CN111474060A - Quick and automatic measuring device for engineering rock mechanical parameters and application method - Google Patents
Quick and automatic measuring device for engineering rock mechanical parameters and application method Download PDFInfo
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- CN111474060A CN111474060A CN202010363954.4A CN202010363954A CN111474060A CN 111474060 A CN111474060 A CN 111474060A CN 202010363954 A CN202010363954 A CN 202010363954A CN 111474060 A CN111474060 A CN 111474060A
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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
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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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
Abstract
The invention provides a quick and automatic measuring device for engineering rock mechanical parameters, which is carried on TBM equipment and comprises an penetrometer, a real-time positioning sensing system, a display, a hydraulic loading system and a control system. The penetrometer comprises a conical pressure head, a jack, a bearing base, a pressure sensor and a displacement sensor. The penetrometer utilizes the conical pressure head to contact the rock wall, and pressure and displacement data in the loading process are obtained through the pressure sensor and the displacement sensor. The penetrometer is connected to a hydraulic loading system to provide loading hydraulic pressure; the penetrometer, the real-time positioning sensing system, the display and the hydraulic loading system are connected to the control system. The method can realize automatic test, quickly and automatically measure the load-displacement information of the surrounding rock of the TBM tunnel, so as to convert the information into rock mass mechanical parameters, predict the rock mass characteristics in a certain range in front of the tunnel face of the TBM, and provide a theoretical basis for tunnel support.
Description
Technical Field
The invention belongs to the field of rock exploration and testing, particularly relates to a device for testing mechanical parameters of engineering rocks and an application method, and particularly relates to a device for quickly and automatically measuring the mechanical parameters of surrounding rocks during the construction of a tunnel boring machine (TBM for short) and an application method.
Background
The rock mechanics parameter is the direct embodiment of rock mechanics property, influences TBM's efficiency of construction. When the tunnel is constructed, the mechanical parameters of the surrounding rock are quickly and automatically acquired, and the method can be applied to a supporting design scheme as early as possible, so that the construction safety is ensured; meanwhile, the obtained rock mass mechanical parameters can be used for predicting the rock mass property in front of the tunnel face, and theoretical guidance is provided for taking support measures in advance and construction speed.
The method for analyzing the existing test implementation mode to obtain the rock mass mechanical parameters mainly comprises an indoor test and an in-situ test. The laboratory test needs a large amount of on-site coring and is used for single-axis tests, triaxial tests, shear tests and the like. The development and distribution of the engineering rock mass structural plane can influence the integrity of the rock mass, and a complete rock core is difficult to obtain in site coring, so that errors exist between rock mechanical parameters obtained through indoor tests and actual parameters of the engineering rock mass; a large amount of coring work is time-consuming and labor-consuming, and meanwhile, the supporting construction in the tunnel is also delayed.
Compared with an indoor test, the in-situ test does not need sampling, and the test device can be directly used for testing the surrounding rock on site. At present, a drilling in-situ testing device (for example, patent: CN108444815A) is adopted for obtaining rock mechanical parameters in an in-situ test, and the operation is complete and simple. However, the test mode requires drilling holes in the surrounding rock of the tunnel, and only the part with complete rock mass and flat surface is tested after the holes are drilled; the drilling takes longer construction time, and is not beneficial to TBM construction; meanwhile, the method is not beneficial to acquiring a large number of mechanical parameters of the tunnel surrounding rock in different tunneling mileage.
In view of this, the device for quickly and automatically measuring the rock mechanical parameters is designed and created, the device is installed on the TBM, and the device starts to automatically test the rock mass and obtain the surrounding rock mechanical parameters when the TBM stops propelling. The device and the method can solve the defect of drilling and coring, can fully automatically test rock mass mechanical parameters of surrounding rocks along the whole tunnel along the TBM tunneling process, and can quickly acquire a large amount of test data.
Disclosure of Invention
In order to solve the technical problems, the invention provides a device for quickly and automatically measuring rock mechanical parameters and a method for carrying out in-situ test on an engineering rock by using the device. The device utilizes hydraulic pressure to make the propulsion oil cylinder and the top conical pressure head act on the rock mass, mass load-displacement data and curves of the rock mass in different tunneling mileage are obtained, and the obtained data are converted into mechanical parameters of the rock mass, such as uniaxial compressive strength, modulus, brittleness and the like. The parameters can be used for designing a tunnel supporting scheme and can also be used for predicting the mechanical properties of the rock mass within a certain range of a measured section; meanwhile, the rock mechanical parameters can also provide reference for numerical simulation.
