CN102889075A - Coal mine drilling angle measuring system and method - Google Patents
Coal mine drilling angle measuring system and method Download PDFInfo
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- CN102889075A CN102889075A CN2012103616209A CN201210361620A CN102889075A CN 102889075 A CN102889075 A CN 102889075A CN 2012103616209 A CN2012103616209 A CN 2012103616209A CN 201210361620 A CN201210361620 A CN 201210361620A CN 102889075 A CN102889075 A CN 102889075A
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Abstract
The invention provides a coal mine drilling angle measuring system and method; the coal mine drilling angle measuring system comprises a laser reference line transmitting device and a digital angle measuring device, wherein the laser reference line transmitting device is used for generating a first laser plane and a second laser plane, which are vertical to each other; the first laser plane is coincided with an intersecting line of inner walls of a roadway and a midline of the roadway; the second laser plane is intersected with a drill pipe to be measured; the digital angle measuring device is used for measuring the angle of the drill pipe according to the second laser plane; and the digital angle measuring device is arranged on the drill pipe intersected with the second laser plane. Through the adoption of the coal mine drilling angle measuring system and method provided by the invention, the accuracy of drilling angle measuring parameters is enhanced, the construction quality of coal mine gas treatment drill hole is guaranteed, and a gas treatment effect is enhanced.
Description
Technical field
The present invention relates to the underground survey technology, relate in particular to a kind of colliery bore angle measuring system and method.
Background technology
Gas control under the coal mine has become an important topic in the coal mine gas disaster prevention at present, the most effective means of gas control are gas drainage under suction, gas drainage under suction normally realizes by drilling in the tunnel of mine, because the perforate precision of boring directly affects the hole quality of boring, directly affect the effect of gas control.
In the prior art, translation laneway midline method is all adopted in the mine angular measurement of drilling, and before the angular measurement of drilling by translation laneway midline method, needs to hang at least two vertical lines, need 4 technician's compounding practices to realize the translation of laneway midline, the operating time is long.And, environment in the mine also has a great impact angular measurement, and particularly wind can blow cotton rope and the human factor of suspension, has caused very large measure error, finally cause firedamp taking-out discharging drilling and the design of practice of construction to differ greatly, bring hidden danger for the colliery gas control.
Summary of the invention
For the defective of prior art, the invention provides a kind of colliery with bore angle measuring system and method, to improve the colliery with the accuracy of bore angle measurement, improved the drilling construction quality, improve the gas control effect.
The invention provides a kind of colliery bore angle measuring system, comprising:
For generation of the laser-based directrix emitter of orthogonal the first laser plane and the second laser plane, described the first laser plane overlaps with intersection and the laneway midline of tunnel inwall, and described the second laser plane and drilling rod to be measured intersect;
Be used for the digital angle measuring instrument the angle of described drilling rod measured according to described the second laser plane, described digital angle measuring instrument is arranged on the described drilling rod intersection with described the second laser plane.
Aforesaid colliery bore angle measuring system, described laser-based directrix emitter comprises:
Generating laser for generation of orthogonal described the first laser plane and described the second laser plane;
Be used for carrying out the first horizontal detector of horizontal detection.
Aforesaid colliery bore angle measuring system, described digital angle measuring instrument comprises:
Be used for carrying out the second horizontal detector of horizontal detection;
Be used in described the second horizontal detection measuring the inclination angle measurer at the inclination angle of described drilling rod during to level;
When being used for the second horizontal detection to level, according to the position of described the second laser plane that detects, measure azimuthal azimuth counter of described drilling rod;
Be used for showing described inclination angle and azimuthal display, described display links to each other with described azimuth counter with described inclination angle measurer respectively.
Aforesaid colliery bore angle measuring system, wherein,
Described digital angle measuring instrument also comprises:
Be used for sending the infrared transmitter of infrared control signal;
Described laser-based directrix emitter also comprises:
Be used for receiving the infrared remote receiver of described infrared control signal;
Be used for controlling the controller that described generating laser produces described the first laser plane and described the second laser plane according to described infrared control signal, described controller links to each other with described generating laser with described infrared remote receiver respectively.
Aforesaid colliery bore angle measuring system, described laser-based directrix emitter also comprises:
Be used to described generating laser, described infrared remote receiver and described controller that the first power module of working power is provided, described the first power module links to each other with described generating laser, described infrared remote receiver and described controller respectively.
