CN106593424B - Back rock Protodyakonov coefficient based on sound level meter is with brill detection method - Google Patents
Back rock Protodyakonov coefficient based on sound level meter is with brill detection method Download PDFInfo
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- CN106593424B CN106593424B CN201611101992.2A CN201611101992A CN106593424B CN 106593424 B CN106593424 B CN 106593424B CN 201611101992 A CN201611101992 A CN 201611101992A CN 106593424 B CN106593424 B CN 106593424B
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- 239000011435 rock Substances 0.000 title claims abstract description 60
- 238000001514 detection method Methods 0.000 title claims abstract description 16
- 241001074085 Scophthalmus aquosus Species 0.000 title claims description 8
- 238000005553 drilling Methods 0.000 claims abstract description 92
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000000523 sample Substances 0.000 claims abstract description 22
- 239000003245 coal Substances 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 238000002474 experimental method Methods 0.000 claims abstract description 5
- 239000000178 monomer Substances 0.000 claims description 19
- 238000012545 processing Methods 0.000 claims description 4
- 235000005976 Citrus sinensis Nutrition 0.000 claims description 3
- 240000002319 Citrus sinensis Species 0.000 claims description 3
- IRERQBUNZFJFGC-UHFFFAOYSA-L azure blue Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[S-]S[S-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] IRERQBUNZFJFGC-UHFFFAOYSA-L 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 235000015170 shellfish Nutrition 0.000 claims 1
- 239000004575 stone Substances 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000000266 injurious effect Effects 0.000 abstract description 2
- 238000004873 anchoring Methods 0.000 abstract 1
- 238000000151 deposition Methods 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001965 increasing effect Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000010454 slate Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/003—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by analysing drilling variables or conditions
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- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
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- Chemical & Material Sciences (AREA)
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- Acoustics & Sound (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of back rock Protodyakonov coefficient based on sound level meter with boring detection method, for the important rock mechanics index for influencing coal mine tunnel top board anchoring support scheme --- Protodyakonov coefficient surveys problem with probing, in the drilling of back construction 32~42mm of Φ, the installing of drill bit rear is loaded with the bearing-type of sound level meter probe with boring device, the method combined is read using with scale-type drilling rod, during drilling, test the drilling volume decibel value of different depth, the java standard library for the rock Protodyakonov coefficient 0.3~20 that Binding experiment room is established, by comparing tunnel original position rock drilling volume decibel value, quickly obtain the rock Protodyakonov coefficient in back drilling range, it converts the injurious noise for the process of punchinging to beneficial to sound source, it realizes with probing survey technology.The Exemplary depositions rock stratum such as sandstone, shale and mud stone suitable for coal measure strata Protodyakonov coefficient is surveyed with probing.It has scene easy to use, easy to operate, and labor intensity is low, the advantages of not affecting the normal production.
Description
Technical field
The present invention relates to one kind to survey device and method with probing, belongs to the technical field of mine timbering, especially suitable
In the back rock based on sound level meter of the lesser geological conditions of coal mine tunnel top board different lithology rock stratum interlayering interplanar distance
Stone Protodyakonov coefficient surveys device and method with probing.
Background technique
Roadway support be safe coal exploitation a key technology, and roof accident in mine disaster occupying quite
The reason of big ratio, roof accident, is not mainly since the lithologic character of local top plate verifies caused supporting intensity in time
Not enough.So when roadway construction, it is necessary to back lithologic character is verified in time, to there are the region of roof fall hidden danger is timely
Support pattern or adjustment supporting parameter are changed, guarantees the safety and stabilization of top plate.
The method of detection tunnel part Roof rock feature feature mainly has core sampler method, the wall of a borehole impression method, drilling at present
Wall observation and geologic radar detection etc..Even if core sampler method carries out coring to top plate with geology rock core drill, according to rock core
Prismatical structure, analyze the lithologic character of top plate, but the figure of geological drilling rig is larger, be not suitable for driving face use, no
It can be used whenever and wherever possible with the driving of development machine；The wall of a borehole impression method is the plasticity material using some no mobility and elasticity
Material, is fitted on boring surface, the in-profile of tested drilling is copied into mould, then measures stamp, bores so that evaluation is tested
The internal structure in hole, but its lithologic character that can not determine top plate can not provide the design of support pattern scientific and effective
Data；The wall of a borehole observation is with equipment such as rock stratum detection recorders, under directly being shot bore inner scene by probe
Come, but influenced by underground coal mine environment, this method since the precision pried through is low, the roof rock structural parameters error of acquisition compared with
Greatly；Geologic radar detection is that the electrical property difference based on visited medium accurately differentiates different medium interface in roof strata
And the electromagnetic technique positioned, this method is inadequate to the announcement degree of joint, cranny development, can not effectively identify that tunnel is pushed up
The lithologic character of slate layer, and this is exactly the key points and difficulties in roadway support design construction.Therefore, for coal mine roof plate rock stratum
Characteristics of combination, need to develop a kind of side that can adapt to underground coal mine environment and can be carried out quickly identification Roof rock feature feature
Method.
