CN109031430A - A kind of detection method of list borehole geologic radar orienting reflex imaging - Google Patents
A kind of detection method of list borehole geologic radar orienting reflex imaging Download PDFInfo
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- CN109031430A CN109031430A CN201810755264.6A CN201810755264A CN109031430A CN 109031430 A CN109031430 A CN 109031430A CN 201810755264 A CN201810755264 A CN 201810755264A CN 109031430 A CN109031430 A CN 109031430A
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/12—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with electromagnetic waves
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Abstract
The invention discloses a kind of detection methods of single borehole geologic radar orienting reflex imaging, including drill sampling, geological radar antenna is first put into foot of hole, geological radar antenna is retracted into ground again, borehole radar directional detection pipe is attached by screw thread, detection tube fixer is fixed with ground, geological radar antenna is put into the radar detection channel in borehole radar directional detection pipe, geological radar antenna connects measuring wheel and computer, it is adjusted using detection tube fixer and tripod into borehole radar directional detection tube angulation, the reflection radar wave image and each fixed angle for comparing the total space reflect radar wave image, judge the specific orientation of anomalous body；The present invention is detected by different directions, is solved the problems, such as that single hole geological radar catoptric imaging can not determine reflector orientation, is of great significance to engineering construction and geologic body transparence.
Description
Technical field
The present invention relates to engineering geology detection technology fields, and in particular to a kind of list borehole geologic radar orienting reflex imaging
Detection method.
Background technique
Geological prospecting is to be reconnoitred, detected to geology by various means, method, determines suitable supporting course, according to
The foundation bearing capacity of supporting course, determines type of foundation, calculates the enquiry-based activity of underlying parameter.Wherein physical prospecting abbreviation object
Visit, be using the difference of the physical properties such as the density of various rocks and ore, magnetism, electrical property, elasticity, radioactivity as Research foundation,
With different physical method and geophysical prospecting equipment, the variation of natural or artificial geophysical field is detected, by analyzing, studying acquisition
Use of Geophysical Data, infer, explain geological structure and distribution of mineral deposits situation.
Borehole radar technology is directly entered underground depth by drilling as a kind of borehole geophysics method, radar antenna
Portion can use the physical difference of underground medium, provide a certain range of reflection radar time domain waveform cross-sectional images around drilling,
To effectively expand investigative range, the feelings of a certain range of earth formation, Tectonic Rock Mass and karsts developing area around drilling are found out
Condition makes up the limitation of the quantity and layout drilled in Practical Project.For the borehole radar antenna being widely used at present, transmitting and
Received reflection radar wave signal is all isotropic directivity, therefore the radar of one borehole can only obtain distance and form away from drilling
Etc. information, can not judge the orientation of reflector, i.e., reflector can not be known using detection range as the azimuth of the circumference of radius.
The directional aerial of borehole radar is not commonly used in Practical Project at present also in development phase, also just like antenna itself orientation
Many problems such as fixed need to solve.How using conventional borehole radar equipment, realize that orienting reflex imaging is urgently to be solved
One problem.
Summary of the invention
For the above technical problems, the present invention provides one kind to be reflected into image space using geological radar in the borehole
The method of the geological conditions in the artificial setting orientation of formula detection；Using the borehole radar directional detection pipe for being filled with absorbing material, lead to
The detection to borehole circumference different direction is crossed, obtains the specific orientation in drilling of drilling abnormal reflection body, with solving single hole
The problem of matter radar reflection imaging can not judge reflector orientation.