Aforesaid colliery bore angle measuring system, described digital angle measuring instrument also comprises:
Be used to described inclination angle measurer, described azimuth counter, described display and described infrared transmitter that the second source module of working power is provided, described second source module links to each other with described inclination angle measurer, described azimuth counter, described display and described infrared transmitter respectively.
Aforesaid colliery bore angle measuring system also comprises:
The first support is arranged on the roadway bolt;
The Universal clamp rotating disk is arranged on described the first support;
The second support is arranged on the described Universal clamp rotating disk;
Gimbals are arranged on described the second support, and described laser-based directrix emitter is arranged on the described gimbals.
The invention provides a kind of colliery bore angle measuring method, comprising:
Laser-based directrix emitter produces orthogonal the first laser plane and the second laser plane, and wherein, described the first laser plane overlaps with intersection and the laneway midline of tunnel inwall, and described the second laser plane and drilling rod to be measured intersect;
The digital angle measuring instrument is measured the angle of described drilling rod according to described the second laser plane.
Aforesaid colliery bore angle measuring method, described digital angle measuring instrument is measured the angle of described drilling rod according to described the second laser plane, comprising:
Described digital angle measuring instrument carries out horizontal detection, detects a horizontal plane;
Described digital angle measuring instrument is measured the inclination angle of described drilling rod according to described horizontal plane;
Described digital angle measuring instrument is measured the azimuth of described drilling rod according to described the second laser plane and described horizontal plane.
As shown from the above technical solution, the colliery that the embodiment of the invention provides bore angle measuring system and method, setting by laser-based directrix emitter, can produce orthogonal the first laser plane and the second laser plane, by the first laser plane is overlapped with laneway midline with the intersection of tunnel inwall, so that the second laser plane has accurate benchmark, avoided being subject to when hanging cotton rope as measuring basis the larger defective of measure error artificial or that ambient influnence causes.The digital angle measuring instrument is arranged on the intersection of this second laser plane and drilling rod, can measure the angle of drilling rod by this second laser plane, further improved the accuracy of measuring, and the operation process that carries out the bore angle measurement with the bore angle measuring system by the colliery that present embodiment provides is simple, is easy to realize.The colliery that present embodiment provides bore angle measuring system can the given high-precision mash gas pumping drilling angle parameter in efficient quick ground, guarantees the hole quality of holing effectively to have improved the gas control effect.
Description of drawings
The colliery that Fig. 1 provides for embodiment of the invention bore angle measuring system structural representation;
The laser-based directrix emitter mounting structure schematic diagram that Fig. 2 provides for the embodiment of the invention;
The laser-based directrix emitter structural representation that Fig. 3 provides for the embodiment of the invention;
The digital angle measuring instrument structural representation that Fig. 4 provides for the embodiment of the invention;
The colliery that Fig. 5 provides for embodiment of the invention bore angle measuring method flow chart.
The specific embodiment
The colliery that Fig. 1 provides for embodiment of the invention bore angle measuring system structural representation.As shown in Figure 1, the colliery that provides of present embodiment specifically can be applied to the measuring process of coal mine down-hole drilling angle with bore angle measuring system 100.The colliery that present embodiment provides specifically comprises for generation of the laser-based directrix emitter 81 of orthogonal the first laser plane and the second laser plane with for the digital angle measuring instrument 82 of the angle of drilling rod being measured according to the second laser plane with bore angle measuring system 100.The first laser plane overlaps with intersection and the laneway midline of tunnel inwall, and the second laser plane and drilling rod to be measured intersect; Digital angle measuring instrument 82 is arranged on the drilling rod intersection with the second laser plane.
Particularly, can determine the angle of holing by the angle of measuring drilling rod.Laser-based directrix emitter 81 can produce orthogonal the first laser plane and the second laser plane, in actual application, can laser-based directrix emitter 81 be arranged in the tunnel by special stand, adjust the setting angle of laser-based directrix emitter 81, so that the first laser plane overlaps with laneway midline with the intersection of tunnel inwall, the second laser plane and drilling rod to be measured intersect, and the second laser plane is as the benchmark of drilling rod angular measurement.The second laser plane and drilling rod intersection are provided with digital angle measuring instrument 82, and digital angle measuring instrument 82 can sensing the second laser plane, and according to the angle of the position measurement drilling rod of the second laser plane.
