immersion test device and method, belonging to the field of rock sample immersion testing. The device's air-drying mechanism is located above the rock sample immersion mechanism and is configured to supply air into the immersion mechanism to accelerate the drying of the rock sample and the inner cavity of the immersion mechanism. The rock sample immersion mechanism is located above the weighing mechanism and is configured to provide a stable environment for the rock sample immersion test. The drain and inlet of the automatic water inlet and outlet mechanism are located inside the immersion mechanism and are configured to automatically supply and drain water into the immersion mechanism. Both the weighing mechanism and the automatic water inlet and outlet mechanism are electrically connected to a control mechanism. The control mechanism controls the automatic water inlet and outlet mechanism to automatically supply and drain water into the immersion mechanism, making the immersion period and immersion pressure adjustable, and automatically calculating and recording the rock sample moisture content. This invention solves the problems of existing rock sample immersion test techniques being complex to operate, labor-intensive and time-consuming, having inaccurate test results, and having a low degree of automation.

Description

Technical Field

[0001] This invention relates to the field of rock sample immersion testing technology, and in particular to a multifunctional rock sample immersion testing device and method. Background Technology

[0002] As my country's coal resource development shifts westward, western mining areas account for 71.6% of the country's coal reserves, but only 3.9% of its water resources. Each ton of coal mined produces 1.87 m³ of mine water, totaling 6.881 billion m³ annually, but the utilization rate is less than 35%, resulting in both water scarcity and waste. Against this backdrop, the existing "water-conserving mining" scheme, utilizing underground reservoirs in coal mine goaf areas, has been implemented. One mining area has already built 35 underground reservoirs, supplying over 95% of the mining area's industrial water, effectively resolving the contradiction between coal mining and water resource protection. However, the environment of underground coal mine reservoirs is complex. Rock strata and dam bodies are subjected to long-term immersion in circulating mine water, leading to increasingly deteriorated mechanical properties and gradually reduced stability, posing risks to long-term safe operation. To address this issue, laboratory-scale rock sample immersion tests have become a key means of assessing rock strata stability. These tests simulate cyclic immersion conditions to study the deterioration mechanisms of coal pillar dams, artificial dams, and overlying rock strata, providing theoretical support for practical engineering.

[0003] In the field of laboratory testing in geotechnical mechanics, existing technologies primarily rely on traditional laboratory rock sample immersion testing methods. These methods typically involve manual operation, including placing rock samples in water-filled containers and manually adding and removing water, as well as recording data. Specifically, the testing process requires researchers to frequently adjust device parameters, such as immersion period, pressure, and water level, while manually weighing the rock samples to calculate changes in moisture content. Existing devices often lack automated control functions; for example, water inlet and outlet require manual valve opening, the drying process requires external equipment assistance, and data recording depends on manual observation and recording. Furthermore, existing technologies have limited capacity for processing multiple rock samples simultaneously, typically handling only a single rock sample or a small number of samples, resulting in low testing efficiency. Overall, existing rock sample immersion testing techniques are centered on manual operation, with designs focusing on basic functionality while neglecting the need for automation and integration.

[0004] Existing rock sample immersion testing techniques have significant drawbacks, directly impacting the reliability and efficiency of the tests. First, the operation is complex, cumbersome, and time-consuming, with long testing cycles (especially those involving cyclic immersion). Researchers are required to adjust the equipment and record data repeatedly over extended periods, increasing labor costs and testing cycles, and resulting in low automation. Second, the testing process is susceptible to external interference. For example, manual water intake and drainage can cause water level fluctuations, and incomplete drying can affect the accuracy of initial data, leading to inaccurate results and failing to provide reliable theoretical support for practical engineering. Finally, current technologies cannot automate recording and calculation. For instance, they cannot periodically and automatically measure changes in rock sample moisture content or adjust immersion pressure in real time, resulting in discontinuous data recording and low computational efficiency. Summary of the Invention

[0005] This invention provides a multifunctional rock sample immersion test device and method, which can solve the problems of existing rock sample immersion test technology being complicated to operate, labor-intensive and time-consuming, having inaccurate test results, and having a low degree of automation.

[0006] To achieve the above objectives, the technical solution of this invention is as follows: In a first aspect, embodiments of the present invention provide a multifunctional rock sample immersion test device, comprising: an air-drying mechanism, a rock sample immersion mechanism, a weighing mechanism, an automatic water inlet and outlet mechanism, and a control mechanism; The air-drying mechanism is located above the rock sample immersion mechanism and is configured to supply air into the rock sample immersion mechanism. The rock sample immersion mechanism is located above the weighing mechanism and is configured to provide a stable environment for the rock sample immersion test. The drain outlet and water inlet of the automatic water inlet and outlet mechanism are located inside the rock sample immersion mechanism and are configured to automatically fill and drain water into the rock sample immersion mechanism. Both the weighing mechanism and the automatic water inlet and outlet mechanism are electrically connected to the control mechanism. The control mechanism controls the automatic water inlet and outlet mechanism to automatically supply water to and drain water from the rock sample immersion mechanism, and automatically calculates and records the water content of the rock sample.

[0007] In conjunction with the first aspect, in one possible implementation, the drying mechanism includes: a retaining plate, a bracket, an air inlet control rod, an air inlet control plate, a fan, and a top plate; The bottom of the locking plate is locked to the top of the rock sample immersion mechanism; The bracket includes four brackets, which are arranged in a circular array on the surface of the locking plate; The top plate is disposed above the bracket; The two ends of the air intake control rod are respectively rotatably connected to the locking plate and the top plate, and the upper end extends out of the top plate; The retaining plate is provided with a semi-circular through hole on one side of the air inlet control rod; The air intake control plate is a semi-circle that matches the shape of the semi-circular through hole, and one end is fixed to the air intake control rod so as to open or close the semi-circular through hole under the action of the air intake control rod. The fan includes at least one, the top of which is fixed to the top plate, and the air supply part is located between the air inlet control plate and the top plate and above the semi-circular through hole.