Summary of the invention
Technical problem: it in view of the above technical problems, provides that a kind of structure is simple, is obtained using the noise generated in boring procedure
The rock Protodyakonov coefficient of back is taken, easy to use, easy to operate, the low back rock based on sound level meter of detected intensity
Stone Protodyakonov coefficient surveys device and method with probing.
Technical solution: to realize the above-mentioned technical purpose, the present invention is based on the back rock Protodyakonov coefficient of sound level meter with
Detection device is bored, including bearing-type, with boring device, monomer jumbolter, sound level meter and drilling rod, wherein monomer jumbolter is vertical
In roadway floor, the top of monomer jumbolter is equipped with the bearing-type for piercing back by scale-type drilling rod with brill dress for setting
It sets, bearing-type is connected by connecting line with sound level meter with boring device.
The bearing-type includes sound level meter probe, cone-shaped component, mute bearing and the brill being arranged on drilling rod with boring device
Head, wherein drill bit is arranged on scale-type drilling rod top, and mute bearing is arranged on the drilling rod below drill bit, and mute bearing is equipped with
Multi-disc cone-shaped component, sound level meter probe are arranged on cone-shaped component, and sound level meter probe is connected by connecting line with sound level meter.
The mute bearing bore diameter is 15~25mm, and outer diameter is 25~35mm, and internal diameter and scale-type drilling rod weld, outer diameter
It is welded with cone-shaped component.
The monomer jumbolter is fluid pressure type or pneumatic type；Drilling rod is scale-type drilling rod, scale-type run of steel
For 1m, from top to bottom every the one a height of 1cm of circle of 10cm processing, depth is the groove of 1mm, and scale-type drilling rod surface is equipped with reflective painting
Material will spray the yellowish green nine kinds of coloured panels of ultramarine purple black and white of blood orange from top to bottom along drilling direction, wherein L in groove1Length
For 100cm, L2Length be 10cm.
A kind of back rock Protodyakonov coefficient based on sound level meter is with detection method is bored, and its step are as follows:
A. it establishes the java standard library of the rock Protodyakonov coefficient 0.3~20 in mine: choosing coring place in same heading,
Different layers position rock is drilled through within the scope of top plate coring place 20m, and is added according to " coal and physical-mechanical properties of rock measuring method "
Work is combined into standard sample, in the lab using jumbolter and drill bit for the acquirement each rock of rock core Protodyakonov coefficient 0.3~20
The various combination of stone carries out drilling experiment, and uses the decibel of noise during sound level meter record test drill bit drilling standard sample
Value carries out drilling test to all standard samples, obtains the rock standard sample drilling process of different Protodyakonov coefficients 0.3~20
Noise decibel value range；
B. monomer jumbolter is opened, monomer jumbolter drives bearing-type with boring device on back by drilling rod
Drilling is pierced, sound level meter is started to work, acquisition bearing-type noise decibel value and decibel value in back drilling with boring device
Performance graph；It is read in conjunction with scale-type drilling rod, every drilling 10cm, stops drilling, the artificial decibel value model read in sound level meter
It encloses, and is compared with the java standard library for the rock Protodyakonov coefficient 0.3~20 established based on the mine, obtain the rock within the scope of this
Solid coefficient and drilling distance；When scale-type run of steel deficiency, increase extended scale-type drilling rod in tail end；
C. step b is repeated, to obtain the rock consolidating coefficient within the scope of top plate drilling.
The utility model has the advantages that
The noise that this method generates during jumbolter is punchinged is converted to beneficial sound source, realizes to balkstone
Real-time, the continuous detection of solid coefficient, the installing of drill bit rear are loaded with the bearing-type of sound level meter probe with boring device, using with
The method that scale-type drilling rod reading combines tests the drilling volume decibel value of different depth, Binding experiment during drilling
The java standard library for the rock Protodyakonov coefficient 0.3~20 that room is established quickly obtains lane by comparing tunnel original position rock drilling volume decibel value
Rock Protodyakonov coefficient within the scope of road top plate drilling converts the injurious noise for the process of punchinging to beneficial to sound source, realizes with probing
It surveys and supporting parameter, strengthening supporting or appropriate reduction is adjusted according to the change adaptation to local conditions of local balkstone solid coefficient in time
Supporting efficiency effectively prevent supporting waste and the inadequate of supporting intensity in production to cause roof fall accident, provides peace for coal miner
Complete reliable working environment, has scene easy to use, easy to operate, labor intensity is low, the advantages of not affecting the normal production.
