CN114720305A - Rock shear strength and uniaxial compressive strength in-situ test system and test method - Google Patents
Rock shear strength and uniaxial compressive strength in-situ test system and test method Download PDFInfo
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- CN114720305A CN114720305A CN202210188157.6A CN202210188157A CN114720305A CN 114720305 A CN114720305 A CN 114720305A CN 202210188157 A CN202210188157 A CN 202210188157A CN 114720305 A CN114720305 A CN 114720305A
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- 238000012360 testing method Methods 0.000 title claims abstract description 126
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- 230000007246 mechanism Effects 0.000 claims abstract description 56
- 238000010008 shearing Methods 0.000 claims abstract description 21
- 229910003460 diamond Inorganic materials 0.000 claims description 19
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0025—Shearing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0252—Monoaxial, i.e. the forces being applied along a single axis of the specimen
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0258—Non axial, i.e. the forces not being applied along an axis of symmetry of the specimen
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Abstract
The invention provides an in-situ test system and a test method for rock shear strength and uniaxial compressive strength, which comprises the following steps: the diameter of the cylinder body is matched with the inner diameter of the exploration hole, and the cylinder body is arranged in the exploration hole; the engraving electric spindle, the axial loading mechanism and the tangential loading mechanism are sequentially arranged in the cylinder body; the carving electric spindle is used for carving a test block with a preset size on the side wall of the exploration hole; the axial loading mechanism is used for applying axial force to the test block and acquiring real-time data of the axial force; the tangential loading mechanism is used for applying a shearing force to the test block and acquiring real-time data of the shearing force; the test system further comprises: the driving devices are connected with the carving electric main shaft and used for driving the carving electric main shaft to displace in a direction corresponding to the driving direction; and the control device is connected with the carving electric spindle, the axial loading mechanism, the tangential loading mechanism and the plurality of walking devices.
Description
Technical Field
The invention belongs to the technical field of geotechnical engineering in-situ testing, and particularly relates to an in-situ testing system and method for rock shear strength and uniaxial compressive strength.
Background
In the field of geotechnical engineering testing, accurate acquisition of basic mechanical parameters of rock mass, particularly parameters of shear strength and compressive strength, is particularly important for design and safety evaluation of underground engineering. The common testing device for obtaining the basic mechanical parameters of the rock mass can be divided into an indoor testing device and an in-situ testing device according to a use scene, wherein the indoor testing device comprises a rigid servo testing machine, a triaxial compression instrument and the like, and the in-situ testing device comprises a sound wave testing instrument, a point load testing instrument, a bearing plate testing instrument and the like. The following main problems exist in the existing test of the shear strength and the compressive strength of the rock mass:
(1) at present, geotechnical engineering tests mainly adopt indoor tests, a large amount of sampling, transportation and preparation cutting work exists, secondary disturbance damage to rock masses is easily caused in the process, and the time is long.
(2) The in-situ test devices such as a bearing plate method and the like have the characteristics of large volume, high power consumption, heavy weight and the like, and the test operation space is limited in some application scenes such as ultra-deep drilling, and the water consumption and the power consumption of a high and steep slope are limited.
(3) The point load test result is inaccurate for the strength test result, and the complicated stress condition cannot be considered.
(4) The soft rock which is partially expanded when meeting water, softened when meeting water or easily weathered after excavation lacks a testing device and a testing method suitable for the soft rock.
Disclosure of Invention
The rock shear strength and uniaxial compressive strength in-situ test system provided by the invention is used for solving the technical problems;
in order to solve the above problems, a first aspect of the present invention provides an in-situ rock shear strength and uniaxial compressive strength testing system for performing a test operation in an excavated exploration hole, the testing system comprising: the diameter of the cylinder body is matched with the inner diameter of the exploration hole, and the cylinder body is arranged in the exploration hole; the engraving electric spindle, the axial loading mechanism and the tangential loading mechanism are sequentially arranged in the cylinder body; the driving devices are connected with the carving electric spindle and are used for driving the carving electric spindle to generate displacement corresponding to the driving direction; the positioning mechanisms are correspondingly arranged on the cylinder body and used for fixing the cylinder body in the exploration hole; the plurality of travelling devices are arranged on the barrel; the control device is connected with the carving motorized spindle, the axial loading mechanism, the tangential loading mechanism and the plurality of walking devices; the control device is used for controlling the carving motorized spindle to carve a test block with a preset size on the side wall of the exploration hole; the control device is used for controlling the axial loading mechanism to apply an axial force to the test block so as to acquire real-time data of the axial force, and the control device is used for controlling the tangential loading mechanism to apply a shearing force to the test block so as to acquire real-time data of the shearing force.
