Automatic test equipment and method for rigid bearing plate method on-site rock mass in-situ deformation test

Abstract

The invention provides an automatic test device and method for a rigid bearing plate method on-site rock mass in-situ deformation test. The device comprises a loading unit, a displacement acquisition unit, a portable in-situ test terminal and a multifunctional data collection and pressure control integrated device. The loading unit and the displacement acquisition unit are connected with the multifunctional data collection and pressure control integrated device; and the multifunctional data collection and pressure control integrated device is in communication connection with the portable in-situ test terminal. According to the rigid bearing plate method on-site rock mass in-situ deformation test automatic test equipment and method, deformation / displacement and pressure are measured in a non-manual reading mode, data are sent to an acquisition instrument in a wireless transmission mode, meanwhile, an electric pressure control device is adopted to accurately control loading and unloading of pressure, and the test efficiency is improved. And a portable in-situ test terminal is adopted to control and monitor the whole test process, so that in-situ rock mass mechanical parameters are accurately obtained, and the test efficiency and the reliability and accuracy of test data are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering geology in-situ measurement such as hydropower, water conservancy, transportation, and mining, and specifically relates to an automatic test device and method for an on-site rock mass in-situ deformation test using a rigid pressure plate method. Background Art

[0002] Engineering geological survey and design require the acquisition of mechanical parameters such as deformation modulus and elastic modulus of rock mass in the project area. Generally, field testing is the most direct and effective method. There are many methods for testing the deformation modulus and elastic modulus of rock mass, among which the rigid pressure plate method is one of the main testing methods. The rigid pressure plate method is widely used in the field of rock mass in-situ deformation test because it is carried out on the project site and is simple to operate. The mechanical parameters obtained are closer to the actual working conditions, especially in the hydropower and water conservancy industries.

[0003] The traditional rigid pressure plate deformation test mainly uses a hand pump and a pressure gauge combination to add and depressurize the jack to control the loading and unloading of the normal stress; a mechanical direct-reading micrometer is used to measure the corresponding deformation, and the pressure gauge and micrometer pointer are read manually to record the data manually. During the test, due to factors such as line of sight deviation, poor lighting effects, and uneven manual pressurization rate, the test results are easily affected by human factors; the accuracy and reliability of the test data have created uncertainty, affecting the test efficiency. Summary of the invention

[0004] In view of the defects in the prior art, the present invention provides an automatic testing device and method for in-situ deformation testing of rock mass using a rigid pressure plate method, which can effectively solve the above problems.

[0005] The technical solution adopted by the present invention is as follows:

[0006] The present invention provides an automatic test device for an on-site rock mass in-situ deformation test using a rigid pressure plate method, comprising: a loading unit, a displacement acquisition unit, a portable in-situ test terminal (9) and a multifunctional data acquisition and pressure control integrated device (12); the loading unit and the displacement acquisition unit are both connected to the multifunctional data acquisition and pressure control integrated device (12); the multifunctional data acquisition and pressure control integrated device (12) is communicatively connected to the portable in-situ test terminal (9);

[0007] in:

[0008] The loading unit comprises a top steel pad (2), a high-rigidity force transmission tube (3), a steel link chuck (4), a jack (5), a rigid pressure plate (7) and a transition steel pad (15); between the surrounding rock surface test point and the surrounding rock top wall of the exploration flat tunnel surrounding rock (1), the rigid pressure plate (7), the transition steel pad (15), the jack (5), the steel link chuck (4), the high-rigidity force transmission tube (3) and the top steel pad (2) are coaxially arranged in sequence from bottom to top, so that the rigid pressure plate (7) is in close contact with the surrounding rock surface test point, and the top steel pad (2) is in close contact with the surrounding rock top wall; the top of the jack (5) is connected to the bottom of the high-rigidity force transmission tube (3) through the steel link chuck (4);

[0009] The displacement acquisition unit comprises a reference steel beam (6), a fixed pad (8), a wireless digital displacement meter (10) and a magnetic seat (11); one reference steel beam (6) is arranged on each of the front and rear sides of the rigid pressure plate (7); the bottom of both ends of each reference steel beam (6) is supported above the surface of the surrounding rock through the fixed pad (8); the two reference steel beams (6) are arranged in parallel; two magnetic seats (11) are arranged in the axial middle of each reference steel beam (6), and each magnetic seat (11) is used to install one wireless digital displacement meter (10).