The technical solution of the present invention is as follows: a kind of detection method of list borehole geologic radar orienting reflex imaging, mainly includes
Following steps:
(1) drill sampling analyzes core to obtain corresponding first geological information to obtain core and drilling；
(2) geological radar antenna is first put into foot of hole, then geological radar antenna is retracted into ground, in the process
To the reflection radar wave image of the borehole geologic radar total space；
(3) borehole radar directional detection pipe is attached by screw thread, is provided with thunder in borehole radar directional detection pipe
It is provided with filler up to detection channels, and in borehole radar directional detection pipe, will be connected by detection tube fixer and tripod
Borehole radar directional detection pipe together is put into drilling, and borehole radar directional detection pipe is made to reach foot of hole, with
Guarantee that radar antenna channel is unimpeded；
(4) detection tube fixer is fixed with ground, and adjusts detection direction, radar detection channel is close to geology
Side is detection direction；
(5) geological radar antenna is put into the radar detection channel in borehole radar directional detection pipe, geological radar antenna
Measuring wheel and computer are connected, first puts geological radar antenna into foot of hole, then geological radar antenna is retracted into aperture, herein mistake
Orienting reflex imaging detection is completed in journey；
(6) it is adjusted using detection tube fixer and tripod into borehole radar directional detection tube angulation, carries out step 5 again
Catoptric imaging detection process；
(7) the reflection radar wave image and each fixed angle for comparing the total space reflect radar wave image, judge anomalous body
Specific orientation.
Further, borehole radar directional detection pipe is nonmetallic materials, and nonmetallic materials are pvc material, polychlorostyrene
Vinyl material has good wear-resisting, corrosion resistance, effectively prevents the substances such as acid, alkali, salt in geology and orients to borehole radar
Detection pipes damage, and extend the service life of borehole radar directional detection pipe.
Further, filler is dielectric loss type absorbing material, and dielectric loss type absorbing material is graphite epoxy resin
Composite material or carbon fiber compound polyurethane material, dielectric loss type absorbing material can not shield the anti-of non-detection direction completely
Radar wave is penetrated, but can be with the signal of partly shielding effect and the back wave for non-detection direction of decaying, therefore the comparison total space can be passed through
Reflection radar wave image and each fixed angle reflect radar wave image, determine the orientation of abnormal reflection, reach directional detection
Purpose.
Further, geological radar antenna includes transmitting radar antenna and radar receiving antenna, and geological radar antenna passes through
Radar data line is connected to radar host computer.
Further, detection tube fixer include fixed ring, supporting beam, arc bracket, adjuster, clamping plate one, clamping plate two,
Adjusting rod, there are two supporting beams, and two supporting beams are separately positioned on the left and right ends of fixed ring, and there are four adjusters, four tune
Section device is separately positioned on the end of two arc brackets, and there are two clamping plates one, and two clamping plates one are movably arranged on fixed ring respectively
The left and right sides, two clamping plates one and fixed ring junction be provided with pressure spring, 2 two, clamping plate, the activity respectively of two clamping plates two
Upper and lower ends on the inside of fixed ring are set, and there are two adjusting rods, and two adjusting rods are threaded in the upper and lower of fixed ring respectively
Both ends, two adjusting rods are contacted with two clamping plates two respectively, and adjusting rod is for pushing clamping plate two mobile, convenient for fixed to borehole radar
It is fixed, adjusts to detection pipes.
Further, it is provided with anti-skid rubber cushion on clamping plate one and clamping plate two, effectively prevent the thunder that drills during only using
Sliding is generated up to directional detection pipe, detection result is had an impact.
Further, tripod includes mounting disc, supporting leg, cone point, fixing seat, pulley, and there are three supporting legs, and three
A supporting leg is hinged on mounting disc lower end, and three supporting legs and mounting disc junction are provided with fastening bolt, and supporting leg is flexible
Structure is provided with adjusting stud on supporting leg, and there are three cone points, and three cone points are separately positioned on three supporting legs
Lower end, fixing seat setting are arranged in fixing seat in mounting disc upper end, moveable roller, and supporting leg is hinged with mounting disc, and convenient pair
The support angle of supporting leg is adjusted, and can also be adjusted with the bearing height to supporting leg, simple, convenient.
