A device and method for multi-point in-situ strength detection of deep rock mass

Abstract

The present invention relates to the field of geotechnical engineering test technology, and in particular to a device and method suitable for in-situ multi-point strength detection of deep rock masses. The device comprises a display controller, a collector and a measuring mechanism. The measuring mechanism comprises a telescopic component, four positioning components, a horizontal rotator, a vertical rotator, a hydraulic rod and a detection component. The telescopic component is fixed in a borehole, and the telescopic component pushes the positioning component, the horizontal rotator, the vertical rotator, the hydraulic rod and the detection component deep into the borehole, while the hydraulic rod pushes the detection component into the rock mass. The horizontal rotator drives the vertical rotator to rotate horizontally and drives the detection component to rotate horizontally. The vertical rotator drives the detection component to rotate vertically. During the rotation of the detection component, the rock mass is measured, thereby solving the problem that traditional rock strength testing methods cannot determine the properties of rock masses in a certain area.

Description

Technical Field

[0001] The present invention relates to the technical field of geotechnical engineering tests, and in particular to a device and method suitable for in-situ multi-point strength detection of deep rock masses. Background Art

[0002] Rock mass strength is one of the important factors in the study of mine pressure and slope stability.

[0003] Traditional rock strength testing methods are used to determine the physical and mechanical properties of rock. Typically, rock cores or blocks are retrieved from the site and processed into regular specimens indoors according to relevant standards. Using appropriate loading equipment, the ultimate stress on a specific cross-section of the specimen at failure is measured at a specified loading rate. The average strength of a group of specimens from the same rock type is used as the strength of the rock.

[0004] Using the above method, the traditional method of obtaining rock cores through limited drilling can only obtain the rock properties at limited specific points, and it is difficult to accurately determine the rock properties in a certain area. Summary of the Invention

[0005] The purpose of the present invention is to provide a device and method suitable for in-situ multi-point strength detection of deep rock masses, aiming to solve the problem that traditional rock strength testing methods are unable to determine the properties of rock masses in a certain area.

[0006] To achieve the above-mentioned object, in a first aspect, the present invention provides a device suitable for in-situ multi-point strength detection of deep rock mass, comprising a display controller, a data acquisition instrument, and a measuring mechanism, wherein the display controller, the data acquisition instrument, and the measuring mechanism are connected in sequence;

[0007] The measuring mechanism includes a telescopic component, four positioning components, a horizontal rotator, a vertical rotator, a hydraulic rod and a detection component. The telescopic component is arranged on the side of the collector away from the display controller. The four positioning components are respectively arranged on the outer side wall of the telescopic component. The horizontal rotator is arranged on one side of the telescopic component. The vertical rotator is arranged on the side of the horizontal rotator away from the telescopic component. The hydraulic rod is fixedly connected to the vertical rotator and is located on the side away from the horizontal rotator. The detection component is arranged on the side of the hydraulic rod away from the vertical rotator.

[0008] In which, the telescopic assembly includes an outer shell, a first telescopic rod, a second telescopic rod and two stabilizing members, the first telescopic rod is fixedly connected to the outer shell and is located on the inner wall of the outer shell, the second telescopic rod is fixedly connected to the first telescopic rod and is located on a side away from the outer shell, the two stabilizing members are respectively arranged on the outer side walls of the outer shell, and the horizontal rotator is fixedly connected to the second telescopic rod and is located on a side away from the first telescopic rod.

[0009] Wherein, the positioning assembly includes a first spring and a positioning plate, the first spring is fixedly connected to the second telescopic rod and is located on the outer side wall of the second telescopic rod, and the positioning plate is fixedly connected to the first spring and is located on a side away from the second telescopic rod.

[0010] In which, the detection assembly includes a disc, a turntable, a probe, a tip sensor and four infrared detection lights. The disc is fixedly connected to the vertical rotator and is located on a side away from the horizontal rotator. The turntable is fixedly connected to the disc and is located on a side away from the vertical rotator. The probe is fixedly connected to the turntable and is located on a side away from the disc. The tip sensor is fixedly connected to the probe and is located on a side away from the turntable. The four infrared detection lights are fixedly connected to the disc and are located on a side close to the turntable.

[0011] Wherein, the detection assembly further includes four second springs, and the four second springs are respectively fixedly connected to the disc and are all located on a side close to the turntable.

[0012] The shape of the probe is any one of an ellipse, a rectangle, a trapezoid and a triangle.

