CN110045414A - A kind of detection method of Deep Mining metallic ore - Google Patents
A kind of detection method of Deep Mining metallic ore Download PDFInfo
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- CN110045414A CN110045414A CN201910358907.8A CN201910358907A CN110045414A CN 110045414 A CN110045414 A CN 110045414A CN 201910358907 A CN201910358907 A CN 201910358907A CN 110045414 A CN110045414 A CN 110045414A
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- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 238000005065 mining Methods 0.000 claims abstract description 25
- 238000004880 explosion Methods 0.000 claims abstract description 10
- 238000012545 processing Methods 0.000 claims abstract description 8
- 238000005422 blasting Methods 0.000 claims abstract description 7
- 238000004458 analytical method Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 13
- 238000003384 imaging method Methods 0.000 claims description 6
- 238000013508 migration Methods 0.000 claims description 4
- 230000005012 migration Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 2
- 238000004078 waterproofing Methods 0.000 claims description 2
- 238000013213 extrapolation Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000006854 communication Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/20—Arrangements of receiving elements, e.g. geophone pattern
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/24—Recording seismic data
- G01V1/247—Digital recording of seismic data, e.g. in acquisition units or nodes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
- G01V1/36—Effecting static or dynamic corrections on records, e.g. correcting spread; Correlating seismic signals; Eliminating effects of unwanted energy
- G01V1/362—Effecting static or dynamic corrections; Stacking
Landscapes
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention belongs to underground metalliferous mine detection technology fields, more particularly to a kind of detection method of Deep Mining metallic ore, according to the hypocentral location of Area Mining explosion, blast signal, which is laid, in earth's surface receives system, receive and save seismic signal and noise that the mining blasting in certain time generates, computer for analysis processing is sent data to after reception, and analyzes the distribution situation of Deep Mining metallic ore accordingly.Using mining blasting signal detection deep metallic ore, i.e., using mining area underground mining explosion as focus, it is not necessarily to artificially generated focus, greatly reduces cost, and field work is convenient, seismic array is provided simultaneously with the advantages of active source is explored with passive source.
Description
Technical field
The invention belongs to underground metalliferous mine detection technology fields, and in particular to a kind of detection method of Deep Mining metallic ore
Background technique
Reflection shooting has exploration relative to geophysical methods such as electromagnetic method, induced polarization method and gravimetric prospectings
The advantages that depth is deeper, and precision is relatively high and resolution ratio is higher.But compared with the energy exploratioies such as oil gas, involved by ore exploration
And the geological problem that solves of seismic geological codition and needs it is more complicated, often seismic wave can dissipate in communication process
It penetrates, and non-reflective signal.This is because distribution of the metallic ore in underground is sufficiently complex, vein is mostly skewed, and applies reflection
The premise of earthquake all assumes that underground medium is flat bedded, therefore reflection seismic is ineffective for ore exploration.This
Outside, reflection shooting needs artificially generated focus, generally uses in regions with complex terrain in surface drilling explosive conduct
Focus, costly, destructive power is big, and field work is complicated.
Summary of the invention
In order to solve the above-mentioned technical problem, the present invention proposes a kind of detection method of Deep Mining metallic ore, utilizes mining
Blast signal detects deep metallic ore, i.e., using mining area underground mining explosion as focus, is not necessarily to artificially generated focus, drops significantly
Low cost, and field work is convenient, seismic array are provided simultaneously with active source and the advantages of passive source are explored.
The present invention be in this way realize, a kind of detection method of Deep Mining metallic ore, according to Area Mining explosion
Hypocentral location lays blast signal in earth's surface and receives system, receives and saves the earthquake that the mining blasting in certain time generates
Signal and noise send data to computer for analysis processing after reception, and analyze the distribution of Deep Mining metallic ore accordingly
Situation.
Further, before laying blast signal reception system, according to the exploitation situation in mining area, the depth of part has been verified
Degree, form and the geological information of test block, analyze trend and the position of ore body.
Further, it is the short cycle station that the blasting seismic waves, which receive system, and distribution method is as follows:
The distance and station number between the station are determined according to hypocentral location, whether test equipment works normally, selected
Position at touch instrument switch, wait after instrument normally receives satellite-signal, indicator light lights, by instrument point after the completion of debugging
It is not embedded at the 10-15mm of underground, surface covers a thin layer surface dust, and instrument directly receives satellite-signal, is not necessarily to artificial clock synchronization, waits
Underground mining focus explosion, instrument receives the seismic signal that explosion generates, and saves.