The technical scheme provided by the invention is as follows:
the invention aims to provide a quick and automatic measuring device for mechanical parameters of an engineering rock mass, which is carried on TBM equipment and comprises an penetrometer (1), a real-time positioning sensing system (2), a display (3), a hydraulic loading system (4) and a control system (5);
the penetrometer (1) comprises a conical pressure head (11), a jack (12), a bearing base (13), a pressure sensor (14) and a displacement sensor (15);
the jack (11) comprises an upper frame and a lower frame, the upper frame and the lower frame are arranged on a bearing base (13), the top surface of the jack is provided with a conical pressure head (11), a built-in pressure sensor (14) and an external displacement sensor (15);
the penetrometer (1) is in contact with a rock wall by using a conical pressure head (11), and pressure and displacement data in a loading process are acquired by a pressure sensor (14) and a displacement sensor (15);
the penetrometer (1) is connected to a hydraulic loading system (4) to provide loading hydraulic pressure;
the penetrometer (1), the real-time positioning sensing system (2), the display (3) and the hydraulic loading system (4) are connected to the control system (5).
Further, in the present invention,
a pressure sensor (14) is arranged in a frame on the upper portion of the jack (12), a pressure sensor interface (110) is arranged on an opening of the side wall, and a conical pressure head (11) is arranged at the top of the jack.
Further, in the present invention,
the lower frame comprises a sliding inner container (the upward inclined line part of the lower frame in figure 4) and a shell (the downward inclined line part of the lower frame in figure 4); the sliding inner container is an open cylinder, and annular convex edges are arranged in the middle and at the lower end of the sliding inner container; the shell is of a U-shaped structure, and the upper edge of the shell extends towards the sliding inner container and forms a closed structure with the upper edge of the sliding inner container;
the inner cavity of the sliding inner container is a jack column-shaped cavity (127); the middle and lower end ribs of the sliding inner container divide the cavity of the outer wall of the sliding inner container and the inner wall of the shell into a jack pressure relief oil cylinder (118), an annular cavity (120) and a jack pressure oil cylinder (121) from top to bottom; the side surface of the pressure relief oil cylinder (118) is communicated with an oil outlet oil way interface (111); the jack pressurizing oil cylinder (121) is communicated with an oil inlet channel connector (112) arranged on the bearing base (13); the lower end of the pressure sensor (14) is spirally connected with the inner wall of the upper end of the sliding inner container. The cavity and the oil cylinder are not communicated with each other. The sliding inner container can realize vertical sliding through pressurization and pressure relief, and drives the upper frame to slide together.
Further, in the present invention,
of the upper frame of the jack (12)
Further, in the present invention,
the displacement sensor comprises a displacement sensor probe (122), a displacement sensor housing (123), a probe bayonet (124) and a displacement monitoring element (125);
the displacement sensor probe (122) is arranged in the displacement sensor shell (123) and limited by a probe bayonet (124), the tail part of the displacement sensor probe is connected to a displacement monitoring element (125), and the displacement monitoring element (125) is connected to the tail part of the displacement sensor shell by a spring (126);
the head of the displacement sensor probe (122) is connected to the upper frame of the jack through a displacement monitoring fixing plate (17), and the side wall of the displacement sensor shell (123) is connected to the lower frame of the jack through a displacement monitor fixing ring (19).
Further, in the present invention,
the liquid real-time positioning sensing system (2) comprises a data interface (21), a system box shell (22), a positioning device (23), a timer (24) and a signal sensor (25);
the positioning device (23), the timer (24) and the signal sensor (25) are arranged in the system box shell (22) and are electrically connected;
the data of the signal sensor is transmitted to the control system from the data interface through a cable.
Further, the positioning device (23) is a GPS positioner.
Further, the hydraulic loading system (4) is a hydraulic oil cylinder.
Further, the control system (5) is a computing device with data processing capabilities.
Further, the penetrometer (1) is provided with a penetrometer handle (18).