Detailed description of the invention
Fig. 1 is plane arrangement structure schematic diagram of the invention；
Fig. 2 is bearing-type of the invention with boring device schematic diagram；
Fig. 3 is the schematic diagram of scale-type drilling rod of the invention.
In figure: 1- bearing-type is with boring device；2- monomer jumbolter；3- sound level meter；4- scale-type drilling rod；The lane 5-
Road top plate；6- roadway floor；7- sound level meter probe；8- cone-shaped component；The mute bearing of 9-；10- drill bit；11- drilling；12
Connecting line.
Specific embodiment
Embodiment of the invention is further described with reference to the accompanying drawing:
As shown in Figure 1, the back rock Protodyakonov coefficient of the invention based on sound level meter is with brill detection device, including axis
Formula is held with boring device 1, monomer jumbolter 2, sound level meter 3 and drilling rod, wherein monomer jumbolter 2 is vertically set on roadway floor
6, the top of monomer jumbolter 2 is equipped with the bearing-type for piercing back 5 with boring device 1, bearing-type by scale-type drilling rod 4
It is connected by connecting line 12 with sound level meter 3 with boring device 1.
As shown in Fig. 2, the bearing-type with boring device 1 include be arranged on drilling rod sound level meter probe 7, cone-shaped component 8,
Mute bearing 9 and drill bit 10, wherein drill bit 10 is arranged on 4 top of scale-type drilling rod, and mute bearing 9 is arranged in below drill bit 10
On drilling rod, mute bearing 9 is equipped with multi-disc cone-shaped component 8, and sound level meter probe 7 is arranged on cone-shaped component 8, sound level meter probe 7
It is connected by connecting line 12 with sound level meter 3.9 internal diameter of mute bearing is 15~25mm, and outer diameter is 25~35mm, interior
Diameter and scale-type drilling rod 4 weld, and outer diameter and cone-shaped component 8 weld.
As shown in figure 3, the monomer jumbolter 2 is fluid pressure type or pneumatic type；Drilling rod is scale-type drilling rod 4, is carved
4 length of degree formula drilling rod is 1m, and from top to bottom every the one a height of 1cm of circle of 10cm processing, depth is the groove of 1mm, scale-type drilling rod 4
Surface is equipped with reflecting coating, will spray the yellowish green nine kinds of color bars of ultramarine purple black and white of blood orange in groove from top to bottom along drilling direction
Band, wherein L1Length be 100cm, L2Length be 10cm.
A kind of back rock Protodyakonov coefficient based on sound level meter is with detection method is bored, and its step are as follows:
A. it establishes the java standard library of the rock Protodyakonov coefficient 0.3~20 in mine: choosing coring place in same heading,
Different layers position rock is drilled through within the scope of top plate coring place 20m, and is added according to " coal and physical-mechanical properties of rock measuring method "
Work is combined into standard sample, in the lab using jumbolter and drill bit for the acquirement each rock of rock core Protodyakonov coefficient 0.3~20
The various combination of stone carries out drilling experiment, and uses the decibel of noise during sound level meter record test drill bit drilling standard sample
Value carries out drilling test to all standard samples, obtains the rock standard sample drilling process of different Protodyakonov coefficients 0.3~20
Noise decibel value range；
B. monomer jumbolter 2 is opened, monomer jumbolter 2 drives bearing-type to push up with boring device 1 in tunnel by drilling rod
Drilling 11 is pierced on plate 5, sound level meter 3 is started to work, acquisition bearing-type noise decibel in the drilling of back 5 with boring device 1
The performance graph of value and decibel value；It is read in conjunction with scale-type drilling rod 4, every drilling 10cm, stops drilling, it is artificial to read sound level meter 3
In decibel value range, and compare, be somebody's turn to do with the java standard library for the rock Protodyakonov coefficient 0.3~20 established based on the mine
Rock consolidating coefficient and drilling distance in range, the every drilling 0.1m of drilling rod, according to the size of measured decibel value, with rock
The java standard library of stone Protodyakonov coefficient 0.3~20 compares, and can determine the rock consolidating coefficient in drilling in 0.1m distance；Root
Rock within the scope of different, the time update supporting parameter according to the solid coefficient of balkstone, such as local top plate is relatively soft to be
Mud stone, it is necessary to which strengthening supporting increases suspension roof support density, to guarantee stability of cavern roof；Rock within the scope of local top plate compared with
Firmly be sandstone, can array pitch between increasings suspension roof support appropriate, meet supporting requirement, while reducing the waste of material, reality
The adaptation to local conditions of roadway support is showed；
When scale-type 4 curtailment of drilling rod, increase extended scale-type drilling rod 4 in tail end；