[0010] Preferably, the diameter of the transition steel pad (15) is larger than the diameter of the jack (5) and smaller than the diameter of the rigid pressure plate (7); the pressure output from below the jack (5) is transmitted to the test point on the surrounding rock surface through the transition steel pad (15) and the rigid pressure plate (7) in sequence.

[0011] Preferably, it is characterized in that the diameter of the top steel pad (2) is greater than the diameter of the high-rigidity force transmission tube (3);

[0012] The pressure output from the top of the jack (5) is transmitted to the top wall of the surrounding rock through the high-rigidity force transmission tube (3) and the top steel pad (2) in sequence.

[0013] Preferably, the fixed pad (8) is arranged away from the test point on the surrounding rock surface.

[0014] Preferably, the wireless digital displacement meter (10) has a wireless communication function, and comprises a probe protective shell (101), a dial (102), a display screen (103), a zeroing button (104), a fixed clamping sheath (105), a probe (106), a main board and a battery compartment (107), a main steel frame (108) and a switch button (109);

[0015] The dial (102) is installed at the front end of the main steel frame (108), and the main board and the battery compartment (107) are installed at the rear end; the middle part of the main steel frame (108) vertically passes through the probe protection shell (101) and the fixed clamping sleeve (105) installed coaxially above and below, and the lower part of the fixed clamping sleeve (105) clamps the probe (106);

[0016] The display screen (103), the return-to-zero button (104) and the switch button (109) are arranged on the surface of the dial (102).

[0017] Preferably, the measuring end of the probe (106) faces the test point on the surrounding rock surface.

[0018] Preferably, the multifunctional data acquisition and pressure control integrated device (12) is built with a pressure sensor, a control module, a jack pressure-adding and unloading drive module and a wireless communication module; an oil supply pipe (13) and an oil return pipe (14) are connected between the jack pressure-adding and unloading drive module and the jack (5); the pressure sensor is used to collect the pressure applied to the jack (5) through the oil supply pipe (13); the control module is connected to the pressure sensor and the jack pressure-adding and unloading drive module; the control module is wirelessly connected to the wireless digital displacement meter (10) and the portable in-situ test terminal (9) through the wireless communication module.

[0019] Preferably, the multifunctional data acquisition and pressure control integrated device (12) comprises a data receiving and transmitting antenna (201), a control panel (202), a manual pressurization button (203), a manual pressure relief button (204), a working status indicator light (205), a pressure display gauge (206), a charging jack (207), a power indicator light (208), a handle (209), a housing (210) and a heat dissipation window (211);

[0020] The handle (209) is arranged on the top of the housing (210), the heat dissipation window (211) is arranged on the side, and the control panel (202), the pressure display gauge (206), the charging jack (207) and the power indicator light (208) are arranged on the front; the data receiving and transmitting antenna (201), the manual pressurization button (203), the manual pressure relief button (204) and the working status indicator light (205) are arranged on the surface of the control panel (202).

[0021] The present invention also provides a test method of the automatic test equipment for in-situ deformation test of rock mass using a rigid bearing plate method, comprising the following steps:

[0022] Step S1, processing and description of test points on the surrounding rock surface:

[0023] Clean rock scum at the preset surrounding rock surface test points and level the surrounding rock surface test points; after cleaning with water, use a multifunctional data acquisition and pressure control integrated device (12) to take photos of the surrounding rock surface test points before the test; and input geological catalog description information of the surrounding rock surface test points;

[0024] Step S2, install the device:

[0025] A rigid pressure plate (7), a transition steel pad (15), a jack (5), a steel link chuck (4), a high-rigidity force transmission tube (3) and a top steel pad (2) are sequentially installed above the test point on the surrounding rock surface;

