CN103018781A - 2-dimensional/3-dimensional nuclear magnetic resonance and transient electromagnetism combination instrument and field work method - Google Patents
2-dimensional/3-dimensional nuclear magnetic resonance and transient electromagnetism combination instrument and field work method Download PDFInfo
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- CN103018781A CN103018781A CN2012105445360A CN201210544536A CN103018781A CN 103018781 A CN103018781 A CN 103018781A CN 2012105445360 A CN2012105445360 A CN 2012105445360A CN 201210544536 A CN201210544536 A CN 201210544536A CN 103018781 A CN103018781 A CN 103018781A
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Abstract
The invention relates to a 2dimensional/3dimensional nuclear magnetic resonance and transient electromagnetism combination instrument and a field work method. A computer is connected with a transmitter through a transmitter communication interface, and connected with each receiver through a receiver communication interface, wherein the use number of the receivers depends on whether a detection mode is two-dimensional or three-dimensional, when the detection mode is two-dimensional, eight receivers are used, and when the detection mode is three-dimensional, sixty four receivers are used. A transmitting coil is connected with the transmitter through a transmitting coil interface, and a receiving coil of each receiver unit is connected with the receiver in the receiver unit where the receiving coil is located through a receiving coil interface. When used for detecting, the 2dimensional/3dimensional nuclear magnetic resonance and transient electromagnetism combination instrument can detect a detecting point respectively with methods of two-dimensional or three-dimensional nuclear magnetic resonance and transient electromagnetism on the premise of guaranteeing that conditions of the transmitting coil and the receiving coils remain unchanged, and therefore transverse resolution of detecting and distribution mapping accuracy of underground water bodies under a complex landform are improved effectively, and risk of digging a dry well is reduced effectively when a well position is delineated.
Description
Technical field
The present invention relates to a kind of geophysical prospecting equipment and method, especially realize simultaneously geophysical prospecting equipment and the method that nuclear magnetic resonance and transient electromagnetic are measured with two dimension or three-dimensional metering system.
Background technology
Nuclear magnetic resonance (MRS, Magnetic Resonance Sounding) detection method is present unique direct underground water detection method, and the transient electromagnetic method also can indirectly realize the detection to underground water resource by the resistivity of Underground medium.
At present, nuclear magnetic resonance water detection appratus device and the transient electromagnetic instrument of one dimension are widely used, yet, under the condition of complex landform, one-dimensional nuclear magnetic resonance water detection appratus device can not well play a role, with the coupling of transient electromagnetic instrument after, can increase the predictive ability to underground water distribution, two-dimentional or three-dimensional detection, can draw out more accurately X-Y scheme or three-dimensional plot that body of groundwater distributes, but an instrument can not realized nuclear magnetic resonance and two kinds of detection methods of transient electromagnetic by two dimension or three-dimensional metering system at present.
CN102096112 disclosed " based on nuclear magnetic resonance water detection appratus and the field detection method of array coil ", with the antenna of array coil as receiving element, and be independently receiving element of each antenna configuration, realization is schemed two dimension or the three-dimensional one-tenth of underground water distribution, thereby has improved the detection accuracy of nuclear magnetic resonance groundwater prospecting method on surface level.US7466128B2 disclosed " a kind of hyperchannel nuclear magnetic resonance collector and disposal route " adopts a coil to launch the metering system that a plurality of coils receive, and by the self-adapted noise elimination method, realizes the estimation of three-dimensional underground water density with the data of a plurality of passages.Above two kinds of methods, although can realize two dimension or three-dimensional Nuclear Magnetic Resonance Measurement,, under the complex landform condition, single magnetic nuclear resonance method can not be estimated underground water body distribution situation accurately.
CN1936621 disclosed " nuclear magnetic resonance and transient electromagnetic combined instrument and method thereof " realizes nuclear magnetic resonance and two kinds of detection methods of transient electromagnetic by an instrument.At first, use Transient Electromagnetic Technique and find out underground low resistance abnormity area, then, the using NMR technology is surveyed low resistance abnormity area, and final NMR imaging figure and transient electromagnetic image combined, explain the distribution of groundwater resource, can effectively improve by this method the estimated capacity to underground water body, but, the method can not realize two dimension or three-dimensional detection, this has just caused its horizontal detection resolution lower, when the delineation well location, exists the larger risk of beating dry-well.
Summary of the invention
Purpose of the present invention is exactly for above-mentioned the deficiencies in the prior art, a kind of instrument that can realize nuclear magnetic resonance and two kinds of detection methods of transient electromagnetic in same instrument is provided, and by two dimension or three-dimensional detection mode, improve the lateral resolution of the measurement that underground water body is distributed and the method for accuracy.