C. step b is repeated, to obtain the rock consolidating coefficient in 11 range of top plate drilling.
Claims (4)
1. a kind of back rock Protodyakonov coefficient based on sound level meter is with boring detection method, the device used include bearing-type with
Boring device (1), monomer jumbolter (2), sound level meter (3) and scale-type drilling rod (4), wherein monomer jumbolter (2) is vertically set
It sets in roadway floor (6), the top of monomer jumbolter (2) is equipped with the axis for piercing back (5) by scale-type drilling rod (4)
Formula is held with boring device (1), bearing-type is connected by connecting line (12) with sound level meter (3) with boring device (1)；
Its step are as follows:
A. it establishes the java standard library of the rock Protodyakonov coefficient 0.3 ~ 20 in mine: coring place is chosen in same heading, in top plate
Different layers position rock is drilled through within the scope of the 20m of coring place, and according to " coal and physical-mechanical properties of rock measuring method " processing group
Synthetic standards sample is directed to using jumbolter and drill bit obtains each rock of rock core Protodyakonov coefficient 0.3 ~ 20 not in the lab
Drilling experiment is carried out with combination, and using the decibel value of noise during sound level meter record test drill bit drilling standard sample, it is right
All standard samples carry out drilling test, obtain the noise point of the rock standard sample drilling process of different Protodyakonov coefficients 0.3 ~ 20
Shellfish value range；
B. monomer jumbolter (2) are opened, monomer jumbolter (2) drives bearing-type with boring device by scale-type drilling rod (4)
(1) it is pierced on back (5) drilling (11), sound level meter (3) is started to work, and obtains bearing-type with boring device (1) in tunnel
The performance graph of noise decibel value and decibel value in top plate (5) drilling；It is read in conjunction with scale-type drilling rod (4), every drilling 10cm stops
Only creep into, manually read the decibel value range in sound level meter (3), and with the rock Protodyakonov coefficient 0.3 ~ 20 established based on the mine
Java standard library compare, obtain rock consolidating coefficient within the scope of this and drilling distance；When scale-type drilling rod (4) length not
When sufficient, increase extended scale-type drilling rod (4) in tail end；
C. step b is repeated, to obtain the rock consolidating coefficient in top plate drilling (11) range.
2. the back rock Protodyakonov coefficient according to claim 1 based on sound level meter is with brill detection method, feature
Be: the bearing-type includes sound level meter probe (7), cone-shaped component being arranged on scale-type drilling rod (4) with boring device (1)
(8), mute bearing (9) and drill bit (10), wherein drill bit (10) setting is in scale-type drilling rod (4) top, mute bearing (9) setting
On scale-type drilling rod (4) below drill bit (10), mute bearing (9) is equipped with multi-disc cone-shaped component (8), sound level meter probe
(7) it is arranged on cone-shaped component (8), sound level meter probe (7) is connected by connecting line (12) with sound level meter (3).
3. the back rock Protodyakonov coefficient according to claim 2 based on sound level meter is with brill detection method, feature
Be: mute bearing (9) internal diameter is 15 ~ 25mm, and outer diameter is 25 ~ 35mm, and internal diameter and scale-type drilling rod (4) are welded, outside
Diameter and cone-shaped component (8) are welded.
