CN103711484B - borehole imaging device - Google Patents
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- CN103711484B CN103711484B CN201410016625.7A CN201410016625A CN103711484B CN 103711484 B CN103711484 B CN 103711484B CN 201410016625 A CN201410016625 A CN 201410016625A CN 103711484 B CN103711484 B CN 103711484B
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Abstract
The present invention relates to a kind of imaging device.The technical problem to be solved is to provide a kind of borehole imaging device, this device can utilize the borehole imaging instrument probe of three dimensional internal compass that boring is formed panoramic shooting, obtain continuous whole borehole wall crack plane outspread drawing and D prism map, improve the accuracy of the borehole fissure space occurrence recorded.The technical solution adopted for the present invention to solve the technical problems is: borehole imaging device, including borehole imaging instrument main frame, borehole imaging instrument probe, depth counter, probe push rod, centering device and data processor, three-dimensional compass it is provided with in borehole imaging instrument probe, described borehole imaging instrument main frame is connected with depth counter and data processor, the top of borehole imaging instrument probe is provided with centering device, the bottom of borehole imaging instrument probe is provided with probe push rod, and borehole imaging instrument probe is connected with depth counter.The present invention can realize panoramic shooting, it is adaptable to crevice space occurrence in detection boring.
Description
Technical field
The present invention relates to a kind of imaging device, especially relate to the borehole imaging dress of crevice space occurrence in a kind of detectable boring
Put.
Background technology
Along with China's economy and science and technology develop rapidly, to the energy particularly coal, oil and natural gas demand the most day by day
Increase.Over nearly 10 years, the production and consumption amount of Chinese coal, in increasing continuously and healthily trend, is the first in the world coal production and disappears
Take big country.But, China Mine Geological condition is extremely complex, and colliery crustal stress is high, and variable gradient is big, and gas bearing capacity is high and saturating
Gas is poor, and coal and gas prominent is serious, and exploitation difficulty is big, and severe and great casualty particularly gas burst accident is the most effectively held back
System, Safety of Coal Mine Production outstanding problem.
Gas Outburst is closely related with gas flowing in coal seam hole or crack, and the space occurrence in coal and rock crack is to research
Gas flowing law in coal seam is most important.Meanwhile, the exploitation of oil and natural gas (shale gas etc.) with they in rock stratum
Infiltration in hole or crack is closely related, and in rock mass, the space occurrence in crack is to research oil and natural gas (shale gas etc.)
Percolation Law in rock stratum is most important.Therefore, it can study gas, oil etc. by acquisition crevice space occurrence exist
Flowing (infiltration) rule in coal body or rock mass, and then improve coal, the productivity ratio of petroleum and natural gas, and ensure to produce peace
Entirely.
Crack field in coal and rock is the main thoroughfare of gas migration or seepage flow, its geometry and physical characteristic be desorption of mash gas, enrichment,
The prerequisite of migration, the evolution developmental state of crack field will directly affect the permeability of coal and rock and gas at disrumpent feelings coal petrography
Seepage flow situation in body.But current substantial amounts of research work is concentrated mainly on permeability property and the gas migration basic law of coal,
Do not consider that work surface front ruptures complicated the splitting of generation due to the coal and rock height supporting pressure change and unloading effect causes
Gap network on infiltrative impact, the most also cannot in the case of quantitative angle evaluates this situation of change of coal seam permeability.Coal
How rock mass structure develops under heavily stressed strong Unloading Effect and how to control the mechanical behavior of rock mass, how to describe crack field
Spatial Distribution Pattern, disclose the scaling relations such as its mark length, aperture, to realize description deeper to mining-induced fissure field and modeling
It it is all problem demanding prompt solution.