The objective of the invention is to realize in the following manner:
A kind of 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument, comprise computing machine, transmitter, transmitting coil, the 1st receiver, the 2nd receiver ... and even the 64th receiver, the 1st receiving coil, the 2nd receiving coil ... the 64th receiving coil, wherein, computing machine is connected with transmitter by the transmitter communication interface, and computing machine passes through receiver communication interface and the 1st receiver, the 2nd receiver ... and even the 64th receiver connects;
This combined instrument works in following two kinds of patterns :-nuclear magnetic resonance mode of operation: transmitter is connected with transmitting coil by nuclear magnetic resonance transmitting coil interface, and the 1st receiver passes through that the nuclear magnetic resonance receiving coil interface is connected with the 1st receiving coil, the 2nd receiver passes through the nuclear magnetic resonance receiving coil interface and is connected with the 2nd receiving coil ... and even the 64th receiver is connected with the 64th receiving coil by the nuclear magnetic resonance receiving coil interface;
-transient electromagnetic mode of operation: transmitter is connected with transmitting coil by transient electromagnetic transmitting coil interface, and the 1st receiver passes through that transient electromagnetic receiving coil interface is connected with the 1st receiving coil, the 2nd receiver passes through the nuclear magnetic resonance receiving coil interface and is connected with the 2nd receiving coil ... and even the 64th receiver is connected with the 64th receiving coil by the nuclear magnetic resonance receiving coil interface;
Wherein, the nuclear magnetic resonance mode of operation refers to only gather the pattern of NMR signal, and the transient electromagnetic mode of operation refers to only gather the pattern of transient electromagnetic signal.According to an aspect of the present invention, the invention provides a kind of structure of transmitter.Can also exist other structures to realize being used for the function of transmitter of the present invention in the prior art, and be not limited to this.In this structure, described transmitter comprises: nuclear magnetic resonance timing control unit, transmitter nuclear magnetic resonance synchronous acquisition interface, nuclear magnetic resonance emission bridge circuit, join humorous electric capacity, nuclear magnetic resonance transmitting coil interface, transient electromagnetic timing control unit, transmitter transient electromagnetic synchronous acquisition interface, transient electromagnetic emission bridge circuit, transient electromagnetic transmitting coil interface, transmitter communication interface and large power supply;
Wherein, the nuclear magnetic resonance timing control unit is connected with nuclear magnetic resonance emission bridge circuit by control line, the nuclear magnetic resonance timing control unit is connected with transmitter nuclear magnetic resonance synchronous acquisition interface by line synchro, nuclear magnetic resonance emission bridge circuit is connected with nuclear magnetic resonance transmitting coil interface through joining humorous electric capacity, the transient electromagnetic timing control unit is connected with transient electromagnetic emission bridge circuit by control line, the transient electromagnetic timing control unit is connected with transmitter transient electromagnetic synchronous acquisition interface by line synchro, transient electromagnetic emission bridge circuit is connected with transient electromagnetic transmitting coil interface, the transmitter communication interface is connected with the nuclear magnetic resonance timing control unit by Serial Port Line, the transmitter communication interface is connected with the transient electromagnetic timing control unit by Serial Port Line, the transmitter communication interface is connected with large power supply by Serial Port Line, large power supply is connected with nuclear magnetic resonance emission bridge circuit by power lead, and large power supply is connected with transient electromagnetic emission bridge circuit by power lead.
According to another aspect of the invention, the invention provides a kind of structure of receiver.Can also exist other structures to realize being used for the function of receiver of the present invention in the prior art, and be not limited to this.
In this structure, described the 1st receiver, the 2nd receiver ... and even the structure of the 64th receiver is identical, the structure of each receiver is specific as follows: comprise nuclear magnetic resonance receiving coil interface, bilateral diode, nuclear magnetic resonance amplifier, receiver nuclear magnetic resonance synchronous acquisition interface, receiver communication interface, Acquisition Circuit, transient electromagnetic receiving coil interface, transient electromagnetic amplifier and receiver transient electromagnetic synchronous acquisition interface, wherein
The nuclear magnetic resonance receiving coil interface is connected with bilateral diode by signal wire, bilateral diode is connected with the nuclear magnetic resonance amplifier by signal wire, the nuclear magnetic resonance amplifier is connected with Acquisition Circuit by signal wire, receiver nuclear magnetic resonance synchronous acquisition interface is connected with Acquisition Circuit by line synchro, transient electromagnetic receiving coil interface is connected with the transient electromagnetic amplifier by signal wire, the transient electromagnetic amplifier is connected with Acquisition Circuit by signal wire, receiver transient electromagnetic synchronous acquisition interface is connected with Acquisition Circuit by line synchro, the receiver communication interface is connected with the nuclear magnetic resonance amplifier by Serial Port Line, the receiver communication interface is connected with the transient electromagnetic amplifier by Serial Port Line, and the receiver communication interface is connected with Acquisition Circuit by Serial Port Line.