4. the back rock Protodyakonov coefficient according to claim 1 or 2 based on sound level meter is with brill detection method, special
Sign is: the monomer jumbolter (2) is fluid pressure type or pneumatic type；Scale-type drilling rod (4) length is 1m, from top to bottom
Every the one a height of 1cm of circle of 10cm processing, depth is the groove of 1mm, and scale-type drilling rod (4) surface is equipped with reflecting coating, along drilling side
To the yellowish green nine kinds of coloured panels of ultramarine purple black and white of blood orange, the wherein overall length of scale-type drilling rod (4) will be sprayed in groove from top to bottom
The length of L1 is 100cm, and the length of the coloured panel gap length L2 of scale-type drilling rod (4) is 10cm.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611101992.2A CN106593424B (en) | 2016-12-05 | 2016-12-05 | Back rock Protodyakonov coefficient based on sound level meter is with brill detection method |
| RU2018110400A RU2688714C1 (en) | 2016-12-05 | 2017-07-04 | Device and method of determining, during drilling, coefficient of fortress according to protodyakov of the tunnel roof rock based on the sound level meter |
| CA2997155A CA2997155C (en) | 2016-12-05 | 2017-07-04 | Sound level meter-based tunnel roof rock protodyakonov coefficient detecting-while-drilling apparatus and method |
| PCT/CN2017/091610 WO2018103325A1 (en) | 2016-12-05 | 2017-07-04 | Sound level meter-based measurement while drilling device and method for obtaining protodikonov's hardness coefficient of rock of tunnel roof |
| AU2017317602A AU2017317602B2 (en) | 2016-12-05 | 2017-07-04 | Sound level meter-based tunnel roof rock Protodyakovnov coefficient detecting-while-drilling apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611101992.2A CN106593424B (en) | 2016-12-05 | 2016-12-05 | Back rock Protodyakonov coefficient based on sound level meter is with brill detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106593424A CN106593424A (en) | 2017-04-26 |
| CN106593424B true CN106593424B (en) | 2019-09-10 |
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| CN201611101992.2A Active CN106593424B (en) | 2016-12-05 | 2016-12-05 | Back rock Protodyakonov coefficient based on sound level meter is with brill detection method |
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| Country | Link |
|---|---|
| CN (1) | CN106593424B (en) |
| AU (1) | AU2017317602B2 (en) |
| CA (1) | CA2997155C (en) |
| RU (1) | RU2688714C1 (en) |
| WO (1) | WO2018103325A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106593424B (en) * | 2016-12-05 | 2019-09-10 | 中国矿业大学 | Back rock Protodyakonov coefficient based on sound level meter is with brill detection method |
| CN107387060A (en) * | 2017-09-11 | 2017-11-24 | 中国矿业大学 | Method for guiding fully-mechanized coal mining machine to mine coal from top |
| CN110219642B (en) * | 2019-04-26 | 2022-10-14 | 中国石油化工股份有限公司 | Sound wave time difference correction method based on sound wave propagation path |
| CN110486007B (en) * | 2019-08-29 | 2023-02-03 | 武汉长盛煤安科技有限公司 | In-situ testing device and method for mechanical parameters of coal mine surrounding rock while drilling |
| CN112360527A (en) * | 2020-11-11 | 2021-02-12 | 中国矿业大学 | Anchoring agent compaction device, anchor rod and using method |
| CN113216864A (en) * | 2021-05-06 | 2021-08-06 | 六盘水师范学院 | Drilling device for tunnel roof rock property components |
| CN113503153A (en) * | 2021-09-13 | 2021-10-15 | 四川交达预应力工程检测科技有限公司 | Self-adaptive drilling hole-forming method and system |
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| CA2075130A1 (en) * | 1991-07-31 | 1993-02-01 | Geoffrey P. D. Lock | Data transmission |
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| US6490527B1 (en) * | 1999-07-13 | 2002-12-03 | The United States Of America As Represented By The Department Of Health And Human Services | Method for characterization of rock strata in drilling operations |
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| US9534492B2 (en) * | 2014-11-11 | 2017-01-03 | Baker Hughes Incorporated | Pressure compensated capacitive micromachined ultrasound transducer for downhole applications |
| CN204703766U (en) * | 2015-06-11 | 2015-10-14 | 武汉钢铁(集团)公司 | There is the mining cone bit of cooling structure |
| CN105113987B (en) * | 2015-07-08 | 2017-11-28 | 中煤科工集团西安研究院有限公司 | Interbedding of soft and hard rocks coal seam concordant measurement while drilling directional drilling equipment and its construction method |
| CN105937402B (en) * | 2016-04-28 | 2018-11-06 | 湖南科技大学 | A kind of Bolt System with the recognizable loosening country rock drill bit of self-drilling type |
| CN106593424B (en) * | 2016-12-05 | 2019-09-10 | 中国矿业大学 | Back rock Protodyakonov coefficient based on sound level meter is with brill detection method |
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2016
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| RU2688714C1 (en) | 2019-05-22 |
| AU2017317602B2 (en) | 2019-08-08 |
| CN106593424A (en) | 2017-04-26 |
| CA2997155A1 (en) | 2018-06-05 |
| CA2997155C (en) | 2019-06-18 |
| WO2018103325A1 (en) | 2018-06-14 |
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