CN113703046A - Underground full-space seismic wave hidden structure identification method and system - Google Patents
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Abstract
The invention belongs to the technical field of geophysical exploration, and particularly relates to a method and a system for identifying a hidden structure of underground full-space seismic waves, wherein an independent acquisition unit is adopted in the method and comprises a geophone, an acquisition card and a timer; the time-recorder is used for timing, the wave detector is used for collecting seismic wave data and associating with the collected time, and the acquisition card is used for storing the seismic wave data associated with the collected time; the method comprises the following steps: an initialization step, wherein a timer of the independent acquisition unit is synchronously timed on the ground; a point location setting step, namely respectively installing an independent acquisition unit at each detection point location after the detection point location is set on a surveying working surface according to a surveying plan; acquiring and acquiring, namely detecting seismic wave data of each detection point position through a detector of an independent acquisition unit and storing the seismic wave data in a corresponding acquisition card; and an analysis step, reading the seismic wave data to perform geological analysis. This application can effectual promotion survey efficiency.
Description
Technical Field
The invention belongs to the technical field of geophysical exploration, and particularly relates to a method and a system for identifying underground full-space seismic wave hidden structures.
Background
Blind formations refer to geological formations concealed by quaternary unconsolidated sediments or concealed beneath surface bedrock. In the process of coal mine roadway excavation and working face extraction, the hidden structure often influences normal production, and safety production accidents can be caused in serious cases. Therefore, it needs to be accurately identified.
In the existing ground coal mine surveying technology, three-dimensional seismic exploration is greatly influenced by terrain, an underground geophysical prospecting method is difficult to meet production requirements due to factors such as short detection distance and poor accuracy, and the underground trough wave seismic exploration technology gradually becomes an ideal geophysical prospecting means for coal mine geological structure detection by virtue of the advantages of convenience in construction, small influenced factors, high analysis accuracy and the like. During the tank wave survey, a wave detector array sensitive to vibration signals is usually embedded in a exploration working surface according to a certain track interval, the wave detectors are connected to each acquisition station through cables, each acquisition station is connected with 4 wave detectors, and the acquisition stations acquire tank wave seismic data of the wave detector array and store the seismic data in a memory of the acquisition station. Because the amplitude and arrival time of the channel wave need to be known when the survey data is inverted, the conventional instruments connect all the acquisition stations in a wired mode.
However, the underground coal mine is complex, the coal mine survey is carried out by using the mode, wiring work is very complex, time and labor are consumed, errors are easy to occur, various lines are wound together, and the survey efficiency is low.
Disclosure of Invention
The invention aims to provide a method for identifying the underground full-space seismic wave buried structure, which can effectively improve the survey efficiency.
The basic scheme provided by the invention is as follows:
the underground full-space seismic wave hidden structure identification method adopts an independent acquisition unit, wherein the independent acquisition unit comprises a geophone, an acquisition card and a timer; the time-recorder is used for timing, the wave detector is used for collecting seismic wave data and associating with the collected time, and the acquisition card is used for storing the seismic wave data associated with the collected time; the method comprises the following steps:
an initialization step, wherein a timer of the independent acquisition unit is synchronously timed on the ground;
a point location setting step, namely respectively installing an independent acquisition unit at each detection point location after the detection point location is set on a surveying working surface according to a surveying plan;
acquiring and acquiring, namely detecting seismic wave data of each detection point position through a detector of an independent acquisition unit and storing the seismic wave data in a corresponding acquisition card;
and an analysis step, reading the seismic wave data in the acquisition card of each independent acquisition unit, and carrying out geological analysis through the seismic wave data.
Basic scheme theory of operation and beneficial effect:
the method adopts an independent acquisition unit to acquire seismic wave data of detection points, and the independent acquisition unit comprises a timer for timing, a detector for acquiring the seismic wave data and associating with acquisition time, and an acquisition card for storing the seismic wave data associated with the acquisition time. Each independent acquisition unit can independently complete seismic wave data acquisition of a single acquisition detection point position. However, in the analysis, the seismic wave data of all the detection points need to be comprehensively processed and analyzed, that is, it is necessary to ensure that the time for acquiring the data of each detection point is synchronous.