In order to verify work surface high tension coal mining Coal Under fracture network distribution characteristics and Evolution, it is considered to fluid-wall interaction
In the lower coal seam of effect, the Gas Flow model under the mechanism of gas migration and mining induced fissure effect and numerical method thereof, the completeest
Kind theoretical model and measuring technology, it is achieved mining induced fissure is to the research of gas flow effect in coal and rock, it is necessary to seeking one can
Measure coal and rock crevice space occurrence and the method for distribution and technology.It is thus desirable to the brill of crevice space occurrence in utilizing detectable hole
Borescopic imaging device, but, measure the most at the scene in the borehole imaging instrument probe that coal and rock crack uses without three-dimensional compass, deposit
In problems with:
1. can rotate during pushing in boring at borehole imaging instrument probe, can cause in vedio data post processing
During each two field picture hatching line position when being launched into plane graph different, therefore each frame plane outspread drawing is pieced together
Time will misplace, can not get continuous whole borehole wall crack plane outspread drawing and D prism map.
2. the azimuth holed and inclination angle be the forefathers that drill be the definite value determined, and hole not an absolute straight line, its orientation
Angle and inclination angle the most not keep constant, and boring may occur curved because of the impact of the factors such as drill bit bending or coal seam geological condition
Song, and when drilling, bore direction angle and inclination angle certainly exist certain deviation with value set in advance.It is real that this problem directly results in boring
There is bigger error in the value used when azimuth, border and inclination value are with calculating, ultimately results in the borehole fissure space occurrence meeting recorded
There is bigger error.
Therefore, strengthen technique for taking and the data post-processing software technological means of borehole imaging instrument probe, improve current down-hole drilling
Rock stratum or the practicality of coal seam physical geometry parameter monitoring means and accuracy are problem demanding prompt solutions.
Additionally, often can use centering device during mining construction, centering device can be by roller or other corresponding main element rightings
Between two parties.
Summary of the invention
The technical problem to be solved is to provide a kind of borehole imaging device, and this device can utilize three dimensional internal compass
Borehole imaging instrument probe forms panoramic shooting to boring, it is thus achieved that continuous whole borehole wall crack plane outspread drawing and three-dimensional column
Figure, improves the accuracy of the borehole fissure space occurrence recorded.
The technical solution adopted for the present invention to solve the technical problems is: borehole imaging device, including borehole imaging instrument main frame, brill
Borescopic imaging instrument probe, depth counter, probe push rod, centering device and data processor, be provided with three-dimensional in borehole imaging instrument probe
Compass, described borehole imaging instrument main frame is connected with depth counter and data processor, and the top of borehole imaging instrument probe is provided with residence
Middle device, the bottom of borehole imaging instrument probe is provided with probe push rod, and borehole imaging instrument probe is connected with depth counter.
Concrete, the bottom of borehole imaging instrument probe also is provided with centering device.
As the preferred version of technique scheme, described centering device includes roller, and the diameter of roller matches with the aperture of boring.
Concrete, also include that data wire, described borehole imaging instrument main frame are connected by data wire with depth counter.
Concrete, depth counter includes counting pulley and righting wire casing, and one end of data wire is connected to borehole imaging instrument and visits
Head, its other end sequentially passes through point of contact and the righting wire casing of the counting pulley of depth counter, then with borehole imaging instrument master
Machine connects.
Further, also including piano wire, piano wire is connected between borehole imaging instrument probe and depth counter.
Concrete, described borehole imaging instrument main frame includes image display module, data memory module and main control module, main control
Module is connected with image display module and data memory module respectively.
Concrete, described borehole imaging instrument main frame includes that power module, described power module are accumulator.
Further, this device also includes that charger, described charger are connected with power module.
Preferably, described borehole imaging instrument main frame also includes dimming controlling module, described dimming controlling module and main control module phase
Connect.
The invention has the beneficial effects as follows: the integrated level of the present invention is high, and the borehole imaging instrument probe of three dimensional internal compass can realize panorama
Shooting, relative to the angle (roll angle) rotated at aperture when automatic accurate record bore direction angle, inclination angle and probe push, clearly
Clear degree height, it is possible to the automatic accurate calibration degree of depth, can cylinder comprehensive to all of peephole, full observation imaging.Effectively overcome existing
Borehole imaging instrument is had to change due to probe rotation or bore direction angle and inclination angle and the poster processing soft cannot be utilized to obtain borehole wall
Continuous whole crack occurrence and the drawback of distribution, be substantially improved underground trials equipment simultaneously and install and test vedio data
The condition gathered.The present invention is applicable to crevice space occurrence in detection boring.