According to a further aspect in the invention, the invention provides a kind of outdoor operation method according to above-mentioned 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument, comprise the steps:
A, laying transmitting coil, and be connected to nuclear magnetic resonance transmitting coil interface;
B, determine that measurement pattern is two-dimensional measurement pattern or for the three-dimensional measurement pattern; If the two-dimensional detection pattern is then only used 8 receiving elements, with these 8 horizontal equidistant placement of receiving element on the center line of transmitting coil, 4 receiving elements of transmitting coil internal placement, 4 receiving elements of transmitting coil disposed outside; If the three-dimensional detection pattern then needs 64 receiving elements, these 64 receiving elements are symmetrical in the transmitting coil central point, the equidistant inside that is arranged in transmitting coil is with outside; At last, the receiving coil of employed each receiving element is connected to the nuclear magnetic resonance receiving coil interface of each receiving element receiver;
C, 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument are switched to the nuclear magnetic resonance working method, running parameter is set, select two dimension or three-dimensional measurement pattern according to the measurement pattern of determining, carry out Nuclear Magnetic Resonance Measurement one time;
D, guaranteeing under the constant condition of transmitting coil and each receiving element receiving coil transmitting coil to be connected to transient electromagnetic transmitting coil interface, receiving coil is connected to the transient electromagnetic receiving coil interface of each receiving element receiver;
E, 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument are switched to the transient electromagnetic working method, running parameter is set, select two dimension or three-dimensional measurement pattern according to the measurement pattern of determining, carry out a transient electromagnetic and measure;
F, the nuclear magnetic resonance data that gathers and transient electromagnetic data are carried out data are processed and joint inversion is explained, draw out and survey district's two dimension or three-dimensional map of groundwater table picture.
Beneficial effect: 2D/3D nuclear magnetic resonance of the present invention and transient electromagnetic combined instrument, use an instrument, can realize the detection of two kinds of methods, make things convenient for field test, by two dimension or three-dimensional detection mode, but Effective Raise is to lateral resolution and the accuracy of the measurement of underground water body distribution, and, explain two dimension or the three-dimensional map of groundwater table picture of drawing out by joint inversion, can effectively determine well location, reduce the risk of beating dry-well.
Description of drawings
Fig. 1 is 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument structured flowchart
Fig. 2 is 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument transmitter block diagram
Fig. 3 is 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument receiver block diagram
Fig. 4 is 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument receiving element schematic diagram
Fig. 5 is 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument two-dimensional detection pattern diagram
Fig. 6 is 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument three-dimensional detection pattern diagram
1 computing machine, 2 transmitters, 3 transmitting coils, 30 the 1st receivers, 31 the 2nd receivers, 93 the 64th receivers, 94 the 1st receiving coils, 95 the 2nd receiving coils, 157 the 64th receiving coils, 10 nuclear magnetic resonance timing control units, 11 transmitter nuclear magnetic resonance synchronous acquisition interfaces, 12 nuclear magnetic resonance emission bridge circuit, 13 join humorous electric capacity, 14 nuclear magnetic resonance transmitting coil interfaces, 15 transient electromagnetic timing control units, 16 transmitter transient electromagnetic synchronous acquisition interfaces, 17 transient electromagnetics emission bridge circuit, 18 transient electromagnetic transmitting coil interfaces, 19 transmitter communication interfaces, 20 large power supplies, 21 nuclear magnetic resonance receiving coil interfaces, 22 bilateral diodes, 23 nuclear magnetic resonance amplifiers, 24 receiver nuclear magnetic resonance synchronous acquisition interfaces, 25 receiver communication interfaces, 26 Acquisition Circuit, 27 transient electromagnetic receiving coil interfaces, 28 transient electromagnetic amplifiers, 29 receiver transient electromagnetic sync caps.
Embodiment
Be described in further detail below in conjunction with accompanying drawing 1-6 and each embodiment:
Computing machine 1 is connected with transmitter 2 by transmitter communication interface 19, and computing machine 1 passes through receiver communication interface 25 and the first receiver 30, the second receiver 31 ... and even the 64th receiver 93 connects.
-nuclear magnetic resonance mode of operation: transmitter 2 is connected with transmitting coil 3 by nuclear magnetic resonance transmitting coil interface 14, and the 1st receiver 30 passes through that nuclear magnetic resonance receiving coil interface 21 is connected with the 1st receiving coil 94, the 2nd receiver 31 passes through nuclear magnetic resonance receiving coil interface 21 and is connected with the 2nd receiving coil 95 ... and even the 64th receiver 93 is connected with the 64th receiving coil 157 by nuclear magnetic resonance receiving coil interface 21.
