CN207408602U - A kind of shale gas develops microseism pressure break intelligent identification device - Google Patents
A kind of shale gas develops microseism pressure break intelligent identification device Download PDFInfo
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Abstract
The utility model discloses a kind of shale gas exploitation microseism pressure break intelligent identification device, and described device includes：Power supply, signal processing apparatus, three-component geophone；The three-component geophone is installed on micro-seismic monitoring underground；The signal processing apparatus, the power supply are mounted on the ground of micro-seismic monitoring well correspondence position；The power supply is connected with the signal processing apparatus；The signal processing apparatus is connected with the three-component geophone, the three-component geophone is used to capture the small seismic event waveform data of fracturing activities generation, and the signal processing apparatus is used to receive the small seismic event waveform data analog signal that the three-component geophone captures and the small seismic event waveform data analog signal is handled；The signal processing apparatus is connected with the monitoring center, and the monitoring center is used to receive the data-signal that the signal processing apparatus is sent.Height, length and the azimuth information that crack is generated in shale gas hydraulic fracturing process are gathered using the present apparatus, improves recovery ratio.
Description
Technical field
The utility model is related to shale gas survey and exploitation fields, and microseism pressure break intelligence is developed more particularly to a kind of shale gas
It can identification device.
Background technology
In shale gas exploitation, man-made fracture is generally generated using hydraulic fracturing, to improve in hyposmosis, compact reservoir
The production efficiency of oil gas.The assessment of fracturing effect is come generally by micro-seismic event caused by hydraulic fracturing is captured
It realizes, because this earthquake generated is very faint, therefore is referred to as " microseism ".At present, for hydraulic fracturing monitoring
Conventional method mainly includes indirect method, direct near wellbore zone technology and direct far-field zone technology, such method and is supervising
All there is the limitation of itself in terms of length, height, width, orientation and the inclination angle of surveying fracturing fracture.Fine pressure analysis method exists
Reservoir modeling and the limitation not being inconsistent actually have insincere property in terms of the orientation and inclination angle in monitoring crack；Well test analysis side
Method requires accurate permeability and pressure, has inaccuracy in terms of the height, orientation and inclination angle in monitoring crack；Radioactivity is shown
Track method is only capable of detection near wellbore, has inaccuracy in terms of the length in monitoring crack；Temperature logging method is vulnerable to rock stratum and leads
Hot influence has inaccuracy in terms of the length in monitoring crack, width, orientation and inclination angle；Under-mine TV method can only record
Preforation tunnel situation is taken, there is inaccuracy in terms of the length in monitoring crack, width, orientation and inclination angle；Incline surrounding well underground
Oblique method well spacing is more remote, and resolution ratio is lower；Ground deviational survey increases with depth, and resolution ratio declines；Well inclined instrument of constructing is calculating crack
Length when, it is necessary to calculated by fracture height and width.More than conventional method be unable to the length in comprehensive monitoring crack, height,
Width, azimuth, monitoring effect are poor.
Utility model content
The purpose of this utility model is to provide a kind of microseism pressure break intelligent identification device, accurately knows shale gas well in real time
Development process medium and deep geologic structure situation.
To achieve the above object, the utility model provides following scheme：
A kind of shale gas develops microseism pressure break intelligent identification device, and described device includes：Power supply, signal processing device
It puts, three-component geophone；The three-component geophone is installed on micro-seismic monitoring underground；The signal processing apparatus, the confession
Power supply is mounted on the ground of micro-seismic monitoring well correspondence position；
The power supply is connected with the signal processing apparatus, for being powered to the signal processing apparatus；
The signal processing apparatus is connected with the three-component geophone, and the three-component geophone is used to capture pressure break
The small seismic event waveform data that activity generates, the signal processing apparatus are used to receive the small of the three-component geophone capture
The analog signal of seismic event waveform data is simultaneously handled the analog signal of the small seismic event waveform data, generates number letter
Number；
The signal processing apparatus is connected with monitoring center, and the monitoring center is used to receive the signal processing apparatus
The digital signal of transmission.