[0008] In conjunction with the first aspect, in one possible implementation, the rock sample immersion mechanism includes a water storage tank and a storage structure; The water storage tank is a hollow column with a closed bottom and an open top, and is located above the weighing mechanism. The air drying mechanism is located on the top. The storage structure includes at least one, and each storage structure includes a sealing door, a handle, a storage platform, and a fixing rod; The side wall of the water storage tank is provided with an installation port, and the side wall of the installation port is provided with an inwardly recessed groove; The sealing door is slidably disposed within the groove; The handle is located on the outward-facing surface of the sealed door; The platform is fixed in the inner cavity of the water storage tank and located at the sealing door, and has multiple drainage holes evenly distributed on it; The fixing rod includes at least one, one end of which is fixed to the bottom of the platform and the other end is fixed to the inner wall of the water storage tank, and the axis of the fixing rod forms an acute angle with the inner wall surface of the water storage tank.

[0009] In conjunction with the first aspect, in one possible implementation, the automatic water inlet and outlet mechanism includes: an inlet water valve, an inlet water pipe, an outlet water valve, and an outlet water pipe; The input end of the water inlet valve is connected to the water inlet pipe, and the water inlet of the water inlet pipe is located inside the rock sample immersion mechanism; The input end of the drain valve is connected to the drain pipe, and the drain outlet of the drain pipe is located inside the rock sample immersion mechanism. Both the inlet water valve and the outlet water valve are electrically connected to the control mechanism.

[0010] In conjunction with the first aspect, in one possible implementation, the control mechanism includes: a housing, an electronic display screen, a power button, an up button, a down button, a confirmation button, a return button, a running indicator light, a fault indicator light, a power socket, a transmitter, and a processor; The weighing mechanism is embedded in the upper part of the housing; The electronic display screen is embedded on one side of the front end face of the housing, and the power button, the up button, the down button, the confirmation button, the return button, the running indicator light, and the fault indicator light are embedded on the other side. The power socket is embedded on the rear end face. The electronic display screen, the power button, the up button, the down button, the confirmation button, the return button, and the power socket are all electrically connected to the processor. The transmitter is disposed in the inner cavity of the housing and is electrically connected to the processor; The weighing mechanism and the automatic water inlet / outlet mechanism are electrically connected to the transmitter.

[0011] In conjunction with the first aspect, in one possible implementation, the multifunctional rock sample immersion test device also includes a solar power supply mechanism; The solar power supply mechanism includes solar panels; The air-drying mechanism and the automatic water inlet and drainage mechanism are electrically connected to the solar power supply mechanism. The solar power supply mechanism provides power to the automatic water inlet and drainage mechanism with a higher priority than the control mechanism provides power to the automatic water inlet and drainage mechanism.

[0012] Secondly, embodiments of the present invention provide a multifunctional rock sample immersion test method, using the aforementioned multifunctional rock sample immersion test device, comprising the following steps: Step 1: Accelerate the drying of the rock sample and the interior of the rock sample immersion device using the air-drying mechanism until the mass change is less than 0.1g for 5 consecutive minutes; Step 2: Place the rock sample in the rock sample immersion mechanism to conduct a rock sample immersion test; Step 3: Set the immersion parameters through the control mechanism; Step 4: The control mechanism controls the automatic water inlet and drainage mechanism to perform automatic water inlet and drainage operations, and periodically opens or closes the water inlet valve or the drainage valve according to the immersion parameters; Step 5: Weigh the rock sample using a weighing mechanism and transmit the data to the processor via the transmitter of the control mechanism. The control mechanism automatically calculates and records the water content of the rock sample based on the data. The formula for calculating the water content of the rock sample is: w= ×100%; In the formula, w is the water content of the rock sample, m1 is the mass of the rock sample after soaking in water, and m2 is the mass of the rock sample before soaking in water.

[0013] In conjunction with the second aspect, in one possible implementation, step 5 further includes: the control mechanism automatically calculates the pressure exerted on the rock sample, wherein the pressure calculation formula is: p= g ( ); In the formula, p is the pressure exerted on the rock sample, and ρ 水 Let g be the density of water, g be the acceleration due to gravity, and m be the velocity of water. 水 S is the mass of water measured by the weighing mechanism. 底 h is the area of ​​the bottom of the water storage tank. 台 h1 represents the water depth at the location of the platform, and h2 represents the height of the rock sample.

[0014] In conjunction with the second aspect, in one possible implementation, step 1 includes: Step 11: By rotating the air intake control lever, the air intake control lever moves the air intake control plate away from the semi-circular through hole, forming a semi-circular air intake area on the top of the water storage tank; Step 12: Turn on the fan to accelerate the drying of the rock sample and the inner cavity of the rock sample immersion mechanism by speeding up air circulation.

[0015] In conjunction with the second aspect, in one possible implementation, step 3 includes: Step 31: Press the power button to start the control mechanism and ensure the operation indicator light is on; Step 32: Set and adjust the immersion parameters on the electronic display screen using the up, down, confirmation, and return keys. The immersion parameters include the immersion cycle and immersion pressure to control the automatic water inlet and outlet mechanism to supply and drain water into the rock sample immersion mechanism.