-transient electromagnetic mode of operation: transmitter 2 is connected with transmitting coil 3 by transient electromagnetic transmitting coil interface 18, and the 1st receiver 30 passes through that transient electromagnetic receiving coil interface 27 is connected with the 1st receiving coil 94, the 2nd receiver 31 passes through nuclear magnetic resonance receiving coil interface 27 and is connected with the 2nd receiving coil 95 ... and even the 64th receiver 93 is connected with the 64th receiving coil 157 by nuclear magnetic resonance receiving coil interface 27.
2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument, by the following method step work:
Computing machine 1 is connected with transmitter 2 by transmitter communication interface 19, by sending controling instruction, transmitter is switched between nuclear magnetic resonance and two kinds of measurement patterns of transient electromagnetic, and according to the work that arranges of expecting; Computing machine 1 is by receiver communication interface 25 and the first receiver 30, the second receiver 31 ... and even the 64th receiver 93 connects, each receiver is switched between nuclear magnetic resonance and two kinds of measurement patterns of transient electromagnetic, various running parameters are set, and the control receiver carries out data acquisition and receives the data of receiver passback;
-nuclear magnetic resonance mode of operation: transmitter 2 is connected with transmitting coil 3 by nuclear magnetic resonance transmitting coil interface 14, makes in the transmitting coil 3 and produces excitation current, then the required magnetic field that excites during the generation Nuclear Magnetic Resonance Measurement in the space; The 1st receiver 30 by nuclear magnetic resonance receiving coil interface 21 be connected with the 1st receiving coil 94, the 2nd receiver 31 passes through nuclear magnetic resonance receiving coil interface 21 and is connected with the 2nd receiving coil 95 ... and even the 64th receiver 93 is connected with the 64th receiving coil 157 by nuclear magnetic resonance receiving coil interface 21, by this connected mode, make each receiver all receive NMR signal;
-transient electromagnetic mode of operation: transmitter 2 is connected with transmitting coil 3 by transient electromagnetic transmitting coil interface 19, makes in the transmitting coil 3 and produces excitation current, then required generation Primary field during the measurement of generation transient electromagnetic in the space; The 1st receiver 30 by transient electromagnetic receiving coil interface 27 be connected with the 1st receiving coil 94, the 2nd receiver 31 passes through transient electromagnetic receiving coil interface 27 and is connected with the 2nd receiving coil 95 ... and even the 64th receiver 93 is connected with the 64th receiving coil 157 by transient electromagnetic receiving coil interface 27, by this connected mode, make each receiver all receive the transient electromagnetic signal;
Nuclear magnetic resonance timing control unit 10 is connected with nuclear magnetic resonance emission bridge circuit 12 by control line, produces nuclear magnetic resonance emission bridge circuit 12 needed clock signal when emission; Nuclear magnetic resonance timing control unit 10 is connected with transmitter nuclear magnetic resonance synchronous acquisition interface 11 by line synchro, produces the synchronously synchronizing signal of each receiver nuclear magnetic resonance acquisition time; Nuclear magnetic resonance emission bridge circuit 12 is connected with nuclear magnetic resonance transmitting coil interface 14 through joining humorous electric capacity 13, and humorous to make the electric current in transmitting coil 3 be sinusoidal wave transmitter current by joining; Transient electromagnetic timing control unit 15 is connected with transient electromagnetic emission bridge circuit 17 by control line, produces transient electromagnetic emission bridge circuit 17 needed clock signal when emission; Transient electromagnetic timing control unit 15 is connected with transmitter transient electromagnetic synchronous acquisition interface 16 by line synchro, produces the synchronously synchronizing signal of each receiver transient electromagnetic acquisition time; Transient electromagnetic emission bridge circuit 17 is connected with transient electromagnetic transmitting coil interface 18, is used for producing the required electric current of primary field under the output transient electromagnetic pattern; Transmitter communication interface 19 is connected with nuclear magnetic resonance timing control unit 10 by Serial Port Line, the control signal of transmission control nuclear magnetic resonance timing control unit 10 working methods; Transmitter communication interface 19 is connected with transient electromagnetic timing control unit 15 by Serial Port Line, the control signal of transmission control transient electromagnetic timing control unit 15 working methods; Transmitter communication interface 19 is connected with large power supply 20 by Serial Port Line, and transmission arranges the control signal of large power supply 20 output voltage values; Large power supply 20 is connected by power lead and nuclear magnetic resonance emission bridge circuit 12, transmission nuclear magnetic resonance bridge circuit 12 required high-power voltage when launching; Large power supply 20 is connected by power lead and transient electromagnetic emission bridge circuit 17, transmission transient electromagnetic bridge circuit 17 required high-power voltage when launching;
