CN121165189A - Multidirectional shallow electric prospecting device - Google Patents
Multidirectional shallow electric prospecting deviceInfo
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- CN121165189A CN121165189A CN202511392246.2A CN202511392246A CN121165189A CN 121165189 A CN121165189 A CN 121165189A CN 202511392246 A CN202511392246 A CN 202511392246A CN 121165189 A CN121165189 A CN 121165189A
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Abstract
本申请涉及电法勘探技术领域，尤其是涉及一种多方向浅部电法勘探装置，包括：第一承载面板和第二承载面板；所述第一承载面板上设置有发射机和至少两组发射电极组，所述第二承载面板上设置有接收机和至少两组接收电极组；所述发射机与所述发射电极组连接用于向地下注入电流，所述接收机与所述接收电极组连接用于采集电压信号；所述发射机和所述接收机分别集成有定位装置和方位角检测装置，通过所述定位装置和所述方位角检测装置确定相应的发射电极组/接收电极组的坐标，所述发射机配置为按预定时序依次切换各组发射电极组进行电流输出，所述接收机配置为持续采集各组接收电极组的电压信号。达到了减少人力物力、抑制异常体影响、提高激电参数稳定性的效果。
This application relates to the field of electrical exploration technology, and in particular to a multi-directional shallow electrical exploration device, comprising: a first support panel and a second support panel; a transmitter and at least two sets of transmitting electrode groups are disposed on the first support panel, and a receiver and at least two sets of receiving electrode groups are disposed on the second support panel; the transmitter is connected to the transmitting electrode groups for injecting current into the ground, and the receiver is connected to the receiving electrode groups for acquiring voltage signals; the transmitter and the receiver respectively integrate a positioning device and an azimuth angle detection device, the coordinates of the corresponding transmitting electrode groups/receiving electrode groups are determined by the positioning device and the azimuth angle detection device, the transmitter is configured to sequentially switch each set of transmitting electrode groups to output current according to a predetermined time sequence, and the receiver is configured to continuously acquire the voltage signals of each set of receiving electrode groups. This achieves the effects of reducing manpower and material resources, suppressing the influence of anomalies, and improving the stability of induced polarization parameters.
Description
Technical Field
The application relates to the technical field, in particular to a multidirectional shallow electric prospecting device.
Background
Geophysical exploration technology is important for understanding underground geological structures, and has wide application in various fields such as resource exploration, engineering geological investigation and the like. The resistivity method is one of important means of geophysical exploration, and can utilize conductivity differences of different underground rocks to infer stratum structures, find underground targets and solve related geological problems by observing and researching distribution rules of an underground stable current field which is established manually. As shown in fig. 1, current is injected into the underground by using A, B electrodes, a current field (shown as red lines) is built up in the underground, a voltage equipotential surface (shown as blue lines) is formed, the voltage between M, N is measured, the current between A, B is recorded, and the apparent resistivity is calculated according to the position relation of A, B, M, N four electrodes, so that the conductivity of a certain area corresponding to the underground area is obtained. And the electrical characteristics of the whole underground space can be obtained by measuring the distance and the relative position relation of A, B, M, N. The time domain induced polarization method plays an important role in searching metal ores, underground water and solving engineering geological problems according to the induced polarization effect of the rocks and the ores. The working device is the same as the resistivity method, the current waveform is generally a square wave with 50% duty ratio, and after power supply and power off are carried out on uneven ground, the current cannot be rapidly increased or reduced to 0, but a slow rising or falling process occurs. The voltage in the power-off process is the secondary voltage, and the ratio of the secondary voltage to the voltage in the power supply of the stable current is calculated, so that the visual polarization rate can be obtained, and the strength of the induced polarization effect can be reflected. And the visual resistivity and the visual polarization rate are combined to carry out post-processing and explanation, so that the electrical characteristics of the underground space can be comprehensively and comprehensively reflected.