The invention also aims to provide a method for carrying out in-situ test on the engineering rock mechanical parameters by utilizing the quick automatic measuring device for the engineering rock mechanical parameters, which comprises the following steps:
s1, fixing the penetrometer
The penetrometer is fixed on a steel plate with high rigidity of the TBM, and baffles with certain thickness are added around the system to protect the system from collision in the test process;
s2 quick automatic measuring device for mechanical parameters of rock mass in assembling and connecting engineering
S2.1, screwing down the conical pressure head;
s2.2, connecting all the parts;
s2.3, connecting an oil way interface;
s3, in-situ testing of mechanical parameters of engineering rock mass
S3.1, starting a display, a real-time positioning sensing system, a hydraulic loading system and a control system;
s3.2, the real-time positioning sensing system sends a signal to the control system, the hydraulic loading system is controlled by the control system to load or unload the penetrometer (1) so as to realize the telescopic implementation test of the conical pressure head (11), and pressure and displacement data collected by the sensor are transmitted to the control system (5);
repeating S3, and carrying out in-situ test on surrounding rocks with different tunneling mileage;
s4, data processing
And deriving pressure load and displacement data in the test process, processing to obtain a load-displacement curve, and establishing a relation between rock mechanical parameters by using the pressure load-displacement curve.
The function and the working principle of each part are as follows:
the penetrometer utilizes the conical pressure head to directly contact with the rock wall, and realizes extension and retraction through loading and unloading of the oil cylinder so as to carry out testing. The pressure sensor acquires pressure data, and the displacement sensor acquires displacement data and transmits the displacement data to the control system for processing.
And the positioning device in the real-time positioning sensing system is arranged near the test part, positions the position coordinates of the test device and is used for judging whether the TBM is driven forwards or not according to whether the coordinates change or not. And when the TBM is used for tunneling, the testing device does not work. The timer starts timing by taking the point that the TBM stops tunneling forwards as 0 point, and after the timing exceeds 1 minute, a time signal is transmitted to the control system through the signal converter, and the control system judges that the TBM is in a stop state through time so as to make a test starting command. When the penetrometer is in a testing state, if the TBM starts tunneling, the control system judges that the TBM is in a working state according to the position change of the positioning device, and then a test stopping instruction is given.
The hydraulic loading system is used for providing hydraulic pressure for the penetrometer.
The control system is used for controlling, processing and calculating each part and comprises the following three aspects: firstly, receiving a signal of a real-time positioning sensing system; secondly, controlling the penetrometer to perform loading tests at different tunneling mileage sections to obtain load-displacement data and curves; and thirdly, controlling the pressurization and pressure relief of the hydraulic loading system to control and finish the test of the whole device.
The display is used for displaying a pressure load-displacement curve, and when a first obvious load peak value appears or the penetration displacement reaches a set value, the control system can stop loading.
The invention has the beneficial effects that:
the device provided by the invention is simple and light, all systems work coordinately, the defect of drilling test can be avoided, the automation degree is high, unmanned test can be realized, and the errors of manual test and the influence on TBM construction during test are avoided. The conical probe is fixed by threads and can be replaced simply and quickly. The device can acquire pressure and displacement data for in-situ testing and analysis of rock mechanics parameters.
The testing method provided by the invention is simple to operate, realizes the unmanned test of the in-situ test, and can quickly and automatically acquire the rock mechanical parameters along the whole tunneling tunnel.
The invention has wide practicability and engineering application prospect in the aspect of in-situ test and research of mechanical parameters of engineering rock mass.
Drawings
In order to more clearly illustrate the device and the method for testing the mechanical parameters of the engineering rock mass, the following drawings are provided and used, and comprise:
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a schematic diagram of the connections of the systems of the present invention;
in FIG. 3, FIG. 3a and FIG. 3b are a front view and a top view, respectively, of a penetrometer according to the invention;
FIG. 4 is a cross-sectional view of a penetrometer of the invention;
FIG. 5 is a schematic diagram of the internal components of the real-time location awareness system of the present invention.
Icon:
1-penetrometer, 11-conical pressure head, 12-jack, 13-pressure bearing base, 14-pressure sensor, 15-displacement sensor, 16-jack upper frame, 17-displacement monitoring fixing plate, 18-penetrometer handle, 19-displacement monitor fixing ring, 110-pressure sensor interface, 111-oil outlet oil path interface, 112-oil inlet oil path interface, 113-displacement sensor transmission line, 114-base positioning hole, 115-conical pressure head threaded hole, 116-pressure sensor threaded hole, 117-jack measuring range bayonet, 118-jack pressure relief oil cylinder, 119-sealing ring, 120-annular cavity, 121-jack pressure cylinder, 122-displacement sensor probe, 123-displacement sensor shell, 124-probe bayonet, 125-displacement monitoring element, 126-spring, 127-jack cylindrical cavity;
2-a real-time positioning sensing system, 21-a data interface, 22-a system box shell, 23-a positioning device, 24-a timer and 25-a signal converter;
3-a display;
4-a hydraulic loading system;
5-control the system.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are further described below with reference to the accompanying drawings.