In a first aspect, the engraving electrospindle comprises: the high-speed brushless speed regulating motor is respectively connected with the control device and the diamond carving knife, and the control device controls the high-speed brushless speed regulating motor to drive the diamond carving knife to carve.
In a first aspect, the diamond graver is provided with a notch, and paraffin is provided in the notch.
In a first aspect, the axial loading mechanism comprises: a loading motor, a speed reducer and a loading rod; the loading motor is respectively connected with the control device and the speed reducer, the output end of the speed reducer is connected with the loading rod, and the control device controls the speed reducer motor to drive the speed reducer motor to rotate so that the loading rod generates axial displacement.
In the first aspect, the axial loading mechanism further comprises an axial pressure sensor, and the axial pressure sensor is connected with the control device.
In a first aspect, the tangential loading mechanism comprises: the tangential loading motor is respectively connected with the control device and the push plate, and the control device controls the tangential loading motor to drive the push plate to perform tangential displacement.
In a first aspect, the tangential loading mechanism further comprises a shear force sensor, the shear force sensor being connected to the control device.
In a first aspect, the driving device includes: the device comprises an axial driving device and a tangential driving device, wherein the axial driving device and the tangential driving device are both stepping motors.
In a second aspect, the invention provides an in-situ test method for rock shear strength and uniaxial compressive strength, which is applied to the in-situ test system for rock shear strength and uniaxial compressive strength, and comprises the following steps: arranging the test system at a preset position of an exploration hole; carving a test block with a preset size at the preset position through the test system, and connecting the test block at the preset position; applying axial force and shearing force to the test block through the test system; and acquiring axial pressure data and tangential pressure data of the test block.
In a second aspect, the test system further comprises an engraving motorized spindle, and engraving a test block of a preset size at the preset position by the test system comprises: and engraving a test block with a preset size at the preset position through the engraving electric spindle.
Has the advantages that: the invention provides an in-situ test system for rock shear strength and uniaxial compressive strength, which has the following technical effects:
1. the carving electric spindle, the axial loading mechanism, the tangential loading mechanism, the driving devices and the positioning mechanisms are integrated in the barrel to form an integrated structure, the integration level of the device is high, the in-situ test device for the site is formed, during the experiment, the barrel is moved into an exploration hole, the carving electric spindle is used for carving a sample with a preset size on the side wall of the exploration hole, the defects that sampling is carried out when geotechnical engineering tests are carried out indoors in the prior art, the sample is transported to a laboratory and then is subjected to processes such as preparation and cutting, and secondary disturbance is easily caused to the sample are overcome;
2. with each integrated structure of above-mentioned experimental apparatus, solved among the prior art for example: when the in-situ device which is tested by the bearing plate method is tested, the defects of overlarge volume, large power consumption and heavy weight of the device exist, and the device is further applied to the defects of limited operation space in an ultra-deep drill hole, water consumption on a high and steep slope, limited power consumption and the like;
3. through carving the mode that motorized spindle, axial loading mechanism, tangential loading mechanism and a plurality of drive arrangement are connected with controlling means, can accurately acquire the test data of above-mentioned corresponding device through controlling means, the inaccurate and the unable drawback of considering complicated stress condition of prior art midpoint load test result has been solved, simultaneously, can also detect the intensity and the roughness of the lateral wall in exploration hole through above-mentioned device, filled in prior art should partially meet water inflation, or meet water softening or excavation back easy rotten soft rock test system's vacancy.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a diagram of a rock shear strength and uniaxial compressive strength in-situ test system according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a control device according to a first embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of an in-situ rock shear strength and uniaxial compressive strength testing system according to a first embodiment of the present invention;
FIG. 4 shows the shape and forming path of a test block according to an embodiment of the present invention;
description of reference numerals:
1. a barrel;
2. a cable;
3. a control device;
301. a touch operation screen;
302. a monitor screen;
303. a storage battery;
4. a traveling device;
5. a positioning mechanism;
6. engraving the motorized spindle;
7. an axial loading mechanism;
8. a tangential loading mechanism;
9. an axial drive device;
10. a tangential drive.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived from the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.