[0026] A fixed pad (8) is arranged around the test point on the surrounding rock surface, a reference steel beam (6) is arranged on the fixed pad (8), and a wireless digital displacement meter (10) is set up on the reference steel beam (6); finally, a plurality of the wireless digital displacement meters (10) are arranged around the test point on the surrounding rock surface;

[0027] Connecting the oil supply pipe (13) and the oil return pipe (14) of the multifunctional data acquisition and pressure control integrated device (12) to the jack (5);

[0028] Step S3, device debugging connection:

[0029] Open the test program of the multifunctional data acquisition and pressure control integrated device (12), select the test type, enter the test parameters, including the number of the multifunctional data acquisition and pressure control integrated device (12), the number and output coefficient of the jack (5), and the number of the wireless digital displacement meter (10), and detect the working status of each device and the data transmission status;

[0030] Step S4, establish a test project:

[0031] Input the unique measurement point number of the test point on the surrounding rock surface, select the test basis, the type and area of ​​the rigid pressure plate (7), set and input the test normal stress, rock mass Poisson's ratio, test state, test personnel parameter information, import the photos of the test point on the surrounding rock surface and the geological catalog description information before the test, and start the test after confirming that the information is correct;

[0032] Step S5, the device automatically performs the test:

[0033] According to the test items established in step S4, the multifunctional data acquisition and pressure control integrated device (12) loads and unloads the normal stress step by step, determines stability according to the stability determination rule, and automatically records the pressure data collected by the pressure sensor and the displacement data collected by the wireless digital displacement meter (10), and transmits them to the portable in-situ test terminal (9);

[0034] Step S6, end of test:

[0035] After the pressure increase and decompression are all completed, the portable in-situ test terminal (9) pops up a dialog box to end the test, and enters the photos of the test points on the surrounding rock surface and the geological catalog description information after the test is completed, and the test is completed;

[0036] The portable in-situ test terminal (9) generates a test report including a pressure-displacement curve.

[0037] The automatic test equipment and method for in-situ deformation test of rock mass by rigid pressure plate method provided by the present invention have the following advantages:

[0038] The present invention provides an automatic testing device and method for in-situ deformation testing of rock mass using a rigid pressure plate method, which adopts a non-manual reading method to measure deformation / displacement and pressure, and sends the data to a collection instrument in a wireless transmission manner. At the same time, an electric pressure control device is used to accurately control the loading and unloading of pressure, and a portable in-situ test terminal is used to control and monitor the entire test process, so as to accurately obtain the in-situ rock mass mechanical parameters, improve the test efficiency and the reliability and accuracy of the test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A three-dimensional schematic diagram of an automatic test equipment for in-situ rock mass deformation test of the present invention;

[0040] Figure 2 A three-dimensional schematic diagram of a wireless digital displacement meter of an automatic test equipment for in-situ rock mass deformation test using a rigid bearing plate method according to the present invention;

[0041] Figure 3 It is a three-dimensional structural schematic diagram of a multifunctional data acquisition and pressure control integrated device of an automatic test equipment for in-situ rock deformation test using a rigid pressure plate method of the present invention.

[0042] in:

[0043] 1-Exploration adit surrounding rock; 2-Top steel pad; 3-High rigidity force transmission tube; 4-Steel link chuck; 5-Jack; 6-Benchmark steel beam; 7-Rigid pressure plate; 8-Fixed pad; 9-Portable in-situ test terminal; 10-Wireless digital displacement meter; 11-Magnetic table base; 12-Multifunctional data acquisition and pressure control integrated device; 13-Oil supply pipe; 14-Oil return pipe; 15-Transition steel pad;

[0044] 101-probe protective shell; 102-dial; 103-display screen; 104-zero return button; 105-fixed clamping sheath; 106-probe; 107-main board and battery compartment; 108-main steel frame; 109-switch button;

