CN104133254A - Electric and seismic comprehensive detection instrument for underground coal mine - Google Patents
Electric and seismic comprehensive detection instrument for underground coal mine Download PDFInfo
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- CN104133254A CN104133254A CN201410392117.9A CN201410392117A CN104133254A CN 104133254 A CN104133254 A CN 104133254A CN 201410392117 A CN201410392117 A CN 201410392117A CN 104133254 A CN104133254 A CN 104133254A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The invention relates to an electric and seismic comprehensive detection instrument for an underground coal mine. The electric and seismic comprehensive detection instrument has the function of the direct current electric method and the function of the shallow earthquake method. A detector collects electric method data and seismic data synchronously along a measuring line according to a certain polar distance, and then joint inversion is carried out on the collected electric method data and the collected seismic data. According to the electric and seismic comprehensive detection instrument, joint inversion is carried out on the collected electric method data and the collected seismic data, the apparent resistivity is worked out through the data of the current electric method according to the algorithm of the current electric method, depth conversion coefficients are corrected through a geologic body structure map, and the space resistivity change, in the measuring line direction, of a geologic body within a certain depth range is worked out; the shallow earthquake method is adopted for detecting the structure of the geologic body to overcome the shortcoming that the direct current electric method is insensitive to the structure, and topographical correction is carried out on the data according to the topography of an actual geologic body to achieve the effect that no blind point exists in a whole measurement area; the tomography algorithm is adopted for inversion, then a complete two-dimensional data body is formed, and the purpose of finding out mineral resources or solving various geological problems related to depth can be achieved.
Description
Technical field
The present invention relates to electric shock integrated detection instrument under a kind of mine geophysical exploration equipment, particularly a kind of coal mine.
Background technology
Electrical method is divided into AC electrical method and the large class of DC electrical method two, electrical survey (-ing) is that to take the conductivity difference of rock (ore deposit) stone in geologic body be material base, by the artificial earth current of setting up of observation and research or characteristic distributions and the Changing Pattern of electric field, find out subsurface geological structure and find underground electric characteristic abnormality body, to reach a class of looking for ore deposit and solving other geological problems (sliding mass, karst and goaf etc.), reconnoitre geophysical method, there is the advantages such as cost is low, work efficiency is high, and reflection ground is electric, geological information is abundant.
That electrical method mainly contains is sensitive to low-resistance water-filling shatter belt reflection, bulk effect is little, vertical lateral resolution advantages of higher, therefore there is larger using value.Be mainly used in the research of the aspects such as coalfield, ore exploration, structural mapping, oil gas field, underground water, tundra, Marine Geology, hydrological engineering geology and engineering detecting.Due to electrical method be take geologic body electrical property difference as basis, so insensitive to tectonic structures such as the tomography of geologic body, karst collapse col umn, thickness of coal seam.
Shallow earthquake method (hereinafter to be referred as seismic method) is the tectonic structures such as transmission, reflection, the frequency dispersion principle of application seismic wave, tomography that can accurately inverting geologic body, karst collapse col umn, thickness of coal seam.What detect due to seismic method is the seismic wave of geologic body, so whether water-filling is insensitive to geologic anomaly bodies such as coal mine gob, lava development area, tomography, shatter belts.
Summary of the invention
The object of the invention is to overcome above-mentioned defect, electric shock integrated detection instrument under a kind of coal mine is provided, it possesses DC electrical method and shallow earthquake method function, wave detector, by synchronously carrying out electrical method data and earthquake data acquisition by the device form of certain pole span along survey line, carries out joint inversion to gathered electrical method data and geological data.
The present invention is achieved in that electric shock integrated detection instrument under a kind of coal mine, comprises transmitter and receiver, it is characterized in that: transmitter comprises emission power, countdown circuit, emitting electrode; Emitting electrode is connected to the output terminal of countdown circuit, and emission power is powered to countdown circuit; Receiver comprises receiving electrode, vibrations wave detector, receiving signal reason circuit, ADC, reception power supply and data processing platform (DPP); The outer cover metal connecting rod of vibrations wave detector is as receiving electrode, receiving electrode is connected to receiving signal reason circuit input end, ADC input end is connected to signal conditioning circuit output terminal, ADC output terminal is connected to data processing applicator platform, receives power supply and manages circuit, ADC and data processing platform (DPP) power supply to receiving signal; Under described coal mine, electric shock integrated detection instrument first excites man-made explosion, when vibrations wave detector obtains seismic method data, countdown circuit is controlled emitting electrode to geologic body emitting voltage, set up underground stable DC electric field or pulsed electric field, the outer cover metal connecting rod of vibrations wave detector receives the data of DC electrical method simultaneously as receiving electrode, and manage and after circuit amplifies, deliver to ADC and do digital-to-analog conversion by receiving signal, then to data processing platform (DPP), do Inversion Calculation.
Under described coal mine, electric shock integrated detection instrument can be that independently Receiver And Transmitter utilizes communication cable association to form, and can be also that Receiver And Transmitter is integrated.