Accompanying drawing explanation
Fig. 1 is the borehole imaging device of the present invention scheme of installation when using in down-hole；
Fig. 2 is the theory structure schematic diagram of borehole imaging device of the present invention；
Fig. 3 is the structural representation of the borehole imaging instrument probe of borehole imaging device of the present invention；
Fig. 4 is the theory structure schematic diagram of the three-dimensional compass in borehole imaging instrument probe；
Fig. 5 is angle and the coordinate schematic diagram of the measuring principle of the three-dimensional compass in borehole imaging instrument probe；
Fig. 6 is the operation principle schematic diagram of the data processor processes view data of the present invention；
Fig. 7 is the structural representation of the depth counter of the present invention；
Wherein, 1 is borehole imaging instrument main frame, and 2 is borehole imaging instrument probe, and 3 is depth counter, and 4 is probe push rod, 5
For centering device, 6 is data wire, and 7 is data processor, and 8 is charger, and 91 is tunnel, and 92 is rock stratum, and 93 is coal seam,
90 is boring, and 10 is main control module, and 11 is dimming controlling module, and 12 is image display module, and 13 is data memory module,
21 is three-dimensional compass, and 22 is centering device interface, and 23 is head protector sleeve pipe, and 24 is glass transmission pipe, and 25 is LED white-light emitting
Diode and photographic head install sleeve pipe, and 26 install sleeve for signal plate, and 27 is three-dimensional compass sleeve, and 28 for protecting tail sleeve pipe, and 31
For counting pulley, 32 is righting wire casing, and 30 is main frame, and 311 is the first pulley, and 312 is the second pulley, and 33 is breach, 34
For signal launch hole, 35 is support, and 36 is base, and 37 is wire casing side column, and O-XYZ is geographic coordinate system, and O-xyz is sieve
Dish (carrier) coordinate system, Hx、Hy、HzIt it is the earth magnetism field intensity of the compass coordinate system x, y, z axle that three axle magnetoresistive transducers are measured
Degree component；gx、gyBe attitude angle acceleration transducer record compass coordinate system x, the gravitational acceleration component of y-axis；A/D generation
Table simulation digital signal converter；N-S axle represents geographical north-south axis；N '-S ' axle represents earth magnetism north-south axis；α represents
Azimuth, is defined as the angle of the compass direction of advance (x-axis) projection on horizontal plane XOY and north geographic pole ON, from
ON starts clockwise for just, and scope is 0～360 °；Represent inclination angle, be defined as compass direction of advance (x-axis) and its
The angle of the projection on horizontal plane XOY, faces upward as just, and nutation is negative, and scope is-90 °～90 °；θ represents roll angle, definition
For direction (y-axis) vertical with direction of advance on compass plane and its angle projected in the horizontal plane, turn right as just, turn left
Being negative, scope is-180 °～180 °；α ' represents magnetic azimuth, is defined as compass direction of advance (x-axis) on horizontal plane XOY
The angle of projection and magnetic north ON '；β represents magnetic declination；L is to extract each two field picture from the video that this device shoots
Length, its scope is at 1mm≤L≤5mm；D is the aperture of boring；N is for splicing whole borehole wall plane graph or D prism map
The frame number of required image；θ1, θ2..., θnIt is respectively the 1st, 2 ..., the borehole imaging instrument spy that n two field picture center is corresponding
The roll angle of head.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, technical scheme is described in detail.
As shown in Fig. 1～Fig. 2, the borehole imaging device of the present invention, including borehole imaging instrument main frame 1, borehole imaging instrument probe 2,
Depth counter 3, probe push rod 4, centering device 5 and data processor 7, be provided with three-dimensional compass in borehole imaging instrument probe 2,
Described borehole imaging instrument main frame 1 is connected with depth counter 3 and data processor 7, borehole imaging instrument probe 2 top set
Centering device 5, the bottom of borehole imaging instrument probe 2 is had to be provided with probe push rod 4, borehole imaging instrument probe 2 and depth counter 3
It is connected.