[0016] The present invention has the following technical effects or advantages: The multifunctional rock sample immersion test device and method provided by this invention achieves fully automated testing through the coordinated operation of a drying mechanism, a rock sample immersion mechanism, a weighing mechanism, an automatic water inlet / outlet mechanism, and a control mechanism. During operation, the drying mechanism first accelerates the drying of the rock sample and the inner cavity of the immersion mechanism by supplying air. After the rock sample is placed in the immersion mechanism, the control mechanism automatically performs water inlet or outlet operations according to preset immersion cycle and immersion pressure commands. Simultaneously, the weighing mechanism monitors the changes in rock sample mass in real time, and the control mechanism automatically calculates and records the moisture content based on the data fed back from the weighing mechanism. The multifunctional rock sample immersion test device and method provided by this invention, through the unified coordination of automatic water inlet / outlet and weighing calculations by the control mechanism, completely replaces traditional manual operation, significantly reducing operational complexity and shortening the test cycle, solving the problems of complex, labor-intensive, and time-consuming operation. The automatic water inlet / outlet mechanism precisely controls the water level and pressure, and combined with the closed immersion environment, avoids water level fluctuations and external interference caused by manual operation, ensuring a stable test environment and thus improving the accuracy of the results. The integrated automatic control and real-time data calculation functions enable the periodic automatic recording of moisture content and dynamic adjustment of immersion parameters, overcoming the technical shortcomings of not being able to automatically record and calculate, and significantly improving the overall efficiency and reliability of the test. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the overall structure of the multifunctional rock sample immersion test device provided in the embodiments of the present invention. Figure 1 ; Figure 2 A schematic diagram of the overall structure of the multifunctional rock sample immersion test device provided in the embodiments of the present invention. Figure 2 ; Figure 3 A partial structural diagram of the multifunctional rock sample immersion test device provided in this embodiment of the invention. Figure 1 ; Figure 4 A partial structural diagram of the multifunctional rock sample immersion test device provided in this embodiment of the invention. Figure 2 ; Figure 5 A partial structural diagram of the multifunctional rock sample immersion test device provided in this embodiment of the invention. Figure 3 ; Figure 6 This is a schematic diagram of the structure of the multifunctional rock sample immersion test device provided in an embodiment of the present invention. Figure 7 This is a partial structural diagram of the control mechanism of the multifunctional rock sample immersion test device provided in an embodiment of the present invention.

[0019] In the diagram: 1. Drying mechanism; 11. Fastening plate; 12. Bracket; 13. Air inlet control rod; 14. Air inlet control panel; 15. Fan; 16. Top plate; 2. Rock sample immersion mechanism; 21. Water storage tank; 22. Storage structure; 221. Sealing door; 222. Handle; 223. Storage platform; 224. Fixing rod; 225. Drainage hole; 3. Weighing mechanism; 4. Automatic water inlet and outlet mechanism; 41. Water inlet valve; 42. Water inlet pipe; 43. Water outlet valve; 44. Drainage pipe; 5. Control mechanism; 50. Housing; 51. Electronic display screen; 52. Power button; 53. Up button; 54. Down button; 55. Confirm button; 56. Return button; 57. Running indicator light; 58. Fault indicator light; 59. Power socket; 5A. Processor; 5B. Transmitter; 5C. Support pad. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0022] Please refer to Figures 1-7 As shown, this embodiment of the invention provides a multifunctional rock sample immersion test device, including: an air drying mechanism 1, a rock sample immersion mechanism 2, a weighing mechanism 3, an automatic water inlet and outlet mechanism 4, and a control mechanism 5.

[0023] The air-drying mechanism 1 is located above the rock sample immersion mechanism 2 and is configured to supply air into the rock sample immersion mechanism 2 to accelerate the drying of the rock sample and the inner cavity of the rock sample immersion mechanism 2. The rock sample immersion mechanism 2 is located above the weighing mechanism 3 and is configured to provide a stable environment for the rock sample immersion test. The drain and inlet of the automatic water inlet and outlet mechanism 4 are located inside the rock sample immersion mechanism 2 and are configured to automatically fill and drain water into the rock sample immersion mechanism 2. Both the weighing mechanism 3 and the automatic water inlet and outlet mechanism 4 are electrically connected to the control mechanism 5. The control mechanism 5 controls the automatic water inlet and outlet mechanism 4 to automatically fill and drain water into the rock sample immersion mechanism 2, so that the rock sample immersion cycle and immersion pressure are adjustable, and the rock sample moisture content is automatically calculated and recorded.

[0024] The multifunctional rock sample immersion test device provided in this embodiment of the invention achieves fully automated testing through the coordinated operation of a drying mechanism 1, a rock sample immersion mechanism 2, a weighing mechanism 3, an automatic water inlet and outlet mechanism 4, and a control mechanism 5. During operation, the drying mechanism 1 first circulates air to the rock sample and the inner cavity of the rock sample immersion mechanism 2 to accelerate drying. After the rock sample is placed in the rock sample immersion mechanism 2, the control mechanism 5 automatically performs water inlet or outlet operations according to preset immersion parameters using the water inlet and outlet mechanism 4. Simultaneously, the weighing mechanism 3 monitors the changes in rock sample mass in real time, and the control mechanism automatically calculates and records the moisture content based on the data fed back from the weighing mechanism. The multifunctional rock sample immersion test device provided in this embodiment of the invention, through the unified coordination of automatic water inlet and outlet and weighing calculation by the control mechanism 5, completely replaces traditional manual operation, significantly reducing operational complexity and shortening the test cycle, solving the problems of complex, labor-intensive, and time-consuming operation. The automatic water inlet and outlet mechanism 4 precisely controls the water level and pressure, and combined with the closed immersion environment, avoids water level fluctuations and external interference caused by manual operation, ensuring a stable test environment and thus improving the accuracy of the results. The integrated automatic control and real-time data calculation functions enable the periodic automatic recording of moisture content and dynamic adjustment of immersion parameters, overcoming the technical shortcomings of not being able to automatically record and calculate, and significantly improving the overall efficiency and reliability of the test.