Optionally, the signal processing apparatus specifically includes：Embedded controller module, the first filter circuit module, journey
Control gain amplification module, the second filter circuit module, analog-digital converter module, SD memory modules, wireless transport module, GPS schools
When module；
First filter circuit module is connected with the three-component geophone, and first filter circuit module is used for
The high frequency spurs that high frequency spurs caused by filtering out external interference and the power supply contain；
The programme-controlled gain amplification module is connected with first filter circuit module, and the programme-controlled gain amplification module is used
In the frequency and amplitude of amplifying the small seismic event waveform data analog signal；
Second filter circuit module is connected with the programme-controlled gain amplification module；Second filter circuit module is used
In the high frequency spurs that the high frequency spurs and the power supply that filter out the programme-controlled gain amplification module output contain；
The analog-digital converter module is connected with second filter circuit module, and the analog-digital converter module will gather
The small seismic event waveform data analog signal come in carries out digital conversion, by the small seismic event waveform data analog signal
Be converted to the digital signal that the embedded controller can identify；
The SD memory modules are connected with the analog-digital converter module, and the SD memory modules collect for storage
The original small seismic event waveform data analog signal data；
The wireless transport module is connected with the SD memory modules, and the wireless transport module is used to collect described
The original small seismic event waveform data analog signal data be transmitted to the monitoring center；
Module is connected with the embedded controller module during GPS schools, and module is for calibrating during the GPS schools
The time of system；
The embedded controller module and the power supply, the analog-digital converter module, SD storage moulds
Module is bi-directionally connected when block, the wireless transport module, the GPS schools；The embedded controller module with it is described program-controlled
Gain amplification module unidirectionally connects；The embedded controller module is used to carry out logical-sequential control to above-mentioned module；
The power supply amplifies with the three-component geophone, first filter circuit module, the programme-controlled gain
Module, second filter circuit module, the analog-digital converter module are unidirectionally connected, the power supply and the insertion
Formula controller module is two-way to be connected, and the power supply is to the three-component geophone, first filter circuit module, described
Programme-controlled gain amplification module, second filter circuit module, the analog-digital converter module, the embedded controller module
It is powered.
Optionally, the power supply is ± 5V/ ± 3.3V power modules.
Optionally, the signal processing apparatus further includes：Differential input circuit, the Differential input circuit input terminal and institute
3 signal input parts for stating three-component geophone are connected, and the Differential input circuit output terminal amplifies with the programme-controlled gain
Module is connected, and the signal input part of the signal processing apparatus uses Differential Input mode with suppression common mode interference signal.
Optionally, the programme-controlled gain amplification module is specially：PGA280AIPW number amplifier chips, the embedded control
Device module processed is communicated by SPI interface and the PGA280AIPW numbers amplifier chip, adjustable gain, with the number issued
0~10 setting enlargement ratio, corresponding enlargement ratio are 1/8~128.
Optionally, the embedded controller module is specially：The embeded processor of STM32F4 series is as described embedding
Enter formula controller module, dominant frequency 168MHz is internally integrated 256KB static RAMs, and it is synchronously dynamic to configure 16M outside piece
State random access memory.
Optionally, the analog-digital converter module is specially：CS5361 audio A/D converters, 192KHz sample rates, 24
Resolution ratio, binary channels input, IIS data-interfaces.
Optionally, the embedded controller module further includes：
SDI0 control unit interfaces, for connecting 32GSD cards storage data；
RS232 interface, for connecting GPS module；
I O port line group 1, for controlling X roads gain-programmed amplifier PGA280AIPW；
I O port line group 2, for controlling Y roads gain-programmed amplifier PGA280AIPW；
I O port line group 3, for controlling Z roads gain-programmed amplifier PGA280AIPW；
IIS1 interfaces, for connecting first CS5361, the data in acquisition X, Y roads；
IIS2 interfaces, for connecting second CS5361, the data in acquisition Z roads；
FMC interfaces, for SDRAM outside connection sheet.
