AU2018338596A1 - In-situ microscopic observation device and method for micro-fractures of engineering rock mass - Google Patents
In-situ microscopic observation device and method for micro-fractures of engineering rock mass Download PDFInfo
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Abstract
The present invention relates to an in-situ microscopic observation device and method for micro-fractures in surrounding rock of engineering rock mass. During operation of the observation device, a microprobe is driven by a rotating motor to circumferentially rotate within a borehole; after each turn of rotation, a control box controls an advancing mechanism to advance along a guide rail, and the microprobe axially advances along the borehole by a sight distance with the advancing mechanism. The above steps are repeated, until the whole borehole is completely observed. By replacing a conventional observation probe by the microprobe, the present invention achieves observation of micro-fractures in in-situ rock mass of a roadway, effectively avoids defects in laboratory observation, and obtains a real distribution of the micro-fractures in surrounding rock, providing important direction for the research of grouting support in a roadway and so on. By means of a multi-module joint control method, the present invention can control a microprobe to rotate and advance automatically, effectively solves harsh manual operation conditions caused by a narrow observation area of the microprobe, and effectively reduces manpower and complexity in use.
Description
IN-SITU MICROSCOPIC OBSERVATION DEVICE AND METHOD FOR MICRO-FRACTURES OF ENGINEERING ROCK MASS
BACKGROUND OF THE INVENTION
Field of the Invention
The present invention relates to an observation device and method for micro-fractures of engineering rock mass, and in particular, relates to an in-situ microscopic observation device and method for micro-fractures in surrounding rock of engineering rock mass, which belongs to the field of control of engineering rock mass.
Description of Related Art
In underground engineering such as underground coal mining and tunnel construction, insitu fissure observation is widely used as an important technical means. By acquiring the development state of fissures of engineering rock mass, especially micro-fractures of engineering rock mass, the in-situ fissure observation can provide a basis for obtaining the initial damage of rock mass and the study on evolution of the micro-fractures after loading, provide a reliable technical support for stability control on surrounding rock and disaster prevention, and play a very important role in technologies such as grouting reinforcement and water plugging at a construction site.
However, the in-situ observation on fissures in surrounding rock has the following problems:
1. The underground in-situ fissure observation device mainly adopts a traditional borehole peeper, and a peeper probe used in the traditional borehole peeper can only capture a distribution of macroscopic fissures larger than 1 mm in size, and not a distribution of microfractures having a size of 0.01 mm. For example, Chinese patent CN106437680A discloses an observation device. Although the device achieves in-situ observation on fissures, the device can only capture macroscopic fissures that can be observed by naked eyes, and not microfractures having a smaller size. Therefore, a conventional in-situ observation device cannot acquire the distribution of micro-fractures in underground surrounding rock.
2. Most of the existing micro-fracture observations are indoor laboratory observations after field sampling. For example, Chinese patent CN103163134A discloses a device and technique, in which samples are taken back to a laboratory for observation. Although a distribution of micro-fractures of rock can be obtained, this method leads to destruction of rock and fails to obtain a real distribution of in-situ fissures of the surrounding rock.
3. A microprobe with a high magnification is needed to observe micro-fractures, but the microprobe can only have a very small field of view because of its high magnification. The original fissure observation devices mostly use manual pushing of a probe for observation, which is obviously not applicable for the microprobe.
Therefore, there is a need for a device and method for in-situ observation on microfractures in surrounding rock, in which micro-fractures in surrounding rock can be observed, and also the device can be operated automatically, achieving automatic observation.
SUMMARY OF THE INVENTION
In view of the defects in the conventional technology, the present invention provides an in-situ observation device and method for micro-fractures in surrounding rock, which is designed reasonably and easy to use, can accurately obtain micro-fractures in in-situ rock mass, and can realize automatic observation.