During owing to using in down-hole, data processor 7 can be connected with borehole imaging instrument main frame 1, it is simple to processes data in time；
The image transmitting that can also be detected by borehole imaging instrument probe 2 is also saved in borehole imaging instrument main frame 1, stays in down-hole detection
After complete, after returning to ground, carry out the process work of data.Therefore, Fig. 1 can place data processor 7, it is also possible to
The most do not place data processor 7.
In order to strengthen centering effect, the top of borehole imaging instrument probe 2 and bottom are connected to centering device 5, centering device 5
Roller diameter matches with the aperture of boring, and specifically, the roller diameter of centering device 5 can be suitable with the aperture of boring, occupies
The roller diameter of middle device 5 can also be slightly less than the aperture of boring, it is however generally that, the roller diameter of centering device 5 is compared to drilling hole
Conveniently, most suitable is the roller diameter 10mm less than boring aperture of centering device 5, in order to make for footpath little 5～about 15mm ratio
Borehole imaging instrument probe 2 centrage overlaps with drill center line, prevent because of borehole imaging instrument probe 2 double swerve or swing
The borehole wall circumferential images brightness causing picked-up is different.Residence is had in addition it is also possible to only connect bottom borehole imaging instrument probe 2
Middle device 5.
Borehole imaging instrument main frame 1 includes dimming controlling module 11, image display module 12, data memory module 13 and main control
Module 10, main control module 10 respectively with dimming controlling module 11, image display module 12 and data memory module 13.Bore
The power module of borescopic imaging instrument main frame 1 can be accumulator, it is simple to carry, and uses in tunnel.Further, this device
Also including charger 8, described charger 8 is connected with accumulator, repeatedly can be charged accumulator, in order to cost-effective,
Improve the feature of environmental protection.
Borehole imaging instrument probe 2 overall structure is as it is shown on figure 3, its one or both ends are provided with centering device interface 22, in order to between two parties
Device 5 is connected.Head protector sleeve pipe 23 and protect tail sleeve pipe 28 and protect the top and bottom of borehole imaging instrument probe 2 respectively.LED is white
The light beam that LED white light emitting diode in light-emitting diode and photographic head installation sleeve pipe 25 sends can pass through glass transmission
Pipe 24 is irradiated in drilling hole, is used for illuminating.Three-dimensional compass 21 it is also equipped with in the three-dimensional compass sleeve 27 of this probe, in order to
Automatically azimuth and the inclination angle of boring, and the roll angle of borehole imaging instrument probe 2 are recorded.The signal in sleeve 26 installed by signal plate
Plate is used for obtaining and transmitting camera data.
During specifically used, depth counter 3 is typically fixedly placed in the place that on roadway floor, distance observation aperture is nearer,
Position immobilizes, in order to easily and accurately record drilling depth data during borehole imaging instrument probe pushes；Borehole imaging
Instrument main frame 1 can be placed near depth counter 3；Data are used between borehole imaging instrument main frame 1 and borehole imaging instrument probe 2
Line 6 connects, and this data wire must count at the point of contact of pulleys 31 through two of depth counter 3 and righting wire casing, and
Make the data wire between depth counter 3 and borehole imaging instrument probe 2 remain during measurement and tighten straight condition.Visiting
During survey is measured, gradually being advanced borehole imaging instrument probe 2 in boring by probe push rod 4, borehole imaging instrument probe 2 is certainly
Dynamic record bore direction angle and inclination angle, and moment record borehole imaging instrument probe 2 is relative to the anglec of rotation (rolling of hell position
Angle), then the view data recorded is transferred to borehole imaging instrument main frame 1, and the data being stored in borehole imaging instrument main frame 1 are deposited
In storage module, it is eventually transferred to computer, utilizes data processor 7 that its process is obtained continuous whole borehole wall three-dimensional space
Between Fracture Networks.Having piano wire furthermore, it is possible to be connected between borehole imaging instrument probe 2 with depth counter 3, piano wire exists
This device remains when using tightens straight condition, in order to ensure that counting is accurately.Borehole imaging instrument probe 2 and borehole imaging instrument
Radio connection can be used between main frame 1 to carry out data signal transmission.
The caliber of the borehole imaging instrument probe 2 of this device can be changed a social system, strong adaptability according to boring aperture difference.