As shown in figure 1, the device is carried at a position (between a rock wall and a TBM outer wall) where TBM equipment has higher rigidity and normal construction is not influenced, and comprises an penetrometer 1, a real-time positioning sensing system 2, a display 3, a hydraulic loading system 4 and a control system 5;
first, the penetrometer 1, as shown in fig. 3 and 4
The penetrometer 1 comprises a conical pressure head 11, a jack 12, a bearing base 13, a pressure sensor 14 and a displacement sensor 15;
the jack 11 comprises an upper frame and a lower frame which are arranged on the bearing base 13, and the top surface of the jack is spirally connected with a conical pressure head 11 through a threaded hole 115.
The upper frame of the jack 12 is used for propelling, a pressure sensor 14 is arranged in the jack, and a pressure sensor interface 110 is arranged on a side wall opening.
The lower frame of the jack 12 comprises a sliding inner container (the upward inclined line part of the lower frame in figure 4) and a shell (the downward inclined line part of the lower frame in figure 4); the sliding inner container is an open cylinder, and annular convex edges are arranged in the middle and at the lower end of the sliding inner container; the shell is of a U-shaped structure, and the upper edge of the shell extends towards the sliding inner container and forms a closed structure with the upper edge of the sliding inner container.
The inner cavity of the sliding inner container is a jack cylindrical cavity 127; the middle and lower end ribs of the sliding inner container divide the cavity of the outer wall of the sliding inner container and the inner wall of the shell into a jack pressure relief oil cylinder 118, an annular cavity 120 and a jack pressure oil cylinder 121 from top to bottom; the side surface of the pressure relief oil cylinder 118 is communicated with an oil outlet oil way interface 111; the jack pressurizing oil cylinder 121 is communicated with an oil inlet channel interface 112 arranged on the bearing base 13; the lower end of the pressure sensor 14 is spirally connected with the inner wall of the upper end of the sliding inner container. The cylinder is sealed with a seal ring 119. The bearing base 13 is provided with 4 base positioning holes 114 for positioning and installing the penetrometer 1.
The lower frame is also provided with a jack range bayonet 117.
The displacement sensor comprises a displacement sensor probe 122, a displacement sensor housing 123, a probe bayonet 124 and a displacement monitoring element 125;
the displacement sensor probe 122 is arranged in a displacement sensor shell 123 and limited by a probe bayonet 124, the tail part of the displacement sensor probe is connected to a displacement monitoring element 125, and the displacement monitoring element 125 is connected to the tail part of the displacement sensor shell through a spring 126;
the head of the displacement sensor probe 122 is connected to the upper frame of the jack through the displacement monitoring fixing plate 17, and the side wall of the displacement sensor shell 123 is connected to the lower frame of the jack through the displacement monitoring fixing ring 19.
The penetrometer 1 is provided with a penetrometer handle 18 which is designed integrally with a displacement monitor fixing ring 19.
The penetrometer 1 utilizes the conical pressure head 11 to contact the rock wall, and pressure and displacement data in the loading process are obtained through the pressure sensor 14 and the displacement sensor 15.
Second, the real-time positioning sensing system 2, as shown in FIG. 5
The real-time positioning sensing system 2 comprises a data interface 21, a system box shell 22, a positioning device 23, a timer 24 and a signal sensor 25;
the positioning device 23, the timer 24 and the signal sensor 25 are arranged in the system box shell 22 and are electrically connected;
the data of the signal sensor is transmitted to the control system from the data interface through a cable.
Preferably, the positioning device 23 is a GPS locator.
Third, display 3
Real-time data and curves are displayed.
Fourth, hydraulic loading system 4
The hydraulic loading system 4 is a hydraulic oil cylinder and provides hydraulic pressure for the penetrometer 1.
Fifth, control system 5
The control system 5 is a computing device with data processing capabilities.
Sixth, connection relationship
The penetrometer 1, the real-time positioning sensing system 2, the display 3 and the hydraulic loading system 4 are connected to the control system 5.