According to specific embodiment provided by the utility model, the utility model discloses following technique effects：
In the present apparatus by using lay multiple three-component geophones monitor fractured well induced in fracturing process it is micro-
Seismic wave, this microearthquake wave can be described in detail the geometry and spatial of crack growth in fracturing process, pass through signal
Processing unit can monitor height, length and the azimuth information that crack is generated in pressing crack construction process in real time, can be accurate in real time
Know shale gas well geology of deep part structure change in the process of development.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments, for those of ordinary skill in the art, without having to pay creative labor, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 develops microseism pressure break intelligent identification device figure for the utility model embodiment shale gas；
Fig. 2 is the utility model embodiment signal processing apparatus structure chart；
Fig. 3 is the embedded controller modular device figure of the utility model embodiment STM32F4 series；
Fig. 4 is the utility model embodiment Differential input circuit figure；
Fig. 5 is the circuit diagram of the utility model embodiment programme-controlled gain amplification module；
Fig. 6 is the circuit diagram of the utility model embodiment analog-digital converter module.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained shall fall within the protection scope of the present invention.
The purpose of this utility model is to provide a kind of microseism pressure break intelligent identification device, accurately knows shale gas well in real time
Development process medium and deep geologic structure situation.
To enable the above-mentioned purpose of the utility model, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings and have
Body embodiment is described in further detail the utility model.
Fig. 1 develops microseism pressure break intelligent identification device figure for the utility model embodiment shale gas.It is described referring to Fig. 1
Device includes：Power supply 101, signal processing apparatus 102, three-component geophone 103；The three-component geophone 103 is installed
In micro-seismic monitoring underground；The signal processing apparatus 102, the power supply 101 correspond to position mounted on micro-seismic monitoring well
The ground put；
The power supply 101 is connected with the signal processing apparatus 102, for being carried out to the signal processing apparatus
Power supply；The power supply is ± 5V/ ± 3.3V power modules.
The signal processing apparatus 102 is connected with the three-component geophone 103, and the three-component geophone 103 is used
In the small seismic event waveform data for capturing fracturing activities generation, the signal processing apparatus 102 is examined for receiving the three-component
Ripple device 103 capture small seismic event waveform data analog signal and to the small seismic event waveform data analog signal at
Reason；
The signal processing apparatus 102 is connected with monitoring center, and the monitoring center is used to receive the signal processing
The digital signal that device is sent.
The utility model monitors pressure by laying multiple three-component geophones in the micro-seismic monitoring well near fractured well
The microearthquake wave that well induces in fracturing process is split, so as to describe the geometry of crack growth and space point in fracturing process
Cloth can provide height, length and the azimuth information that crack is generated in pressing crack construction process in real time, can be excellent using these information
Change the development stimulations such as well location Design and optimization well pattern, so as to improve recovery ratio.
Fig. 2 is the utility model embodiment signal processing apparatus structure chart.
Referring to Fig. 2, the signal processing apparatus specifically includes：Embedded controller module 201, the first filter circuit module
202nd, programme-controlled gain amplification module 203, the second filter circuit module 204, analog-digital converter module 205, SD memory modules 206,
Module 208 when wireless transport module 207, GPS schools；
First filter circuit module 202 is connected with the three-component geophone 103, the first filter circuit mould
Block 202 is used for the high frequency spurs that high frequency spurs and the power supply 101 caused by filtering out external interference contain；
The programme-controlled gain amplification module 203 is connected with first filter circuit module 202, the programme-controlled gain amplification
Module 203 is used to amplify the frequency and amplitude of the small seismic event waveform data analog signal；
Second filter circuit module 204 is connected with the programme-controlled gain amplification module 203；Second filter circuit
Module 204 is used to filter out the height that the high frequency spurs of the output of programme-controlled gain amplification module 203 and the power supply 101 contain
Frequency clutter；
The analog-digital converter module 205 is connected with second filter circuit module 204, the analog-digital converter module
205 will gather the small digital conversion of seismic event waveform data analog signal progress come in, by the small seismic events ripple
Shape analog signal is converted to the digital signal that the embedded controller 201 can identify；
The SD memory modules 206 are connected with the analog-digital converter module 205, and the SD memory modules 206 are used to deposit
Store up the original small seismic event waveform data analog signal data collected；
The wireless transport module 207 is connected with the SD memory modules 206, and the wireless transport module 207 is used for will
The original small seismic event waveform data analog signal data collected is transmitted to the monitoring center 209；
Module 208 is connected with the embedded controller module 201 during the GPS schools, module 208 during the GPS schools
For the time of calibration system；
It is the embedded controller module 201 and the power supply 101, the analog-digital converter module 205, described
Module 208 is bi-directionally connected when SD memory modules 206, the wireless transport module 207, the GPS schools；The embedded control
Device module 201 processed is unidirectionally connected with the programme-controlled gain amplification module 203；The embedded controller module 201 be used for
It states module and carries out logical-sequential control；
It is the power supply 101 and the three-component geophone 103, first filter circuit module 202, described program-controlled
Gain amplification module 203, second filter circuit module 204, the analog-digital converter module 205 are unidirectionally connected, the confession
Power supply 101 with the embedded controller module 201 is two-way is connected, the power supply 101 is to the three-component geophone
103rd, first filter circuit module 202, the programme-controlled gain amplification module 203, second filter circuit module 204,
The analog-digital converter module 205, the embedded controller module 201 are powered.
