TWI570428B - A geological data surveying system - Google Patents

Description

Geological data detection system

The invention provides a geological data detecting system, in particular to continuously and continuously collect data of at least two kinds of geological detecting technologies at the same time and mix the data of the at least two kinds of geological detecting technologies into a geological data detecting of a mixed signal output. system.

Geo-electrical survey is a survey of underground electrical resistivity (Electrical Resistivity) or related electrical structures in Geophysical Prospecting technology, which includes active source image scanning of the ground source. (Electrical Resistivity Tomography, ERT for short) and Passive Source (Self-Potential, SP for short). This is called active source and passive source. It refers to whether the source of the signal is manually provided during the exploration process. Therefore, the SP method of the passive source receives the voltage difference existing in the earth's body below the natural ground, and the ERT rule of the active source is to pass the current to the ground below the surface, and separately create an artificial electric field, and collect the ground surface accordingly. The artificial field voltage difference data reflected by the artificial electric field.

At present, existing electrical detection instruments are independent of the collection of active source ERT data and passive source SP data, and cannot simultaneously collect data of two types of exploration techniques. Furthermore, the voltage difference data provided by the existing instruments are also the results of a single test in a short period of time, and continuous monitoring data for several days has not been provided.

In view of the above problems, the present invention provides a geological data detection system capable of simultaneously and long-term use of two geological detection methods for data collection, and mixing data signals collected according to two geological detection methods into one mixed signal output. Then, the mixed signal is separated into an active source geological detection signal and a passive source geological detection signal for later analysis by a user. The geological data detection system of the present invention comprises a data detection module, a signal decomposition module, an active source signal processing module and a passive source signal processing module.

The data detection module is configured to receive an input instruction of a user, and utilize an active source geological detection method and a passive source geological detection method to detect and collect geological data within a predetermined time range, and output a mixture. The mixed signal of the above two kinds of data. The data detection module is fixed at a detection location for continuous detection for a long time, and is controlled by the user at the remote end via the network and monitored at any time. The signal decomposition module divides the mixed signal into a geological detection signal of an active source and a geological detection signal of a passive source according to the geological detection method, so that the user can separately process the active source signal processing module and a passive source signal. Module for subsequent data analysis.

Compared with the prior art, the present invention provides an active source geological detection method, and the simultaneity of the data collection of the passive source geological detection method, can specifically improve the number of data surveyed in the field, and can be efficient and At the same time, there are two kinds of data constraints to improve the credibility of the electrical model. In addition, the present invention can closely monitor the continuous changes in the physical state of the target object (such as water content, pollutant concentration, etc.) by observing changes in the resistivity under the surface by long-term observation.

1‧‧‧Geological data detection system

10‧‧‧Data Detection Module

101‧‧‧ parameter setting device

102‧‧‧Geological detection device

1021‧‧‧Active source geological data finder

1022‧‧‧ Passive source geological data finder

12‧‧‧ Signal Decomposition Module

121‧‧‧Signal format conversion finishing device

14‧‧‧Active source signal processing module

16‧‧‧ Passive source signal processing module

S0‧‧‧ parameter instruction

S1‧‧‧ parameter control signal

S2‧‧‧ mixed signal

S3‧‧‧ active source geological detection signal

S4‧‧‧ Passive source geological detection signal

Figure 1 depicts a functional block diagram in accordance with one embodiment of the present invention.

FIG. 2 is a detailed functional block diagram of a data detection module and a signal decomposition module according to an embodiment of the present invention.

Figure 3 depicts a detailed functional block diagram of a geological detection device in accordance with one embodiment of the present invention.

Figure 4A depicts a schematic diagram of a mixed signal collected over two days in accordance with one embodiment of the present invention.

Figure 4B is a schematic diagram showing the decomposition of the mixed signal collected in two days according to one embodiment of the present invention into an active source only geological sounding signal (ERT).

Figure 4C is a schematic diagram showing the decomposition of the mixed signal collected in two days according to a specific embodiment of the present invention into a passive source only geological sounding signal (SP).

Figure 5A depicts a schematic diagram of a mixed signal collected in 220 seconds in accordance with one embodiment of the present invention.