[0045] 201-data receiving and transmitting antenna; 202-control panel; 203-manual pressurization button; 204-manual pressure relief button; 205-working status indicator light; 206-pressure display gauge; 207-charging jack; 208-battery indicator light; 209-handle; 210-housing; 211-heat dissipation window. DETAILED DESCRIPTION

[0046] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0047] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by terms such as "upper end", "lower end", "outside", "two ends", "middle" and "bottom" are orientations or positional relationships based on the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or device referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "layout", "installation", "equipped with", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In view of the problems existing in the prior art, the present invention provides an automatic testing equipment for on-site in-situ deformation testing of rock mass, which adopts a non-manual reading method to measure deformation / displacement and pressure, and sends the data to a collection instrument by wireless transmission. At the same time, an electric pressure control device is adopted to accurately control the loading and unloading of pressure, and a portable in-situ test terminal is adopted to control and monitor the entire test process, so as to accurately obtain the in-situ rock mass mechanical parameters, improve the test efficiency and the reliability and accuracy of the test data.

[0050] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0051] The present invention provides an automatic test equipment for in-situ deformation test of rock mass by rigid pressure plate method, which is suitable for in-situ measurement of engineering geology such as hydropower, water conservancy, transportation, and mining, especially for in-situ deformation test of rock mass in engineering geological survey. Figure 1 As shown, it includes: a loading unit, a displacement acquisition unit, a portable in-situ test terminal 9 and a multifunctional data acquisition and pressure control integrated device 12; the loading unit and the displacement acquisition unit are both connected to the multifunctional data acquisition and pressure control integrated device 12; the multifunctional data acquisition and pressure control integrated device 12 is communicatively connected to the portable in-situ test terminal 9;

[0052] The loading unit includes a top steel pad 2, a high-rigidity force transmission tube 3, a steel link chuck 4, a jack 5, a rigid pressure plate 7 and a transition steel pad 15; between the surrounding rock surface test point of the exploration flat tunnel surrounding rock 1 and the surrounding rock top wall, the rigid pressure plate 7, the transition steel pad 15, the jack 5, the steel link chuck 4, the high-rigidity force transmission tube 3 and the top steel pad 2 are coaxially arranged in sequence from bottom to top, so that the rigid pressure plate 7 is in close contact with the surrounding rock surface test point, and the top steel pad 2 is in close contact with the surrounding rock top wall; the top of the jack 5 is connected to the bottom of the high-rigidity force transmission tube 3 through the steel link chuck 4.

[0053] As a preferred embodiment, the diameter of the transition steel pad 15 is larger than the diameter of the jack 5 and smaller than the diameter of the rigid pressure plate 7; the pressure output from below the jack 5 is transmitted to the test point on the surrounding rock surface through the transition steel pad 15 and the rigid pressure plate 7 in turn.

[0054] As a preferred embodiment, the diameter of the top steel pad 2 is greater than the diameter of the high-rigidity force transmission tube 3; the pressure output from the top of the jack 5 is transmitted to the top wall of the surrounding rock through the high-rigidity force transmission tube 3 and the top steel pad 2 in sequence.

[0055] The displacement acquisition unit includes a reference steel beam 6, a fixed pad 8, a wireless digital displacement meter 10 and a magnetic table seat 11; one reference steel beam 6 is arranged on both sides of the front and rear of the rigid pressure plate 7; the bottom of both ends of each reference steel beam 6 is supported above the surrounding rock surface by the fixed pad 8; the fixed pad 8 is arranged away from the test point on the surrounding rock surface. The two reference steel beams 6 are arranged in parallel; two magnetic table seats 11 are arranged in the axial middle of each reference steel beam 6, and each magnetic table seat 11 is used to install a wireless digital displacement meter 10.

[0056] Therefore, since the fixed pad 8 is arranged away from the test point on the surrounding rock surface, the distance away can be planned so that the reference steel beam 6 can remain basically stationary during the test, so that the wireless digital displacement meter 10 can remain basically stationary, thereby ensuring the accuracy of the surrounding rock deformation / displacement measured by the wireless digital displacement meter 10 and reducing the test error. Therefore, the present invention effectively improves the accuracy of surrounding rock deformation / displacement acquisition.