The acquisition of microseism signal is the process of a continuous acquisition, and data volume is larger and needs real-time storage, therefore is
System will accomplish low-power consumption as much as possible in type selecting.Fig. 3 is the embedded Control of the utility model embodiment STM32F4 series
Device modular device figure.As shown in figure 3, this patent selects the embeded processor of STM32F4 series as central cpu chip, it is main
Frequency is 168MHz, and actual performance index is 1.25DMIPS/MHz, has higher energy consumption ratio, is internally integrated 256KB SRAM,
The needs of data buffer storage can be met, processor I/O interface is more, has IIS data ports, the DMA of CPU is coordinated to interrupt
Pattern for the quick access of AD data, configures 16M SDRAM, for the caching of continuous data outside piece.
The embedded controller module further includes：
SDI0 control unit interfaces 301, for connecting 32GSD cards storage data；
RS232 interface 302, for connecting GPS module；
I O port line group 1303, for controlling X roads gain-programmed amplifier PGA280AIPW；
I O port line group 2304, for controlling Y roads gain-programmed amplifier PGA280AIPW；
I O port line group 3305, for controlling Z roads gain-programmed amplifier PGA280AIPW；
IIS1 interfaces 306, for connecting first CS5361, the data in acquisition X, Y roads；
IIS2 interfaces 307, for connecting second CS5361, the data in acquisition Z roads；
FMC interfaces 308, for SDRAM outside connection sheet.
Fig. 4 is the utility model embodiment Differential input circuit figure.As shown in figure 4, the signal input of Differential input circuit
End uses Differential Input mode with suppression common mode interference signal, and low-pass filter has been used to inhibit high-frequency noise, input termination
Enter zener diode, prevent in external environment the entrance of electrostatic and the signal amplitude of sensor is excessive causes wafer damage.
The Differential input circuit input terminal is connected with 3 signal input parts of the three-component geophone, the difference
Input circuit output terminal is divided to be connected with the programme-controlled gain amplification module, the signal input part of the signal processing apparatus uses
Differential Input mode is with suppression common mode interference signal.
Fig. 5 is the circuit diagram of the utility model embodiment programme-controlled gain amplification module.As shown in figure 5, programme-controlled gain amplifies
Circuit (PGA) select PGA280AIPW number amplifier chips, state embedded controller module by SPI interface with it is described
PGA280AIPW number amplifier chips are communicated, adjustable gain, set enlargement ratio with the number 0~10 issued, correspondence is put
Big multiplying power is 1/8~128, and output signal further carries out High frequency filter and differential filtering, reduces signal noise.
Fig. 6 is the circuit diagram of the utility model embodiment analog-digital converter module.As shown in fig. 6, analog to digital conversion circuit
(ADC) be microseism signal acquisition core, circuit select CS5361 audio A/D converters, have 192KHz sample rates,
24 bit resolutions, binary channels input, IIS data-interfaces.It brings into operation after AD converter power-up initializings, with 1KHz's
Sample rate binary channels parallel acquisition, data deposit processor buffer circle, trigger signal when receiving GPS schools pass through place
The DMA managers of reason device move the data of buffering area to external memory, improve the speed of data processing.Due to using system
One clock drives, and the time difference is fixed, and sampling time interval is fixed, and sample frequency is uniform, is sampled without any interference, be ensure that threeway
The relative accuracy in road sampling time.