[0013] In a second aspect, the present invention provides a method for in-situ multi-point strength detection of deep rock masses, comprising the following steps:

[0014] The telescopic assembly is fixed in the borehole, and the display controller drives the telescopic assembly to push the positioning assembly, horizontal rotator, vertical rotator, hydraulic rod and detection assembly into the borehole, while the hydraulic rod pushes the detection assembly into the rock body;

[0015] The horizontal rotator drives the vertical rotator to rotate horizontally and drives the detection assembly to rotate horizontally. The vertical rotator drives the detection assembly to rotate vertically. During the rotation of the detection assembly, the rock mass is measured to obtain multiple measurement data.

[0016] The data collector acquires a plurality of measurement data and transmits the plurality of measurement data to the display controller;

[0017] The display controller displays a plurality of measurement data and calculates an average value of the plurality of measurement data to obtain the hardness of the rock mass area.

[0018] The present invention provides a device suitable for multi-point in-situ strength detection of deep rock masses. The device fixes the telescopic component in a borehole, and the display controller drives the telescopic component to push the positioning component, the horizontal rotator, the vertical rotator, the hydraulic rod and the detection component to penetrate into the borehole, while the hydraulic rod pushes the detection component into the rock mass; the horizontal rotator drives the vertical rotator to rotate horizontally and drives the detection component to rotate horizontally, and the vertical rotator drives the detection component to rotate vertically. During the rotation of the detection component, the rock mass is measured to obtain multiple measurement data; the acquisition instrument obtains multiple measurement data and transmits multiple measurement data to the display controller; the display controller displays the measurement data and calculates the average value of multiple measurement data to obtain the hardness of the rock mass area, which solves the problem that traditional rock strength testing methods cannot judge the properties of rock masses in a certain area. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 The present invention provides a cross-sectional view of a device for in-situ multi-point strength detection of deep rock masses along the direction of a first telescopic rod.

[0021] Figure 2 The present invention provides a bottom view of a device for in-situ multi-point strength detection of deep rock masses, taken along the direction of the first spring.

[0022] Figure 3 is a schematic diagram of the probe shape.

[0023] Figure 4 It is a structural diagram of the shell and stabilizer.

[0024] Figure 5 It is a cross-sectional view of the fixing block, return spring, insertion tip and protection plate.

[0025] Figure 6 The present invention provides a flowchart of a method for in-situ multi-point strength detection of deep rock masses.

[0026] 1-display controller, 2-collector, 3-measuring mechanism, 4-telescopic assembly, 5-positioning assembly, 6-horizontal rotator, 7-vertical rotator, 8-hydraulic rod, 9-detection assembly, 10-housing, 11-first telescopic rod, 12-second telescopic rod, 13-stabilizing member, 14-first spring, 15-positioning plate, 16-disc, 17-turntable, 18-probe, 19-infrared detection light, 20-tip sensor, 21-second spring, 22-driver, 23-mounting frame, 24-fixed block, 25-reset spring, 26-insertion tip, 27-protective plate, 28-motor, 29-rotating shaft. DETAILED DESCRIPTION

[0027] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0028] In the description of the present invention, it should be understood that the terms "length," "width," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like, indicating positions or location relationships, are based on the positions or location relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, in the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

[0029] See also Figures 1 to 5 In a first aspect, the present invention provides a device for in-situ multi-point strength detection of deep rock mass, comprising a display controller 1, a collection instrument 2, and a measuring mechanism 3, wherein the display controller 1, the collection instrument 2, and the measuring mechanism 3 are connected in sequence;

[0030] The measuring mechanism 3 includes a telescopic component 4, four positioning components 5, a horizontal rotator 6, a vertical rotator 7, a hydraulic rod 8 and a detection component 9. The telescopic component 4 is arranged on the side of the collector 2 away from the display controller 1. The four positioning components 5 are respectively arranged on the outer side wall of the telescopic component 4. The horizontal rotator 6 is arranged on one side of the telescopic component 4. The vertical rotator 7 is arranged on the side of the horizontal rotator 6 away from the telescopic component 4. The hydraulic rod 8 is fixedly connected to the vertical rotator 7 and is located on the side away from the horizontal rotator 6. The detection component 9 is arranged on the side of the hydraulic rod 8 away from the vertical rotator 7.