Meanwhile, in the embodiments of the present description, when an element is referred to as being "fixed to" another element, it may be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical", "horizontal", "left", "right" and the like used in the embodiments of the present specification are for illustrative purposes only and are not intended to limit the present invention.
The first embodiment is as follows:
as shown in fig. 1 to 3, in the first embodiment, an in-situ rock shear strength and uniaxial compressive strength testing system is provided, which is used for performing testing operation in an excavated exploration hole, and is characterized in that the testing system includes: the device comprises a cylinder body 1, a plurality of driving devices, a carving electric spindle 6, an axial loading mechanism 7, a tangential loading mechanism 8, a plurality of positioning mechanisms 5, a plurality of traveling devices 4 and a control device 3;
the diameter of the barrel body 1 is matched with the inner diameter of the exploration hole, and the barrel body is arranged in the exploration hole; the engraving electric spindle 6, the axial loading mechanism 7 and the tangential loading mechanism 8 are sequentially arranged in the cylinder body 1;
the plurality of driving devices are connected with the carving electric spindle 6 and are used for driving the carving electric spindle 6 to displace in a corresponding driving direction;
the cylinder body 1 is correspondingly arranged on the cylinder body 1 and used for fixing the cylinder body 1 in the exploration hole;
the plurality of walking devices 4 are arranged on the barrel 1;
the control device 3 is connected with the engraving electric spindle 6, the axial loading mechanism 7, the tangential loading mechanism 8 and the plurality of walking devices 4;
the control device 3 is used for controlling the carving motorized spindle 6 to carve a test block with a preset size on the side wall of the exploratory hole; the control device 3 is configured to control the axial loading mechanism 7 to apply an axial force to the test block to obtain real-time data of the axial force, and the control device 3 is configured to control the tangential loading mechanism 8 to apply a shearing force to the test block to obtain real-time data of the shearing force.
In the technical scheme of the first embodiment, the carving electric spindle 6, the axial loading mechanism 7, the tangential loading mechanism 8, the driving devices and the positioning mechanisms 5 are integrated in the cylinder body 1 to form an integrated structure, the integration level of the device is high, and the in-situ test device for the site is formed. The technical effect of improving the in-situ rock mass shearing test precision is achieved.
As for the control device 3, the first embodiment proposes an implementation mode, which includes: the control device 3 comprises a storage battery 303, a touch operation screen 301 and a monitoring screen 302, and comprises the storage battery 303, the touch operation screen 301 and the monitoring screen 302; the touch operation screen 301 is used for displaying test data of each sensor of the loading part in real time and providing touch remote operation for a user to set and adjust the loading part, and the monitoring screen 302 is used for displaying detailed conditions of rock samples observed when the barrel 1 enters a rock mass in real time, selecting test points according to the detailed conditions and monitoring the test process in real time; the length of the cable 2 needs to meet the requirements of the depth of a test hole and the test distance;
as for the positioning mechanism 55, it includes: the locating lever, the length of locating lever is when 30mm, is applicable to 110 ~ 130mm exploration hole. The positioning rod can be customized according to the survey aperture so as to meet the survey hole with the aperture of more than 130 mm;
further, as for the engraving electric spindle in the first embodiment, the first embodiment proposes an implementation manner, which includes: the high-speed brushless speed-regulating motor is connected with the diamond carving knife and used for driving the diamond carving knife to carve the side wall of the exploration hole into a test block with a preset size.
Further, for the carving electric spindle in the first embodiment, the carving electric spindle further comprises a camera which is arranged at the end part of the carving motor and is opposite to the hole opening part on the cylinder body 1, and the specific situation of the hole wall can be observed along the way when the loading part enters the exploration hole
Still further, as for the diamond graver in the first example, the first example proposes an implementation manner, which includes: be provided with the notch on the diamond carving tool, be provided with paraffin in the notch, after the diamond carving tool carved the action, paraffin flowed in order to lubricate the diamond carving tool from the notch.