[0025] Further, the air-drying mechanism 1 provided in this embodiment of the invention includes: a locking plate 11, a bracket 12, an air inlet control rod 13, an air inlet control plate 14, a fan 15, and a top plate 16. The bottom of the locking plate 11 is locked to the top of the rock sample immersion mechanism 2. Four brackets 12 are included. The four brackets 12 are arranged in a circular array on the surface of the locking plate 11. Figures 1-3 As shown, when the clamping plate 11 is square, four supports 12 are arranged in a circular array at the four corners of the clamping plate 11. The clamping plate 11 is adapted to the shape of the rock sample immersion mechanism 2.

[0026] The top plate 16 is positioned above the bracket 12. The two ends of the air inlet control rod 13 are rotatably connected to the retaining plate 11 and the top plate 16, respectively, with the upper end extending beyond the top plate 16. The retaining plate 11 has a semi-circular through-hole on one side of the air inlet control rod 13. The air inlet control plate 14 is a semi-circle adapted to the shape of the semi-circular through-hole, with one end fixed to the air inlet control rod 13. Specifically, the air inlet control plate 14 can be welded to the air inlet control rod 13, and the semi-circular through-hole can be opened or closed under the action of the air inlet control rod 13. At least one fan 15 is included. The top of at least one fan 15 is fixed to the top plate 16. Specifically, the fan 15 is fixedly connected to the top plate 16, and the control switch of the fan 15 is located above the top plate 16 for easy opening or closing of the switch to control the air inlet status. The air supply part of the fan 15 is located between the air inlet control plate 14 and the top plate 16 and above the semi-circular through-hole. Figure 3A structural schematic diagram including two fans 15 is shown. The retaining plate 11, bracket 12 and top plate 16 together form a support frame to support and fix components such as the air intake control rod 13 and the fans 15.

[0027] The air-drying mechanism 1 provided in this embodiment of the invention, by rotating the air intake control rod 13, drives the air intake control plate 14 to open the semi-circular through hole on the locking plate 11, forming an air intake area. Then, the fan 15 is turned on to accelerate air circulation, achieving rapid drying of the rock sample and the inner cavity of the rock sample immersion mechanism 2. This process is performed before the experiment to ensure that the rock sample and the rock sample immersion mechanism 2 meet the drying standard, for example, a mass change of less than 0.1g for 5 consecutive minutes. This significantly shortens the air-drying time, reduces human intervention, and improves the accuracy of initial data, avoiding the inefficiency and potential errors of traditional manual air-drying, laying a reliable foundation for subsequent immersion experiments.

[0028] like Figures 1-4 and Figure 6 As shown, the rock sample soaking mechanism 2 provided in this embodiment of the invention includes: a water storage tank 21 and a storage structure 22. The water storage tank 21 is a hollow column with a closed bottom and an open top, positioned above the weighing mechanism 3, and a drying mechanism 1 is provided on the top. Specifically, as shown... Figures 1-3 As shown, the bottom of the locking plate 11 of the drying mechanism 1 is locked to the top of the water storage tank 21. The water storage tank 21 can be a cylinder, a square prism, etc. An embodiment of the present invention provides a structural schematic diagram of a square prism water storage tank 21. The storage structure 22 includes at least one. When there are two or more storage structures 22, the two or more storage structures 22 are arranged in a circular array around the central axis of the water storage tank 21 and disposed on the side wall of the water storage tank 21. Figure 4 A schematic diagram showing two storage structures 22 is provided. The two storage structures 22 are disposed opposite each other on the side wall of the water storage tank 21.

[0029] Each storage structure 22 includes a sealing door 221, a handle 222, a shelf 223, and a fixing rod 224. An installation port is provided on the side wall of the water storage tank 21, and an inwardly recessed groove is provided on the side wall of the installation port. The sealing door 221 is slidably disposed within the groove, allowing it to be opened or closed by pushing or pulling. The sealing door 221 is embedded in the groove on the side wall of the installation port of the water storage tank 21. Water can permeate into the gap between the sealing door 221 and the groove, creating a negative pressure effect by filling the tiny gaps to prevent water from flowing out of the water storage tank 21, thus achieving a seal. The sealing performance of the sealing door 221 can greatly ensure the stable conduct of immersion tests under long-term, multi-cycle conditions. The handle 222 is located on the outward-facing surface of the sealing door 221. The shelf 223 is fixed to the inner cavity of the water storage tank 21 and located at the sealing door 221, and has multiple evenly distributed drainage holes 225. Specifically, as shown... Figure 4As shown, a row of drainage holes 225 are evenly distributed along the inner edge of the platform 223. The drainage holes 225 serve to drain water after the test. The fixing rod 224 includes at least one rod. One end of the fixing rod 224 is fixed to the bottom of the platform 223, and the other end is fixed to the inner wall of the water storage tank 21, with its axis forming an acute angle with the inner wall surface of the water storage tank 21. The fixing rod 224, the platform 223, and the inner wall of the water storage tank 21 form a triangle, providing support for the platform 223. Figure 6 A schematic diagram of the structure of the fixing rod 224, which includes two rods, is shown.