[0031] In this embodiment, the display controller 1 is connected to the acquisition instrument 2 through a transmission line, and the acquisition instrument 2 is connected to the measuring mechanism 3 through a transmission line. The display controller 1 controls the working state of the measuring mechanism 3 through the acquisition instrument 2 and displays the measurement data of the measuring mechanism 3. Specifically, by fixing the telescopic component 4 in the borehole, the display controller 1 drives the telescopic component 4 to push the positioning component 5, the horizontal rotator 6, the vertical rotator 7, the hydraulic rod 8 and the detection component 9 to penetrate into the borehole, and at the same time, the detection component 9 is pushed into the rock body by the hydraulic rod 8; the horizontal rotator 6 drives the vertical rotator 7, the hydraulic rod 8 and the detection component 9 to penetrate into the rock body; The horizontal rotator 7 rotates horizontally and drives the detection component 9 to rotate horizontally. The vertical rotator 7 drives the detection component 9 to rotate vertically. The rotation range is 0°-90°. The rock mass is measured during the rotation of the detection component 9 to obtain multiple measurement data; the acquisition instrument 2 obtains multiple measurement data and transmits multiple measurement data to the display controller 1; the display controller 1 displays the measurement data and calculates the average value of multiple measurement data to obtain the hardness of the rock area, which solves the problem that the traditional rock strength test method cannot determine the rock properties in a certain area, and also avoids the method of drilling cores from disturbing the in-situ state of the rock mass.

[0032] Furthermore, the telescopic assembly 4 includes a shell 10, a first telescopic rod 11, a second telescopic rod 12 and two stabilizing members 13, the first telescopic rod 11 is fixedly connected to the shell 10 and is located on the inner wall of the shell 10, the second telescopic rod 12 is fixedly connected to the first telescopic rod 11 and is located on a side away from the shell 10, the two stabilizing members 13 are respectively arranged on the outer wall of the shell 10, the horizontal rotator 6 is fixedly connected to the second telescopic rod 12 and is located on a side away from the first telescopic rod 11; the positioning assembly 5 includes a first spring 14 and a positioning plate 15, the first spring 14 is fixedly connected to the second telescopic rod 12 and is located on the outer wall of the second telescopic rod 12, the positioning plate 15 is fixedly connected to the first spring 14 and is located on a side away from the second telescopic rod 12; the detection assembly 9 includes a disc 16, A turntable 17, a probe 18, a tip sensor 20 and four infrared detection lights 19, wherein the disk 16 is fixedly connected to the vertical rotator 7 and is located on a side away from the horizontal rotator 6, the turntable 17 is fixedly connected to the disk 16 and is located on a side away from the vertical rotator 7, the probe 18 is fixedly connected to the turntable 17 and is located on a side away from the disk 16, the tip sensor 20 is fixedly connected to the probe 18 and is located on a side away from the turntable 17, and the four infrared detection lights 19 are fixedly connected to the disk 16 and are located on a side close to the turntable 17; the detection assembly 9 also includes four second springs 21, which are respectively fixedly connected to the disk 16 and are all located on a side close to the turntable 17; the shape of the probe 18 is any one of an ellipse, a rectangle, a trapezoid and a triangle.

[0033] In this embodiment, the housing 10 is fixed to the borehole by the stabilizing member 13, the first telescopic rod 11 is extended to push the second telescopic rod 12 to drive the detection assembly 9 to drill deeper, and the extension of the second telescopic rod 12 can increase the depth of the detection assembly 9 in the borehole. The display controller 1 can display the distance between the detection assembly 9 and the measured rock section detected in real time by the infrared detection light 19 through the collector 2. When the detection assembly 9 penetrates to a safe distance, the display controller 1 drives the first telescopic rod 11 and the second telescopic rod 12 to move the detection assembly 9 deeper into the borehole. 2 stops output, the four first springs 14 respectively pop out the corresponding positioning plates 15, and the positioning plates 15 are pressed against the inner wall of the drill hole. The first spring 14 includes an electromagnetic block, a spring body and a magnet. The electromagnetic block is fixedly connected to the second telescopic rod 12 and is located on the outer wall of the second telescopic rod 12. The spring body is fixedly connected to the electromagnetic block and is located on the side away from the second telescopic rod 12. The magnet is fixedly connected to the spring body and fixedly connected to the positioning plate 15. When the detection component 9 penetrates into the drill hole, the electromagnetic block is turned on and off to absorb the The magnet compresses the spring body and drives the positioning plate 15 to move toward the side close to the second telescopic rod 12 until the four positioning plates 15 contact each other. The positioning plates 15 are in the shape of a quarter arc. When the four positioning plates 15 contact each other, they form a perfect circle, surrounding the spring body. When the inner wall of the borehole is pressed, the electromagnetic block is powered off, and the spring body is reset, pushing the positioning plate 15 on the magnet to press the inner wall of the borehole to achieve position fixing. The horizontal rotator 6 drives the vertical rotator 7 to rotate horizontally and drives the detection assembly 9. The disc 16 rotates horizontally, and the vertical rotator 7 drives the disc 16 to rotate vertically. The disc 16 drives the probe 18 to rotate through the turntable 17. The tip sensor 20 on the probe 18 measures the rock mass when it rotates. The turntable 17 can drive the tip sensor 20 to rotate through the probe 18 for fine-tuning when the tip sensor 20 measures the rock mass, thereby increasing the accuracy of the tip sensor 20 in measuring the rock mass. The deformation of the second spring 21 can be detected by the infrared searchlight to determine the depth of the probe 18 penetrating the rock mass.