Therefore, in the present application, the timer of the independent acquisition unit is synchronized on the ground, and then the independent acquisition unit is installed at each detection point. Therefore, the time synchronism of each geographic acquisition unit in data acquisition can be realized. And then, respectively acquiring seismic wave data of each detection point by using a detector of the seismic acquisition system and storing the seismic wave data in a corresponding acquisition card. And then, taking out the independent acquisition units, and respectively reading the seismic wave data stored in each acquisition card. Because the seismic wave data have time synchronism, geological analysis can be accurately carried out.
Compared with the prior art that the detector is connected to the acquisition station through the cable, the synchronous timing method and the synchronous timing device are only needed to be used for synchronously timing the detector on the ground before the independent acquisition unit is installed. The device does not need networking and wiring, does not need worrying about line connection errors and winding the lines together, saves a large amount of time and energy when workers carry out survey, and is more convenient to store and transport.
In conclusion, the survey efficiency can be effectively improved.
Further, in the initialization step, a timer of the independent acquisition unit performs synchronous timing in a GPS time service mode.
Has the advantages that: not only convenient operation to the precision of GPS time service is very high, satisfies the demand of this scheme, except that, GSP time service technology is ripe, and the stability of operating is also very good.
Further, the method comprises an energy analysis step, wherein the energy attenuation rule of the seismic waves when encountering the abnormal structural body is analyzed based on historical acquisition data to obtain an abnormal attenuation table;
in the analysis step, when geological analysis is carried out, a seismic wave energy attenuation map is obtained based on a propagation path of seismic waves according to seismic wave data, and CT tomography is carried out by combining an abnormal attenuation table.
Has the advantages that: in this way, when the collected data is analyzed, the distribution of the abnormal structural bodies and the types of the abnormal structural bodies at various positions can be directly known. And the targeted protection measures are convenient to carry out.
Further, in the energy analysis step, the abnormal structure comprises a fault, a collapse column and a coal rock gangue inclusion region.
Has the advantages that: an abnormal attenuation table obtained by analyzing historical data of the abnormal structures is enough to carry out CT tomography on the conventional coal mine.
Furthermore, the independent acquisition unit also comprises a microprocessor, a photosensitive sensor and an alarm emitter; the microprocessor is respectively electrically connected with the acquisition card, the light sensor and the alarm emitter; the microprocessor is used for controlling the alarm emitter to give an alarm within a preset time after the acquisition card receives the seismic wave data and controlling the alarm emitter to give an alarm when the feedback result of the photosensitive sensor is continuous no light;
the method also comprises a device taking-out step, wherein the independent acquisition units are taken out, and if all the independent units are not taken out, the independent acquisition units which are not taken out are taken out according to an alarm.
Has the advantages that: when seismic wave acquisition is carried out, the geographic acquisition unit needs to be buried under the ground of an acquisition point. Due to the fact that the underground situation is complex, even if the acquisition points are marked, sometimes the situation that all independent acquisition units are not taken out after data acquisition is finished still occurs, and then subsequent seismic wave data analysis is influenced. The staff need go down to the well again and take out the independent collection unit that does not take out, waste time and energy and inefficiency.
By using the scheme, the underground light sensor can continuously feed back no light, if the independent acquisition unit is taken out and is not completely taken out, the photosensitive sensor of the underground independent acquisition unit can continuously feed back no light to the microprocessor within the preset time when the detector receives the data, and the microprocessor can control the alarm transmitter to send out an alarm. Through the alarm, the staff can know that the independent acquisition unit is not completely taken out, so that the situation that the independent acquisition unit is not completely taken out and needs to be taken out underground again is avoided.
Further, the alarm transmitter sends an alarm by means of a wireless signal; the alarm receiving device is used for receiving the wireless signal of the alarm transmitter.