[0030] The rock sample immersion mechanism 2 provided in this embodiment of the invention allows the user to open the sealing door 221 by pulling the handle 222, place the rock sample, and then close it to create a sealed environment. The rock sample immersion mechanism 2 provided in this embodiment of the invention has the ability to process multiple rock samples simultaneously, improving experimental efficiency. The negative pressure design of the sealing door 221 effectively prevents water leakage, ensures a stable immersion environment, reduces external interference, and thus improves the reliability and repeatability of experimental results, making it particularly suitable for long-term, multi-cycle experiments.

[0031] like Figure 4 and Figure 5 As shown, the automatic water inlet and outlet mechanism 4 provided in this embodiment of the invention includes: a water inlet valve 41, a water inlet pipe 42, a water outlet valve 43, and a water outlet pipe 44. The input end of the water inlet valve 41 is connected to the water inlet pipe 42, and the water inlet of the water inlet pipe 42 is located inside the water storage tank 21 of the rock sample immersion mechanism 2. The output end of the water outlet valve 43 is connected to the water outlet pipe 44, and the drain outlet of the water outlet pipe 44 is located inside the water storage tank 21 of the rock sample immersion mechanism 2. Both the water inlet valve 41 and the water outlet valve 43 are electrically connected to the control mechanism 5.

[0032] The automatic water inlet and outlet mechanism 4 provided in this embodiment of the invention is coordinated by the control mechanism 5. The inlet water valve 41 and the outlet water valve 43 automatically open and close according to preset immersion parameters. The inlet pipe 42 is connected to a water source, and the outlet pipe 44 is directed to a safe location, achieving precise water inlet and outlet. The automatic water inlet and outlet mechanism 4 provided in this embodiment of the invention can automatically control the immersion cycle and pressure, avoiding the tediousness and errors of manual operation. Its dynamic adjustment of water level and pressure ensures the accuracy and consistency of test conditions, significantly reducing the test cycle and labor costs, while improving the continuity and reliability of data acquisition.

[0033] Furthermore, the control mechanism 5 provided in this embodiment of the invention includes: a housing 50, an electronic display screen 51, a power button 52, an up button 53, a down button 54, a confirmation button 55, a return button 56, a running indicator light 57, a fault indicator light 58, a power socket 59, a transmitter 5B, and a processor 5A.

[0034] The weighing mechanism 3 is embedded in the upper part of the housing 50. An electronic display screen 51 is embedded on one side of the front face of the housing 50, and a power button 52, an up button 53, an down button 54, a confirmation button 55, a return button 56, a running indicator light 57, and a fault indicator light 58 are embedded on the other side. A power socket 59 is embedded on the rear face. The electronic display screen 51, power button 52, up button 53, down button 54, confirmation button 55, return button 56, and power socket 59 are all electrically connected to the processor 5A. The transmitter 5B is located inside the housing 50 and is electrically connected to the processor 5A.

[0035] The processor 5A sends the calculated results of moisture content, pressure, etc., to the electronic display screen 51 for real-time display. The power button 52, up button 53, confirmation button 55, down button 54, and return button 56 transmit button signals to the processor 5A, triggering corresponding operations such as starting, stopping, and adjusting parameter values. The operation indicator light 57 illuminates, indicating that the processor 5A is active and the device is operating normally. The fault indicator light 58 illuminates, indicating that the device has detected abnormalities such as circuit faults or data errors. The processor 5A communicates with the water valves 41 and 43 via the transmitter 5B. The transmitter 5B sends the water valve control signals to the processor 5A. An external power supply powers the entire control mechanism 5 through the power socket 59.

[0036] Weighing mechanism 3 and automatic inlet / outlet mechanism 4 are electrically connected to transmitter 5B. Weighing mechanism 3 monitors the rock sample and liquid mass in real time, and the mass data is directly transmitted to processor 5A for calculating water content and immersion pressure. Specifically, inlet valve 41 and outlet valve 43 are symmetrically arranged on both sides of the rear end of housing 50. The controllers of inlet valve 41 and outlet valve 43 are both electrically connected to transmitter 5B of control mechanism 5. Processor 5A generates control commands based on preset immersion parameters such as immersion cycle and duration. The commands are sent to the valve controllers via transmitter 5B to drive inlet valve 41 and outlet valve 43 to open and close automatically. Valve status feedback signals are returned to processor 5A via the same path as the mass data transmission path. The operating status of inlet valve 41 and outlet valve 43 can be adjusted through control mechanism 5.

[0037] like Figure 2 As shown, the control mechanism 5 also includes support pads 5C. There are four support pads 5C, evenly distributed at the four ends of the bottom of the housing 50. The support pads 5C provide support for the entire device and can adapt to uneven ground environments to ensure the accuracy of the weighing mechanism 3 data.

[0038] The control mechanism 5 provided in this embodiment of the invention includes a processor 5A that receives data from the weighing mechanism 3 and the automatic water inlet / outlet mechanism 4 via a transmitter 5B. The user sets immersion parameters, such as immersion period and pressure, via an electronic display screen 51 and buttons. The processor 5A calculates the moisture content in real time and displays the results. This embodiment of the invention integrates automated control and data processing, automatically recording and calculating the moisture content and pressure of the rock sample, enabling real-time monitoring. Fault indicator lights 58 and running indicator lights 57 provide status feedback, enhancing the intelligence and user-friendliness of the device, solving the problem of discontinuous data recording in traditional methods, and significantly improving experimental efficiency and accuracy.