Unlike the intensive array installation method of previous short cycle, observation system of the invention is set as a survey without cloth
Net, but intensive laying in a certain range, to receive blast signal and noise.
Further, before the station is embedded in earth's surface, waterproofing protection measure is done to instrument.
Further, the time that the station receives signal is generally 7-30 days.
Further, the analysis and processing method of data utilizes making an uproar for the short cycle station being collected into using the method for offset
Sound data carry out noise imaging, obtain velocity structure, to establish underground medium model, forward modeling obtains wave field snapshot, and record is simultaneously
Storage, then stores the wave field information of each time step, then utilizes into according to earthquake record along time shaft back-extrapolate wave field
Slice part carries out imaging operation, completes migration processing using migrated section and clearly portrays the distribution situation of deep metallic ore.
The method of so-called offset, i.e., when recording Diffraction Point corresponding image-forming condition during propagating the elastic wave inverse time
The wave field value at quarter stacks up the migration result of a Diffraction Point, so that it may obtain the migrated section of entire model.Offset uses
The case where wave equation is realized, limits without inclination angle, adapt to space velocity acute variation.Deviating main step includes obtaining
Wave field snapshot and image-forming condition.
Compared with the prior art, the advantages of the present invention are as follows:
(1) present invention with conventional reflection seismic exploration compared with, be not necessarily to man-made explosion, reduce costs, save manpower and
Material resources, the mining blasting in mining area are a kind of necessary means of Area Mining, are the focus of this invention by blast signal, are one
Two are lifted to obtain；
(2) the intensive array of short cycle is laid as seismic signal in earth's surface receive system, it is easy to operate, not by landform
Control is not necessarily to artificial clock synchronization, lays and completes constantly receive data, greatly reduces field work difficulty in this way；
(3) hypocentral location of the invention is in the pit of mining area exploitation, and the propagation path of seismic wave is short, and energy attenuation is small,
Upgoing wave and down going wave can be recorded simultaneously, and exploration effects are more preferably；
(4) present invention is compared with reflection seismic, without multi-fold observation system, without extracting common midpoint gather
Deng processing, using offset method, underground medium model is portrayed using noise imaging in addition, signal-to-noise ratio is higher, obtains geological model
It is more accurate and reliable.
Detailed description of the invention
Fig. 1 is certain the 52nd row illustraton of model of two mining area of metallic ore；
Fig. 2 is certain the 52nd row lighting result figure of two mining area of metallic ore；
Fig. 3 is synthetic seismic record 0.16s (a), 0.21s (b), 0.26s (c), 0.31s (d), 0.36s (e), 0.41s
(f) the wave field snapshot at moment；
Fig. 4 is synthetic seismogram.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, and
It is not used in the restriction present invention.
The present invention be directed to a kind of detection methods for new Deep Mining metallic ore that the exploration of metallic ore proposes.Existing skill
With distribution method of the invention there is difference, reflection shooting need to be mentioned for the laying of reflection shooting observation system in art
Preceding determining hypocentral location and the position of wave detector, survey line must be straight lines, and should be perpendicular to the trend of construction.Reflection shooting
The observation system that multi-fold need to be used, needs to be varied multiple times the position of excitation point and receiving point, field work is sufficiently complex.And
The present invention receives system using the intensive array seismic signal of short cycle, and the laying of the field station is by theoretical experimental study,
It determines position, without that must be straight line, not be controlled by landform.The accurate location of focus by obtained time curve after experiment come
It determines, and without repeatedly observation, the station begins to receive signal after the completion of laying, and artificial clock synchronization is not necessarily to, by global position system
Accurate clock synchronization.Compared with reflection seismic, reflection seismic focus need to be reflected back ground again after underground medium in earth's surface, back wave
Table, for focus of the invention closer to exploration targets, seismic propagation path is short, and energy attenuation is few, and exploration effects are more preferable.