Described vibrations wave detector can adopt moving-coil type or MEMS wave detector, for receiving geological data.
The shell connecting rod of described vibrations wave detector adopts metal make and be connected with internal circuit, simultaneously as emitting electrode and and/or receiving electrode, during as emitting electrode, for to geologic body power supply, manually set up underground stable DC electric field; During as receiving electrode, along survey line pointwise, receive data.
Utilize electric shock integrated detection method under the coal mine that under described coal mine, electric shock integrated detection instrument carries out, comprise the following steps:
A) first electric shock integrated detection instrument under coal mine is switched to shallow earthquake method, by modes such as hammerings, excites man-made explosion, when vibrations wave detector obtains seismic method data; Emitting electrode, to geologic body emitting voltage, is manually set up underground stable DC electric field or pulsed electric field, and vibrations wave detector outer cover metal connecting rod receives the data of DC electrical method electrical method simultaneously as receiving electrode;
B) with the inverting of shallow earthquake analytic method, draw geologic body structural map;
C) by the data of DC electrical method, calculate geologic body apparent resistivity, with geologic body structural map, depth coefficient is proofreaied and correct, be finally inversed by the apparent resistivity isoline figure of different depth;
D) according to plastid topography and geomorphology practically, data are carried out to topographic correction, inverting becomes complete 2-D data body.
Conventional comprehensive survey method is with electric method meter or shallow layer seismograph, to carry out data acquisition respectively, and gathered electrical method data are carried out to electrical method tomographic inversion, and gathered geological data is shaken to method inverting, and independent one-tenth figure does exceptions area contrast and processes.And electric shock integrated detection instrument possesses DC electrical method and shallow earthquake method function under coal mine of the present invention simultaneously, wave detector synchronously carries out electrical method data and earthquake data acquisition by the device form of the pole span by setting along survey line, and gathered electrical method data and geological data are carried out to joint inversion.Have the following advantages:
1, be particularly suitable for surveying the geology harm early-warning and predictings such as coal mine gob, lava development area, tomography, shatter belt water-filling.
2, by the electrical method data to gathered and geological data, carry out joint inversion, utilize the data of DC electrical method to calculate apparent resistivity by the algorithm of DC electrical method, with geologic body structural map to time depth Conversion Coefficient proofread and correct, can calculate in a certain depth range geologic body along the space change in resistance of line direction.
3, utilize shallow earthquake method to survey the structure of geologic body, fill up DC electrical method to constructing insensitive flaw, according to plastid landform practically, data are carried out to topographic correction, can reach Quan Ce district without blind spot.
4, under described coal mine, electric shock integrated detection instrument can utilize the inverting of tomography algorithm, forms complete 2-D data body, finds out all kinds of geological problems that mineral resources or solution are relevant with the degree of depth.
Accompanying drawing explanation
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the structured flowchart of the transmitter of electric shock integrated detection instrument under coal mine of the present invention.
Fig. 2 is the structured flowchart of the receiver of electric shock integrated detection instrument under coal mine of the present invention.
Fig. 3 is the one-piece construction block diagram of electric shock integrated detection instrument under coal mine of the present invention.
Embodiment
Please refer to Fig. 1 and Fig. 2, be electric shock integrated detection instrument under a kind of coal mine of the present invention, comprise transmitter and receiver, transmitter comprises emission power, countdown circuit, emitting electrode; Emitting electrode is connected to the output terminal of countdown circuit, and emission power is powered to countdown circuit; Receiver comprises receiving electrode, vibrations wave detector, receiving signal reason circuit, ADC, reception power supply and data processing platform (DPP); The outer cover metal connecting rod of vibrations wave detector is as receiving electrode, receiving electrode is connected to receiving signal reason circuit input end, ADC input end is connected to signal conditioning circuit output terminal, ADC output terminal is connected to data processing applicator platform, receives power supply and manages circuit, ADC and data processing platform (DPP) power supply to receiving signal; Under described coal mine, electric shock integrated detection instrument first excites man-made explosion, when vibrations wave detector obtains seismic method data, countdown circuit is controlled emitting electrode to geologic body emitting voltage, set up underground stable DC electric field or pulsed electric field, the outer cover metal connecting rod of vibrations wave detector receives the data of DC electrical method simultaneously as receiving electrode, and manage and after circuit amplifies, deliver to ADC and do digital-to-analog conversion by receiving signal, then to data processing platform (DPP), do Inversion Calculation.
Under above-mentioned coal mine, electric shock integrated detection instrument can be that independently Receiver And Transmitter utilizes communication cable association to form, and can be also Receiver And Transmitter be integrated (as Fig. 3).
Described vibrations wave detector can moving-coil type, can be also MEMS, and wave detector is used for receiving geological data.Wave detector shell connecting rod is metal, is connected with internal circuit, can be simultaneously as emitting electrode and/or receiving electrode.Emitting electrode is powered to geologic body, manually sets up underground stable DC electric field.Receiving electrode receives data by the device form of predefined pole span along survey line pointwise; This vibrations wave detector is by synchronously carrying out electrical method data and earthquake data acquisition by the device form of predefined pole span along survey line, real-time.