In practical applications of resistivity methods and time domain induced polarization methods, conventional high density electrical methods are common means. The high density electric method adopts array device to work, and its instrument is generally composed of host machine, electrode switch and cable. The distributed high-density electric instrument distributes the electrode change-over switches on cables and electrodes, and the different cables can be connected to expand the number of the electrodes, so that the number of cores and the weight of a single cable are reduced to a certain extent.
However, existing high density electrical methods suffer from a number of drawbacks. It can only emit current and measurement voltage along the direction of the survey line, and when facing the situation that three-dimensional electrical anomalies exist or the anisotropy is serious (which is very common in shallow electrical exploration), the later data processing and the two-dimensional inversion can generate larger deviation. Meanwhile, the cables of the high-density electrical method are heavy, the laying process is complex, more manpower and material resources are needed to be input, and the electrode spacing is limited by the cables and cannot be flexibly set. In addition, because the lead wire is thin, the power supply current is small, and the arrangement difficulty of the unpolarized electrode is high, the high-precision excitation parameter is difficult to measure.
Disclosure of Invention
The application provides a multidirectional shallow electrical prospecting device, which achieves the effects of reducing manpower and material resources, inhibiting the influence of abnormal bodies and improving the stability of excitation parameters.
The above object of the present application is achieved by the following technical solutions:
The application provides a multidirectional shallow electric prospecting device which comprises a first bearing panel and a second bearing panel, wherein a transmitter and at least two groups of transmitting electrode groups are arranged on the first bearing panel, a receiver and at least two groups of receiving electrode groups are arranged on the second bearing panel, the transmitter is connected with the transmitting electrode groups and used for injecting current into the ground, the receiver is connected with the receiving electrode groups and used for collecting voltage signals, a positioning device and an azimuth angle detection device are integrated with the transmitter and the receiver respectively, the coordinates of the corresponding transmitting electrode groups/receiving electrode groups are determined through the positioning device and the azimuth angle detection device, the transmitter is configured to switch the transmitting electrode groups of each group in sequence according to a preset time sequence to output the current, and the receiver is configured to continuously collect the voltage signals of the receiving electrode groups of each group.
Through adopting above-mentioned technical scheme, in measurement process, two operators advance along survey line direction simultaneously, and alone carries first loading panel, alone carries the second loading panel, measures according to preset transmitting and receiving position, after reaching the position, with transmitting electrode group and receiving electrode group respectively with ground coupling, begin data acquisition, need not to lay loaded down with trivial details cable, effectively reduce manpower, material resources and the work load that shallow electrical prospecting device laid. In the acquisition process, the transmitter firstly transmits current by using one group of transmitting electrode groups, and after a period of time, the transmitter is switched to the other group of transmitting electrode groups to transmit current, and in the process, the receiver continuously acquires voltage signals of all receiving electrode groups. Therefore, each measuring point can measure multiple groups of data with different transmitting and receiving directions, and the influence of shallow three-dimensional electrical abnormal bodies and anisotropism is avoided in the later data processing and inversion. And because the transmitter and the transmitting electrode group are integrated on the first bearing panel together, the transmitter and the transmitting electrode group are conveniently connected in a linked way by adopting a thick cable, the transmitter can be ensured to transmit with larger power, and thus, the first bearing panel and the second bearing panel can still measure stable secondary voltage when the distance is longer, and stable visual polarization rate and other excitation parameters can be obtained.
Preferably, the first carrying panel and the second carrying panel are respectively in disc-shaped structures.
By adopting the technical scheme, the disc-shaped structure is convenient to carry manually, and a plurality of groups of transmitting electrode groups/receiving electrode groups are convenient to uniformly arrange.
Preferably, the transmitter is disposed at the center of the first carrier panel, and the receiver is disposed at the center of the second carrier panel.
Through adopting above-mentioned technical scheme, such layout makes the focus of device comparatively stable, portable and operation.
Preferably, the transmitting electrode set and the receiving electrode set are distributed in an annular array along the edges of the corresponding first bearing panel and second bearing panel.