Figure 5B is a schematic diagram showing the decomposition of the mixed signal collected in 220 seconds into an active source only geological sounding signal (ERT) according to one embodiment of the present invention.

Figure 5C is a schematic diagram showing the decomposition of the mixed signal collected in 220 seconds into a passive source only geological sounding signal (SP) according to one embodiment of the present invention.

The preferred embodiments of the present invention will be described in detail in the following description.

Referring first to Figure 1, Figure 1 depicts a functional block diagram in accordance with one embodiment of the present invention. As shown in FIG. 1 , the present invention provides a geological data detection system 1 including: a data detection module 10 , a signal decomposition module 12 , an active source signal processing module 14 , and a Passive source signal processing module 16.

The data detecting module 10 receives an input command S0 from a user, simultaneously performs an active source geological detecting data and a passive source geological detecting data detection and collection in a predetermined time, and outputs the foregoing two types. A mixed signal S2 of geological data. The geological detection data of the active source includes an electrical electrical resonance imaging (ERT) data; the geological detection data of the passive source includes a natural potential (Self-Potential, SP) data; wherein, the frequency range of the mixed signal S2 It is within 0 to 1000 Hz. The active source and passive source referred to here are discriminated by whether the signal source is manually provided during the detection process, and the manually provided signal source is called the active source; and the non-manual, that is, the naturally provided signal source. It is called a passive source.

The data detection module 10 is positioned at a detection location for continuous detection for a long time, and is controlled by the user remotely via the network and monitored at any time. Before the data detection module 10 is set at the fixed location, the line position planning and the non-polarized electrode embedding work for the data detection module 10 are first performed at the fixed location, including the welding isolation line and the electrode waterproof coating.

The signal separation module 12 is configured to receive the mixed signal S2 and decompose the mixed signal S2 into an active source geological detection signal S3 and a passive source geological detection signal S4. In this embodiment, the active source geological detection signal S3 includes an electrical resistivity scan (ERT) signal; the passive source geological detection signal S4 includes a natural potential (Self-Potential, SP) signal. The active source signal processing module 14 and the passive source signal processing module 16 respectively receive the geological detection signal S3 of the active source and the geological detection signal S4 of the passive source for signal processing.

The data detection module 10 is configured to connect and output the mixed signal S2 to the signal decomposition module 12, and the active source signal processing module 14 and the passive source signal processing module 16 are respectively connected to the signal decomposition module 12, and respectively receive the active source. The geological detection signal S3 and the geological detection signal S4 of the passive source form the geological data detection system 1 of the present invention.

Referring to FIG. 2, FIG. 2 is a detailed functional block diagram of the data detection module and the signal decomposition module according to an embodiment of the present invention.

In the embodiment, the data detecting module 10 includes a parameter setting device 101 and a geological detecting device 102. The parameter setting device 101 receives one of the parameter commands S0 input by the user, and outputs a corresponding parameter control signal S1 according to the parameter command S0 input by the user, and the geological detecting device 102 is connected to the parameter setting device 101 for The parameter control signal S1 output by the setting device 101 is configured to simultaneously collect the geological detection data of the active source and the geological detection data of the passive source, and output the mixed signal S2. The parameters set by the parameter setting device 101 according to the parameter command S0 include the electrode discharge arrangement order of the geological detection device 102, the electrode discharge time series scheduling, the compression mode of the mixed signal S2, and the time schedule returned to the user.

Please continue to refer to FIG. 2. In this embodiment, the signal decomposition module 12 includes a signal format conversion device 121. After the mixed signal S2 is input to the signal decomposition module 12, the mixed signal S2 is mixed by the signal format conversion device 121. The geological detection signal S3 decomposed into an active source and the geological detection signal S4 of the passive source. The signal format conversion device 121 is an active source belonging to the known input and output of the mixed signal S2, because the signal source waveform input in the active source geological signal S3 and the measured signal waveform are known. The geological detection signal S3 is separated from the mixed signal S2, and the original mixed signal S2 will have a geological detection signal S4 of the passive source whose input signal source mode is unknown.