More demanding for time precision in view of microseism data acquisition, cpu chip external crystal-controlled oscillation is in long-play
After can generate unavoidable error, so the utility model when devising GPS schools on circuit module as time service benchmark,
On the premise of GPS satellite signal is stablized, the reacquisition time of GPS is 1s, and absolute time accuracy can reach 10-4Second, with second signal
As the division symbolizing of AD data lengths, after GPS seconds interrupt, data are stored in SD card, while stamp the time hereof
Stamp, so as to ensure that the uniformity of distributed capture station gathered data time.
Hardware starts to initialize microseism intelligent identification device after the power is turned on, is sequentially followed successively by cpu clock, CPU is interrupted, piece
Outer SDRAM, LED light, spi bus, RS232 serial ports, house dog, default parameters reading, GPS, SD card, the outer AD moduluses of piece turn
AD, gain-programmed amplifier PGA280 in parallel operation CS5361, piece.After initialization, by the delay of 1 minute or so, GPS was
Through that can receive time service information, CS5361 starts gathered data under GPS time driving, enables DMA channel, each minute deposits
A frame data are stored up, are so continued up down, the pause storage data in the case where losing GPS signal.
The utility model monitors pressure by laying multiple three-component geophones in the micro-seismic monitoring well near fractured well
The microearthquake wave that well induces in fracturing process is split, so as to describe the geometry of crack growth and space point in fracturing process
Cloth can provide height, length and the azimuth information that crack is generated in pressing crack construction process in real time, can be excellent using these information
Change the development stimulations such as well location Design and optimization well pattern, so as to improve recovery ratio.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
Specific case used herein is set forth the principle and embodiment of the utility model, above example
Explanation be only intended to help to understand the method and its core concept of the utility model；Meanwhile for the general technology of this field
Personnel, according to the thought of the utility model, in specific embodiments and applications there will be changes.In conclusion
This specification content should not be construed as the limitation to the utility model.
Claims (8)
1. a kind of shale gas develops microseism pressure break intelligent identification device, which is characterized in that described device includes：Power supply,
Signal processing apparatus, three-component geophone；The three-component geophone is installed on micro-seismic monitoring underground；The signal processing device
It puts, the power supply is mounted on the ground of micro-seismic monitoring well correspondence position；
The power supply is connected with the signal processing apparatus, for being powered to the signal processing apparatus；
The signal processing apparatus is connected with the three-component geophone, and the three-component geophone is used to capture fracturing activities
The small seismic event waveform data generated, the signal processing apparatus are used to receive the small earthquake that the three-component geophone captures
The analog signal of event waveforms is simultaneously handled the analog signal of the small seismic event waveform data, generates digital signal；
The signal processing apparatus is connected with monitoring center, and the monitoring center sends for receiving the signal processing apparatus
Digital signal.
2. microseism pressure break intelligent identification device according to claim 1, which is characterized in that the signal processing apparatus tool
Body includes：Embedded controller module, the first filter circuit module, programme-controlled gain amplification module, the second filter circuit module, mould
Module when number converter module, SD memory modules, wireless transport module, GPS schools；
First filter circuit module is connected with the three-component geophone, and first filter circuit module is used to filter out
The high frequency spurs that high frequency spurs caused by external interference and the power supply contain；
The programme-controlled gain amplification module is connected with first filter circuit module, and the programme-controlled gain amplification module is used to put
The frequency and amplitude of the big small seismic event waveform data analog signal；
Second filter circuit module is connected with the programme-controlled gain amplification module；Second filter circuit module is used to filter
The high frequency spurs contained except the high frequency spurs of programme-controlled gain amplification module output and the power supply；
The analog-digital converter module is connected with second filter circuit module, and the analog-digital converter module will gather
The small seismic event waveform data analog signal carry out digital conversion, will the small seismic event waveform data analog signal conversion
The digital signal that can be identified for the embedded controller；
The SD memory modules are connected with the analog-digital converter module, and the SD memory modules collect original for storage
The small seismic event waveform data analog signal data；
The wireless transport module is connected with the SD memory modules, and the wireless transport module is used for the original collected
The small seismic event waveform data analog signal data that begins is transmitted to the monitoring center；
Module is connected with the embedded controller module during GPS schools, and module is for calibration system during the GPS schools
Time；
It is the embedded controller module and the power supply, the analog-digital converter module, the SD memory modules, described
Module is bi-directionally connected when wireless transport module, the GPS schools；The embedded controller module is amplified with the programme-controlled gain
Module unidirectionally connects；The embedded controller module is used to carry out logical-sequential control to above-mentioned module；
The power supply and the three-component geophone, first filter circuit module, the programme-controlled gain amplification module,
Second filter circuit module, the analog-digital converter module are unidirectionally connected, the power supply and the embedded control
Device module processed is two-way to be connected, and the power supply is to the three-component geophone, first filter circuit module, described program-controlled
Gain amplification module, second filter circuit module, the analog-digital converter module, the embedded controller module carry out
Power supply.