Further, supporting leg and cone point junction are provided with fixed disk, are provided in fixed disk and grab ground double wedge, energy
It enough prevents fixed disk from moving in the horizontal direction, improves the reliability of device.
Further, it is provided with guiding groove on cone point, is conducive to cone point and enters in hard geology, to three
Corner bracket plays the effect for stablizing fixation.
Compared with prior art, the invention has the benefit that a kind of directional drilling 3 D stereo provided by the invention
The method of matter acquisition of information, is detected by different directions, and reflector orientation can not be determined by solving single hole geological radar catoptric imaging
The problem of, it is of great significance to engineering construction and geologic body transparence；Prediction early period is carried out for engineering construction, avoids later period work
Journey accident, is effectively reduced engineering cost；The quantity for greatly reducing detection drilling, saves time and cost, improves working efficiency；It is logical
The harmful geologic body of a certain range of Cave and conduit pipe etc. around drilling can be detected and carry out fine by crossing the device
Effective detection forecast.
Detailed description of the invention
Fig. 1 is drilling radar reflection imaging mode detection schematic diagram in ground of the invention；
Fig. 2 is that directionally borehole radar catoptric imaging mode of the invention detects schematic diagram；
Fig. 3 is borehole radar directional detection pipe structural schematic diagram of the invention；
Fig. 4 is of the invention to determine borehole radar directional detection tube section figure；
Fig. 5 is the structural schematic diagram of tripod of the invention；
Fig. 6 is the attachment structure schematic diagram of cone point and fixed disk of the invention；
Fig. 7 is the structural schematic diagram of detection tube fixer of the invention；
Fig. 8 is the main view of detection tube fixer of the invention；
Wherein, 1- detects tube fixer, 10- fixed ring, 11- supporting beam, 12- arc bracket, 13- adjuster, 14- clamping plate
One, 15- clamping plate two, 16- adjusting rod, 2- tripod, 20- mounting disc, 21- supporting leg, 22- cone point, 220- guiding groove,
23- fixing seat, 24- pulley, 25- fixed disk, 250- grab ground double wedge.
Specific embodiment
Embodiment: a kind of detection method of list borehole geologic radar orienting reflex imaging mainly comprises the steps that
(1) drill sampling analyzes core to obtain corresponding first geological information to obtain core and drilling；
(2) geological radar antenna is first put into foot of hole, then geological radar antenna is retracted into ground, in the process
To the reflection radar wave image of the borehole geologic radar total space；Geological radar antenna includes that transmitting radar antenna and radar receive day
Line, geological radar antenna are connected to radar host computer by radar data line；
(3) borehole radar directional detection pipe is attached by screw thread, is provided with thunder in borehole radar directional detection pipe
Up to detection channels, and filler is provided in borehole radar directional detection pipe, filler is dielectric loss type absorbing material graphite
Epoxy resin composite material, dielectric loss type absorbing material can not shield the reflection radar wave of non-detection direction completely, but can be with
The signal of the back wave of partly shielding effect and non-detection direction of decaying, therefore the reflection radar wave image of the comparison total space can be passed through
Radar wave image is reflected with each fixed angle, the orientation of abnormal reflection is determined, achievees the purpose that directional detection；Borehole radar orientation
Detection pipes are polyvinyl chloride pvc material；The borehole radar to link together is oriented by detection tube fixer 1 and tripod 2
Detection pipes are put into drilling, and borehole radar directional detection pipe is made to reach foot of hole, to guarantee that radar antenna channel is unimpeded；
(4) detection tube fixer 1 is fixed with ground, and adjusts detection direction, radar detection channel is close to geology
Side be detection direction；
(5) geological radar antenna is put into the radar detection channel in borehole radar directional detection pipe, geological radar antenna
Measuring wheel and computer are connected, first puts geological radar antenna into foot of hole, then geological radar antenna is retracted into aperture, herein mistake
Orienting reflex imaging detection is completed in journey；
(6) it is adjusted using detection tube fixer 1 and tripod 2 into borehole radar directional detection tube angulation, is walked again
Suddenly the catoptric imaging detection process of (5)；
(7) the reflection radar wave image and each fixed angle for comparing the total space reflect radar wave image, judge anomalous body
Specific orientation.