[0034] Furthermore, the stabilizing member 13 includes two drivers 22, a mounting bracket 23 and a fixing block 24. The two drivers 22 are fixedly connected to the housing 10 and are respectively located on both sides of the housing 10. The mounting bracket 23 is fixedly connected to the output ends of the two drivers 22. The fixing block 24 is fixedly connected to the mounting bracket 23 and is located on the outer side wall of the mounting bracket 23. The stabilizing member 13 also includes a plurality of return springs 25, a plurality of insertion tips 26 and a protective plate 27. The plurality of return springs 25 are fixedly connected to the fixing block 24 and are located away from the housing 10. On one side of the mounting bracket 23, multiple insertion tips 26 are respectively fixedly connected to the fixed block 24 and are all located on the side close to the return spring 25. The protective plate 27 is fixedly connected to the return spring 25 and is slidably connected to the fixed block 24 and is located on the inner wall of the fixed block 24. The driver 22 includes a motor 28 and a rotating shaft 29. The driver 22 is fixedly connected to the housing 10 and is located on the outer wall of the housing 10. One side of the rotating shaft 29 is fixedly connected to the output end of the motor 28, and the other side of the rotating shaft 29 is fixedly connected to the mounting bracket 23.

[0035] In this embodiment, the motor 28 of the driver 22 drives the rotating shaft 29 to rotate, and when the rotating shaft 29 rotates, it drives the fixed block 24 on the mounting frame 23 to rotate toward the rock mass until the protective plate 27 on the fixed block 24 contacts the rock mass. The mounting frame 23 continues to rotate so that the protective plate 27 slides into the fixed block 24 and squeezes the reset spring 25. At this time, the insertion tip 26 passes through the through hole of the protective plate 27 and penetrates into the rock mass to fix the housing 10. After the measurement is completed, the motor 28 drives the rotating shaft 29 to drive the mounting frame 23 to rotate in the opposite direction, so that the protective plate 27 leaves the rock mass. At this time, the reset spring 25 resets and surrounds the insertion tip 26 to prevent the insertion tip 26 from piercing the user's skin.

[0036] See also Figure 6 In a second aspect, the present invention provides a method for in-situ multi-point strength detection of deep rock masses, comprising the following steps:

[0037] S101 fixes the telescopic assembly 4 in the borehole, and displays that the controller 1 drives the telescopic assembly 4 to push the positioning assembly 5, the horizontal rotator 6, the vertical rotator 7, the hydraulic rod 8, and the detection assembly 9 to penetrate deeper into the borehole, while at the same time pushing the detection assembly 9 into the rock mass through the hydraulic rod 8;

[0038] Specifically, the housing 10 is fixed in the drilled hole by the fixing member of the telescopic assembly 4 .

[0039] S102: the horizontal rotator 6 drives the vertical rotator 7 to rotate horizontally and drives the detection assembly 9 to rotate horizontally. The vertical rotator 7 drives the detection assembly 9 to rotate vertically. During the rotation of the detection assembly 9, the rock mass is measured to obtain a plurality of measurement data.

[0040] Specifically, the rotation angle range of the vertical rotator 7 is 0°-90°.

[0041] S103: the acquisition device 2 acquires a plurality of measurement data and transmits the plurality of measurement data to the display controller 1;

[0042] Specifically, the display controller 1 is connected to the acquisition instrument 2 via a transmission line.

[0043] In step S104 , the display controller 1 displays a plurality of measurement data and calculates an average value of the plurality of measurement data to obtain the hardness of the rock mass region.

[0044] Specifically, the strength value of the rock mass in the in-situ state can be obtained by calculating the average hardness of multiple rock mass points.