As for the axial loading mechanism 7 in the first embodiment, the first embodiment proposes an implementation mode, which includes: the loading motor, the speed reducer, the loading rod and the loading screw rod nut pair; the output end of the loading motor is connected with the speed reducer, the output end of the speed reducer is connected with the loading rod, and the speed reducer motor is used for driving the speed reducer motor to rotate so as to enable the loading rod to generate axial displacement; the axial loading can be provided for the carved sample, the load range is 0-2000N, and the actual value is set by the operation screen;
further, as for the axial loading mechanism 7, the first embodiment also proposes an implementation mode, which includes: and the axial pressure sensor is connected with the control device 3 and used for detecting the axial pressure of the axial loading mechanism 7 and transmitting the axial pressure information to the control device 3.
As for the tangential loading mechanism in the first embodiment, the first embodiment proposes an implementation manner, which includes: the test block shearing device comprises a tangential loading motor, a shearing force screw nut pair, a rocker, a large tappet, a small tappet, a shearing force push plate and other elements, wherein the output end of the tangential loading motor is connected with the shearing force push plate and used for driving the shearing force push plate to perform tangential displacement action so as to apply shearing force to a test block and provide a load of 0-1500N.
Further, as for the tangential loading mechanism in the first embodiment, the first embodiment proposes an implementation manner, which includes: and the shearing force sensor is connected with the control device 3 and is used for detecting the shearing force of the tangential loading mechanism and transmitting shearing force data to the control device 3.
As for the driving device in the first embodiment, the first embodiment proposes an implementation manner, which includes: a carving electric main shaft driving motor, an axial stepping motor and a tangential movement stepping motor.
Referring to fig. 4, the sample shape of fig. 4 after being engraved by the engraving electric spindle is driven by the axial driving device 9 to displace along the paths 1, 2, and 4, and driven by the tangential driving device 10 to displace along the paths 3 and 5, so as to finally engrave the shape shown in fig. 4.
Example two:
the second embodiment of the invention provides an in-situ test method for the shear strength and the uniaxial compressive strength of a rock, which is applied to any one in-situ test system for the shear strength and the uniaxial compressive strength of the rock, and the test method comprises the following steps: arranging a test system at a preset position of the exploration hole; carving a test block with a preset size at a preset position through a test system, and connecting the test block at the preset position; applying axial force and shearing force to the test block through a test system; axial pressure data and tangential pressure data of the test block are obtained.
Further, as for the step of engraving the test block with the preset size at the preset position by the test system in the first embodiment, this embodiment proposes an implementation manner, which includes: and engraving a test block with a preset size at a preset position by using the engraving machine.
Further, in the first stage, before the testing system is disposed at the preset position of the exploratory hole, the testing method further comprises: checking whether each motor is in the initial position, if not, adjusting the motors to be restored to the initial position after turning on the power supply; the diamond graver was examined for wear and for filling with paraffin, which was used as a coolant. Turning on a power supply;
then arranging the test system at a preset position of the exploration hole, wherein the test comprises the step of using a sling or a mandril to send the loading part to a preset position in the exploration hole; the walking mechanism can also be operated to enter the exploration hole;
finally, observing the hole wall according to the image returned by the camera, and selecting a proper test point;
in the second stage, before carving a test block with a preset size at a preset position through a test system, the test method comprises the following steps: preliminarily estimating the compressive strength and the shear strength of the rock according to existing engineering geological data, setting the compressive strength and the shear strength as early warning values of an axial pressure sensor and a shear force sensor respectively, detecting whether the hole wall of an exploration hole is regular or not, and if the hole wall is irregular, alarming that the hole wall is irregular and the test is ended;
when the test system engraves the test block with the preset size at the preset position, the test method further comprises the following steps: monitoring the current value of the carving electric spindle, if the current value exceeds a set value, indicating that the diamond carving tool is not sharp enough, at the moment, the control end can automatically slow down the feeding speed of the carving electric spindle, and when the speed is lower than the set value, the current value of the carving electric spindle cannot be reduced, alarming that the carving tool fails and the test is ended, and automatically returning the diamond carving tool to the initial position according to the original way and then cutting off the power supply;
in the third stage, after the step of acquiring the axial pressure data and the tangential pressure data of the test block is finished, taking out the test system from the hole and wiping the test system clean; checking whether each motor is in a reset state; and checking the condition of the battery, and if the battery is under-voltage, charging the battery before next work. And (4) checking the abrasion condition of the diamond carving knife, timely replacing the diamond carving knife if the diamond carving knife is seriously abraded, and timely supplementing the diamond carving knife if paraffin is lost. And checking the wear condition of the camera, and timely replacing the camera if the display is not clear. And (5) checking whether other parts of the test system are damaged or not, and timely maintaining, replacing and maintaining. And turning off the power supply, and storing the test system in the storage device.