The method for carrying out in-situ test on the mechanical parameters of the engineering rock by utilizing the device comprises the following steps:
s1, fixing the penetrometer
The penetrometer is fixed on a steel plate with high rigidity of the TBM, and baffles with certain thickness are added around the system to protect the system from collision in the test process;
s2 quick automatic measuring device for mechanical parameters of rock mass in assembling and connecting engineering
S2.1, screwing down the conical pressure head;
s2.2, connecting all the parts, wherein the connecting effect is shown in figure 2;
s2.3, connecting an oil way interface;
s3, in-situ testing of mechanical parameters of engineering rock mass
S3.1, starting a display, a real-time positioning sensing system, a hydraulic loading system and a control system;
s3.2, the real-time positioning sensing system sends a signal to the control system, the hydraulic loading system is controlled by the control system to load or unload the penetrometer 1 so as to realize the telescopic implementation test of the conical pressure head 11, and pressure and displacement data collected by the sensor are transmitted to the control system 5;
and repeating S3, and carrying out in-situ test on the surrounding rock with different tunneling mileage.
S4, data processing
And deriving pressure load and displacement data in the test process, processing to obtain a load-displacement curve, and establishing a relation between rock mechanical parameters by using the pressure load-displacement curve.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made by those skilled in the art within the technical scope of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a quick automatic measuring device of engineering rock mass mechanics parameter which characterized in that:
the device is carried on TBM equipment and comprises an penetrometer (1), a real-time positioning sensing system (2), a display (3), a hydraulic loading system (4) and a control system (5);
the penetrometer (1) comprises a conical pressure head (11), a jack (12), a bearing base (13), a pressure sensor (14) and a displacement sensor (15);
the jack (11) comprises an upper frame and a lower frame, the upper frame and the lower frame are arranged on a bearing base (13), the top surface of the jack is provided with a conical pressure head (11), a built-in pressure sensor (14) and an external displacement sensor (15);
the penetrometer (1) is in contact with a rock wall by using a conical pressure head (11), and pressure and displacement data in a loading process are acquired by a pressure sensor (14) and a displacement sensor (15);
the penetrometer (1) is connected to a hydraulic loading system (4) to provide loading hydraulic pressure;
the penetrometer (1), the real-time positioning sensing system (2), the display (3) and the hydraulic loading system (4) are connected to the control system (5).
2. The device for rapidly and automatically measuring mechanical parameters of engineering rock mass according to claim 1, is characterized in that: a pressure sensor (14) is arranged in a frame on the upper portion of the jack (12), a pressure sensor interface (110) is arranged on an opening of the side wall, and a conical pressure head (11) is arranged at the top of the jack.
3. The device for rapidly and automatically measuring mechanical parameters of engineering rock mass according to claim 1, is characterized in that: the lower frame of the jack (12) comprises a sliding inner container and a shell; the sliding inner container is an open cylinder, and annular convex edges are arranged in the middle and at the lower end of the sliding inner container; the shell is of a U-shaped structure, and the upper edge of the shell extends towards the sliding inner container and forms a closed structure with the upper edge of the sliding inner container;
the inner cavity of the sliding inner container is a jack column-shaped cavity (127); the middle and lower end ribs of the sliding inner container divide the cavity of the outer wall of the sliding inner container and the inner wall of the shell into a jack pressure relief oil cylinder (118), an annular cavity (120) and a jack pressure oil cylinder (121) from top to bottom; the side surface of the pressure relief oil cylinder (118) is communicated with an oil outlet oil way interface (111); the jack pressurizing oil cylinder (121) is communicated with an oil inlet channel connector (112) arranged on the bearing base (13); the lower end of the pressure sensor (14) is spirally connected with the inner wall of the upper end of the sliding inner container.
4. The device for rapidly and automatically measuring mechanical parameters of engineering rock mass according to claim 1, is characterized in that: a pressure sensor (14) is arranged in the upper frame of the jack (12), a pressure sensor interface (110) is arranged on the side wall of the upper frame, and a conical pressure head (11) is arranged at the top of the upper frame.