Due to the effects: since the independent collecting unit is buried underground, the effect of giving an alarm by means of sound or light is not obvious. In this scheme, the alarm transmitter sends the alarm through wireless signal (like bluetooth), and the staff only need carry the alarm receiving arrangement who is equipped with corresponding wireless receiving module (like bluetooth module), just can guarantee when independent acquisition unit is not in time taken out, the information of learning that can understand.
Furthermore, each independent acquisition unit has its own number; the alarm receiving device is also used for displaying the number corresponding to the independent acquisition unit when receiving the wireless signal of the alarm transmitter.
Has the advantages that: when the independent acquisition units are not taken out completely, the working personnel can not only know the condition in time, but also know which independent acquisition unit/independent acquisition units are not taken out, and the efficiency is higher when the independent acquisition units are taken out subsequently.
The invention also provides a system for identifying the underground full-space seismic wave hidden structure, which is applied to the method for identifying the underground full-space seismic wave hidden structure and comprises an independent acquisition unit and a background end;
the independent acquisition unit comprises a detector, an acquisition card and a timer; the time-recorder is used for timing, the wave detector is used for collecting seismic wave data and associating with the collected time, and the acquisition card is used for storing the seismic wave data associated with the collected time;
the background end comprises a reading module, a storage module and an analysis module; the reading module is used for reading seismic wave data in the acquisition card; the storage unit is used for storing the read seismic wave data; the analysis unit is used for carrying out geological analysis according to the seismic wave data.
Has the advantages that: compared with the prior art that the detector is connected to the acquisition station through the cable, the synchronous timing method and the synchronous timing device are only needed to be used for synchronously timing the detector on the ground before the independent acquisition unit is installed. The device does not need networking and wiring, does not need worrying about line connection errors and winding the lines together, saves a large amount of time and energy when workers carry out survey, and is more convenient to store and transport.
In conclusion, the survey efficiency can be effectively improved.
Further, an abnormal attenuation table obtained by analyzing the energy attenuation rule when the seismic waves encounter the abnormal structure based on the historical acquisition data is stored in the storage module; when the analysis unit carries out geological analysis, a seismic wave energy attenuation map is obtained based on the propagation path of seismic waves according to seismic wave data, and CT tomography is carried out by combining an abnormal attenuation table.
Has the advantages that: when the collected data are analyzed, the distribution condition of the abnormal structural bodies and the types of the abnormal structural bodies at each position can be directly known. And the targeted protection measures are convenient to carry out.
Furthermore, the independent acquisition unit also comprises a microprocessor, a photosensitive sensor and an alarm emitter; the microprocessor is respectively electrically connected with the acquisition card, the light sensor and the alarm emitter; the microprocessor is used for controlling the alarm emitter to give an alarm within a preset time after the acquisition card receives the seismic wave data and controlling the alarm emitter to give an alarm when the feedback result of the photosensitive sensor is continuous no light;
wherein the alarm transmitter sends an alarm by means of a wireless signal; the alarm receiving device is used for receiving the wireless signal of the alarm transmitter.
Has the advantages that: by using the scheme, the underground light sensor can continuously feed back no light, if the independent acquisition unit is taken out and is not completely taken out, the photosensitive sensor of the underground independent acquisition unit can continuously feed back no light to the microprocessor within the preset time when the detector receives the data, and the microprocessor can control the alarm transmitter to send out an alarm. Through alarm information, the staff can know that the independent acquisition unit is not completely taken out, and the situation that the independent acquisition unit is not completely taken out and needs to be taken out underground again is avoided. And, the alarm transmitter of this scheme sends the alarm through the mode of radio signal (like the bluetooth), and the staff only need carry the alarm receiving arrangement who is equipped with bluetooth module, just can guarantee when independent acquisition unit is not in time taken out, the information of learning that can understand.
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FIG. 1 is a flow chart of a first embodiment of the present invention;
fig. 2 is a logic block diagram of a first embodiment of the invention.