Through adopting above-mentioned technical scheme, this kind of distribution mode makes transmitting electrode group and receiving electrode group evenly distributed in the circumferencial direction, can follow a plurality of directions and pour into electric current and gather voltage signal into underground, has further improved the comprehensive of exploration.
Preferably, the transmitting electrode group comprises four groups and is distributed in four symmetrical orientations of the first bearing panel, and the receiving electrode group comprises four groups and is distributed in four symmetrical orientations of the second bearing panel.
By adopting the technical scheme, the distribution can form a more regular current field and voltage acquisition mode, and is convenient for data processing and analysis.
Preferably, the conducting paths between the transmitting electrode set and the transmitter and between the receiving electrode set and the receiver adopt conducting wires with the sectional area larger than or equal to 1.5mm 2.
Through adopting above-mentioned technical scheme, guarantee that the transmitter can remove the transmission with great power, first load-bearing panel and second load-bearing panel still can measure stable secondary voltage when the distance is far away like this, can acquire stable visual polarization rate etc. and swash electric parameters.
Preferably, the positioning device is a real-time dynamic differential positioning module for positioning coordinates of the transmitter and the receiver, and the azimuth angle detection device is a three-component magnetic resistance sensor for determining azimuth angles of the transmitting electrode group and the receiving electrode group.
By adopting the technical scheme, the positioning device can acquire the midpoint coordinates of the transmitter and the receiver in real time, the azimuth angle detection device can determine the azimuth angles of the transmitting electrode group and the receiving electrode group, and the information is very important for accurately calculating the apparent resistivity and the apparent polarization rate, because the apparent resistivity and the apparent polarization rate are closely related to the positions and the azimuths of the electrodes.
Preferably, the transmitter and the receiver are respectively configured with a wireless communication module, and the coordinate signal collected by the positioning device and the azimuth signal collected by the azimuth detection device are respectively transmitted to an external data processing device in real time through the wireless communication module.
Preferably, the external data processing device calculates the apparent resistivity and the apparent polarization rate of the stratum based on the coordinate signal and the azimuth signal and by combining the current parameter of the transmitter and the voltage parameter of the receiver.
In summary, the application at least comprises the following beneficial technical effects:
1. Because the first bearing panel is integrated with the transmitter and the transmitting electrode group, and the second bearing panel is integrated with the receiver and the receiving electrode group, complicated cables are not required to be laid, and the manpower, material resources and workload of laying the shallow electric prospecting device are effectively reduced.
2. In the acquisition process, the transmitter firstly transmits current by using one group of transmitting electrode groups, and after a period of time, the transmitter is switched to the other group of transmitting electrode groups to transmit current, and in the process, the receiver continuously acquires voltage signals of all receiving electrode groups. Therefore, each measuring point can measure multiple groups of data with different transmitting and receiving directions, and the influence of shallow three-dimensional electrical abnormal bodies and anisotropism is avoided in the later data processing and inversion.
3. Because the transmitter and the transmitting electrode group are integrated on the first bearing panel together, the transmitter and the transmitting electrode group are conveniently connected in a linked mode by adopting a thick cable, the transmitter can be ensured to transmit with larger power, and thus, the first bearing panel and the second bearing panel can still measure stable secondary voltage when the distance is far, and stable visual polarization rate and other excitation parameters can be obtained.
Drawings
FIG. 1 is a schematic diagram of a prior art resistivity method device;
FIG. 2 is a top view of an exploration apparatus of an embodiment of the present application;
FIG. 3 is a front view of an exploration apparatus of an embodiment of the present application;
FIG. 4 is a left side view of an exploration apparatus of an embodiment of the present application.
Detailed Description
The following examples will assist those skilled in the art in further understanding the function of the present application, but are not intended to limit the application in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present application.