The colliery that present embodiment provides bore angle measuring system 100, setting by laser-based directrix emitter 81, can produce orthogonal the first laser plane and the second laser plane, by the first laser plane is overlapped with laneway midline with the intersection of tunnel inwall, so that the second laser plane has accurate benchmark, avoided being subject to when hanging cotton rope as measuring basis the larger defective of measure error artificial or that ambient influnence causes.Digital angle measuring instrument 82 is arranged on the intersection of this second laser plane and drilling rod, can measure the angle of drilling rod by this second laser plane, further improved the accuracy of measuring, and to carry out the operation process measured with bore angle in the colliery with the bore angle measuring system simple in the colliery that provides by present embodiment, is easy to realize.The colliery that present embodiment provides bore angle measuring system can the given high-precision mash gas pumping drilling angle parameter in efficient quick ground, guarantees the hole quality of holing effectively to have improved the gas control effect.
The laser-based directrix emitter mounting structure schematic diagram that Fig. 2 provides for the embodiment of the invention.As shown in Figure 2, in the present embodiment, this colliery specifically can also comprise the first support 11, Universal clamp rotating disk 12, the second support 13 and gimbals 14 with the bore angle measuring system.The first support 11 is arranged on the roadway bolt; Universal clamp rotating disk 12 is arranged on the first support 11; The second support 13 is arranged on the Universal clamp rotating disk 12; Gimbals 14 are arranged on the second support 13, and laser-based directrix emitter 81 is arranged on the gimbals 14.
Particularly, in actual job, the first support 11 can be arranged near on the roofbolt of laneway midline, Universal clamp rotating disk 12 is arranged on the first support 11, gimbals 14 are arranged on the Universal clamp rotating disk 12 by the second support 13, and laser-based directrix emitter 81 is arranged on the gimbals 14.Laser-based directrix emitter 81 can be adjusted to suitable height by adjusting this Universal clamp rotating disk 12, by adjusting gimbals 14, laser-based directrix emitter 81 can be adjusted to suitable emission angle so that the first laser plane of emission aim at laneway midline.The first support 11 and the second support 13 are specifically as follows and are about 4 minutes steel pipes of 0.5 meter.Setting by the first support 11, Universal clamp rotating disk 12, the second support 13 and gimbals 14, can easily laser-based directrix emitter 81 be arranged in the tunnel, and can according to height and emission angle that needs are installed are freely adjusted laser-based directrix emitter 81, greatly simplify operating process.
The laser-based directrix emitter structural representation that Fig. 3 provides for the embodiment of the invention.As shown in Figure 3, in the present embodiment, this laser-based directrix emitter 81 specifically can comprise for generation of the generating laser 21 of orthogonal the first laser plane and the second laser plane with for the first horizontal detector 22 that carries out horizontal detection.
Particularly, the first horizontal detector 22 can be realized by horizontal bead, the first horizontal detector 22 concrete horizontal detection that are used for can be adjusted the emission angle of laser-based directrix emitter 81 by the horizontal detection result, so that the second laser plane of emission is perpendicular to horizontal plane.Can improve the accuracy of measuring basis by horizontal detection.
In the present embodiment, if this laser-based directrix emitter 81 has function of infrared remote control, then this laser-based directrix emitter 81 can also comprise for the infrared remote receiver 23 that receives infrared control signal and be used for controlling the controller 24 that generating laser 21 produces the first laser planes and the second laser plane according to infrared control signal, and controller 24 links to each other with generating laser 21 with infrared remote receiver 23 respectively.
Particularly, infrared control signal can be sent by digital angle measuring instrument 82, also can be sent by other remote controls.This infrared control signal is specifically in order to indicate the work of laser-based directrix emitter 81 beginning Laser emission, the controller 24 of laser-based directrix emitter 81 triggers generating laser 21 work after receiving this infrared control signal, and generating laser 21 produces the first laser plane and the second laser plane.Controller 24 can also receive and be used to indicate the infrared control signal that stops Laser emission work.
In the present embodiment, this laser-based directrix emitter 81 can also comprise and is used to generating laser 21, infrared remote receiver 23 and controller 24 to provide the first power module 25, the first power modules 25 of working power to link to each other with generating laser 21, infrared remote receiver 23 and controller 24 respectively.The first power module 25 specifically can comprise battery pack and overcurrent protector, can realize overcurrent protection to generating laser 21, infrared remote receiver 23 and controller 24 by arranging of overcurrent protector, improves the reliability of circuit.