[0045] The above disclosure is only a preferred embodiment of the device and method for in-situ multi-point strength detection of deep rock masses of the present invention. Of course, this cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiments and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A device suitable for in-situ multi-point strength detection of deep rock mass, characterized in that: It includes a display controller, a collection instrument and a measuring mechanism, wherein the display controller, the collection instrument and the measuring mechanism are connected in sequence; The measuring mechanism includes a telescopic assembly, four positioning assemblies, a horizontal rotator, a vertical rotator, a hydraulic rod and a detection assembly. The telescopic assembly is arranged on a side of the data collector away from the display controller. The four positioning assemblies are respectively arranged on the outer side wall of the telescopic assembly. The horizontal rotator is arranged on one side of the telescopic assembly. The vertical rotator is arranged on a side of the horizontal rotator away from the telescopic assembly. The hydraulic rod is fixedly connected to the vertical rotator and is located on a side away from the horizontal rotator. The detection assembly is arranged on a side of the hydraulic rod away from the vertical rotator. The telescopic assembly includes a housing, a first telescopic rod, a second telescopic rod, and two stabilizing members. The first telescopic rod is fixedly connected to the housing and is located on an inner sidewall of the housing. The second telescopic rod is fixedly connected to the first telescopic rod and is located on a side away from the housing. The two stabilizing members are respectively provided on the outer sidewall of the housing. The horizontal rotator is fixedly connected to the second telescopic rod and is located on a side away from the first telescopic rod. The stabilizing member includes two drivers, a mounting bracket and a fixing block, the two drivers are fixedly connected to the shell and are respectively located on both sides of the shell, the mounting bracket is fixedly connected to the output ends of the two drivers, and the fixing block is fixedly connected to the mounting bracket and is located on the outer side wall of the mounting bracket; the stabilizing member also includes multiple return springs, multiple insertion tips and a protective plate, the multiple return springs are respectively fixedly connected to the fixing blocks, all located on a side away from the mounting bracket, the multiple insertion tips are respectively fixedly connected to the fixing blocks, all located on a side close to the return springs, the protective plate is fixedly connected to the return springs, and is slidably connected to the fixing block and is located on the inner side wall of the fixing block, the driver includes a motor and a rotating shaft, the driver is fixedly connected to the shell and is located on the outer side wall of the shell, one side of the rotating shaft is fixedly connected to the output end of the motor, and the other side of the rotating shaft is fixedly connected to the mounting bracket.

2. The device for in-situ multi-point strength detection of deep rock mass according to claim 1, characterized in that: The positioning assembly includes a first spring and a positioning plate. The first spring is fixedly connected to the second telescopic rod and is located on the outer side wall of the second telescopic rod. The positioning plate is fixedly connected to the first spring and is located on a side away from the second telescopic rod.

3. The device for in-situ multi-point strength detection of deep rock mass according to claim 1, characterized in that: The detection assembly includes a disc, a turntable, a probe, a tip sensor and four infrared detection lamps. The disc is fixedly connected to the vertical rotator and is located on a side away from the horizontal rotator. The turntable is fixedly connected to the disc and is located on a side away from the vertical rotator. The probe is fixedly connected to the turntable and is located on a side away from the disc. The tip sensor is fixedly connected to the probe and is located on a side away from the turntable. The four infrared detection lamps are fixedly connected to the disc and are located on a side close to the turntable.

4. The device for in-situ multi-point strength detection of deep rock mass according to claim 3, characterized in that: The detection assembly further includes four second springs, which are respectively fixedly connected to the disc and are all located on a side close to the rotating disc.

5. The device for in-situ multi-point strength detection of deep rock mass according to claim 3, characterized in that: The shape of the probe is any one of an ellipse, a rectangle, a trapezoid and a triangle.

6. A method for in-situ multi-point strength detection of deep rock mass, using the device for in-situ multi-point strength detection of deep rock mass according to claim 1, characterized in that: The following steps are involved: The telescopic assembly is fixed in the borehole, and the display controller drives the telescopic assembly to push the positioning assembly, horizontal rotator, vertical rotator, hydraulic rod and detection assembly into the borehole, while the hydraulic rod pushes the detection assembly into the rock body; The horizontal rotator drives the vertical rotator to rotate horizontally and drives the detection assembly to rotate horizontally. The vertical rotator drives the detection assembly to rotate vertically. During the rotation of the detection assembly, the rock mass is measured to obtain multiple measurement data. The data collector acquires a plurality of measurement data and transmits the plurality of measurement data to the display controller; The display controller displays a plurality of measurement data and calculates an average value of the plurality of measurement data to obtain the hardness of the rock mass area.

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