[0039] The multifunctional rock sample immersion test device provided in this embodiment of the invention also includes a solar power supply mechanism (not shown in the figure). The solar power supply mechanism includes solar panels. The fan 15 of the drying mechanism 1 and the automatic water inlet and outlet mechanism 4 are electrically connected to the solar power supply mechanism. The solar power supply mechanism has a higher priority in supplying power to the automatic water inlet and outlet mechanism than the control mechanism. The processor 5A of the control mechanism 5 predicts energy demand based on the test cycle, such as low power consumption during the immersion period and high power consumption during the drying period, and automatically switches to mains power. This can reduce energy consumption and support normal operation of the device when the power grid is unstable in remote mining areas. By optimizing energy management, external dependence is reduced, improving the availability and adaptability of the device, especially suitable for resource-constrained environments, and enhancing the robustness and sustainability of the overall system.

[0040] This invention enables accelerated air drying of rock samples or instruments, simultaneous processing of multiple rock samples, automatic water intake and drainage, adjustable immersion period and immersion pressure, and automatic calculation and recording of rock sample moisture content. This invention effectively solves the problems of complex operation, time-consuming and labor-intensive processes, and the inability to periodically and automatically record changes in rock sample moisture content in indoor rock mechanics testing, greatly improving the convenience and controllability of indoor rock sample immersion tests.

[0041] Another embodiment of the present invention provides a multifunctional rock sample immersion test method, using the above-mentioned multifunctional rock sample immersion test device, including the following steps: Step 1: In the initial stage of the immersion test, it is necessary to keep the instrument and rock sample dry. Before the test begins, the rock sample and the inside of the rock sample immersion device 2 are accelerated dried using the air-drying mechanism 1 until the mass change is less than 0.1g for 5 consecutive minutes. The air-drying mechanism 1 can maintain the accuracy of the test and ensure the accuracy of the test results.

[0042] Further, step 1 includes: Step 11: By rotating the air intake control lever 13, the air intake control lever 13 drives the air intake control plate 14 away from the semi-circular through hole, forming a semi-circular air intake area on the top of the water storage tank 21; Step 12: Turn on the fan 15 to accelerate the drying of the rock sample and the inner cavity of the rock sample immersion mechanism 2 by accelerating air circulation.

[0043] Step 2: Place the rock sample in the rock sample immersion device 2 to conduct a rock sample immersion test.

[0044] Specifically, by pulling the handle 222 of the placement structure 22 of each rock sample immersion mechanism 2 to open the corresponding sealing door 221, the rock sample is placed on the placement platform 223 and the sealing door 221 is closed by pulling the handle 222.

[0045] Step 3: Set the immersion parameters through the control mechanism 5.

[0046] Step 3 includes: Step 31: Press the power button 52 to start the control mechanism 5, and ensure that the operation indicator light 57 is lit.

[0047] Step 32: Set and adjust the immersion parameters on the electronic display screen 51 using the up key 53, down key 54, confirmation key 55 and return key 56. The immersion parameters include the immersion cycle and immersion pressure to control the automatic water inlet and outlet mechanism 4 to introduce water into the rock sample immersion mechanism 2 and drain water.

[0048] Step 4: The control mechanism 5 controls the automatic water inlet and drainage mechanism 4 to perform automatic water inlet and drainage operations, and periodically opens or closes the water inlet valve or the drainage valve according to the set immersion cycle and immersion pressure.

[0049] Specifically, the inlet valve 41 and outlet valve 43 of the automatic inlet / outlet mechanism 4 can be controlled by a valve controller. The valve controller receives commands from the control mechanism 5. After the immersion cycle is set in the control mechanism 5, the inlet valve 41 and outlet valve 43 can automatically open and close periodically to automatically fill and drain water from the water storage tank 21. The inlet pipe 42 needs to be connected to a normally open faucet, and the outlet pipe 44 needs to be connected to a sewer pipe or a safe and reasonable drainage location. The inlet valve 41 and outlet valve 43 receive commands from the control mechanism 5 and periodically control the opening and closing of the inlet and outlet valves to carry out water filling and drainage. The automatic inlet / outlet mechanism 4 is an indispensable part of realizing the automation of the immersion test device, which greatly avoids tedious and long-term manual operation.

[0050] Step 5: Weigh the sample using a weighing element and transmit the data to the processor 5A via the transmitter 5B of the control mechanism 5. The control mechanism 5 automatically calculates and records the water content of the rock sample based on the data. The formula for calculating the water content of the rock sample is: w= ×100%; In the formula, w is the water content of the rock sample (in 100%), m1 is the mass of the rock sample after immersion in water (in g), and m2 is the mass of the rock sample before immersion in water (in g).

[0051] Before the experiment begins, the control mechanism 5 must be plugged in and the power button 52 pressed to ensure that the operation indicator light 57 is lit normally. If the device malfunctions, the operation indicator light 57 will light up and the fault indicator light 58 will also light up simultaneously. The weighing mechanism 3 can obtain the mass of the rock sample or liquid above in real time and transmit the mass data to the processor 5A, and then display it on the electronic display screen 51 through the transmitter 5B. The weighing mechanism 3, together with the processor 5A, can periodically calculate the water content of the rock sample and calculate the pressure on the rock sample in real time. The electronic display screen 51 can be controlled by the up key 53, down key 54, confirmation key 55 and return key 56. It can select to calculate the water content of the rock sample and the immersion pressure, read and view the test data and test duration, and adjust the immersion pressure in conjunction with the inlet water valve 41 and the outlet water valve 42. At the same time, a fixed immersion cycle, different immersion heights under different immersion cycles, and immersion and dehydration times for different immersion cycles can be set.

[0052] In addition to its computing capabilities, processor 5A also possesses data storage and power storage functions, enabling timely storage of computational data and maintaining low-power operation of the device during emergency power outages. The power supply must be continuously connected during device operation to sustain the electronic control console's long-term operation. Control mechanism 5 is the core component of this device, undertaking the main control and computational tasks, greatly improving the device's automation level and the convenience of experimentation.