Nuclear magnetic resonance receiving coil interface 21 is connected with bilateral diode 22 by signal wire, makes the input voltage absolute value be no more than 0.7V; Bilateral diode 22 is connected with nuclear magnetic resonance amplifier 23 by signal wire, the NMR signal of output behind bilateral diode 22; Nuclear magnetic resonance amplifier 23 is connected with Acquisition Circuit 26 by signal wire, after the nuclear magnetic resonance amplifier is to signal conditions such as signal amplification, filtering, signal is carried out data acquisition; Receiver nuclear magnetic resonance synchronous acquisition interface 24 is connected with Acquisition Circuit 26 by line synchro, the synchronous acquisition signal of receiver/transmitter nuclear magnetic resonance synchronous acquisition interface 11 outputs, so that when the Nuclear Magnetic Resonance Measurement mode, each receiver synchronous acquisition NMR signal; Transient electromagnetic receiving coil interface 27 is connected with transient electromagnetic amplifier 28 by signal wire, makes in the transient electromagnetic signal input transient electromagnetic amplifier 28 that receives to carry out signal condition; Transient electromagnetic amplifier 28 is connected with Acquisition Circuit 26 by signal wire, and the transient electromagnetic signal behind signal condition is carried out data acquisition; Receiver transient electromagnetic synchronous acquisition interface 29 is connected with Acquisition Circuit 26 by line synchro, the synchronous acquisition signal of receiver/transmitter transient electromagnetic synchronous acquisition interface 16 outputs, so that when the transient electromagnetic metering system, each receiver synchronous acquisition transient electromagnetic signal; Receiver communication interface 25 is connected with nuclear magnetic resonance amplifier 23 by Serial Port Line, under the transmission Nuclear Magnetic Resonance Measurement pattern to the control command of nuclear magnetic resonance amplifier 23; Receiver communication interface 25 is connected with transient electromagnetic amplifier 28 by Serial Port Line, under the transmission transient electromagnetic measurement pattern to the control command of transient electromagnetic amplifier 28; Receiver communication interface 25 is connected with Acquisition Circuit 26 by Serial Port Line, the data that the control command of 1 pair of Acquisition Circuit 26 of transmission computing machine and Acquisition Circuit return to the collection of computing machine 1.
2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument outdoor operation method:
A, laying transmitting coil 3, and be connected to nuclear magnetic resonance transmitting coil interface 14.
B, determine that measurement pattern is two-dimensional measurement pattern or for the three-dimensional measurement pattern.If the two-dimensional detection pattern is then only used 8 receiving elements, with these 8 horizontal equidistant placement of receiving element on the center line of transmitting coil, 4 receiving elements of transmitting coil 3 internal placement, 4 receiving elements of transmitting coil 3 disposed outside; If the three-dimensional detection pattern then needs 64 receiving elements, these 64 receiving elements are symmetrical in transmitting coil 3 central points, the equidistant inside that is arranged in transmitting coil 3 is with outside.At last, the receiving coil of employed each receiving element is connected to the nuclear magnetic resonance receiving coil interface 21 of each receiving element receiver.
C, 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument are switched to the nuclear magnetic resonance working method, running parameter is set, select two dimension or three-dimensional measurement pattern according to the measurement pattern of determining, carry out Nuclear Magnetic Resonance Measurement one time.
D, guaranteeing under the constant condition of transmitting coil 3 and each receiving element receiving coil transmitting coil 3 to be connected to transient electromagnetic transmitting coil interface 18, receiving coil is connected to the transient electromagnetic receiving coil interface 27 of each receiving element receiver.
E, 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument are switched to the transient electromagnetic working method, running parameter is set, select two dimension or three-dimensional measurement pattern according to the measurement pattern of determining, carry out a transient electromagnetic and measure.
F, the nuclear magnetic resonance data that gathers and transient electromagnetic data are carried out data are processed and joint inversion is explained, draw out and survey district's two dimension or three-dimensional map of groundwater table picture.
Embodiment 1
Computing machine 1 is connected with transmitter 2 by transmitter communication interface 19, and computing machine 1 passes through receiver communication interface 25 and the 1st receiver 30, the 2nd receiver 31 ... and even the 64th receiver 93 connects.
-nuclear magnetic resonance mode of operation: transmitter 2 is connected with transmitting coil 3 by nuclear magnetic resonance transmitting coil interface 14, and the 1st receiver 30 passes through that nuclear magnetic resonance receiving coil interface 21 is connected with the 1st receiving coil 94, the 2nd receiver 31 passes through nuclear magnetic resonance receiving coil interface 21 and is connected with the 2nd receiving coil 95 ... and even the 64th receiver 93 is connected with the 64th receiving coil 157 by nuclear magnetic resonance receiving coil interface 21.
-transient electromagnetic mode of operation: transmitter 2 is connected with transmitting coil 3 by transient electromagnetic transmitting coil interface 18, and the 1st receiver 30 passes through that transient electromagnetic receiving coil interface 27 is connected with the 1st receiving coil 94, the 2nd receiver 31 passes through nuclear magnetic resonance receiving coil interface 27 and is connected with the 2nd receiving coil 95 ... and even the 64th receiver 93 is connected with the 64th receiving coil 157 by nuclear magnetic resonance receiving coil interface 27.