The theory structure schematic diagram of three-dimensional compass as shown in Figure 4, three-dimensional compass can automatically monitor boring spatial attitude and
The roll angle of borehole imaging instrument probe 2, its measuring principle is as follows:
Three-dimensional compass relative to geographic coordinate system tri-axles of X, Y, Z around rotate counterclockwise angle be respectively defined as roll angle θ,
Inclination angleAnd azimuth angle alpha, related angle is with coordinate as shown in Figure 5.Accelerate according to the gravity that attitude angle acceleration transducer records
Degree is respectively g in the x-axis of compass coordinate system and the component of acceleration in y-axis directionxAnd gy, can directly be calculated the inclination angle of boringWith roll angle θ, calculation relational expression is as follows:
If the magnetic vector value that three axle magnetoresistive transducer measurements are arrived coordinate of correspondence in compass coordinate system (O-xyz) is (Hx, Hy,
Hz), decomposing respective coordinates in geographic coordinate system (O-XYZ) is (HX, HY, HZ).When three-dimensional compass is in motor process
There is roll angle θ and inclination angleTime, utilization orientation Method of Cosine, by being multiplied by roll angle θ and inclination angleCaused direction cosine matrix
The conversion relational expression between compass coordinate system and geographic coordinate system can be obtained as follows:
Coordinate (the H that the magnetic vector value measured by three axle magnetoresistive transducers is corresponding in compass coordinate systemx, Hy, Hz) bring into
In formula, obtain magnetic vector value at geographic coordinate system X, the component H of Y-axisX、HY:
HY=HyCOSθ+Hzsinθ
The most now, geographic coordinate system X-axis (compass direction of advance x-axis is in the projection of horizontal plane) and angle that is three in magnetic north direction
Magnetic azimuth α of dimension compass ' can be calculated by following formula:
α'=arctan(HY/HX)
Owing to earth magnetism south poles and geographical south poles not quite identical, magnetic north direction and the north, ground are to there is certain angle,
It is referred to as magnetic declination, is designated as β, and azimuth angle alpha is geographic coordinate system X-axis (compass direction of advance x-axis is in the projection of horizontal plane)
With ground the north to angle, therefore
α=α'+β
The magnetic biasing angle beta in the most each area is a fixed value, can import with tabular form in the controller of three-dimensional compass, and root
The concrete automatic computer azimuth angle of value is selected according to the information of GPS.
Data processor 7 can according to borehole imaging instrument probe 2 picked-up with bore direction angle and inclination angle, and borehole imaging
Before and after instrument probe 2 roll angle data, two images carry out Auto-matching and splicing, obtain continuous whole borehole wall plane graph and
D prism map；Its operation principle is as shown in Figure 6, specific as follows:
With orifice position as starting point, from hole-drilling video information, extract the least result of a length of L(L successively more along drilling depth direction
Accurately, typically take 20～50 pixel length) cylindrical bore image, image number consecutively is 1,2 ..., n, carry simultaneously
Take the roll angle θ of every borehole imaging instrument probe corresponding to image center location1, θ2..., θn(being just in a counterclockwise direction), and
Successively every pictures is rotated in a clockwise direction θ1, θ2..., θnAngle, then by every cylinder graph picture along direct north
Cutting line be launched into rectangle plane figure, finally from 1 to n, adjacent expanded view is spliced successively the plane obtaining whole borehole wall
Expanded view, also can be obtained the D prism map of whole borehole wall by expanded view.