[0053] The multifunctional rock sample immersion test method provided in this invention achieves standardized operation throughout the entire process: by setting a drying termination condition of <0.1g mass change over 5 consecutive minutes, the consistency of the initial state of the rock sample is ensured, solving the problem of data deviation caused by incomplete drying in traditional tests. Simultaneously, the control mechanism 5 automatically triggers the water inlet and outlet operations according to the preset immersion cycle and pressure, completely replacing manual intervention. This not only shortens the test cycle but also avoids errors caused by differences in operator experience, providing a stable and controllable environment for long-term cyclic immersion tests.

[0054] Step 5 also includes: the control mechanism 5 automatically calculates the pressure on the rock sample, wherein the pressure calculation formula is: p= g ( ); In the formula, p is the pressure exerted on the rock sample, and ρ 水 The density of water is taken as 1000 kg / m³. 3 g is the acceleration due to gravity, with a value of 9.8 m / s². 2 m 水 The mass of water measured by weighing mechanism 3 is expressed in grams (g) and s. 底 The area of ​​the bottom of the water storage tank 21 is in square meters. 2 h台 h1 represents the water depth at the location of platform 223, in meters, and h2 represents the height of the rock sample, in meters.

[0055] The specific formula for calculating pressure is: V 水 = In the formula, V 水 The volume of water in the water storage tank 21 is expressed in cubic meters (m³). 3 m 水 The mass of water measured by weighing mechanism 3 is expressed in grams (g) and ρ. 水 The density of water is taken as 1000 kg / m³. 3 .

[0056] h 水 = = In the formula, h 水 V represents the water level inside the water storage tank 21. 水 The volume of water in the water storage tank 21 is expressed in cubic meters (m³). 3 S 底 The area of ​​the bottom of the water storage tank 21 is in square meters. 2 m 水 The mass of water measured by weighing mechanism 3 is expressed in grams (g) and ρ. 水 The density of water is taken as 1000 kg / m³. 3 .

[0057] h1=h 水 - h 台 - = - h 台 - In the formula, h1 is the water depth at the location of the rock sample, in meters. 台 h1 represents the water depth at the location of platform 223, in meters; h2 represents the height of the rock sample, in meters. The mass of water measured by weighing mechanism 3 is expressed in grams (g) and s. 底 The area of ​​the bottom of the water storage tank 21 is in square meters. 2 , ρ 水 The density of water is taken as 1000 kg / m³. 3 .

[0058] The formula for calculating pressure is p = ρ 水 gh1= g ( ).

[0059] The method of this invention adds an automatic pressure calculation function. Based on real-time water quality data acquired by the weighing mechanism 3, and combined with parameters such as the bottom area of ​​the water storage tank 21, the water depth of the platform 223, and the height of the rock sample, the method dynamically calculates the actual pressure exerted on the rock sample using a formula. This method considers the dynamic characteristics of the rock sample immersion depth changing with water level, resulting in calculations that better reflect the actual stress state. Its real-time calculation capability allows researchers to dynamically adjust the immersion pressure setting, achieving the core objective of adjustable immersion pressure and providing accurate data support for studying the deterioration patterns of rock samples under different pressure conditions. The calculation process is fully automated, avoiding systematic errors caused by traditional manual water depth measurements.

[0060] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0061] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present invention.

Claims

1. A multifunctional rock sample immersion test device, characterized in that, include: Air drying mechanism (1), rock sample immersion mechanism (2), weighing mechanism (3), automatic water inlet and outlet mechanism (4), and control mechanism (5); The air-drying mechanism (1) is located above the rock sample immersion mechanism (2) and is configured to supply air into the rock sample immersion mechanism (2); The rock sample immersion mechanism (2) is located above the weighing mechanism (3) and is configured to provide a stable environment for the rock sample immersion test; The drain outlet and water inlet of the automatic water inlet and outlet mechanism (4) are located in the inner cavity of the rock sample immersion mechanism (2) and are configured to automatically fill and drain water into the rock sample immersion mechanism (2). The weighing mechanism (3) and the automatic water inlet and outlet mechanism (4) are both electrically connected to the control mechanism (5). The control mechanism (5) controls the automatic water inlet and outlet mechanism (4) to automatically inlet and outlet water into the rock sample immersion mechanism (2), and automatically calculates and records the water content of the rock sample.

2. The multifunctional rock sample immersion test device according to claim 1, characterized in that, The air drying mechanism (1) includes: a clamping plate (11), a bracket (12), an air inlet control rod (13), an air inlet control plate (14), a fan (15), and a top plate (16); The bottom of the locking plate (11) is locked above the rock sample immersion mechanism (2); The bracket (12) includes four brackets, which are arranged in a ring array on the surface of the clamping plate (11); The top plate (16) is disposed above the bracket (12); The two ends of the air intake control rod (13) are rotatably connected to the clamping plate (11) and the top plate (16) respectively, and the upper end extends out of the top plate (16). The retaining plate (11) is provided with a semi-circular through hole on one side of the air inlet control rod (13); The air intake control plate (14) is a semi-circle that is adapted to the shape of the semi-circular through hole. One end is fixed to the air intake control rod (13) so that the semi-circular through hole can be opened or closed under the action of the air intake control rod (13). The fan (15) includes at least one, the top of the at least one fan (15) is fixed on the top plate (16), and the air supply part of the fan (15) is located between the air inlet control plate (14) and the top plate (16) and above the semi-circular through hole.