5. The device for rapidly and automatically measuring mechanical parameters of engineering rock mass according to claim 1, is characterized in that: the displacement sensor comprises a displacement sensor probe (122), a displacement sensor housing (123), a probe bayonet (124) and a displacement monitoring element (125);
the displacement sensor probe (122) is arranged in the displacement sensor shell (123) and limited by a probe bayonet (124), the tail part of the displacement sensor probe is connected to a displacement monitoring element (125), and the displacement monitoring element (125) is connected to the tail part of the displacement sensor shell by a spring (126);
the head of the displacement sensor probe (122) is connected to the upper frame of the jack through a displacement monitoring fixing plate (17), and the side wall of the displacement sensor shell (123) is connected to the lower frame of the jack through a displacement monitor fixing ring (19).
6. The device for rapidly and automatically measuring mechanical parameters of engineering rock mass according to claim 1, is characterized in that: the liquid real-time positioning sensing system (2) comprises a data interface (21), a system box shell (22), a positioning device (23), a timer (24) and a signal sensor (25);
the positioning device (23), the timer (24) and the signal sensor (25) are arranged in the system box shell (22) and are electrically connected;
the data of the signal sensor is transmitted to the control system from the data interface through a cable.
7. The device for rapidly and automatically measuring mechanical parameters of engineering rock according to claim 5, is characterized in that: the positioning device (23) is a GPS positioner.
8. The device for rapidly and automatically measuring mechanical parameters of engineering rock mass according to claim 1, is characterized in that: the hydraulic loading system (4) is a hydraulic oil cylinder.
9. The device for rapidly and automatically measuring mechanical parameters of engineering rock mass according to claim 1, is characterized in that: the control system (5) is a computing device with data processing capabilities.
10. A method for carrying out in-situ test on engineering rock mechanical parameters by using the quick automatic measuring device for the engineering rock mechanical parameters of claim 1 comprises the following steps:
s1, fixing the penetrometer
The penetrometer is fixed on a steel plate with high rigidity of the TBM, and baffles with certain thickness are added around the system to protect the system from collision in the test process;
s2 quick automatic measuring device for mechanical parameters of rock mass in assembling and connecting engineering
S2.1, screwing down the conical pressure head;
s2.2, connecting all the parts;
s2.3, connecting an oil way interface;
s3, in-situ testing of mechanical parameters of engineering rock mass
S3.1, starting a display, a real-time positioning sensing system, a hydraulic loading system and a control system;
s3.2, the real-time positioning sensing system sends a signal to the control system, the hydraulic loading system is controlled by the control system to load or unload the penetrometer (1) so as to realize the telescopic implementation test of the conical pressure head (11), and pressure and displacement data collected by the sensor are transmitted to the control system (5);
repeating S3, and carrying out in-situ test on surrounding rocks with different tunneling mileage;
s4, data processing
And deriving pressure load and displacement data in the test process, processing to obtain a load-displacement curve, and establishing a relation between rock mechanical parameters by using the pressure load-displacement curve.
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| CN202010363954.4A CN111474060B (en) | 2020-04-30 | 2020-04-30 | Quick and automatic measuring device for engineering rock mechanical parameters and application method |
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|---|---|---|---|
| CN202010363954.4A CN111474060B (en) | 2020-04-30 | 2020-04-30 | Quick and automatic measuring device for engineering rock mechanical parameters and application method |
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| CN111474060B CN111474060B (en) | 2021-12-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112345360A (en) * | 2020-11-18 | 2021-02-09 | 同济大学 | Surrounding rock in-situ testing device and method |
| CN112461668A (en) * | 2020-11-06 | 2021-03-09 | 武汉大学 | Test method for researching hydraulic fracturing induced fault activation |
| CN113504121A (en) * | 2021-06-16 | 2021-10-15 | 同济大学 | Built-in surrounding rock in-situ testing device and method for TBM supporting shoes |
| CN114112740A (en) * | 2021-11-12 | 2022-03-01 | 中国矿业大学(北京) | Portable coal rock impact tendency testing device and method |
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| CN112461668A (en) * | 2020-11-06 | 2021-03-09 | 武汉大学 | Test method for researching hydraulic fracturing induced fault activation |
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| CN113504121A (en) * | 2021-06-16 | 2021-10-15 | 同济大学 | Built-in surrounding rock in-situ testing device and method for TBM supporting shoes |
| CN113504121B (en) * | 2021-06-16 | 2022-06-17 | 同济大学 | Built-in surrounding rock in-situ testing device and method for TBM supporting shoes |
| CN114112740A (en) * | 2021-11-12 | 2022-03-01 | 中国矿业大学(北京) | Portable coal rock impact tendency testing device and method |
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