Being the structural representation of depth counter 3 as shown in Figure 7, base 36 is provided with support 35 and wire casing side column 37, wire casing
Form righting wire casing 32 between side column 37, support 35 is fixed with main frame the 30, first pulley 311 and the second pulley 312, and sets
There is signal launch hole 34.Depth counter 3 can registered depth data automatically, operation principle is as follows:
When implementing detection, one end of data wire 6 connects borehole imaging instrument probe 2, and the other end is successively through two counting pulleys
At point of contact and righting wire casing 32, finally it is connected with borehole imaging instrument main frame 1.Wherein, two counting pulleys point of contacts at and boring
Data wire between imager probe 2 must be tightened and stretch, it is simple to measures and reduces measurement error.Through righting wire casing 32 to make
Obtain in the rolling planes that data wire is maintained at two counting pulleys so that it is more accurate to count.In the main frame 30 of depth counter 3
Including pulse signal emitter and photoelectric encoder, pulse signal emitter launches signal by signal launch hole.Assume that first is sliding
The radius of wheel 311 is R, and there is M equidistantly breach at edge, and a diameter of 2r of data wire 6, before starting counting up, by wherein one
Individual breach 33 is directed at signal launch hole 34, and after probe pushes, the photoelectric encoder tracer signal being connected with signal projector is worn
The number of times crossing breach is N, and now drilling depth is h., according to data wire by the length at the first pulley 311 point of contact equal to first
The circumference that at pulley 311 point of contact, data wire central point turns over, can be by formula calculated below calculating drilling depth h:
Wherein d=2 π (r+R)/M is pulse distance, represents the data wire length between depth counter 3 nearby optical pulses, shadow
The external factor ringing this value is the first pulley 311 radius and data linear diameter.Need d value is carried out before carrying out testing for the first time
Calibration, the method for calibration is: first assume that a pulse distance value is d0, data wire 6 is spaced known length L and makees two marks
Note, when first labelling arrives at two pulley point of contacts, writes down the depth value d of borehole imaging instrument main frame 1 display1, when second
When labelling arrives at two pulley point of contacts, write down the depth value d of borehole imaging instrument main frame 1 display2, d value is the most accurately
d=Ld0/(d2-d1), implement, during detection, pulse distance is arranged to this value.
According to above computing rule, photoelectric encoder just can calculate drilling depth h during probe pushes at any time, and by the degree of depth
Data pass to borehole imaging instrument main frame 1 by data wire.
Utilize present invention operating procedure of crevice space occurrence in the detection boring of down-hole as follows:
1) in underworkings, according to test requirements document, in coal seam, boring is drilled through according to bore size orientation.
2) after drilling via formations, connect all parts of the present invention according to the theory structure schematic diagram of Fig. 2, can use such as figure
The mounting structure of 1, lays and fixes borehole imaging instrument main frame 1 and depth counter 3 in the tunnel of test site, boring
Imager probe 2 is placed at the aperture in coal seam, and the data wire 6 between borehole imaging instrument probe 2 and depth counter 3 needs
Keep tightening straight condition, it is simple to measure and reduce measurement error.
3) open borehole imaging instrument main frame 1, acquisition parameter is correctly set, carry out real-time testing；Gradually adjunction probe push rod 4,
In hole, borehole imaging instrument probe 2 is promoted with suitable speed.
In the process, borehole imaging instrument probe 2 can be with rollback, and now borehole imaging instrument probe 2 continues shooting video but deep
Degree enumerator 3 stops registered depth data in rollback two-way process, therefore can automatically ignore this when follow-up data process
Part image data.
4), after arrival fathoms, the vedio data of shooting is stored in borehole imaging instrument main frame 1.
Borehole imaging instrument main frame 1 can by the video signal transmitted by borehole imaging instrument probe 2 and by depth counter 3 transmit deep
Degree signal is converted into image digital signal and stores view data in its data memory module.
5) utilize data processor 7 that the vedio data in borehole imaging instrument main frame 1 is processed, obtain continuous whole
Borehole wall plane graph and D prism map and crack occurrence and distribution.
Embodiment
In this example, borehole imaging instrument main frame 1 in rectangular shape, its a length of 288mm, a width of 223mm, a height of 95mm,
Weigh about 3kg, the rechargeable nickel-hydrogen battery of two groups of rated voltages respectively 5.5～7.5V and 10～15V power, work continuously
Time is more than 8 hours.The dimming controlling module 11 of borehole imaging instrument main frame 1 for by borehole imaging instrument probe 2 be adjusted to close most
Suitable brightness, in order to improve shooting definition.So that Ni-MH battery can Reusability, cost-effective, environmental protection,
The device of this example also includes that charger 8, described charger 8 are connected with the Ni-MH battery of borehole imaging instrument main frame 1, nominal operation
Voltage is 220V.