Since the second embodiment and the first embodiment are the same in the same inventive concept and have the same main structure, the parts of the second embodiment that are substantially the same as the parts of the first embodiment will not be described in detail, and the detailed parts will not refer to the first embodiment.
Finally, it should be noted that: the above-mentioned embodiments are merely specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; and the modifications, changes or substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention. Are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. Rock shear strength and unipolar compressive strength normal position test system, test system is used for carrying out the test operation in the exploration hole after the excavation, its characterized in that, test system includes:
the diameter of the cylinder body is matched with the inner diameter of the exploration hole, and the cylinder body is arranged in the exploration hole; the engraving electric spindle, the axial loading mechanism and the tangential loading mechanism are sequentially arranged in the cylinder body;
the driving devices are connected with the carving electric spindle and are used for driving the carving electric spindle to generate displacement corresponding to the driving direction;
the positioning mechanisms are correspondingly arranged on the cylinder body and used for fixing the cylinder body in the exploration hole;
the plurality of travelling devices are arranged on the barrel;
the control device is connected with the engraving electric spindle, the axial loading mechanism, the tangential loading mechanism and the plurality of walking devices;
the control device is used for controlling the carving motorized spindle to carve a test block with a preset size on the side wall of the exploration hole; the control device is used for controlling the axial loading mechanism to apply an axial force to the test block so as to acquire real-time data of the axial force, and the control device is used for controlling the tangential loading mechanism to apply a shearing force to the test block so as to acquire real-time data of the shearing force.
2. The in situ rock shear strength and uniaxial compressive strength testing system of claim 1, wherein the sculpted motorized spindle comprises:
the high-speed brushless speed regulating motor is respectively connected with the control device and the diamond carving knife, and the control device controls the high-speed brushless speed regulating motor to drive the diamond carving knife to carve.
3. The in-situ rock shear strength and uniaxial compressive strength testing system of claim 2, wherein:
the diamond carving tool is provided with a notch, and paraffin is arranged in the notch.
4. The in situ rock shear strength and uniaxial compressive strength testing system of claim 1, wherein the axial loading mechanism comprises:
a loading motor, a speed reducer and a loading rod; the loading motor is respectively connected with the control device and the speed reducer, the output end of the speed reducer is connected with the loading rod, and the control device controls the speed reducer motor to drive the speed reducer motor to rotate so that the loading rod generates axial displacement action.
5. The in-situ rock shear strength and uniaxial compressive strength testing system of claim 4, wherein:
the axial loading mechanism further comprises an axial pressure sensor, and the axial pressure sensor is connected with the control device.
6. The in situ rock shear strength and uniaxial compressive strength testing system of claim 1, wherein the tangential loading mechanism comprises:
the tangential loading motor is respectively connected with the control device and the tangential force push plate, and the control device controls the tangential loading motor to drive the tangential force push plate to perform tangential displacement.
7. The in-situ rock shear strength and uniaxial compressive strength testing system of claim 6, wherein:
the tangential loading mechanism further comprises a shear force sensor, and the shear force sensor is connected with the control device.
8. The in situ rock shear strength and uniaxial compressive strength testing system of claim 1, wherein the driving device comprises:
the device comprises an axial driving device and a tangential driving device, wherein the axial driving device and the tangential driving device are both stepping motors.
9. The in-situ test method for the shear strength and uniaxial compressive strength of the rock, which is applied to the in-situ test system for the shear strength and uniaxial compressive strength of the rock of any one of the claims 1 to 8, is characterized by comprising the following steps:
arranging the test system at a preset position of an exploration hole;
carving a test block with a preset size at the preset position through the test system, and connecting the test block at the preset position;
applying axial force and shearing force to the test block through the test system;
and acquiring axial pressure data and tangential pressure data of the test block.
10. The in-situ rock shear strength and uniaxial compressive strength testing method of claim 9, wherein the testing system further comprises an engraving electric spindle, and wherein the engraving a test block with a preset size at the preset position by the testing system comprises:
and engraving a test block with a preset size at the preset position through the engraving electric spindle.
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