3. The multifunctional rock sample immersion test device according to claim 1, characterized in that, The rock sample immersion mechanism (2) includes a water storage tank (21) and a storage structure (22); The water storage tank (21) is a hollow column with a closed bottom and an open top, and is located above the weighing mechanism (3). The air drying mechanism (1) is located on the top. The storage structure (22) includes at least one, and each of the storage structures (22) includes a sealing door (221), a handle (222), a storage platform (223), and a fixing rod (224). The water storage tank (21) has an installation port on its side wall, and the side wall of the installation port has an inwardly recessed groove. The sealing door (221) is slidably disposed within the groove; The handle (222) is disposed on the outward-facing surface of the sealing door (221); The platform (223) is fixed in the inner cavity of the water storage tank (21) and located at the sealing door (221), and has a plurality of drainage holes (225) evenly distributed on it. The fixing rod (224) includes at least one, one end of which is fixed to the bottom of the platform (223), and the other end is fixed to the inner wall of the water storage tank (21), and the axis is at an acute angle to the inner wall surface of the water storage tank (21).

4. The multifunctional rock sample immersion test device according to claim 1, characterized in that, The automatic water inlet and outlet mechanism (4) includes: water inlet valve (41), water inlet pipe (42), water outlet valve (43) and water outlet pipe (44). The input end of the water inlet valve (41) is connected to the water inlet pipe (42), and the water inlet of the water inlet pipe (42) is located inside the rock sample immersion mechanism (2); The input end of the drain valve (43) is connected to the drain pipe (44), and the drain outlet of the drain pipe (44) is located inside the rock sample immersion mechanism (2). Both the inlet water valve (41) and the outlet water valve (43) are electrically connected to the control mechanism (5).

5. The multifunctional rock sample immersion test device according to claim 1, characterized in that, The control mechanism (5) includes: housing (50), electronic display screen (51), power button (52), up button (53), down button (54), confirmation button (55), return button (56), running indicator light (57), fault indicator light (58), power socket (59), transmitter (5B) and processor (5A); The weighing mechanism (3) is embedded in the upper part of the housing (50); The electronic display screen (51) is embedded on one side of the front end face of the housing (50), and the power button (52), the up button (53), the down button (54), the confirmation button (55), the return button (56), the running indicator light (57), and the fault indicator light (58) are embedded on the other side. The power socket (59) is embedded on the rear end face. The electronic display screen (51), the power button (52), the up button (53), the down button (54), the confirmation button (55), the return button (56), and the power socket (59) are all electrically connected to the processor (5A); The transmitter (5B) is disposed in the inner cavity of the housing (50) and electrically connected to the processor (5A); The weighing mechanism (3) and the automatic water inlet and outlet mechanism (4) are electrically connected to the transmitter (5B).

6. The multifunctional rock sample immersion test device according to claim 1, characterized in that, The multifunctional rock sample immersion test device also includes a solar power supply mechanism; The solar power supply mechanism includes solar panels; The air-drying mechanism (1) and the automatic water inlet and drainage mechanism (4) are electrically connected to the solar power supply mechanism. The solar power supply mechanism has a higher power supply priority for the automatic water inlet and drainage mechanism (4) than the control mechanism (5).

7. A multifunctional rock sample immersion test method, characterized in that, Using the multifunctional rock sample immersion test apparatus according to any one of claims 1 to 6, the following steps are included: Step 1: The rock sample and the inside of the rock sample immersion device (2) are accelerated by air drying through the air drying device (1) until the mass change is less than 0.1g for 5 consecutive minutes; Step 2: Place the rock sample in the rock sample immersion mechanism (2) to conduct a rock sample immersion test; Step 3: Set the immersion parameters through the control mechanism (5); Step 4: The control mechanism (5) controls the automatic water inlet and drainage mechanism (4) to perform automatic water inlet and drainage operations, and periodically opens or closes the water inlet valve (41) or the water outlet valve (43) according to the immersion parameters. Step 5: Weigh the rock sample using the weighing mechanism (3) and transmit the data to the processor (5A) via the transmitter (5B) of the control mechanism (5). The control mechanism (5) automatically calculates and records the water content of the rock sample based on the data. The formula for calculating the water content of the rock sample is: w= ×100%； In the formula, w is the water content of the rock sample, m1 is the mass of the rock sample after soaking in water, and m2 is the mass of the rock sample before soaking in water.

8. The multifunctional rock sample immersion test method according to claim 7, characterized in that, Step 5 further includes: the control mechanism (5) automatically calculates the pressure on the rock sample, wherein the pressure calculation formula is: p= g( ); In the formula, p is the pressure exerted on the rock sample, and ρ 水 Let g be the density of water, g be the acceleration due to gravity, and m be the velocity of water. 水 S is the mass of water measured by the weighing mechanism. 底 h is the area of ​​the bottom of the water storage tank. 台 h1 represents the water depth at the location of the platform, and h2 represents the height of the rock sample.

9. The multifunctional rock sample immersion test method according to claim 7, characterized in that, Step 1 includes: Step 11: By rotating the air intake control lever (13), the air intake control lever (13) drives the air intake control plate (14) away from the semi-circular through hole, forming a semi-circular air intake area on the top of the water storage tank (21); Step 12: Turn on the fan (15) to accelerate the drying of the rock sample and the inner cavity of the rock sample soaking mechanism (2) by accelerating air circulation.

10. The multifunctional rock sample immersion test method according to claim 7, characterized in that, Step 3 includes: Step 31: Press the power button (52) to start the control mechanism (5) and ensure that the operation indicator (57) is lit; Step 32: Set and adjust the immersion parameters on the electronic display screen (51) by using the up key (53), down key (54), confirmation key (55) and return key (56). The immersion parameters include the immersion cycle and immersion pressure to control the automatic water inlet and outlet mechanism (4) to introduce water into the rock sample immersion mechanism (2) and drain water.

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