[0057] like Figure 2 As shown, the wireless digital displacement meter 10 has a wireless communication function, including a probe protection shell 101, a dial 102, a display screen 103, a zeroing button 104, a fixed clamping sheath 105, a probe 106, a main board and a battery compartment 107, a main steel frame 108 and a switch button 109;

[0058] The dial 102 is installed at the front end of the main steel frame 108, and the main board and battery compartment 107 are installed at the rear end; the middle part of the main steel frame 108 vertically passes through the probe protection shell 101 and the fixed clamping sleeve 105 installed coaxially above and below, and the lower part of the fixed clamping sleeve 105 clamps the probe 106; the measuring end of the probe 106 faces the test point on the surrounding rock surface. The display screen 103, the zeroing button 104 and the switch button 109 are arranged on the surface of the dial 102.

[0059] In the present invention, the wireless digital displacement meter 10 is used to measure the deformation / displacement of the surrounding rock during the test. Unlike conventional electronic displacement meters, it does not require external power cords and data cables. A main board and a battery compartment 107 are arranged behind the dial 102. A rechargeable lithium battery is built in, and the battery life is greater than 48 hours at rated power. It transmits data wirelessly with the multifunctional data acquisition and pressure control integrated device 12, and has the function of automatically connecting with the multifunctional data acquisition and pressure control integrated device 12 after power is turned on.

[0060] The wireless digital displacement meter 10 has a small-screen LCD display of displacement, and the value can be reset to zero at any point; its protection level is IP67, which is drop-proof and vibration-resistant, and is suitable for working in a humid, high-humidity, occasional splashing, dusty, and muddy cave environment.

[0061] The multifunctional data acquisition and pressure control integrated device 12 has a built-in pressure sensor, a control module, a jack pressure increase and reduction drive module and a wireless communication module; an oil supply pipe 13 and an oil return pipe 14 are connected between the jack pressure increase and reduction drive module and the jack 5; the pressure sensor is used to collect the pressure applied to the jack 5 through the oil supply pipe 13; the control module is connected to the pressure sensor and the jack pressure increase and reduction drive module; the control module is wirelessly connected to the wireless digital displacement meter 10 and the portable in-situ test terminal 9 through the wireless communication module.

[0062] like Figure 3 As shown, the multifunctional data acquisition and pressure control integrated device 12 includes a data receiving and transmitting antenna 201, a control panel 202, a manual pressurization button 203, a manual pressure relief button 204, a working status indicator light 205, a pressure display gauge 206, a charging jack 207, a power indicator light 208, a handle 209, a housing 210 and a heat dissipation window 211;

[0063] The handle 209 is arranged on the top of the shell 210, the heat dissipation window 211 is arranged on the side, and the control panel 202, the pressure display gauge 206, the charging jack 207 and the power indicator light 208 are arranged on the front; the data receiving and transmitting antenna 201, the manual pressurization button 203, the manual pressure relief button 204 and the working status indicator light 205 are arranged on the surface of the control panel 202.

[0064] The multifunctional data acquisition and pressure control integrated device 12 mainly has the following functions:

[0065] (1) Pressure display, collection and transmission:

[0066] The device is provided with a direct-reading pressure display gauge 206 and a built-in high-precision pressure sensor, which can display and collect the pressure applied to the jack 5 through the oil supply pipe 13 in real time, and forward the pressure data to the portable in-situ test terminal 9;

[0067] (2) Displacement data collection and forwarding:

[0068] This device can communicate wirelessly with the wireless digital displacement meter 10, forward the displacement data collected by the wireless digital displacement meter 10 to the portable in-situ test terminal 9, and can collect data from 8 wireless digital displacement meters 10;

[0069] (3) Jack pressure relief control:

[0070] This device has a built-in DC battery. The jack pressure increase and unloading drive module adopts a DC servo pump body and a high-precision screw solenoid valve inside the device. The built-in DC battery provides power to the jack pressure increase and unloading drive module, which can accurately control the loading and unloading of the jack pressure.