Detailed Description
The following is further detailed by the specific embodiments:
example one
As shown in fig. 1, the underground full-space seismic wave hidden structure identification method adopts an independent acquisition unit, wherein the independent acquisition unit comprises a geophone, an acquisition card and a timer; the time-recorder is used for timing, the wave detector is used for collecting seismic wave data and correlating with the collected time, and the collecting card is used for storing the seismic wave data correlated with the collected time. The detector and the acquisition card can be directly made of the existing product, and the timer can be a timer capable of GPS time service.
The method comprises the following steps:
and an energy analysis step, namely analyzing the energy attenuation rule when the seismic waves encounter the abnormal structure based on the historical acquisition data to obtain an abnormal attenuation table. The abnormal structure comprises a fault, a collapse column and a coal rock gangue inclusion area. An abnormal attenuation table obtained by analyzing historical data of the abnormal structures is enough to carry out CT tomography on the conventional coal mine.
And an initialization step, namely synchronously timing the timer of the independent acquisition unit on the ground. In this embodiment, the timer performs synchronous timing in a GPS time service manner. Therefore, the GPS time service system is convenient to operate, the GPS time service precision is very high, the requirement of the scheme is met, and besides, the GSP time service technology is mature, and the stability of operation is very good.
And a point location setting step, namely respectively installing the independent acquisition units at the detection points after the detection points are set on the surveying working face according to the surveying plan. The number and location of the detection points can be specifically set by those skilled in the art depending on the particular circumstances of the mine under investigation.
And an acquisition step, namely detecting the seismic wave data of each detection point position through a detector of the independent acquisition unit and storing the seismic wave data in a corresponding acquisition card.
And an analysis step, reading the seismic wave data in the acquisition card of each independent acquisition unit, and carrying out geological analysis through the seismic wave data. Specifically, during geological analysis, after a seismic wave energy attenuation map is obtained based on a propagation path of seismic waves according to seismic wave data, CT tomography is performed by combining an abnormal attenuation table.
As shown in fig. 2, the invention further provides a system for identifying the underground full-space seismic wave hidden structure, which is applied to the method for identifying the underground full-space seismic wave hidden structure, and comprises an independent acquisition unit and a back stage end. In this embodiment, the back end is an industrial PC.
The independent acquisition unit comprises a detector, an acquisition card and a timer; the time-recorder is used for timing, the wave detector is used for collecting seismic wave data and correlating with the collected time, and the collecting card is used for storing the seismic wave data correlated with the collected time.
The background end comprises a reading module, a storage module and an analysis module; the reading module is used for reading seismic wave data in the acquisition card; the storage unit is used for storing the read seismic wave data; the analysis unit is used for carrying out geological analysis according to the seismic wave data.
The storage module is also internally stored with an abnormal attenuation table obtained by analyzing the energy attenuation rule when seismic waves encounter abnormal structures based on historical acquisition data; when the analysis unit carries out geological analysis, a seismic wave energy attenuation map is obtained based on the propagation path of seismic waves according to seismic wave data, and CT tomography is carried out by combining an abnormal attenuation table.
The specific implementation process is as follows:
the method adopts an independent acquisition unit to acquire seismic wave data of detection points, and the independent acquisition unit comprises a timer for timing, a detector for acquiring the seismic wave data and associating with acquisition time, and an acquisition card for storing the seismic wave data associated with the acquisition time. Each independent acquisition unit can independently complete seismic wave data acquisition of a single acquisition detection point position. However, in the analysis, the seismic wave data of all the detection points need to be comprehensively processed and analyzed, that is, it is necessary to ensure that the time for acquiring the data of each detection point is synchronous.
Therefore, in the present application, the timer of the independent acquisition unit is synchronized on the ground, and then the independent acquisition unit is installed at each detection point. Therefore, the time synchronism of each geographic acquisition unit in data acquisition can be realized. And then, respectively acquiring seismic wave data of each detection point by using a detector of the seismic acquisition system and storing the seismic wave data in a corresponding acquisition card. And then, taking out the independent acquisition units, and respectively reading the seismic wave data stored in each acquisition card. Because the seismic wave data have time synchronism, geological analysis can be accurately carried out.