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It should be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Example 1
Referring to fig. 2 to 4, the present embodiment provides a multi-directional shallow electrical prospecting apparatus comprising a first carrying panel ④ and a second carrying panel, a transmitter ③ and at least two sets of transmitting electrode sets ① are provided on the first carrying panel ④, a receiver and at least two sets of transmitting electrode sets ① are provided on the second carrying panel, the transmitter ③ is connected to the transmitting electrode sets ① for injecting current into the ground, the receiver is connected to the receiving electrode sets for collecting voltage signals, the transmitter ③ and the receiver are respectively integrated with a positioning device and an azimuth angle detecting device, the coordinates of the corresponding transmitting electrode sets ①/receiving electrode sets are determined by the positioning device and the azimuth angle detecting device, the transmitter ③ is configured to sequentially switch each set of transmitting electrode sets ① for current output at a predetermined timing, and the receiver is configured to continuously collect the voltage signals of each set of receiving electrode sets.
In the measuring process, two operators travel along the measuring line direction simultaneously, one person carries the first carrying panel ④, the other person carries the second carrying panel, measurement is carried out according to preset transmitting and receiving positions, after the positions are reached, the transmitting electrode group ① and the receiving electrode group are well coupled with the ground respectively, data acquisition is started, complicated cables are not required to be laid, and manpower, material resources and workload of laying the shallow electric prospecting device are effectively reduced. In the acquisition process, the transmitter ③ firstly transmits current by using one transmitting electrode group ①, and after a period of time, the transmitter is switched to another transmitting electrode group ① to transmit current, and in the process, the receiver continuously acquires voltage signals of all receiving electrode groups. Therefore, each measuring point can measure multiple groups of data with different transmitting and receiving directions, and the influence of shallow three-dimensional electrical abnormal bodies and anisotropism is avoided in the later data processing and inversion.
Example 2
The embodiment provides a multidirectional shallow electric prospecting device, which comprises a first bearing panel ④ and a second bearing panel, wherein the first bearing panel ④ and the second bearing panel are respectively of disc-shaped structures, the diameter of the panels is 1m, and the multidirectional shallow electric prospecting device is convenient to carry manually and lay outdoors. The four-channel transmitter ③ is arranged in the center of the first carrying panel ④, and the four-channel receiver is arranged in the center of the second carrying panel, so that the center of gravity of the device is stable and the device is convenient to carry and operate. The first carrier panel ④ is provided with 4 sets of emitter electrode sets ① (A1-B1, A2-B2, A3-B3, A4-B4) distributed in four symmetrical orientations of the first carrier panel ④, and the second carrier panel is provided with 4 sets of receiver electrode sets (M1-N1, M2-N2, M3-N3, M4-N4) and are distributed in four symmetrical orientations of the second load-bearing panel. As shown in fig. 2, 8 holes are equally spaced on the front edges of the first and second carrier panels ④, and screws or calipers or other means for fixing electrodes are placed to fix four sets of transmitting electrode sets ① for transmitting current signals to the bottom surface of the first carrier panel ④ and four sets of receiving electrode sets for receiving voltage signals to the bottom surface of the second carrier panel. the emitter electrode group ① can be a copper electrode, which has good conductivity and can effectively inject current into the ground. The shape of which may be a rod-like shape, is convenient to be inserted into the ground. Plate electrodes can be used to increase the contact area with the ground surface and to make the current more uniformly distributed in the ground. The receiving electrode group can adopt a non-polarized electrode, so that the influence of electrode polarization on a measurement result can be reduced, and the measurement accuracy is improved. The shape of the non-polarized electrode can be columnar, so that the electrode is convenient to insert into the ground.