Embodiment 1,
By taking certain Copper-nickel Deposits as an example, the geological information being collected into using early period, in conjunction with the practical exploitation in the mining area recognized and
Detection event devises the 52nd row geological model sectional view of two mining areas, with reference to Fig. 1, and to model carry out assignment, including lithology,
The density of speed and various lithology that elastic wave is propagated in the medium, reference table 1.Seismic signal receives system and uses short cycle
The intensive array, design as follows: using earth's surface as x-axis, vertical earth's surface is y-axis and depth axis downwards, in the pit in two mining areas, away from ground
870 meters of table, away from 540 meters of y-axis, and focus is laid at (540,870) m of model, at a distance of 12 between the earth's surface laying station, the station
Rice, has laid 161 stations altogether.With reference to Fig. 2, using seismic illumination technology, seismic forward simulation is carried out to the model, is obtained
Synthetic seismic record intercepts the wave field at this six moment of 0.16s, 0.21s, 0.26s, 0.31s, 0.36s, 0.41s with reference to Fig. 3
Snapshot is analyzed, with reference to Fig. 4, it was therefore concluded that: analyzed from the wave field snapshot at six moment and synthetic seismogram it can be seen that
A is direct wave, and b is transmitted wave, and c is the back wave in 1 face, and d is the back wave in 3 faces, and f is the transmitted wave in 3 faces, and e is the reflection in 4 faces
Wave.It by the way that obtained result is handled and analyzed, is compared with practical explored part, conclusion and actual conditions are kissed
It is right higher.It is tested by theory, the form of deep metallic ore ore body can be portrayed well, terminated in actual field work
Afterwards, according to above-mentioned processing method, acquisition wave field snapshot first carries out migration imaging processing referring to Fig. 4, synthesizes in conjunction with earthquake
Record, comprehensive analysis is simultaneously explained, the distribution situation of underground deep metallic ore is finally obtained.
Table 1
Claims (6)
1. a kind of detection method of Deep Mining metallic ore, which is characterized in that according to the hypocentral location of Area Mining explosion, on ground
Table lays blast signal and receives system, receives and saves seismic signal and noise that the mining blasting in certain time generates, connects
Computer for analysis processing is sent data to after receipts, and analyzes the distribution situation of Deep Mining metallic ore accordingly.
2. the detection method of Deep Mining metallic ore described in accordance with the claim 1, which is characterized in that connect laying blast signal
Before receipts system, according to the exploitation situation in mining area, the depth for having verified part, form and the geological information of test block, ore body is analyzed
Trend and position.
3. the detection method of Deep Mining metallic ore described in accordance with the claim 1, which is characterized in that the blasting seismic waves
Reception system is the short cycle station, and distribution method is as follows:
The distance and station number between the station are determined according to hypocentral location, whether test equipment works normally, in selected position
It sets place and touches instrument switch, after waiting instrument to normally receive satellite-signal, indicator light is lighted, and buries instrument respectively after the completion of debugging
At the 10-15mm of underground, surface covers a thin layer surface dust, and instrument directly receives satellite-signal, is not necessarily to artificial clock synchronization, waits underground
Mining focus explosion, instrument receives the seismic signal that explosion generates, and saves.
4. the detection method of Deep Mining metallic ore described in accordance with the claim 3, which is characterized in that the station is being embedded in earth's surface
Before, waterproofing protection measure is done to instrument.
5. the detection method of Deep Mining metallic ore described in accordance with the claim 3, which is characterized in that the analysis processing side of data
Method is carried out noise imaging, obtains velocity structure using the method for offset using the noise data for the short cycle station being collected into,
To establish underground medium model, forward modeling obtains wave field snapshot, records and stores, then reversed along time shaft according to earthquake record
Extrapolation wave field, stores the wave field information of each time step, then carries out imaging operation using image-forming condition, completes migration processing,
Using migrated section, the distribution situation of deep metallic ore is clearly portrayed.
6. the detection method of Deep Mining metallic ore described in accordance with the claim 1, which is characterized in that the station receive signal when
Between generally 7-30 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910358907.8A CN110045414B (en) | 2019-04-30 | 2019-04-30 | Method for detecting deep metal ore in mining area |
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| CN201910358907.8A CN110045414B (en) | 2019-04-30 | 2019-04-30 | Method for detecting deep metal ore in mining area |
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| CN110045414B CN110045414B (en) | 2021-03-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113156513A (en) * | 2021-04-14 | 2021-07-23 | 吉林大学 | Convolutional neural network seismic signal denoising method based on attention guidance |
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| US5511038A (en) * | 1993-02-05 | 1996-04-23 | Agip S.P.A. | Process and device for detecting seismic signals in order to obtain vertical seismic profiles during bore drilling operations |
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2019
- 2019-04-30 CN CN201910358907.8A patent/CN110045414B/en active Active
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113156513A (en) * | 2021-04-14 | 2021-07-23 | 吉林大学 | Convolutional neural network seismic signal denoising method based on attention guidance |
| CN113156513B (en) * | 2021-04-14 | 2024-01-30 | 吉林大学 | Convolutional neural network seismic signal denoising method based on attention guidance |
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