The technical solution adopted by the present invention is: a device enabling in-situ observation on micro-fractures in surrounding rock, including: a rotating motor, a turntable, a guide rail, an advancing mechanism, a control box, a microprobe, a device housing, and a computer. The device housing is a transparent cylindrical structure, and the rotating motor is fixed at the innermost end of the device housing; the turntable is rotatably connected to the device housing, and the rotating motor is in drive connection with the turntable; one end of the guide rail is fixed on the turntable, the advancing mechanism is installed on the guide rail, the control box and the microprobe are both installed on the advancing mechanism, the microprobe and the advancing mechanism are both connected to the control box via wires, and the control box is wirelessly connected to the computer; a central axis in a lens of the microprobe perpendicularly intersects with a central axis of the device housing; during the operation of the observation device, the microprobe is driven by the rotating motor to circumferentially rotate within a borehole; after each turn of rotation, the control box controls the advancing mechanism to advance along the guide rail, and the microprobe axially advances along the borehole by a sight distance with the advancing mechanism. The above steps are repeated, until the whole borehole is completely observed.
The rotating motor controls the turntable to rotate via a gear set, the gear set includes a first gear installed on an output shaft of the rotating motor and a second gear sleeved on the turntable, the first gear is engaged with the second gear, and the rotating motor is connected to the turntable in drive reduction. A step motor is adopted as the rotating motor, and the step motor can accurately control the rotating angle, and ensure that the microprobe can rotate for one turn along the device housing. A rotating shaft is installed at the center of the turntable, and the rotating shaft is connected to an end face of the device housing via a bearing block.
One end of the guide rail is fixed to the turntable, and the other end of the guide rail is close to a port of the device housing. The guide rail is provided with a track slot configured to provide a walking track for the advancing mechanism, and a limit slot configured to limit and guide the advancing mechanism.
The advancing mechanism includes an advancing motor and an advancing gear set. The advancing gear set includes a gear at the output end of the advancing motor, a connecting rod gear, a connecting rod, and two advancing gears. The connecting rod gear is connected to the two advancing gears via the connecting rod, and the connecting rod gear is engaged with the output gear of the motor. A step motor is adopted as the advancing motor, and the step motor can accurately control the advancing distance, and ensure that the microprobe can advance by a sight distance along the guide rail.
The control box is composed of a main control module, a rotating module, an advancing module, a focusing module, an image processing module, a power supply module, and a wireless transmission module, wherein: the main control module is configured to receive instructions issued by the computer and to control the modules; the rotating module is configured to control the rotating motor to rotate, and define a desired rotating angle by the computer to complete rotation of the microprobe; the advancing module is configured to control the advancing mechanism to advance, and define a desired advancing distance by the computer to complete advancement of the microprobe; the focusing module is configured to accurately control focusing of the microprobe to obtain a desirable observation effect; the image processing module is configured to process image information collected by the microprobe to be transmitted; the power supply module is configured with a storage battery to power the whole control box and the microprobe; and the wireless transmission module is configured for wireless connection and information transmission between the modules and the computer to enable the computer to wirelessly operate the control box, and for transmission of the image information collected by the microprobe to the computer.
The microprobe is installed at one side of the control box, the lens of the microprobe is close to an inner wall of the device housing, and a path of one turn of rotation of the lens is slightly smaller than an inner diameter of the device housing. A variable-focus microprobe is adopted as the microprobe, and is required to have a sufficiently large magnification and pixel. A microscope having a model of Dino-LiteAM4113T is adopted, with 8 in-built LED lamps, a working distance of 9 mm, and a field of view of 10 mm* 8 mm.
The device housing employs a high hardness toughened glass, which can ensure the safe observation of the microprobe and also the observation effect required by the microprobe. The diameter of the device housing is slightly smaller than the diameter of the borehole, and the length of the device housing is greater than the depth of the borehole, thereby ensuring that the axis of the device housing generally coincides with the axis of the borehole.
The computer is configured to implement remote operations on the modules in the control box through the main control module, and transmit image information collected by the microprobe to the computer through the wireless transmission module for storage and for later further analysis.