The digital angle measuring instrument structural representation that Fig. 4 provides for the embodiment of the invention.As shown in Figure 4, in the present embodiment, this digital angle measuring instrument 82 specifically can comprise be used to the second horizontal detector 31 that carries out horizontal detection, be used in the second horizontal detection during to level, measure the inclination angle measurer 32 at the inclination angle of drilling rod, when being used for the second horizontal detection to level, position according to the second laser plane that detects, measure azimuthal azimuth counter 33 of drilling rod and be used for showing inclination angle and azimuthal display 34 that display 34 links to each other with azimuth counter 33 with inclination angle measurer 32 respectively.
Particularly, the second horizontal detector 31 can be realized by horizontal bead, can detect whether level of digital angle measuring instrument 82, when digital angle measuring instrument 82 level, inclination angle measurer 32 can be measured according to this horizontal level the inclination angle of drilling rod, the inclination angle of drilling rod is specifically in order to indicate the angle of drilling rod and horizontal plane, azimuth counter 33 can be according to the azimuth of the position measurement drilling rod of this horizontal level and the second laser plane that detects, and this azimuth is specially the second laser plane at the projection of horizontal plane and the drilling rod angle in the projection of horizontal plane.Display 34 is shown to the user in real time with inclination angle and the azimuth of the drilling rod that measures, so that the user adjusts the angle of drilling rod according to the numerical value that measures, conform to so that drilling rod is adjusted to design angle, after the drilling rod adjustment is complete, conform to design boring by the actual boring of getting of this drilling rod.
In actual implementation procedure, can be provided with the high-precision gravity sensor in the inclination angle measurer 32, can realize measurement to the inclination angle by this high-precision gravity sensor.Be provided with in the azimuth counter 33 and measure swing arm and high-precision angle sensor, in azimuthal measuring process, can at first the marker line of measuring on the swing arm be aimed at the intersection of drilling rod with the second laser plane, high-precision angle sensor is measured calculating to the azimuth again.
In the present embodiment, digital angle measuring instrument 82 can also be as the remote control of laser-based directrix emitter 81, and then digital angle measuring instrument 82 can also comprise for the infrared transmitter 35 that sends infrared control signal.
In the present embodiment, this digital angle measuring instrument 82 can also comprise the second source module 36 that is used to inclination angle measurer 32, azimuth counter 33, display 34 and infrared transmitter 35 that working power is provided, and second source module 36 links to each other with inclination angle measurer 32, azimuth counter 33, display 34 and infrared transmitter 35 respectively.Second source module 36 specifically can comprise battery pack and overcurrent protector, can realize overcurrent protection to inclination angle measurer 32, azimuth counter 33, display 34 and infrared transmitter 35 by arranging of overcurrent protector, improves the reliability of circuit.
The colliery that Fig. 5 provides for embodiment of the invention bore angle measuring method flow chart.As shown in Figure 5, the colliery that provides of present embodiment specifically comprises with the bore angle measuring method:
Step 10, laser-based directrix emitter produce orthogonal the first laser plane and the second laser plane, and wherein, the first laser plane overlaps with intersection and the laneway midline of tunnel inwall, and the second laser plane and drilling rod to be measured intersect;
Step 20, digital angle measuring instrument are measured the angle of drilling rod according to the second laser plane.
The colliery that present embodiment provides bore angle measuring method, laser-based directrix emitter produces orthogonal the first laser plane and the second laser plane, wherein, the first laser plane overlaps with intersection and the laneway midline of tunnel inwall, the second laser plane and drilling rod to be measured intersect, and the digital angle measuring instrument is measured the angle of drilling rod according to the second laser plane.Laser-based directrix emitter can produce orthogonal the first laser plane and the second laser plane, by the first laser plane is overlapped with laneway midline with the intersection of tunnel inwall, so that the second laser plane has accurate benchmark, avoided being subject to when hanging cotton rope as measuring basis the larger defective of measure error artificial or that ambient influnence causes.The digital angle measuring instrument is arranged on the intersection of this second laser plane and drilling rod, can measure the angle of drilling rod by this second laser plane, further improved the accuracy of measuring, and to carry out the operation process measured with bore angle in the colliery with the bore angle measuring system simple in the colliery that provides by present embodiment, is easy to realize.The colliery that present embodiment provides bore angle measuring system can the given high-precision mash gas pumping drilling angle parameter in efficient quick ground, guarantees the hole quality of holing effectively to have improved the gas control effect.