Wherein, detection tube fixer 1 include fixed ring 10, supporting beam 11, arc bracket 12, adjuster 13, clamping plate 1,
Clamping plate 2 15, adjusting rod 16, there are two supporting beams 11, and two supporting beams 11 are separately positioned on the left and right ends of fixed ring 10, adjusts
It saves there are four devices 13, four adjusters 13 are separately positioned on the end of two arc brackets 12, and there are two clamping plates 1, two folders
Plate 1 is movably arranged on the left and right sides of fixed ring 10 respectively, and two clamping plates 1 and 10 junction of fixed ring are provided with pressure
Spring, 2 15 two, clamping plate, two clamping plates 2 15 are movably arranged on the upper and lower ends of 10 inside of fixed ring, clamping plate 1 and folder respectively
Anti-skid rubber cushion is provided on plate 2 15；There are two adjusting rods 16, and two adjusting rods 16 are threaded in fixed ring 10 respectively
Upper and lower ends, two adjusting rods 16 contact with two clamping plates 2 15 respectively, and adjusting rod 16 is for pushing clamping plate 2 15 mobile.
Tripod 2 includes mounting disc 20, supporting leg 21, cone point 22, fixing seat 23, pulley 24, and supporting leg 21 has three
A, three supporting legs 21 are hinged on 20 lower end of mounting disc, and three supporting legs 21 and 20 junction of mounting disc are provided with fastening bolt,
Supporting leg 21 is stretching structure, is provided with adjusting stud on supporting leg 21, there are three cone points 22, and three cone points 22 divide
The lower end of three supporting legs 21 is not set, guiding groove 220, supporting leg 21 and cone point 22 are provided on cone point 22
Junction is provided with fixed disk 25, is provided in fixed disk 25 and grabs ground double wedge 250；Fixing seat 23 is arranged in 20 upper end of mounting disc,
Pulley 24 is movably arranged in fixing seat 23.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify to technical solution documented by previous embodiment or equivalent replacement of some of the technical features；And
These are modified or replaceed, the spirit and model of technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (8)
1. a kind of detection method of list borehole geologic radar orienting reflex imaging, which is characterized in that mainly comprise the steps that
(1) drill sampling analyzes the core to obtain corresponding first geological information to obtain core and drilling；
(2) geological radar antenna is first put into the foot of hole, then geological radar antenna is retracted into ground, in the process
To the reflection radar wave image of the borehole geologic radar total space；
(3) borehole radar directional detection pipe is attached by screw thread, radar spy is provided in borehole radar directional detection pipe
Channel is surveyed, and is provided with filler in borehole radar directional detection pipe, it will even by detection tube fixer (1) and tripod (2)
The borehole radar directional detection pipe being connected together is put into drilling, and borehole radar directional detection pipe is made to reach foot of hole,
To guarantee that radar antenna channel is unimpeded；
(4) detection tube fixer (1) is fixed with ground, and adjusts detection direction, radar detection channel is close to geology
Side is detection direction；
(5) geological radar antenna is put into the radar detection channel in borehole radar directional detection pipe, geological radar antenna connection
Measuring wheel and computer first put geological radar antenna into foot of hole, then geological radar antenna are retracted aperture, in the process
Complete orienting reflex imaging detection；
(6) it is adjusted using detection tube fixer (1) and tripod (2) into borehole radar directional detection tube angulation, is walked again
Rapid 5 catoptric imaging detection process；
(7) the reflection radar wave image and each fixed angle for comparing the total space reflect radar wave image, judge the specific of anomalous body
Orientation.