Borehole imaging instrument probe 2 is in cylinder, and its basal diameter is 24mm, and a height of 303mm weighs about 1kg, boring becomes
As instrument main frame 1 is powered, rated operational voltage is 12V；Its positioned inside has three-dimensional compass, photographic head and LED white-light emitting two
Pole is managed, and at the camera lens 3cm of borehole imaging instrument probe 2, its light illumination is not less than 30Lux.The knot of depth counter 3
Structure, as it is shown in fig. 7, a length of 164mm of base plate, a width of 160mm, a height of 174mm of support, weighs about 2.5kg, by borehole imaging
It is powered by instrument main frame 1, and rated operational voltage is 5V, and counting precision is 0.1mm.The quantity of probe push rod 4 can be according to boring
Depending on hole depth, as can 80, in cylinder, a diameter of 18mm, a height of 1000mm, every weighs about 0.3kg.Centering device 5
Being 2, each centering device 5 is made up of the central shaft of a long 0.4m and the disk of three diameter 65mm, each weighs about 0.2kg；
Its disk i.e. its roller, its diameter, depending on boring aperture, need to match with boring.Data wire 6 is utilized to connect borehole imaging instrument
Main frame 1 and borehole imaging instrument probe 2, depending on long 80m(length can be according to hole depth), diameter 8mm, always weigh about 8kg；Also need
Data wire 6 to be utilized connects borehole imaging instrument main frame 1 and depth counter 3, long 3m, diameter 8mm, weighs about 0.3kg；This
Outward, computer is if desired utilized as data processor 7, vedio data to be processed, then at borehole imaging instrument main frame 1
And between computer, also connection has data wire, long 0.8m, diameter 8mm, weighs about 0.08kg.
The present embodiment is to carrying out the imaging detection test of crevice space occurrence in drilling hole under mine, crack is spied on boring and is arranged in machine
In face of adopting in lane at side 50m, it is at 3m away from bottom plate heights that drilling orifice is positioned at Jin Xiang right, tunnel rib, and bore direction angle is
From rib normal direction to work surface inclined 45 °, inclination angle is 24 °, and boring aperture is 75mm, and boring hole depth is 54m, and concrete operations are such as
Under:
1), after drilling through boring according to bore size orientation in coal seam, this device is installed:
Depth counter 3 is fixed on roadway floor immediately below peephole aperture at rib about 1m, adjusts counting pulley 31
Direction make counting pulley disc, data wire and aperture be located substantially in same plane.Borehole imaging instrument main frame 1 is placed in deeply
Near degree enumerator 3, at about 1.5m, farthest less than 3m, to ensure that line arrangement is simple.It is said that in general, it is deep
Degree enumerator 3 is 3m to the ultimate range of the signal transmission of borehole imaging instrument main frame 1.One end by the data wire of long 80m
Being connected to borehole imaging instrument probe 2, the other end successively passes the point of contacts of two counting pulleys 31 of depth counter 3 and holds up
Positive wire casing 32, is then connected with borehole imaging instrument main frame, it is simple to measure and reduce measurement error.Two roller diameters are
The centering device 5 of 65mm is connected to the two ends of borehole imaging instrument probe 2, connects in the bottom of borehole imaging instrument probe 2
The probe push rod 4 of upper two root lengths 1m, is then put into drilling orifice position by borehole imaging instrument probe 2, and by itself and counting
Data wire between pulley 31 is tightened and is stretched.
2) open borehole imaging instrument main frame 1, acquisition parameter is correctly set, carry out real-time testing；And regulate its brightness adjustment control mould
Block to optimal imaging state, the gradually probe push rod 4 of a length of 1m of adjunction, with the speed every about minute 2m smoothly to
Boring promotes borehole imaging instrument probe 2, to ensure that recorded video is clear.
3) arrive and gather and preserve vedio data after investigation depth in borehole imaging instrument main frame 1, dismantle the most successively
Probe push rod 4, makes borehole imaging instrument probe 2 gradually rollback until being drawn off.