The present invention also proposes a method, which includes the following specific steps:
Step 1: drilling a borehole in a target observation area of surrounding rock, observing the borehole formation effect after borehole formation, checking whether collapse and blockage exist, and if so, cleaning out borehole in time;
Step 2: after fixing the rotating motor, the turntable, and the guide rail, installing the advancing mechanism and the control box on the guide rail, connecting the microprobe to the control box, and finally ensuring that the central axis of the lens of the microprobe installed on the guide rail perpendicularly intersects with the central axis of the device house 7; and after further confirmation, putting the device into the borehole;
Step 3: performing, by the computer, remote operation on the control box , including: firstly, after controlling the power supply module to turn on the power supply, adjusting the focal length of the microprobe by controlling the focusing module, and starting observation after the optimal observation effect is achieved; by controlling the rotating module, activating the rotating motor to drive the turntable to rotate, such that the microprobe rotates for one turn at a uniform speed along with the guide rail according to a set rotation angle; secondly, controlling the advancing module to activate the advancing mechanism, such that the microprobe advances by a sight distance with the control box along the guide rail according to a designed advancing distance, thereby completing an observation cycle, and then repeating the cycle; and
Step 4: processing, by the image processing module, image information captured by the microprobe during the observation, and transmitting the processed image information via the wireless transmission module to the computer for storage and for later further analysis.
The advantages and beneficial effects of the present invention are:
1. By replacing a conventional observation probe by a microprobe with a high magnification effect, the present invention achieves observation of micro-fractures in in-situ rock mass of a roadway, effectively avoids defects in laboratory observation, and obtains a real distribution of the micro-fractures in surrounding rock, providing important direction for the research of grouting support in a roadway and so on.
2. By means of a multi-module joint control method, the present invention achieves automated control of observation, can control the microprobe to rotate and advance automatically, effectively solves harsh manual operation conditions caused by a narrow observation area of the microprobe, and effectively reduces manpower and complexity in use.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic view of a device according to the present invention.
FIG. 2 is a sectional view along A-A according to the present invention.
FIG. 3 is a sectional view along B-B according to the present invention.
FIG. 4 is a schematic operation diagram of a gear set of an advancing mechanism according to the present invention.
FIG. 5 is a schematic operation diagram of a control box according to the present invention.
In the figures: 1. rotating motor; 2. turntable; 3. guide rail; 4. advancing mechanism; 5. control box; 6. microprobe; 7. device housing; 8. computer; 9. borehole; 41. output shaft gear;
42. connecting rod gear; 43. connecting rod ; 44. advancing gear; 51. main control module; 52. rotating module; 53. advancing module; 54. focusing module; 55. image processing module; 56. power supply module; 57. wireless transmission module.
DETAILED DESCRIPTION OF THE INVENTION
The present invention is further described below with reference to the accompanying drawings.
The technical solution adopted by the present invention is: a device enabling in-situ observation on micro-fractures in surrounding rock, including: a rotating motor 1, a turntable 2, a guide rail 3, an advancing mechanism 4, a control box 5, a microprobe 6, a device housing 7, and a computer 8. The device housing 7 is a transparent cylindrical structure, and the rotating motor 1 is fixed at the innermost end of the device housing 7; the turntable 2 is rotatably connected to the device housing 7, and the rotating motor 1 is in drive connection with the turntable 2; one end of the guide rail 3 is fixed on the turntable 2, the advancing mechanism 4 is installed on the guide rail 3, the control box 5 and the microprobe 6 are both installed on the advancing mechanism 4, the microprobe 6 and the advancing mechanism 4 are both connected to the control box 5 via wires, and the control box 5 is further connected to the computer 8 via a wire; a central axis in a lens of the microprobe 6 perpendicularly intersects a central axis of the device housing 7; during the operation of the observation device, the rotating motor 1 drives the turntable 2 and the guide rail 3 to rotate together, the microprobe 6 is driven by the rotating motor 1 to circumferentially rotate within a borehole 6; after each turn of rotation, the control box 5 controls the advancing mechanism 4 to advance along the guide rail 3, and the microprobe 6 axially advances along the borehole 9 by a sight distance with the advancing mechanism 4. The above steps are repeated, until the whole borehole 9 is completely observed.
The microprobe 6 can, based on the rotation of the turntable 2, achieve circumferential rotation in the borehole 9 along with the guide rail 3; and the microprobe 6 can, based on the advancing mechanism 4, achieve axial advancement on the guide rail 3 along with the control box 5.