Compared with the prior art that the detector is connected to the acquisition station through the cable, the synchronous timing method and the synchronous timing device are only needed to be used for synchronously timing the detector on the ground before the independent acquisition unit is installed. The device does not need networking and wiring, does not need worrying about line connection errors and winding the lines together, saves a large amount of time and energy when workers carry out survey, and is more convenient to store and transport.
In addition, when the scheme is used for analyzing and imaging, a seismic wave energy attenuation map is obtained based on the propagation path of the seismic wave, and then CT tomography is carried out by combining an abnormal attenuation table. The worker can directly know the distribution of the abnormal structural bodies and the types of the abnormal structural bodies at each place. And the targeted protection measures are convenient to carry out.
In conclusion, the survey efficiency can be effectively improved.
Example two
Different from the first embodiment, the independent acquisition unit in the present embodiment further includes a microprocessor, a photosensitive sensor and an alarm transmitter; the microprocessor is respectively electrically connected with the acquisition card, the light sensor and the alarm emitter; and the microprocessor is used for controlling the alarm emitter to give an alarm when the feedback result of the photosensitive sensor is continuous no light within a preset time after the acquisition card receives the seismic wave data.
The microprocessor can be a single chip microcomputer, and the alarm emitter sends an alarm in a wireless signal mode; the alarm receiving device is used for receiving the wireless signal of the alarm transmitter. In this embodiment, the alarm transmitting unit transmits the alarm through bluetooth, and the alarm receiving device is a device loaded with a bluetooth module. Each independent acquisition unit has its own number; the alarm receiving device is also used for displaying the number corresponding to the independent acquisition unit when receiving the wireless signal of the alarm transmitter.
The method in this embodiment further includes a device extraction step of extracting the independent acquisition units, and if all the independent units are not extracted, extracting the independent acquisition units that are not extracted according to an alarm.
The specific implementation process is as follows:
when seismic wave acquisition is carried out, the geographic acquisition unit needs to be buried under the ground of an acquisition point. Due to the fact that the underground situation is complex, even if the acquisition points are marked, sometimes the situation that all independent acquisition units are not taken out after data acquisition is finished still occurs, and then subsequent seismic wave data analysis is influenced. The staff need go down to the well again and take out the independent collection unit that does not take out, waste time and energy and inefficiency.
By using the scheme, the underground light sensor can continuously feed back no light, if the independent acquisition unit is taken out and is not completely taken out, the photosensitive sensor of the underground independent acquisition unit can continuously feed back no light to the microprocessor within the preset time when the detector receives the data, and the microprocessor can control the alarm transmitter to send out an alarm. Through the alarm, the staff can know that the independent acquisition unit is not completely taken out, so that the situation that the independent acquisition unit is not completely taken out and needs to be taken out underground again is avoided.
It should be noted that, because the independent collecting unit is buried underground, the effect of giving an alarm by sound or light is not obvious. In this scheme, the alarm transmitter sends the alarm through wireless signal's mode, and the staff only need carry the alarm receiving arrangement who is equipped with bluetooth module, just can guarantee when independent acquisition unit is not in time taken out, the information of learning that can understand. Moreover, each independent acquisition unit has a number; when the alarm receiving device receives the wireless signal of the alarm transmitter, the number corresponding to the independent acquisition unit is also displayed. When the independent acquisition units are not taken out completely, the working personnel can not only know the condition in time, but also know which independent acquisition unit/independent acquisition units are not taken out, and the efficiency is higher when the independent acquisition units are taken out subsequently.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. The underground full-space seismic wave hidden structure identification method is characterized by comprising the following steps of: an independent acquisition unit is adopted and comprises a detector, an acquisition card and a timer; the time-recorder is used for timing, the wave detector is used for collecting seismic wave data and associating with the collected time, and the acquisition card is used for storing the seismic wave data associated with the collected time; the method comprises the following steps:
an initialization step, wherein a timer of the independent acquisition unit is synchronously timed on the ground;
a point location setting step, namely respectively installing an independent acquisition unit at each detection point location after the detection point location is set on a surveying working surface according to a surveying plan;
acquiring and acquiring, namely detecting seismic wave data of each detection point position through a detector of an independent acquisition unit and storing the seismic wave data in a corresponding acquisition card;
and an analysis step, reading the seismic wave data in the acquisition card of each independent acquisition unit, and carrying out geological analysis through the seismic wave data.