2. a kind of detection method of single borehole geologic radar orienting reflex imaging according to claim 1, which is characterized in that
The borehole radar directional detection pipe is nonmetallic materials, and the nonmetallic materials are polyvinyl chloride (PVC) material.
3. a kind of detection method of single borehole geologic radar orienting reflex imaging according to claim 1, which is characterized in that
The filler be dielectric loss type absorbing material, the dielectric loss type absorbing material be graphite epoxy composite or
Carbon fiber compound polyurethane material.
4. a kind of detection method of single borehole geologic radar orienting reflex imaging according to claim 1, which is characterized in that
The geological radar antenna includes transmitting radar antenna and radar receiving antenna, and geological radar antenna is connected by radar data line
To radar host computer.
5. a kind of detection method of single borehole geologic radar orienting reflex imaging according to claim 1, which is characterized in that
The detection tube fixer (1) includes fixed ring (10), supporting beam (11), arc bracket (12), adjuster (13), clamping plate one
(14), clamping plate two (15), adjusting rod (16), there are two the supporting beams (11), and two supporting beams (11) are separately positioned on described
The left and right ends of fixed ring (10), there are four the adjusters (13), and four adjusters (13) are separately positioned on two arc branch
The end of frame (12), there are two the clamping plates one (14), and two clamping plates one (14) are movably arranged on a left side for fixed ring (10) respectively
Right two sides, two clamping plates one (14) and fixed ring (10) junction are provided with pressure spring, the clamping plate two (15) two, two folders
Plate two (15) is movably arranged on the upper and lower ends on the inside of fixed ring (10) respectively, and there are two the adjusting rods (16), two adjustings
Bar (16) is threaded in the upper and lower ends of fixed ring (10) respectively, and two adjusting rods (16) connect with two clamping plates two (15) respectively
Touching, adjusting rod (16) is for pushing clamping plate two (15) mobile.
6. a kind of detection method of single borehole geologic radar orienting reflex imaging according to claim 4, which is characterized in that
Anti-skid rubber cushion is provided on the clamping plate one (14) and clamping plate two (15).
7. a kind of detection method of single borehole geologic radar orienting reflex imaging according to claim 1, which is characterized in that
The tripod (2) includes mounting disc (20), supporting leg (21), cone point (22), fixing seat (23), pulley (24), described
There are three supporting legs (21), and three supporting legs (21) are hinged on the mounting disc (20) lower end, three supporting legs (21) and installation
Disk (20) junction is provided with fastening bolt, and supporting leg (21) is stretching structure, is provided with adjusting stud, institute on supporting leg (21)
It states there are three cone point (22), three cone points (22) are separately positioned on the lower end of three supporting legs (21), the fixation
Seat (23) is arranged in mounting disc (20) upper end, and the pulley (24) is movably arranged on fixing seat (23).
8. a kind of detection method of borehole geologic radar orienting reflex imaging according to claim 6, which is characterized in that institute
State supporting leg (21) and cone point (22) junction be provided with fixed disk (25), be provided on the fixed disk (25) grab it is convex
Tooth (250).
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| CN201810755264.6A CN109031430B (en) | 2018-07-11 | 2018-07-11 | Detection method for directional reflection imaging of single-borehole geological radar |
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| CN109814098A (en) * | 2019-02-26 | 2019-05-28 | 广州市沙唯士电子科技有限公司 | A kind of single hole geological radar instrument with regulatory function for coal mine detection |
| CN111622700A (en) * | 2020-06-19 | 2020-09-04 | 中国电建集团华东勘测设计研究院有限公司 | Informatization drilling system and method suitable for advance prediction of unfavorable geological structural surface |
| CN112670714A (en) * | 2020-12-17 | 2021-04-16 | 山东大学 | Four-direction monopole directional antenna system and method for borehole radar detection |
| CN114910870A (en) * | 2022-07-14 | 2022-08-16 | 中铁十八局集团第四工程有限公司 | Geological radar for construction and use method |
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