2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument two-dimensional measurement mode outdoor operation method:
A, laying transmitting coil 3, and be connected to nuclear magnetic resonance transmitting coil interface 14.
B, when the two-dimensional measurement mode, only use 8 receiving elements, the receiving coil of these 8 receiving elements is laid with the two-dimensional detection pattern, and is connected to the nuclear magnetic resonance receiving coil interface 21 of each receiving element receiver.
C, 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument are switched to the nuclear magnetic resonance working method, running parameter is set, the two-dimensional detection pattern is set, carry out Nuclear Magnetic Resonance Measurement one time.
D, guaranteeing under the constant condition of transmitting coil 3 and each receiving element receiving coil transmitting coil 3 to be connected to transient electromagnetic transmitting coil interface 18, receiving coil is connected to the transient electromagnetic receiving coil interface 27 of each receiving element receiver.
E, 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument are switched to the transient electromagnetic working method, running parameter is set, the two-dimensional detection pattern is set, carry out a transient electromagnetic and measure.
F, the nuclear magnetic resonance data that gathers and transient electromagnetic data are carried out data are processed and joint inversion is explained, draw out the map of groundwater table picture of surveying district's two dimension.
Embodiment 2
Computing machine 1 is connected with transmitter 2 by transmitter communication interface 19, and computing machine 1 passes through receiver communication interface 25 and the 1st receiver 30, the 2nd receiver 31 ... and even the 64th receiver 93 connects.
-nuclear magnetic resonance mode of operation: transmitter 2 is connected with transmitting coil 3 by nuclear magnetic resonance transmitting coil interface 14, and the 1st receiver 30 passes through that nuclear magnetic resonance receiving coil interface 21 is connected with the 1st receiving coil 94, the 2nd receiver 31 passes through nuclear magnetic resonance receiving coil interface 21 and is connected with the 2nd receiving coil 95 ... and even the 64th receiver 93 is connected with the 64th receiving coil 157 by nuclear magnetic resonance receiving coil interface 21.
-transient electromagnetic mode of operation: transmitter 2 is connected with transmitting coil 3 by transient electromagnetic transmitting coil interface 18, and the 1st receiver 30 passes through that transient electromagnetic receiving coil interface 27 is connected with the 1st receiving coil 94, the 2nd receiver 31 passes through nuclear magnetic resonance receiving coil interface 27 and is connected with the 2nd receiving coil 95 ... and even the 64th receiver 93 is connected with the 64th receiving coil 157 by nuclear magnetic resonance receiving coil interface 27.
2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument three-dimensional measurement mode outdoor operation method:
A, laying transmitting coil 3, and be connected to nuclear magnetic resonance transmitting coil interface 14.
B, when the three-dimensional measurement mode, use 64 receiving elements, the receiving coil of these 64 receiving elements is laid with the three-dimensional detection pattern, and is connected to the nuclear magnetic resonance receiving coil interface 21 of each receiving element receiver.
C, 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument are switched to the nuclear magnetic resonance working method, running parameter is set, the three-dimensional detection pattern is set, carry out Nuclear Magnetic Resonance Measurement one time.
D, guaranteeing under the constant condition of transmitting coil 3 and each receiving element receiving coil transmitting coil 3 to be connected to transient electromagnetic transmitting coil interface 18, receiving coil is connected to the transient electromagnetic receiving coil interface 27 of each receiving element receiver.
E, 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument are switched to the transient electromagnetic working method, running parameter is set, the three-dimensional detection pattern is set, carry out a transient electromagnetic and measure.
F, the nuclear magnetic resonance data that gathers and transient electromagnetic data are carried out data are processed and joint inversion is explained, draw out and survey the three-dimensional map of groundwater table picture in district.