2. The method for identifying the blind structure of the underground full-space seismic waves according to claim 1, wherein the method comprises the following steps: in the initialization step, a timer of the independent acquisition unit performs synchronous timing in a GPS time service mode.
3. The method for identifying the blind structure of the underground full-space seismic waves according to claim 1, wherein the method comprises the following steps: the method also comprises an energy analysis step, wherein based on historical acquisition data, the energy attenuation rule of the seismic waves when encountering the abnormal structural body is analyzed to obtain an abnormal attenuation table;
in the analysis step, when geological analysis is carried out, a seismic wave energy attenuation map is obtained based on a propagation path of seismic waves according to seismic wave data, and CT tomography is carried out by combining an abnormal attenuation table.
4. The method for identifying a downhole total-space seismic wave blind structure according to claim 3, wherein: in the energy analysis step, the abnormal structure comprises a fault, a collapse column and a coal rock gangue inclusion region.
5. The method for identifying the blind structure of the underground full-space seismic waves according to claim 1, wherein the method comprises the following steps: the independent acquisition unit also comprises a microprocessor, a photosensitive sensor and an alarm emitter; the microprocessor is respectively electrically connected with the acquisition card, the light sensor and the alarm emitter; the microprocessor is used for controlling the alarm emitter to give an alarm within a preset time after the acquisition card receives the seismic wave data and controlling the alarm emitter to give an alarm when the feedback result of the photosensitive sensor is continuous no light;
the method also comprises a device taking-out step, wherein the independent acquisition units are taken out, and if all the independent units are not taken out, the independent acquisition units which are not taken out are taken out according to an alarm.
6. The method for identifying the blind structure of the underground full-space seismic waves according to claim 5, wherein the method comprises the following steps: the alarm transmitter sends an alarm by means of a wireless signal; the alarm receiving device is used for receiving the wireless signal of the alarm transmitter.
7. The method for identifying a downhole total-space seismic wave blind structure according to claim 6, wherein: each independent acquisition unit has its own number; the alarm receiving device is also used for displaying the number corresponding to the independent acquisition unit when receiving the wireless signal of the alarm transmitter.
8. Full space seismic wave invisibility structure identification system in pit, its characterized in that: the underground full-space seismic wave hidden structure identification method comprises an independent acquisition unit and a background end;
the independent acquisition unit comprises a detector, an acquisition card and a timer; the time-recorder is used for timing, the wave detector is used for collecting seismic wave data and associating with the collected time, and the acquisition card is used for storing the seismic wave data associated with the collected time;
the background end comprises a reading module, a storage module and an analysis module; the reading module is used for reading seismic wave data in the acquisition card; the storage unit is used for storing the read seismic wave data; the analysis unit is used for carrying out geological analysis according to the seismic wave data.
9. The downhole total spatial seismic waveform blind formation identification system of claim 8, wherein: an abnormal attenuation table obtained by analyzing the energy attenuation rule when the seismic waves encounter the abnormal structure based on historical acquisition data is also stored in the storage module; when the analysis unit carries out geological analysis, a seismic wave energy attenuation map is obtained based on the propagation path of seismic waves according to seismic wave data, and CT tomography is carried out by combining an abnormal attenuation table.
10. The downhole total spatial seismic waveform blind formation identification system of claim 8, wherein: the independent acquisition unit also comprises a microprocessor, a photosensitive sensor and an alarm emitter; the microprocessor is respectively electrically connected with the acquisition card, the light sensor and the alarm emitter; the microprocessor is used for controlling the alarm emitter to give an alarm within a preset time after the acquisition card receives the seismic wave data and controlling the alarm emitter to give an alarm when the feedback result of the photosensitive sensor is continuous no light;
wherein the alarm transmitter sends an alarm by means of a wireless signal; the alarm receiving device is used for receiving the wireless signal of the alarm transmitter.
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