Referring to FIG. 3, FIG. 3 is a detailed functional block diagram of a geological detecting device according to an embodiment of the present invention. In the present embodiment, the geological detection device 102 includes an active source geological data finder 1021 and a passive source geological data finder 1022. The active source geological data finder 1021 and the passive source geological data finder 1022 are respectively connected to the parameter setting device. After the parameter control signal S1 is input to the geological detecting device 102, the active source geological data finder 1021 and the passive source geological data finder 1022 are based on The parameter control signal S1 separately and simultaneously collects the geological detection data of the active source and the geological detection data of the passive source, and the geological detecting device 102 outputs the mixed signal S2 including the two kinds of geological data.

Referring to FIG. 4A to FIG. 4C, FIG. 4A to FIG. 4C are probe data collected by an embodiment of the present invention.

Please refer to FIG. 4A first. FIG. 4A is a schematic diagram of the mixed signal collected in two days according to a specific embodiment of the present invention. The unit of the vertical axis is volts, and the horizontal axis is the time axis of two hours. As shown in FIG. 4A, the geological detection signal S3 mixed with the active source and the mixed signal S2 of the geological detection signal S4 of the passive source are collected by an embodiment of the present invention. Also, because the mixed signal S2 is a mixed signal, in order to perform the geological detection signal S3 of the active source and the individual signal processing of the geological detection signal S4 of the passive source, the signal separation is first performed by the signal separation module 12.

After the signal separation by the signal separation module 12, please refer to FIG. 4B to FIG. 4C. FIG. 4B shows that the mixed signal collected in two days according to a specific embodiment of the present invention is decomposed into only active sources. Schematic diagram of the Geological Detection Signal (ERT). Figure 4C is a schematic diagram showing the decomposition of the mixed signal collected in two days according to a specific embodiment of the present invention into a passive source only geological sounding signal (SP).

Since the signal source waveform of the active source geological signal S3 and the measured signal waveform are known, the signal separation unit 121 included in the signal separation module 12 is based on the known input of the mixed signal S2. The output of the active source geological detection signal S3 is separated from the mixed signal S2, and the original mixed signal S2 will have a geological detection signal S4 of the passive source whose signal source mode is unknown.

In this embodiment, the geoelectric detection signal S3 of the separated active source can be subjected to subsequent processing to complete the ground resistance (ERT) image profile, and the separated passive source geological detection signal S4 can be further processed into each electrode. The hourly change and the profile of the adjacent electrode change every hour, and further analysis and comparison of the ground resistance (ERT) image profile results at different times, can be obtained by the influence of the underground resistivity with time, rainfall, temperature and other factors; Potential (SP) data can be used to analyze changes in the underground electrical medium over time.

Please refer to FIG. 5A to FIG. 5C. FIG. 5A to FIG. 5C are another set of detection data collected by an embodiment of the present invention. Please refer to FIG. 5A first. FIG. 5A is a schematic diagram of the mixed signal collected in 220 seconds according to a specific embodiment of the present invention. The vertical axis is in volts and the horizontal axis is the time axis in one second. FIG. 5B is a schematic diagram showing the decomposition of the mixed signal collected in 220 seconds into an active source only geological sounding signal (ERT) according to a specific embodiment of the present invention. Figure 5C is a schematic diagram showing the decomposition of the mixed signal collected in 220 seconds into a passive source only geological sounding signal (SP) according to one embodiment of the present invention.

Since the signal separation and the subsequent signal processing in FIG. 5A to FIG. 5C are the same as those in FIG. 4A to FIG. 4C, the details are not described herein.

In summary, the present invention provides a geological data detection system including a data detection module, a signal decomposition module, an active source signal processing module, and a passive source signal. Processing module. The data detection module can be placed at the location to be tested, and the geological data of the active source and the geological detection method of the passive source continuously detect and collect the geological data in a predetermined time range, and output a mixed data of the foregoing two kinds of data. The mixed signal; the signal decomposition module divides the mixed signal into a geological detection signal of an active source according to a geological detection method, and a geological detection signal of a passive source for the user to perform subsequent data analysis.