In the present embodiment, step 20, the digital angle measuring instrument is measured the angle of drilling rod according to the second laser plane, specifically can comprise the steps:
The digital angle measuring instrument carries out horizontal detection, detects a horizontal plane;
The digital angle measuring instrument is measured the inclination angle of drilling rod according to horizontal plane;
The digital angle measuring instrument is measured the azimuth of drilling rod according to the second laser plane and horizontal plane.
In colliery bore angle measuring system and the method that the embodiment of the invention provides, the cotton rope that adopts high accuracy, jamproof laser to provide the measuring basis line to use to substitute traditional measurement, solve the problem that artificial backguy rope is unstable and the distinguished and admirable disturbance of underworkings causes center line to be shaken, improved certainty of measurement.Laser-based directrix emitter is fixed on the back with special stand, and the laser-based directrix is provided, and has solved all necessary repeated translation center line methods of operating of bore direction angle of traditional every measurement, has improved certainty of measurement, has shortened Measuring Time; Use that high-precision digital angle measuring instrument has solved that hand-held clip angle gauge and tilt gauge are measured unstable, angle rule and tilt gauge scale resolution ratio is not high, the center line of drilling rod and translation is on same horizontal plane and problem that can't Measurement accuracy boring angle, certainty of measurement can reach ± 0.2 rank of spending, provide guarantee for strengthening colliery control coal and Gas Outburst drilling construction quality and taking out in advance the coal-bed gas effect, guaranteed the mine safety High-efficient Production.
It should be noted that at last: above each embodiment is not intended to limit only in order to technical scheme of the present invention to be described; Although with reference to aforementioned each embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps some or all of technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of various embodiments of the present invention technical scheme.
Claims (9)
1. a colliery bore angle measuring system is characterized in that, comprising:
For generation of the laser-based directrix emitter of orthogonal the first laser plane and the second laser plane, described the first laser plane overlaps with intersection and the laneway midline of tunnel inwall, and described the second laser plane and drilling rod to be measured intersect;
Be used for the digital angle measuring instrument the angle of described drilling rod measured according to described the second laser plane, described digital angle measuring instrument is arranged on the described drilling rod intersection with described the second laser plane.
2. colliery according to claim 1 bore angle measuring system is characterized in that, described laser-based directrix emitter comprises:
Generating laser for generation of orthogonal described the first laser plane and described the second laser plane;
Be used for carrying out the first horizontal detector of horizontal detection.
3. colliery according to claim 1 bore angle measuring system is characterized in that, described digital angle measuring instrument comprises:
Be used for carrying out the second horizontal detector of horizontal detection;
Be used in described the second horizontal detection measuring the inclination angle measurer at the inclination angle of described drilling rod during to level;
When being used for the second horizontal detection to level, according to the position of described the second laser plane that detects, measure azimuthal azimuth counter of described drilling rod;
Be used for showing described inclination angle and azimuthal display, described display links to each other with described azimuth counter with described inclination angle measurer respectively.
4. colliery according to claim 3 bore angle measuring system is characterized in that:
Described digital angle measuring instrument also comprises:
Be used for sending the infrared transmitter of infrared control signal;
Described laser-based directrix emitter also comprises:
Be used for receiving the infrared remote receiver of described infrared control signal;
Be used for controlling the controller that described generating laser produces described the first laser plane and described the second laser plane according to described infrared control signal, described controller links to each other with described generating laser with described infrared remote receiver respectively.
5. colliery according to claim 4 bore angle measuring system is characterized in that, described laser-based directrix emitter also comprises:
Be used to described generating laser, described infrared remote receiver and described controller that the first power module of working power is provided, described the first power module links to each other with described generating laser, described infrared remote receiver and described controller respectively.
6. colliery according to claim 4 bore angle measuring system is characterized in that, described digital angle measuring instrument also comprises:
Be used to described inclination angle measurer, described azimuth counter, described display and described infrared transmitter that the second source module of working power is provided, described second source module links to each other with described inclination angle measurer, described azimuth counter, described display and described infrared transmitter respectively.
7. colliery according to claim 1 bore angle measuring system is characterized in that, also comprises:
The first support is arranged on the roadway bolt;
The Universal clamp rotating disk is arranged on described the first support;
The second support is arranged on the described Universal clamp rotating disk;
Gimbals are arranged on described the second support, and described laser-based directrix emitter is arranged on the described gimbals.