[0071] The portable in-situ test terminal 9 provided by the present invention has the following characteristics: anti-vibration, anti-fall, protection level IP67, with camera function, easy to hold, and continuous battery life of about 48 hours in working state. The device runs a special in-situ test program, through which the device can be managed and tested, including displaying the device status, controlling the device startup, displaying the test pressure, displacement data and pressure-displacement real-time curve, automatically distinguishing the loading and unloading of test data and collecting data, automatically entering the next test step, abnormal alarm, one-key report generation, etc.

[0072] In the present invention, wireless transmission is adopted to transmit data between the wireless digital displacement meter 10 and the multifunctional data acquisition and pressure control integrated device 12, and between the multifunctional data acquisition and pressure control integrated device 12 and the portable in-situ test terminal 9; the wireless transmission method is to communicate by high-frequency radio frequency technology through the built-in RF433 radio frequency module to realize multi-point to single-point and single-point to single-point data high-speed and stable transmission.

[0073] The present invention also provides a test method of an automatic test device for an on-site rock mass in-situ deformation test using a rigid bearing plate method, which is different from a traditional test and includes the following steps:

[0074] Step S1, processing and description of test points on the surrounding rock surface:

[0075] Clean the rock scum at the preset surrounding rock surface test points, and level the surrounding rock surface test points; after washing with water, use the multifunctional data acquisition and pressure control integrated device 12 to take photos of the surrounding rock surface test points before the test; input the geological catalog description information of the surrounding rock surface test points;

[0076] Step S2, install the device:

[0077] A rigid pressure plate 7, a transition steel pad 15, a jack 5, a steel link chuck 4, a high-rigidity force transmission tube 3 and a top steel pad 2 are sequentially installed above the test point on the surrounding rock surface;

[0078] A fixed pad 8 is arranged around the test point on the surrounding rock surface, and a reference steel beam 6 is arranged on the fixed pad 8, and a wireless digital displacement meter 10 is set up on the reference steel beam 6; finally, a plurality of the wireless digital displacement meters 10 are arranged around the test point on the surrounding rock surface;

[0079] Connect the oil supply pipe 13 and the oil return pipe 14 of the multifunctional data acquisition and pressure control integrated device 12 to the jack 5;

[0080] Step S3, device debugging connection:

[0081] Open the test program of the multifunctional data acquisition and pressure control integrated device 12, select the test type, enter the test parameters, including the number of the multifunctional data acquisition and pressure control integrated device 12, the number and output coefficient of the jack 5, and the number of the wireless digital displacement meter 10, and detect the working status of each device and the data transmission status;

[0082] Step S4, establish a test project:

[0083] Input the unique measurement point number of the test point on the surrounding rock surface, select the test basis, the type and area of ​​the rigid pressure plate 7, set and input the test normal stress, rock mass Poisson's ratio, test state, test personnel parameter information, import the photos of the test point on the surrounding rock surface before the test and the geological catalog description information, and start the test after confirming that the information is correct;

[0084] Step S5, the device automatically performs the test:

[0085] According to the test items established in step S4, the multifunctional data acquisition and pressure control integrated device 12 loads and unloads the normal stress step by step, judges stability according to the stability judgment rule, and automatically records the pressure data collected by the pressure sensor and the displacement data collected by the wireless digital displacement meter 10, and transmits them to the portable in-situ test terminal 9;

[0086] During the test, the portable in-situ test terminal 9 has the functions of abnormal data alarm, pressure increase and release working status reminder, etc., and can also manually pause and start the test process to handle abnormal situations during the test.

[0087] Step S6, end of test:

[0088] After the pressure increase and decompression are all completed, the portable in-situ test terminal 9 pops up a dialog box to end the test, enter the photos of the test points on the surrounding rock surface and the geological catalog description information after the test is completed, and complete the test;

[0089] The portable in-situ test terminal 9 can export and generate a test report, including a pressure-displacement curve, with one click.