4) utilize data processor 7 to process the vedio data in borehole imaging instrument main frame 1, obtain continuous whole boring
Hole wall plane graph and D prism map and crack occurrence and distribution, this step can realize in underworkings.Additionally, should
Step can also enter indoor and carry out realizing, by borehole imaging instrument main frame 1 when data process after measuring complete provision for disengagement
In vedio data be transferred in computer and utilize the data post-processing software of computer to process image real time transfer.
Claims (10)
1. borehole imaging device, it is characterised in that include borehole imaging instrument main frame (1), borehole imaging instrument probe (2), the degree of depth
Enumerator (3), probe push rod (4), centering device (5) and data processor (7), borehole imaging instrument probe is provided with in (2)
Three-dimensional compass, described borehole imaging instrument main frame (1) is connected with depth counter (3) and data processor (7), borehole imaging
The top of instrument probe (2) is provided with centering device (5), and the bottom of borehole imaging instrument probe (2) is provided with probe push rod (4), bores
Borescopic imaging instrument probe (2) is connected with depth counter (3)；
Described borehole imaging instrument probe (2) is used for boring panoramic shooting, and by three-dimensional compass record during panoramic shooting
The roll angle when azimuth of boring, inclination angle, and borehole imaging instrument probe (2) push；Described azimuth, inclination angle and roll angle are used
The population parameter of crack spatial shape in for tolerance boring: move towards, be inclined to and inclination angle；
Described data processor (7) for according to borehole imaging instrument probe (2) absorb boring in population parameter crack before
Rear two images carry out Auto-matching and splicing, obtain continuous whole borehole wall plane graph and D prism map, concrete steps
As follows:
With orifice position as starting point, from hole-drilling video information, extract the cylinder bur hole pattern of a length of L successively along drilling depth direction
Picture, image number consecutively is 1,2 ..., n, L are 20～50 pixel length, extract every image center location correspondence simultaneously
The roll angle θ of borehole imaging instrument probe1, θ2..., θn, and successively every pictures is rotated in a clockwise direction θ1, θ2...,
θnAngle, is then launched into rectangle plane figure by every cylinder graph picture along the cutting line of direct north, finally from 1 to n by phase
Adjacent expanded view splices the plane outspread drawing obtaining whole borehole wall successively.
2. borehole imaging device as claimed in claim 1, it is characterised in that the bottom of borehole imaging instrument probe (2) also sets
There is centering device (5).
3. borehole imaging device as claimed in claim 1, it is characterised in that described centering device (5) includes roller, roller
The aperture of diameter and boring match.
4. borehole imaging device as claimed in claim 1, it is characterised in that described borehole imaging instrument main frame (1) and the degree of depth
Enumerator (3) is connected by data wire (6).
5. borehole imaging device as claimed in claim 1, it is characterised in that also include data wire, depth counter (3)
Including counting pulley and righting wire casing, one end of data wire is connected to borehole imaging instrument probe (2), and its other end is worn successively
Cross point of contact and the righting wire casing of the counting pulley of depth counter (3), be then connected with borehole imaging instrument main frame (1).
6. borehole imaging device as claimed in claim 5, it is characterised in that borehole imaging instrument probe (2) counts with the degree of depth
Data wire between device (3) keeps tightening straight condition.
7. borehole imaging device as claimed in claim 1, it is characterised in that described borehole imaging instrument main frame (1) includes figure
Shape display module, data memory module and main control module, main control module respectively with image display module and data memory module
It is connected.
8. borehole imaging device as claimed in claim 1, it is characterised in that described borehole imaging instrument main frame (1) includes electricity
Source module, described power module is accumulator.
9. borehole imaging device as claimed in claim 8, it is characterised in that also include charger (8), described charger (8)
It is connected with power module.
10. borehole imaging device as claimed in claim 1, it is characterised in that described borehole imaging instrument main frame (1) also includes
Dimming controlling module, described dimming controlling module is connected with main control module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410016625.7A CN103711484B (en) | 2014-01-14 | 2014-01-14 | borehole imaging device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410016625.7A CN103711484B (en) | 2014-01-14 | 2014-01-14 | borehole imaging device |
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| CN103711484A CN103711484A (en) | 2014-04-09 |
| CN103711484B true CN103711484B (en) | 2016-08-24 |
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