The rotating motor 1 controls the turntable 2 to rotate via a gear set, the gear set includes a first gear installed on an output shaft of the rotating motor 1 and a second gear sleeved on the turntable 2, the diameter of the first gear is smaller than the diameter of the second gear, and the rotating motor 1 is connected to the turntable 2 in drive reduction. The rotating motor 1 is powered on to drive the first gear on the output shaft to rotate, and further to drive the second gear engaged with the first gear to rotate, and the rotation of the second gear causes the turntable 2 connected thereto to rotate, thereby enabling the guide rail 3 fixed on the turntable 2 to rotate. A step motor is adopted as the rotating motor 1, and the step motor can accurate control the rotating angle, and ensure that the microprobe 6 can rotate for one turn along the device housing
7. The rotating motor 1 is controlled by the computer 8 by means of the rotating module 52 of the control box 5.
A rotating shaft is installed at the center of the turntable 2, and the rotating shaft is connected to an end face of the device housing 7 via a bearing block.
One end at an inner side of the guide rail 3 is fixed on the turntable 2, and the advancing mechanism 4 and the control box 5 are installed on the guide rail 3, for providing a track to advance the microprobe 6. The guide rail 3 can rotate based on the turntable 2, and under the drive of the turntable 2, the microscopic probe 6 rotates along with the guide rail 3. By means of the advancing mechanism 4, the microprobe 6 can achieve advancement with the control box 5 along the guide rail 3.
The guide rail 3 is provided with a track slot configured to provide a walking track for the advancing mechanism, and a limit slot configured to limit and guide the advancing mechanism.
The limit slot is arranged on two sides of the advancing mechanism, corresponding to an opening at one side of the advancing mechanism.
A transverse connection plate is connected at the two sides of the advancing mechanism, and a roller is installed on the connection plate. The connection plate and the roller extend into the limit slot and move along the limit slot.
The advancing mechanism 4 includes an advancing motor and an advancing gear set, and the control box 5 is fixed on the advancing mechanism 4, such that the advancing mechanism 4 can advance along the guide rail 3, thereby achieving the advancement of the microprobe 6 on the control box 5 along the guide rail 3. The advancing motor advances by connecting to the advancing gear set. The advancing gear set includes a gear 41 at the output end of the advancing motor, a connecting rod gear 42, a connecting rod 43, and two advancing gears 44. The advancing motor is powered on to drive the gear 41 on the output shaft to rotate, and further to drive the connecting rod gear 42 engaged with the gear to rotate, and since the connecting rod gear 42 is connected to the two advancing gears 44 through the connecting rod 43, the advancing gear 44 is driven by the connecting rod gear 42 to rotate, thereby achieving advancement. A step motor is adopted as the advancing motor, and the step motor can accurately control an advancing distance, and ensure that the microprobe 6 advances by a sight distance along the guide rail 3, and the advancing mechanism 4 is controlled by the computer 8 by means of the advancing module 53 of the control box 5. A tooth-shaped track is arranged within the track slot, and the tooth-shaped track is engaged with the advancing gear 44.
The control box 5 is fixed on the advancing mechanism 4, installed with the microprobe 6 thereon, and can advance on the guide rail 3 along with the advancing mechanism 4. It is mainly composed of a main control module 51, a rotating module 52, an advancing module 53, a focusing module 54, an image processing module 55, a power supply module 56, and a wireless transmission module 57, wherein: the main control module 51 is configured to receive instructions issued by the computer 8 and to control the modules; the rotating module 52 is configured to control the rotating motor 1 to rotate, and define a desired rotating angle by the computer 8 to complete rotation of the microprobe 6; the advancing module 53 is configured to control the advancing mechanism 4 to advance, and define a desired advancing distance by the computer 8 to complete advancement of the microprobe 6; the focusing module 54 is configured to accurately control focusing of the microprobe to obtain a desirable observation effect; the image processing module 55 is configured to process image information collected by the microprobe 6 to be transmitted; the power supply module 56 is configured with a storage battery to power the whole control box 5 and the microprobe 6; and the wireless transmission module 57 is configured for wireless connection and information transmission between the modules and the computer 8 to enable the computer 8 to wirelessly operate the control box, and for transmission of the image information collected by the microprobe 6 to the computer
8.