8. a colliery bore angle measuring method is characterized in that, comprising:
Laser-based directrix emitter produces orthogonal the first laser plane and the second laser plane, and wherein, described the first laser plane overlaps with intersection and the laneway midline of tunnel inwall, and described the second laser plane and drilling rod to be measured intersect;
The digital angle measuring instrument is measured the angle of described drilling rod according to described the second laser plane.
9. colliery according to claim 8 bore angle measuring method is characterized in that, described digital angle measuring instrument is measured the angle of described drilling rod according to described the second laser plane, comprising:
Described digital angle measuring instrument carries out horizontal detection, detects a horizontal plane;
Described digital angle measuring instrument is measured the inclination angle of described drilling rod according to described horizontal plane;
Described digital angle measuring instrument is measured the azimuth of described drilling rod according to described the second laser plane and described horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210361620.9A CN102889075B (en) | 2012-09-25 | 2012-09-25 | Coal mine drilling angle measuring system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210361620.9A CN102889075B (en) | 2012-09-25 | 2012-09-25 | Coal mine drilling angle measuring system and method |
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| CN102889075A true CN102889075A (en) | 2013-01-23 |
| CN102889075B CN102889075B (en) | 2015-05-20 |
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| CN201210361620.9A Active CN102889075B (en) | 2012-09-25 | 2012-09-25 | Coal mine drilling angle measuring system and method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103556981A (en) * | 2013-09-27 | 2014-02-05 | 中国矿业大学 | Drilling construction automatically-monitoring system |
| CN104060982A (en) * | 2014-07-09 | 2014-09-24 | 中煤科工集团重庆研究院有限公司 | Distance measurement type method for measuring opening azimuth angle of underground drilling hole |
| CN109441431A (en) * | 2018-10-31 | 2019-03-08 | 河南大有能源股份有限公司新安煤矿 | A kind of coal mining drilling drift angle dipmeter |
| CN109707372A (en) * | 2019-01-29 | 2019-05-03 | 杭州祥龙钻探设备科技股份有限公司 | A kind of perforation of boring machine orientation survey device based on six axis MEMS sensors |
| CN113202456A (en) * | 2021-04-21 | 2021-08-03 | 中煤科工集团西安研究院有限公司 | Device and method for measuring angle of underground hole of coal mine based on image processing |
| CN114233325A (en) * | 2021-12-31 | 2022-03-25 | 广西路建工程集团有限公司 | Tunnel supporting system suitable for weak broken country rock |
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| CN202810830U (en) * | 2012-09-25 | 2013-03-20 | 淮南矿业(集团)有限责任公司 | Drilling angle measuring system used in coal mine |
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| DE3902127A1 (en) * | 1989-01-25 | 1990-07-26 | E & Pk Ingbuero | Wagon drill with laser-orientated control |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103556981A (en) * | 2013-09-27 | 2014-02-05 | 中国矿业大学 | Drilling construction automatically-monitoring system |
| CN103556981B (en) * | 2013-09-27 | 2016-04-06 | 中国矿业大学 | A kind of drilling construction automatic monitoring system |
| CN104060982A (en) * | 2014-07-09 | 2014-09-24 | 中煤科工集团重庆研究院有限公司 | Distance measurement type method for measuring opening azimuth angle of underground drilling hole |
| CN104060982B (en) * | 2014-07-09 | 2016-10-05 | 中煤科工集团重庆研究院有限公司 | Distance measurement type method for measuring opening azimuth angle of underground drilling hole |
| CN109441431A (en) * | 2018-10-31 | 2019-03-08 | 河南大有能源股份有限公司新安煤矿 | A kind of coal mining drilling drift angle dipmeter |
| CN109707372A (en) * | 2019-01-29 | 2019-05-03 | 杭州祥龙钻探设备科技股份有限公司 | A kind of perforation of boring machine orientation survey device based on six axis MEMS sensors |
| CN113202456A (en) * | 2021-04-21 | 2021-08-03 | 中煤科工集团西安研究院有限公司 | Device and method for measuring angle of underground hole of coal mine based on image processing |
| CN113202456B (en) * | 2021-04-21 | 2023-10-31 | 中煤科工集团西安研究院有限公司 | Underground coal mine tapping angle measuring device and method based on image processing |
| CN114233325A (en) * | 2021-12-31 | 2022-03-25 | 广西路建工程集团有限公司 | Tunnel supporting system suitable for weak broken country rock |
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| Publication number | Publication date |
|---|---|
| CN102889075B (en) | 2015-05-20 |
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