[0090] Through the program control of the portable in-situ test terminal 9, the rigid bearing plate method on-site rock mass in-situ deformation test is automatically carried out, thereby improving the test efficiency.

[0091] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An automatic test equipment for in-situ rock mass deformation test using a rigid pressure plate method, characterized in that: include: A loading unit, a displacement acquisition unit, a portable in-situ test terminal (9) and a multifunctional data acquisition and pressure control integrated device (12); The loading unit and the displacement acquisition unit are both connected to the multifunctional data acquisition and pressure control integrated device (12); the multifunctional data acquisition and pressure control integrated device (12) is communicatively connected to the portable in-situ test terminal (9); in: The loading unit comprises a top steel pad (2), a high-rigidity force transmission tube (3), a steel link chuck (4), a jack (5), a rigid pressure plate (7) and a transition steel pad (15); between the surrounding rock surface test point and the surrounding rock top wall of the exploration flat tunnel surrounding rock (1), the rigid pressure plate (7), the transition steel pad (15), the jack (5), the steel link chuck (4), the high-rigidity force transmission tube (3) and the top steel pad (2) are coaxially arranged in sequence from bottom to top, so that the rigid pressure plate (7) is in close contact with the surrounding rock surface test point, and the top steel pad (2) is in close contact with the surrounding rock top wall; the top of the jack (5) is connected to the bottom of the high-rigidity force transmission tube (3) through the steel link chuck (4); The displacement acquisition unit comprises a reference steel beam (6), a fixed pad (8), a wireless digital displacement meter (10) and a magnetic seat (11); one reference steel beam (6) is arranged on each of the front and rear sides of the rigid pressure plate (7); the bottom of both ends of each reference steel beam (6) is supported above the surface of the surrounding rock through the fixed pad (8); the two reference steel beams (6) are arranged in parallel; two magnetic seats (11) are arranged in the axial middle of each reference steel beam (6), and each magnetic seat (11) is used to install one wireless digital displacement meter (10).

2. The automatic test equipment for in-situ rock mass deformation test using a rigid bearing plate method according to claim 1 is characterized in that: The diameter of the transition steel pad (15) is larger than the diameter of the jack (5) and smaller than the diameter of the rigid pressure plate (7); the pressure output from the bottom of the jack (5) is transmitted to the test point on the surface of the surrounding rock through the transition steel pad (15) and the rigid pressure plate (7) in sequence.

3. The automatic test equipment for in-situ rock mass deformation test using a rigid bearing plate method according to claim 1 is characterized in that: The diameter of the top steel pad (2) is greater than the diameter of the high-rigidity force transmission tube (3); The pressure output from the top of the jack (5) is transmitted to the top wall of the surrounding rock through the high-rigidity force transmission tube (3) and the top steel pad (2) in sequence.

4. The automatic test equipment for in-situ rock mass deformation test using a rigid bearing plate method according to claim 1 is characterized in that: The fixed pad (8) is arranged away from the test point on the surrounding rock surface.

5. The automatic test equipment for in-situ rock mass deformation test using a rigid bearing plate method according to claim 1 is characterized in that: The wireless digital displacement meter (10) has a wireless communication function, and comprises a probe protection shell (101), a dial (102), a display screen (103), a zero return button (104), a fixed clamping sheath (105), a probe (106), a main board and a battery compartment (107), a main steel frame (108) and a switch button (109); The dial (102) is installed at the front end of the main steel frame (108), and the main board and the battery compartment (107) are installed at the rear end; the middle part of the main steel frame (108) vertically passes through the probe protection shell (101) and the fixed clamping sleeve (105) installed coaxially above and below, and the lower part of the fixed clamping sleeve (105) clamps the probe (106); The display screen (103), the return-to-zero button (104) and the switch button (109) are arranged on the surface of the dial (102).

6. The automatic test equipment for in-situ rock mass deformation test using a rigid bearing plate method according to claim 2 is characterized in that: The measuring end of the probe (106) faces the test point on the surrounding rock surface.