The transmitter ③ is connected to the four sets of transmitting electrodes ① through wires, respectively, for injecting current into the ground, and the receiver is connected to the four sets of receiving electrodes through wires, respectively, for collecting voltage signals. The transmitter ③ and the receiver are respectively integrated with a positioning device and an azimuth angle detection device, the coordinates of the transmitter ③ and the receiver are determined through the positioning device, the azimuth angles of the corresponding transmitting electrode set ①/receiving electrode set are determined through the azimuth angle detection device, and the coordinates of the transmitting electrode set ①/receiving electrode set can be determined according to the coordinates of the transmitter ③/receiver and the azimuth angles of the transmitting electrode set ①/receiving electrode set, so that the apparent resistivity and the apparent polarizability can be accurately calculated. The positioning device is a real-time dynamic differential positioning module (RTK), has high-precision positioning capability, and can accurately determine the position of the device in a field environment. The azimuth detection means is a three-component magneto-resistive sensor which senses the direction of the earth's magnetic field and thereby determines the azimuth of the device. This information is important for accurately calculating apparent resistivity and apparent polarizability, which are closely related to the position and orientation of the electrodes.
The transmitter ③ is configured to sequentially switch each of the sets of transmitting electrodes ① at a predetermined timing for current output, and the receiver is configured to continuously collect the voltage signals of each of the sets of receiving electrodes. If the transmitting electrode set ① of A1-B1 transmits a current signal, the transmitting electrode set ① of A2-B2 transmits after the time T passes, the transmitting electrode set ① of the 4 sets is completed after the time T passes by analogy, and then the measuring of the next measuring point is performed. Each measuring point can measure 4 multiplied by 4=16 groups of data of different transmitting and receiving directions, so that later data processing and inversion are ensured, and the influence caused by shallow three-dimensional electrical abnormal bodies and anisotropism is avoided.
Example 3
The embodiment provides a multi-directional shallow electrical prospecting device, which comprises a first bearing panel ④ and a second bearing panel, wherein the first bearing panel ④ and the second bearing panel are respectively in a disc-shaped structure, a multi-channel transmitter ③ is arranged at the center of the first bearing panel ④, a multi-channel receiver is arranged at the center of the second bearing panel, a positioning device and an azimuth angle detection device are respectively integrated with the transmitter ③ and the receiver, the coordinates of the transmitter ③ and the receiver are determined through the positioning device, and the azimuth angles of corresponding transmitting electrode groups ①/receiving electrode groups are determined through the azimuth angle detection device. The first carrying panel ④ is provided with a plurality of groups of transmitting electrode groups ①, and the transmitting electrode groups are distributed in an annular array along the edge of the first carrying panel ④, and the second carrying panel is provided with a plurality of groups of receiving electrode groups, and the transmitting electrode groups are distributed in an annular array along the edge of the second carrying panel. The distribution mode ensures that the electrode groups are uniformly distributed in the circumferential direction, and can inject current and collect voltage signals into the ground from multiple directions, thereby further improving the exploration comprehensiveness.
Conductive paths ② between the transmitting electrode set ① and the transmitter ③ and between the receiving electrode set and the receiver all adopt wires with the sectional area larger than or equal to 1.5mm2, so that the transmitter ③ can transmit with larger power, and stable secondary voltage can be measured when the distance between the first bearing panel ④ and the second bearing panel is longer, and stable excitation parameters such as visual polarization rate can be obtained.
Example 4
The embodiment provides a multi-directional shallow electrical prospecting device, which comprises a first bearing panel ④ and a second bearing panel, wherein the first bearing panel ④ and the second bearing panel are respectively in a disc-shaped structure, a multi-channel transmitter ③ is arranged at the center of the first bearing panel ④, a multi-channel receiver is arranged at the center of the second bearing panel, a positioning device and an azimuth angle detection device are respectively integrated with the transmitter ③ and the receiver, the coordinates of the transmitter ③ and the receiver are determined through the positioning device, and the azimuth angles of corresponding transmitting electrode groups ①/receiving electrode groups are determined through the azimuth angle detection device. The first carrying panel ④ is provided with a plurality of groups of transmitting electrode groups ①, and the transmitting electrode groups are distributed in an annular array along the edge of the first carrying panel ④, and the second carrying panel is provided with a plurality of groups of receiving electrode groups, and the transmitting electrode groups are distributed in an annular array along the edge of the second carrying panel.