Claims (4)
1. a 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument, it is characterized in that, comprise computing machine (1), transmitter (2), transmitting coil (3), the 1st receiver (30), the 2nd receiver (31) ... and even the 64th receiver (93), the 1st receiving coil (94), the 2nd receiving coil (95) ... the 64th receiving coil (157), wherein, computing machine (1) is connected with transmitter (2) by transmitter communication interface (19), and computing machine (1) is by receiver communication interface (25) and the 1st receiver (30), the 2nd receiver (31) ... and even the 64th receiver (93) connects; This combined instrument works in following two kinds of patterns:
---the nuclear magnetic resonance mode of operation: transmitter (2) is connected with transmitting coil (3) by nuclear magnetic resonance transmitting coil interface (14), and the 1st receiver (30) passes through that nuclear magnetic resonance receiving coil interface (21) is connected with the 1st receiving coil (94), the 2nd receiver (31) passes through nuclear magnetic resonance receiving coil interface (21) and is connected with the 2nd receiving coil (95) ... and even the 64th receiver (93) is connected with the 64th receiving coil (157) by nuclear magnetic resonance receiving coil interface (21);
---the transient electromagnetic mode of operation: transmitter (2) is connected with transmitting coil (3) by transient electromagnetic transmitting coil interface (18), and the 1st receiver (30) passes through that transient electromagnetic receiving coil interface (27) is connected with the 1st receiving coil (94), the 2nd receiver (31) passes through nuclear magnetic resonance receiving coil interface (27) and is connected with the 2nd receiving coil (95) ... and even the 64th receiver (93) is connected with the 64th receiving coil (157) by nuclear magnetic resonance receiving coil interface (27);
Wherein, the nuclear magnetic resonance mode of operation refers to only gather the pattern of NMR signal, and the transient electromagnetic mode of operation refers to only gather the pattern of transient electromagnetic signal.
2. a 2D/3D nuclear magnetic resonance according to claim 1 and transient electromagnetic combined instrument, it is characterized in that, described transmitter (2) comprising: nuclear magnetic resonance timing control unit (10), transmitter nuclear magnetic resonance synchronous acquisition interface (11), nuclear magnetic resonance emission bridge circuit (12), join humorous electric capacity (13), nuclear magnetic resonance transmitting coil interface (14), transient electromagnetic timing control unit (15), transmitter transient electromagnetic synchronous acquisition interface (16), transient electromagnetic emission bridge circuit (17), transient electromagnetic transmitting coil interface (18), transmitter communication interface (19) and large power supply (20); Wherein, nuclear magnetic resonance timing control unit (10) is connected with nuclear magnetic resonance emission bridge circuit (12) by control line, nuclear magnetic resonance timing control unit (10) is connected with transmitter nuclear magnetic resonance synchronous acquisition interface (11) by line synchro, nuclear magnetic resonance emission bridge circuit (12) is connected with nuclear magnetic resonance transmitting coil interface (14) through joining humorous electric capacity (13), transient electromagnetic timing control unit (15) is connected with transient electromagnetic emission bridge circuit (17) by control line, transient electromagnetic timing control unit (15) is connected with transmitter transient electromagnetic synchronous acquisition interface (16) by line synchro, transient electromagnetic emission bridge circuit (17) is connected with transient electromagnetic transmitting coil interface (18), transmitter communication interface (19) is connected with nuclear magnetic resonance timing control unit (10) by Serial Port Line, transmitter communication interface (19) is connected with transient electromagnetic timing control unit (15) by Serial Port Line, transmitter communication interface (19) is connected with large power supply (20) by Serial Port Line, large power supply (20) is connected with nuclear magnetic resonance emission bridge circuit (12) by power lead, and large power supply (20) is connected with transient electromagnetic emission bridge circuit (17) by power lead.
3. a 2D/3D nuclear magnetic resonance according to claim 1 and transient electromagnetic combined instrument, it is characterized in that, described the 1st receiver (4), the 2nd receiver (5) ... and even the structure of the 64th receiver (6) is identical, the structure of each receiver is specific as follows: comprise nuclear magnetic resonance receiving coil interface (21), bilateral diode (22), nuclear magnetic resonance amplifier (23), receiver nuclear magnetic resonance synchronous acquisition interface (24), receiver communication interface (25), Acquisition Circuit (26), transient electromagnetic receiving coil interface (27), transient electromagnetic amplifier (28) and receiver transient electromagnetic synchronous acquisition interface (29), wherein
Nuclear magnetic resonance receiving coil interface (21) is connected with bilateral diode (22) by signal wire, bilateral diode (22) is connected with nuclear magnetic resonance amplifier (23) by signal wire, nuclear magnetic resonance amplifier (23) is connected with Acquisition Circuit (26) by signal wire, receiver nuclear magnetic resonance synchronous acquisition interface (24) is connected with Acquisition Circuit (26) by line synchro, transient electromagnetic receiving coil interface (27) is connected with transient electromagnetic amplifier (28) by signal wire, transient electromagnetic amplifier (28) is connected with Acquisition Circuit (26) by signal wire, receiver transient electromagnetic synchronous acquisition interface (29) is connected with Acquisition Circuit (26) by line synchro, receiver communication interface (25) is connected with nuclear magnetic resonance amplifier (23) by Serial Port Line, receiver communication interface (25) is connected with transient electromagnetic amplifier (28) by Serial Port Line, and receiver communication interface (25) is connected with Acquisition Circuit (26) by Serial Port Line.