7. The automatic test equipment for in-situ rock mass deformation test using a rigid bearing plate method according to claim 1 is characterized in that: The multifunctional data acquisition and pressure control integrated device (12) has a built-in pressure sensor, a control module, a jack pressure-adding and unloading drive module and a wireless communication module; an oil supply pipe (13) and an oil return pipe (14) are connected between the jack pressure-adding and unloading drive module and the jack (5); the pressure sensor is used to collect the pressure applied to the jack (5) through the oil supply pipe (13); the control module is connected to the pressure sensor and the jack pressure-adding and unloading drive module; and the control module is wirelessly connected to the wireless digital displacement meter (10) and the portable in-situ test terminal (9) through the wireless communication module.

8. The automatic test equipment for in-situ rock mass deformation test using a rigid bearing plate method according to claim 7 is characterized in that: The multifunctional data acquisition and pressure control integrated device (12) comprises a data receiving and transmitting antenna (201), a control panel (202), a manual pressurization button (203), a manual pressure relief button (204), a working status indicator light (205), a pressure display gauge (206), a charging jack (207), a power indicator light (208), a handle (209), a housing (210) and a heat dissipation window (211); The handle (209) is arranged on the top of the housing (210), the heat dissipation window (211) is arranged on the side, and the control panel (202), the pressure display gauge (206), the charging jack (207) and the power indicator light (208) are arranged on the front; the data receiving and transmitting antenna (201), the manual pressurization button (203), the manual pressure relief button (204) and the working status indicator light (205) are arranged on the surface of the control panel (202).

9. A test method for an automatic test equipment for in-situ deformation test of rock mass using a rigid bearing plate method according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step S1, processing and description of test points on the surrounding rock surface: Clean rock scum at the preset surrounding rock surface test points and level the surrounding rock surface test points; after cleaning with water, use a multifunctional data acquisition and pressure control integrated device (12) to take photos of the surrounding rock surface test points before the test; and input geological catalog description information of the surrounding rock surface test points; Step S2, install the device: A rigid pressure plate (7), a transition steel pad (15), a jack (5), a steel link chuck (4), a high-rigidity force transmission tube (3) and a top steel pad (2) are sequentially installed above the test point on the surrounding rock surface; A fixed pad (8) is arranged around the test point on the surrounding rock surface, a reference steel beam (6) is arranged on the fixed pad (8), and a wireless digital displacement meter (10) is set up on the reference steel beam (6); finally, a plurality of the wireless digital displacement meters (10) are arranged around the test point on the surrounding rock surface; The oil supply pipe (13) and the oil return pipe (14) of the multifunctional data acquisition and pressure control integrated device (12) are connected to the jack (5); Step S3, device debugging connection: Open the test program of the multifunctional data acquisition and pressure control integrated device (12), select the test type, enter the test parameters, including the number of the multifunctional data acquisition and pressure control integrated device (12), the number and output coefficient of the jack (5), and the number of the wireless digital displacement meter (10), and detect the working status of each device and the data transmission status; Step S4, establish a test project: Input the unique measurement point number of the test point on the surrounding rock surface, select the test basis, the type and area of ​​the rigid pressure plate (7), set and input the test normal stress, rock mass Poisson's ratio, test state, test personnel parameter information, import the photos of the test point on the surrounding rock surface and the geological catalog description information before the test, and start the test after confirming that the information is correct; Step S5, the device automatically performs the test: According to the test items established in step S4, the multifunctional data acquisition and pressure control integrated device (12) loads and unloads the normal stress step by step, determines stability according to the stability determination rule, and automatically records the pressure data collected by the pressure sensor and the displacement data collected by the wireless digital displacement meter (10), and transmits them to the portable in-situ test terminal (9); Step S6, end of test: After the pressure increase and decompression are all completed, the portable in-situ test terminal (9) pops up a dialog box to end the test, and enters the photos of the test points on the surrounding rock surface and the geological catalog description information after the test is completed, and the test is completed; The portable in-situ test terminal (9) generates a test report including a pressure-displacement curve.

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