Compared with the prior art, the main object of the present invention is to provide an active source geological detection method (ERT), and a simultaneous source geological detection method (SP) data acquisition simultaneity, combined with two underground electrical structure exploration The data collected by the technology at the same time specifically increases the amount of data surveyed in the field, so that the subsequent calculation of the underground electrical structure can efficiently and simultaneously have the constraints of the two types of data, and improve the electrical model. Credibility. Another object of the present invention is to provide an active source geological detection method (ERT), a passive source geological detection method (SP), or a dense continuous monitoring concept simultaneously performed by the foregoing two methods. In the continuous monitoring of the passive source geological detection method (SP), the data detection module has a sampling frequency of 0 to 1000 Hz and transmits the function through the network, allowing the user to monitor the field at any time and any place. Natural electric field change at the site; in the continuous monitoring function of the active source geological detection method (ERT), as long as the parameters such as the electrode discharge arrangement order and the electrode discharge time series scheduling of the geological detection device are controlled, the present invention can effectively separate the parameters. The information of the artificial electric field in the signal depends on the time of the measurement line. The geological detection method (ERT) data of the active source can be frequently collected during the fixed period, and the resistivity structural changes under the surface can be solved to intensively monitor the subsurface. Continuous changes in the physical state of the target (eg, water content, contaminant concentration, etc.).

The features and spirit of the present invention are clearly described in the above detailed description of the preferred embodiments, and the scope of the present invention is not limited by the preferred embodiments disclosed herein. system. Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and it is to be understood that the invention may be modified and modified without departing from the spirit and scope of the invention. The scope is subject to the definition of the scope of the patent application attached.

1‧‧‧Geological data detection system

10‧‧‧Data Detection Module

12‧‧‧ Signal Decomposition Module

14‧‧‧Active source signal processing module

16‧‧‧ Passive source signal processing module

S0‧‧‧ parameter instruction

S2‧‧‧ mixed signal

S3‧‧‧ active source geological detection signal

S4‧‧‧ Passive source geological detection signal

Claims (10)

A geological data detection system includes: a data detection module configured to simultaneously collect an active source geological detection data and a passive source geological detection data to output a mixed signal; and a signal decomposition module Connected to the data detection module for receiving the mixed signal and decomposing the mixed signal into an active source geological detection signal and a passive source geological detection signal. The geological data detection system of claim 1, wherein the passive source geological detection data comprises a natural potential (Self-Potential, SP) data and the active source geological detection data comprises a ground resistance image scan ( Electrical Resistivity Tomography, ERT) data. The geological data detection system of claim 1, wherein the passive source geological detection signal comprises a Self-Potential (SP) signal and the active source geological detection signal comprises a ground resistance image scan ( Electrical Resistivity Tomography, ERT) signal. The geological data detection system of claim 1, wherein the signal decomposition module comprises a signal format conversion device, wherein the signal format conversion device comprises the geological detection signal belonging to the active source in the mixed signal After separation, the geological detection signal of the passive source is obtained. The geological data detecting system of claim 1, wherein the mixed signal has a frequency range of 0 to 1000 Hz. The geological data detection system described in claim 1 further comprises: An active source signal processing module; and a passive source signal processing module; wherein the active source signal processing module and the passive source signal processing module are respectively connected to the signal separation module, and respectively receive the geological of the active source The detection signal and the geological detection signal of the passive source are used for signal processing. The geological data detecting system of claim 1, wherein the data detecting module comprises: a parameter setting device for inputting a parameter command according to a user to output a corresponding parameter control signal; and The geological detection device is connected to the parameter setting device for controlling the signal according to the parameter to simultaneously collect the geological detection data of the active source and the geological detection data of the passive source, and output the mixed signal. The geological data detecting system of claim 7, wherein the data detecting module is disposed at a detecting location for continuous detection for a long time, and is controlled by the user remotely via the network and at any time. monitor. The geological data detecting system of claim 7, wherein the parameter set by the parameter setting device comprises an electrode discharge sequence of the geological detecting device, an electrode discharge time series scheduling, a signal compression mode, and the mixed signal back. The time schedule passed to the user. The geological data detecting system of claim 7, wherein the geological detecting device comprises: an active source geological data finder; and a passive source geological data finder; The active source geological data finder and the passive source geological data finder separately and simultaneously perform geological detection data of the active source and collection of geological detection data of the passive source.