Electric shock integrated detection method under coal mine of the present invention, comprises the following steps:
A) first electric shock integrated detection instrument under coal mine is switched to shallow earthquake method, by modes such as hammerings, excites man-made explosion, when vibrations wave detector obtains seismic method data; Emitting electrode, to geologic body emitting voltage, is manually set up underground stable DC electric field or pulsed electric field, and vibrations wave detector outer cover metal connecting rod receives the data of DC electrical method electrical method simultaneously as receiving electrode;
B) with the inverting of shallow earthquake analytic method, draw geologic body structural map;
C) by the data of DC electrical method, calculate geologic body apparent resistivity, with geologic body structural map, depth coefficient is proofreaied and correct, be finally inversed by the apparent resistivity isoline figure of different depth;
D) according to plastid topography and geomorphology practically, data are carried out to topographic correction, inverting becomes complete 2-D data body.
Detection method electric shock integrated under coal mine of the present invention carries out joint inversion by the electrical method data to gathered and geological data, the data of DC electrical method calculate apparent resistivity by the algorithm of DC electrical method, with geologic body structural map to time depth Conversion Coefficient proofread and correct, calculate in a certain depth range geologic body along the space change in resistance of line direction; Utilize shallow earthquake method to survey the structure of geologic body, fill up DC electrical method to constructing insensitive flaw, according to plastid landform practically, data are carried out to topographic correction, reach Quan Ce district without blind spot; Utilize the inverting of tomography algorithm, form complete 2-D data body, can find out all kinds of geological problems that mineral resources or solution are relevant with the degree of depth.
Claims (5)
1. an electric shock integrated detection instrument under coal mine, comprises transmitter and receiver, it is characterized in that: transmitter comprises emission power, countdown circuit, emitting electrode; Emitting electrode is connected to the output terminal of countdown circuit, and emission power is powered to countdown circuit; Receiver comprises receiving electrode, vibrations wave detector, receiving signal reason circuit, ADC, reception power supply and data processing platform (DPP); The outer cover metal connecting rod of vibrations wave detector is as receiving electrode, receiving electrode is connected to receiving signal reason circuit input end, ADC input end is connected to signal conditioning circuit output terminal, ADC output terminal is connected to data processing applicator platform, receives power supply and manages circuit, ADC and data processing platform (DPP) power supply to receiving signal; Under described coal mine, electric shock integrated detection instrument first excites man-made explosion, when vibrations wave detector obtains seismic method data, countdown circuit is controlled emitting electrode to geologic body emitting voltage, set up underground stable DC electric field or pulsed electric field, the outer cover metal connecting rod of vibrations wave detector receives the data of DC electrical method simultaneously as receiving electrode, and manage and after circuit amplifies, deliver to ADC and do digital-to-analog conversion by receiving signal, then to data processing platform (DPP), do Inversion Calculation.
2. electric shock integrated detection instrument under coal mine according to claim 1, it is characterized in that: under described coal mine, electric shock integrated detection instrument can be that independently Receiver And Transmitter utilizes communication cable association to form, can be also that Receiver And Transmitter is integrated.
3. electric shock integrated detection instrument under coal mine according to claim 1, is characterized in that: described vibrations wave detector can adopt moving-coil type or MEMS wave detector, for receiving geological data.
4. electric shock integrated detection instrument under coal mine according to claim 1, it is characterized in that: the shell connecting rod of described vibrations wave detector adopts metal make and be connected with internal circuit, simultaneously as transmitting electricity and/or utmost point receiving electrode, during as emitting electrode, for to geologic body power supply, manually set up underground stable DC electric field; During as receiving electrode, along survey line pointwise, receive data.
5. utilize an electric shock integrated detection method under the coal mine that under the coal mine described in claim 1, electric shock integrated detection instrument carries out, comprise the following steps:
A) first electric shock integrated detection instrument under coal mine is switched to shallow earthquake method, by modes such as hammerings, excites man-made explosion, when vibrations wave detector obtains seismic method data; Emitting electrode, to geologic body emitting voltage, is manually set up underground stable DC electric field or pulsed electric field, and vibrations wave detector outer cover metal connecting rod receives the data of DC electrical method electrical method simultaneously as receiving electrode;
B) with the inverting of shallow earthquake analytic method, draw geologic body structural map;
C) by the data of DC electrical method, calculate geologic body apparent resistivity, with geologic body structural map, depth coefficient is proofreaied and correct, be finally inversed by the apparent resistivity isoline figure of different depth;
D) according to plastid topography and geomorphology practically, data are carried out to topographic correction, inverting becomes complete 2-D data body.
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| CN111443396A (en) * | 2020-04-10 | 2020-07-24 | 兰州大学 | Detection device, system and detection method based on electrical method and seismic method |
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Application publication date: 20141105 |