A variable-focus microprobe is adopted as the microprobe 6, and is required to have a sufficiently large magnification and pixel. A microscope having a model of DinoLiteAM4113T is adopted, with in-built 8 LED lamps, a working distance of 9 mm, and a field of view of 10 mm* 8 mm. The microprobe 6 is directly connected to the control box 5, and can be jointly controlled by multiple modules within the control box 5. The microprobe 6 is installed at one side of the control box 5, the lens of the microprobe 6 is close to an inner wall of the device housing 7, and a path of one turn of rotation of the lens is slightly smaller than an inner diameter of the device housing 7.
The computer 8 is configured to implement remote operations on the modules in the control box 5 through the main control module 51, and transmit image information collected by the microprobe 6 to the computer 8 through the wireless transmission module 57, for storage and for later further analysis.
The device housing 7 is a transparent housing, and is made of a high hardness toughened glass, which can ensure the safe observation of the microprobe 6 and also the observation effect required by the microprobe 6. The diameter of the device housing 7 is slightly smaller than the diameter of the borehole, ensuring that device housing 7 can be justly put into the borehole 9. The device housing 7 includes a cylindrical body and an end face installed on one end of the body, and the end face is fixed to the body through a bolt. During assembly of the device, the rotating motor 1 and the turntable 2 are connected to the end face firstly, then the guide rail 3 is connected to the turntable 2, and then the advancing mechanism 4, the control box 5, and the microprobe 6 are installed; after installation is completed, the above device extends from one end of the body into the device housing 7, and then the end face is connected and fixed to the body.
In order to improve the stability of the device, the turntable 2 is connected to the device housing 7 through a slewing bearing; or a movable end of the rail 3 is connected to the device housing 7 through a bearing.
The present invention also proposes a method, including the following specific steps:
Step 1: drilling a borehole in a target observation area of surrounding rock, observing the borehole formation effect after borehole formation, checking whether collapse and blockage exist, and if so, cleaning out borehole in time;
Step 2: after fixing the rotating motor 1, the turntable 2, and the guide rail 3, installing the advancing mechanism 4 and the control box 5 on the guide rail 3, connecting the microprobe 6 to the control box 5, and finally ensuring that the central axis of the lens of the microprobe 6 installed on the guide rail 3 perpendicularly intersects with the central axis of the device house 7; and after further confirmation, putting the device into the borehole 9;
Step 3: performing, by the computer 8, remote operation on the control box 5, including: firstly, after controlling the power supply module 56 to turn on the power supply, adjusting the focal length of the microprobe 6 by controlling the focusing module 54, and starting observation after the optimal observation effect is achieved; by controlling the rotating module 52, activating the rotating motor 1 to drive the turntable 2 to rotate, such that the microprobe 6 rotates for one turn at a uniform speed along with the guide rail 3 according to a set rotation angle; secondly, controlling the advancing module 53 to activate the advancing mechanism 4, such that the microprobe 3 advances by a sight distance with the control box 5 along the guide rail 3 according to a designed advancing distance, thereby completing an observation cycle, and then repeating the cycle; and
Step 4: processing, by the image processing module 55, image information captured by the microprobe 6 during the observation, and transmitting the processed image information via the wireless transmission module 57 to the computer 8 for storage and for later further analysis.
Claims (10)
- What is claimed is:1. A device enabling in-situ observation on micro-fractures in surrounding rock, comprising a rotating motor, a turntable, a guide rail, an advancing mechanism, a control box, a microprobe, a device housing, and a computer, wherein the device housing is a transparent cylindrical structure, and the rotating motor is fixed at the innermost end of the device housing; the turntable is rotatably connected to the device housing, and the rotating motor is in drive connection with the turntable; one end of the guide rail is fixed on the turntable, the advancing mechanism is installed on the guide rail, the control box and the microprobe are both installed on the advancing mechanism, the microprobe and the advancing mechanism are both connected to the control box via wires, and the control box is wirelessly connected to the computer; a central axis in a lens of the microprobe perpendicularly intersects with a central axis of the device housing; during the operation of the observation device, the microprobe is driven by the rotating motor to circumferentially rotate within a borehole; after each turn of rotation, the microprobe axially advances along the borehole by a sight distance with the advancing mechanism, thereby completing an observation cycle, and then the cycle is repeated, until the whole borehole is completely observed.