4. the outdoor operation method of a 2D/3D nuclear magnetic resonance according to claim 1 and transient electromagnetic combined instrument is characterized in that, comprises the steps:
A, laying transmitting coil (3), and be connected to nuclear magnetic resonance transmitting coil interface (14);
B, determine that measurement pattern is two-dimensional measurement pattern or for the three-dimensional measurement pattern; If the two-dimensional detection pattern is then only used 8 receiving elements, with these 8 horizontal equidistant placement of receiving element on the center line of transmitting coil, 4 receiving elements of transmitting coil (3) internal placement, 4 receiving elements of transmitting coil (3) disposed outside; If the three-dimensional detection pattern then needs 64 receiving elements, these 64 receiving elements are symmetrical in transmitting coil (3) central point, the equidistant inside that is arranged in transmitting coil (3) is with outside; At last, the receiving coil of employed each receiving element is connected to the nuclear magnetic resonance receiving coil interface (21) of each receiving element receiver;
C, 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument are switched to the nuclear magnetic resonance working method, running parameter is set, select two dimension or three-dimensional measurement pattern according to the measurement pattern of determining, carry out Nuclear Magnetic Resonance Measurement one time;
D, guaranteeing under the constant condition of transmitting coil (3) and each receiving element receiving coil, transmitting coil (3) is connected to transient electromagnetic transmitting coil interface (18), and receiving coil is connected to the transient electromagnetic receiving coil interface (27) of each receiving element receiver;
E, 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument are switched to the transient electromagnetic working method, running parameter is set, select two dimension or three-dimensional measurement pattern according to the measurement pattern of determining, carry out a transient electromagnetic and measure;
F, the nuclear magnetic resonance data that gathers and transient electromagnetic data are carried out data are processed and joint inversion is explained, draw out and survey district's two dimension or three-dimensional map of groundwater table picture.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103809206A (en) * | 2014-03-11 | 2014-05-21 | 吉林大学 | Underground water detection device and detection method based on combination of nuclear magnetic resonance and transient electromagnetic method |
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| CN104280780A (en) * | 2014-10-28 | 2015-01-14 | 吉林大学 | Nuclear magnetic resonance and transient electromagnetic combination instrument and work method |
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| CN103809206A (en) * | 2014-03-11 | 2014-05-21 | 吉林大学 | Underground water detection device and detection method based on combination of nuclear magnetic resonance and transient electromagnetic method |
| CN103809206B (en) * | 2014-03-11 | 2017-08-25 | 吉林大学 | Nuclear magnetic resonance and transient electromagnetic combined use underground water detection device and detection method |
| CN103852794A (en) * | 2014-03-27 | 2014-06-11 | 吉林大学 | Hydrocarbon polluted shallow groundwater magnetic resonance detection device and hydrocarbon polluted shallow groundwater magnetic resonance detection method |
| CN104297807A (en) * | 2014-09-06 | 2015-01-21 | 吉林大学 | Magnetic resonance imaging device for underground disaster water source detection and detection and imaging method |
| CN104297807B (en) * | 2014-09-06 | 2017-04-26 | 吉林大学 | Magnetic resonance imaging device for underground disaster water source detection and detection and imaging method |
| CN104280780B (en) * | 2014-10-28 | 2016-08-17 | 吉林大学 | Nuclear magnetic resonance and transient electromagnetic combined instrument and method of work |
| CN104280780A (en) * | 2014-10-28 | 2015-01-14 | 吉林大学 | Nuclear magnetic resonance and transient electromagnetic combination instrument and work method |
| CN105510983A (en) * | 2015-12-25 | 2016-04-20 | 武汉地大华睿地学技术有限公司 | Electromagnetic-method early-warning system for safety monitoring and electromagnetic-method early-warning method |
| CN105717544A (en) * | 2016-04-26 | 2016-06-29 | 吉林大学 | Transient electromagnetic emitting-receiving system for real-time acquisition-storage and data mapping explanation |
| CN105717544B (en) * | 2016-04-26 | 2018-03-23 | 吉林大学 | The transient electromagnetic emitting-receiving system that collection storage in real time and data are released into diagram |
| CN106154341A (en) * | 2016-06-21 | 2016-11-23 | 山东大学 | A kind of nuclear magnetic resonance, NMR and transient electromagnetic integrative detection instrument and method of work |
| CN107203008A (en) * | 2017-04-20 | 2017-09-26 | 武汉地大华睿地学技术有限公司 | A kind of metallic conduit detecting system and method based on transient electromagnetic method |
| CN107203008B (en) * | 2017-04-20 | 2019-02-01 | 武汉地大华睿地学技术有限公司 | A kind of metallic conduit detection system and method based on transient electromagnetic method |
| CN116953803A (en) * | 2023-08-22 | 2023-10-27 | 中南大学 | Abnormal body information processing method and coil sensor device applied by same |
| CN116953803B (en) * | 2023-08-22 | 2024-05-14 | 中南大学 | Abnormal body information processing method and coil sensor device applied by same |
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