The transmitter ③ and the receiver are respectively configured with a wireless communication module, and the coordinate signal collected by the positioning device and the azimuth signal collected by the azimuth detection device are respectively transmitted to external data processing equipment in real time through the wireless communication module. The external data processing device calculates apparent resistivity and apparent polarization of the formation based on the coordinate signal and the azimuth signal in combination with the current parameter of the transmitter ③ and the voltage parameter of the receiver. For example, the current data recorded by the transmitter ③ and the voltage data recorded by the receiver, the midpoint coordinates of the transmitter ③ and the receiver, and the azimuth angles of the transmitting electrode group ① and the receiving click group can be wirelessly transmitted back to an upper computer such as a mobile phone or a PC in real time, the coordinates of each electrode are obtained according to the midpoint coordinates and the electrode azimuth angles of the transmitter ③ and the receiver, the device coefficients of the resistivity method are obtained by calculation, and the apparent resistivity and the apparent polarizability are further obtained by calculation. The upper computer can also display and analyze data in real time, and draw a apparent resistivity simulated section graph to obtain underground electrical anomalies.
The specific measurements are as follows:
In the measurement process, two operators travel along the measuring line direction simultaneously, one person carries the first carrying panel ④, one person carries the second carrying panel, the first carrying panel ④ is integrated with a transmitter ③ and four groups of transmitting click groups, and the second carrying panel is integrated with a receiver and four groups of receiving motor groups. And measuring according to the preset transmitting and receiving positions before working, and after the positions are reached, respectively coupling the transmitting electrode group ① and the receiving electrode group with the ground, and starting data acquisition.
The transmitter ③ starts from T0, and uses the A1-B1 electrode to emit the current with frequency F, amplitude I and duration T, 4 channels of the receiver simultaneously measure the potential difference between the M1-N1, M2-N2, M3-N3 and M4-N4 groups of receiving electrodes, then after the interval time DeltaT, the transmitter ③ uses the A2-B2 electrode to emit the current with frequency F, amplitude I and duration T, 4 channels of the receiver simultaneously measure, and so on until the emission of 4 groups of emitting electrodes is completed.
The upper computer such as a mobile phone or a tablet computer can be connected with the transmitter ③ and the receiver in a wireless manner to acquire current data recorded by the transmitter ③, voltage data recorded by the receiver, coordinates of the transmitter ③ and the receiver, azimuth parameters of each electrode and the like. And the upper computer calculates and obtains data such as primary voltage, secondary voltage, device coefficient, apparent resistivity, apparent polarization rate and the like according to the acquired data. Through the process, the device can be used for completing the exploration of the multi-directional shallow resistivity method.
Because the transmitter ③ and the transmitting electrode set ① are integrated on the first bearing panel ④, and the receiver and the receiving electrode set are integrated on the second bearing panel, complicated cables are not required to be laid, and the manpower, material resources and workload of laying the shallow electric prospecting device are effectively reduced. In the acquisition process, the transmitter ③ firstly transmits current by using one transmitting electrode group ①, and after a period of time, the transmitter is switched to another transmitting electrode group ① to transmit current, and in the process, the receiver continuously acquires voltage signals of all receiving electrode groups. Therefore, each measuring point can measure multiple groups of data with different transmitting and receiving directions, and the influence of shallow three-dimensional electrical abnormal bodies and anisotropism is avoided in the later data processing and inversion. And because transmitter ③ and transmitting electrode group ① are integrated together on first loading panel ④, be convenient for adopt thick cable to link and connect transmitter ③ and transmitting electrode group ①, guarantee that transmitter ③ can be with great power to transmit, first loading panel ④ and second loading panel still can measure stable secondary voltage when the distance is far away like this, can obtain stable visual polarizability etc. and power excitation parameters.
The foregoing embodiments are merely for illustrating the technical solution of the present application, but not for limiting the same, and although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solution described in the foregoing embodiments may be modified or substituted for some of the technical features thereof, and that these modifications or substitutions should not depart from the spirit and scope of the technical solution of the embodiments of the present application and should be included in the protection scope of the present application.
Claims (9)
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