- 2. The device enabling in-situ observation on micro-fractures in surrounding rock according to claim 1, wherein, the rotating motor controls the turntable to rotate via a gear set, the gear set includes a first gear installed on an output shaft of the rotating motor and a second gear sleeved on the turntable, the first gear is engaged with the second gear, and the rotating motor is connected to the turntable in drive reduction; and a step motor is adopted as the rotating motor.
- 3. The device enabling in-situ observation on micro-fractures in surrounding rock according to claim 1, wherein, a rotating shaft is installed at the center of the turntable, and the rotating shaft is connected to an end face of the device housing via a bearing block.
- 4. The device enabling in-situ observation on micro-fractures in surrounding rock according to claim 1, wherein, one end of the guide rail is fixed to the turntable, and the other end of the guide rail is close to a port of the device housing; the guide rail is provided with a track slot configured to provide a walking track for the advancing mechanism, and a limit slot configured to limit and guide the advancing mechanism.
- 5. The device enabling in-situ observation on micro-fractures in surrounding rock according to claim 1, wherein, the advancing mechanism comprises an advancing motor and an advancing gear set; the advancing gear set comprises a gear at the output end of the advancing motor, a connecting rod gear, a connecting rod, and two advancing gears; the connecting rod gear is connected to the two advancing gears via the connecting rod, and the connecting rod gear is engaged with the output gear of the motor; and a step motor is adopted as the advancing motor.
- 6. The device enabling in-situ observation on micro-fractures in surrounding rock according to claim 1, wherein, the control box is composed of a main control module, a rotating module, an advancing module, a focusing module, an image processing module, a power supply module, and a wireless transmission module, wherein: the main control module is configured to receive instructions issued by the computer and to control the modules; the rotating module is configured to control the rotating motor to rotate, and define a desired rotating angle by the computer to complete rotation of the microprobe; the advancing module is configured to control the advancing mechanism to advance, and define a desired advancing distance by the computer to complete advancement of the microprobe; the focusing module is configured to accurately control focusing of the microprobe to obtain a desirable observation effect; the image processing module is configured to process image information collected by the microprobe to be transmitted; the power supply module is configured with a storage battery to power the whole control box and the microprobe; and the wireless transmission module is configured for wireless connection and information transmission between the modules and the compute to enable the computer to wirelessly operate the control box, and for transmission of the image information collected by the microprobe to the computer.
- 7. The device enabling in-situ observation on micro-fractures in surrounding rock according to claim 1, wherein, the microprobe is installed at one side of the control box , the lens of the microprobe is close to an inner wall of the device housing, and a path of one turn of rotation of the lens is slightly smaller than an inner diameter of the device housing.
- 8. The device enabling in-situ observation on micro-fractures in surrounding rock according to claim 1, wherein, the device housing employs a high hardness toughened glass; the diameter of the device housing is slightly smaller than the diameter of the borehole, and the length of the device housing is greater than the depth of the borehole, thereby ensuring that the axis of the device housing generally coincides with the axis of the borehole.
- 9. The device enabling in-situ observation on micro-fractures in surrounding rock according to claim 1, wherein, the computer is configured to implement remote operations on the modules in the control box through the main control module, and transmit image information collected by the microprobe to the computer through the wireless transmission module for storage and for later further analysis.