3. microseism pressure break intelligent identification device according to claim 1, which is characterized in that the power supply for ±
5V/ ± 3.3V power modules.
4. microseism pressure break intelligent identification device according to claim 2, which is characterized in that the signal processing apparatus is also
Including：Differential input circuit, the Differential input circuit input terminal are connected with 3 signal input parts of the three-component geophone
It connects, the Differential input circuit output terminal is connected with the programme-controlled gain amplification module, the signal of the signal processing apparatus
Input terminal uses Differential Input mode with suppression common mode interference signal.
5. microseism pressure break intelligent identification device according to claim 2, which is characterized in that the programme-controlled gain amplifies mould
Block is specially：PGA280AIPW number amplifier chips, the embedded controller module by SPI interface with it is described
PGA280AIPW number amplifier chips are communicated, adjustable gain, and enlargement ratio is set by the number 0~10 issued, corresponding
Enlargement ratio is 1/8~128.
6. microseism pressure break intelligent identification device according to claim 2, which is characterized in that the embedded controller mould
Block is specially：The embeded processor of STM32F4 series, dominant frequency 168MHz are internally integrated 256KB static random access memories
Device, piece configure 16M synchronous DRAMs outside.
7. microseism pressure break intelligent identification device according to claim 2, which is characterized in that the analog-digital converter module
Specially：CS5361 audio A/D converters, 192KHz sample rates, 24 bit resolutions, binary channels input, IIS data-interfaces.
8. microseism pressure break intelligent identification device according to claim 2, which is characterized in that the embedded controller mould
Block further includes：
SDI0 control unit interfaces, for connecting 32GSD cards storage data；
RS232 interface, for connecting GPS module；
I O port line group 1, for controlling X roads gain-programmed amplifier PGA280AIPW；
I O port line group 2, for controlling Y roads gain-programmed amplifier PGA280AIPW；
I O port line group 3, for controlling Z roads gain-programmed amplifier PGA280AIPW；
IIS1 interfaces, for connecting first CS5361, the data in acquisition X, Y roads；
IIS2 interfaces, for connecting second CS5361, the data in acquisition Z roads；
FMC interfaces, for SDRAM outside connection sheet.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220979A (en) * | 2019-06-26 | 2019-09-10 | 重庆地质矿产研究院 | High and steep bank slope stability monitoring system and evaluation method based on microseism technology |
| CN111522060A (en) * | 2020-04-17 | 2020-08-11 | 重庆地质矿产研究院 | Earthquake monitoring system for shale gas development area |
-
2017
- 2017-08-14 CN CN201721011084.4U patent/CN207408602U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220979A (en) * | 2019-06-26 | 2019-09-10 | 重庆地质矿产研究院 | High and steep bank slope stability monitoring system and evaluation method based on microseism technology |
| CN110220979B (en) * | 2019-06-26 | 2021-12-10 | 重庆地质矿产研究院 | High and steep bank slope stability monitoring system and evaluation method based on microseism technology |
| CN111522060A (en) * | 2020-04-17 | 2020-08-11 | 重庆地质矿产研究院 | Earthquake monitoring system for shale gas development area |
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