- 10. An observation method using the device enabling in-situ observation on micro-fractures in surrounding rock of any one of claims 1-9, specifically comprising:Step 1: drilling a borehole in a target observation area of surrounding rock, observing the borehole formation effect after borehole formation, checking whether collapse and blockage exist, and if so, cleaning out borehole in time;Step 2: after fixing the rotating motor, the turntable, and the guide rail, installing the advancing mechanism and the control box on the guide rail, connecting the microprobe to the control box, and finally ensuring that the central axis of the lens of the microprobe installed on the guide rail perpendicularly intersects with the central axis of the device house; and after further confirmation, putting the device into the borehole;Step 3: performing, by the computer, remote operation on the control box, including: firstly, after controlling the power supply module to turn on the power supply, adjusting the focal length of the microprobe by controlling the focusing module, and starting observation after the optimal observation effect is achieved; by controlling the rotating module, activating the rotating motor to drive the turntable to rotate such that the microprobe rotates for one turn at a uniform speed along with the guide rail according to a set rotation angle; secondly, controlling the advancing module to activate the advancing mechanism, such that the microprobe advances by a sight distance with the control box along the guide rail according to a designed advancing distance, thereby completing an observation cycle, and then repeating the cycle; andStep 4: processing, by the image processing module, image information captured by the microprobe during the observation, and transmitting the processed image information via the wireless transmission module to the computer for storage and for later further analysis.1/4
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711489079.9 | 2017-12-29 | ||
| CN201711489079.9A CN108195759B (en) | 2017-12-29 | 2017-12-29 | In-situ microscopic observation device and method for engineering rock mass microscopic fracture |
| PCT/CN2018/085299 WO2019128015A1 (en) | 2017-12-29 | 2018-05-02 | In-situ micro-observation apparatus and method for engineering rock mass microcosmic |
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| AU2018338596A1 true AU2018338596A1 (en) | 2019-07-18 |
| AU2018338596B2 AU2018338596B2 (en) | 2019-12-19 |
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| CN108195759B (en) * | 2017-12-29 | 2021-03-02 | 中国矿业大学 | In-situ microscopic observation device and method for engineering rock mass microscopic fracture |
| CN111913216B (en) * | 2020-08-03 | 2022-09-20 | 煤炭科学技术研究院有限公司 | Roadway surrounding rock stability force structure cooperative monitoring method influenced by repeated mining |
| CN112302679A (en) * | 2020-10-26 | 2021-02-02 | 中国电建集团成都勘测设计研究院有限公司 | Visual support structure of exploration footrill covering layer hole section and construction method thereof |
| CN115494060B (en) * | 2022-10-17 | 2023-04-11 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队(山东省地矿工程勘察院) | Karst fracture channel surveys device |
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| US4647198A (en) * | 1984-01-30 | 1987-03-03 | Mobil Oil Corporation | Optical reflectance standard for geological exploration |
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| JP2000194040A (en) * | 1998-12-28 | 2000-07-14 | Shimizu Corp | Ccd camera set for investigation |
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| CN103424086B (en) * | 2013-06-30 | 2015-11-18 | 北京工业大学 | A kind of long straight tube inside surface image capture device |
| CN204215097U (en) * | 2014-12-05 | 2015-03-18 | 福建宁德核电有限公司 | A kind of intelligent endoscope drive unit |
| CN204492801U (en) * | 2015-03-12 | 2015-07-22 | 华中科技大学 | A kind of probe of boring imaging system of adjustable focus |
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| CN205591910U (en) * | 2016-04-25 | 2016-09-21 | 长沙理工大学 | Solution cavity detection system |
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| CN206038612U (en) * | 2016-08-26 | 2017-03-22 | 天津阿斯米工程技术有限公司 | Body nondestructive test equipment |
| CN106437680B (en) * | 2016-12-05 | 2023-03-21 | 山东科技大学 | Crack measuring device matched with borehole television imager and using method |
| CN108195759B (en) * | 2017-12-29 | 2021-03-02 | 中国矿业大学 | In-situ microscopic observation device and method for engineering rock mass microscopic fracture |
-
2017
- 2017-12-29 CN CN201711489079.9A patent/CN108195759B/en active Active
-
2018
- 2018-05-02 WO PCT/CN2018/085299 patent/WO2019128015A1/en active Application Filing
- 2018-05-02 AU AU2018338596A patent/AU2018338596B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108195759B (en) | 2021-03-02 |
| CN108195759A (en) | 2018-06-22 |
| AU2018338596B2 (en) | 2019-12-19 |
| WO2019128015A1 (en) | 2019-07-04 |
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