CN103018781B - 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument and outdoor operation method - Google Patents
2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument and outdoor operation method Download PDFInfo
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Abstract
The present invention relates to a kind of 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument and outdoor operation method, wherein, computing machine is connected with transmitter by transmitter communication interface, be connected with each receiver by receiver communication interface, the use number of receiver is decided by two dimension or three-dimensional detection pattern, 8 receivers are used during two-dimensional detection pattern, 64 receivers are used during three-dimensional detection pattern, transmitting coil is connected with transmitter by transmitting coil interface, and the receiving coil in each receiving element is connected by receiving coil interface with the receiver in its place receiving element.When detecting, when ensureing that the condition of transmitting coil, receiving coil is constant, measuring point is carried out respectively to magnetic nuclear resonance method detection and the transient electromagnetic method detection of two dimension or three-dimensional, effectively improve the lateral resolution of detection and body of groundwater under complex landform be scattered in the accuracy of figure, during delineation well location, effectively reducing the risk of beating dry-well.<!--1-->
Description
Technical field
The present invention relates to a kind of geophysical prospecting equipment and method, especially realize geophysical prospecting equipment and the method for nuclear magnetic resonance and Transient electromagnetic measure with two dimension or three-dimensional metering system simultaneously.
Background technology
Nuclear magnetic resonance (MRS, MagneticResonanceSounding) detection method is direct underground water detection method unique at present, transient electromagnetic method, by the resistivity of Underground medium, also indirectly can realize the detection to groundwater resource.
At present, the nuclear magnetic resonance underground water detection instrument of one dimension and transient electromagnetic apparatus are widely used, but, under the condition of complex landform, one-dimensional nuclear magnetic resonance water detection appratus device can not well play a role, with transient electromagnetic apparatus coupling after, the predictive ability to groundwater occurrence can be increased, two-dimentional or three-dimensional detection, X-Y scheme or the three-dimensional plot of body of groundwater distribution can be drawn out more accurately, but, an instrument can not realize nuclear magnetic resonance and transient electromagnetic two kinds of detection methods by two dimension or three-dimensional metering system at present.
CN102096112 disclosed " nuclear magnetic resonance underground water detection instrument and field detection method based on array coil ", with the antenna of array coil as receiving element, and be each antenna configuration independently receiving element, realize the two dimension to groundwater occurrence or three-dimensional one-tenth figure, thus improve nuclear magnetic resonance groundwater prospecting method detection accuracy in the horizontal plane.US7466128B2 disclosed " a kind of hyperchannel nuclear magnetic resonance collector and disposal route ", adopts the metering system that a multiple coil of coil transmissions receives, and by self-adapted noise elimination method, realizes by the data of multiple passage the estimation dimensionally descending water-mass density.Above two kinds of methods, although the Nuclear Magnetic Resonance Measurement of two dimension or three-dimensional can be realized, under complex landform condition, single magnetic nuclear resonance method can not be estimated body of groundwater distribution situation accurately.
CN1936621 disclosed " nuclear magnetic resonance and transient electromagnetic combined instrument and method " thereof, realizes nuclear magnetic resonance and transient electromagnetic two kinds of detection methods by an instrument.First, application Transient Electromagnetic Technique finds out low resistance abnormity area, underground, then, using NMR technology detects low resistance abnormity area, and final NMR imaging figure and transient electromagnetic image are combined, explain the distribution of groundwater resource, effectively can improve the estimated capacity to body of groundwater by this method, but, the method can not realize the detection of two dimension or three-dimensional, the horizontal detection resolution which results in it is lower, when drawing a circle to approve well location, there is the larger risk of beating dry-well.
Summary of the invention
Object 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 transient electromagnetic two kinds of detection methods in same instrument is provided, and by two dimension or three-dimensional detection mode, improve the lateral resolution of measurement to body of groundwater distribution and the method for accuracy.
The object 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 ... 64th receiving coil, wherein, computing machine is connected with transmitter by transmitter communication interface, and computing machine is by 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 is connected with the 1st receiving coil by nuclear magnetic resonance receiving coil interface, the 2nd receiver is connected with the 2nd receiving coil by nuclear magnetic resonance receiving coil interface ... and even the 64th receiver is connected with the 64th receiving coil by nuclear magnetic resonance receiving coil interface;
-transient electromagnetic mode of operation: transmitter 2 is connected with transmitting coil 3 by transient electromagnetic transmitting coil interface 18, the 1st receiver 30 is connected with the 1st receiving coil 94 by transient electromagnetic receiving coil interface 27, the 2nd receiver 31 is connected with the 2nd receiving coil 95 by transient electromagnetic receiving coil interface 27 ... and even the 64th receiver 93 is connected with the 64th receiving coil 157 by transient electromagnetic receiving coil interface 27.
Wherein, nuclear magnetic resonance mode of operation refers to the pattern only gathering NMR signal, and transient electromagnetic mode of operation refers to the pattern only gathering transient electromagnetic signal.According to an aspect of the present invention, the invention provides a kind of structure of transmitter.The function of other structures realization for transmitter of the present invention can also be there is in prior art, and be not limited thereto.In such an embodiment, described transmitter comprises: nuclear magnetic resonance timing control unit, transmitter nuclear magnetic resonance synchronous acquisition interface, nuclear magnetic resonance transmitting bridge, join humorous electric capacity, nuclear magnetic resonance transmitting coil interface, transient electromagnetic timing control unit, transmitter transient electromagnetic synchronous acquisition interface, transient electromagnetic transmitting bridge, transient electromagnetic transmitting coil interface, transmitter communication interface and large power supply;
Wherein, nuclear magnetic resonance timing control unit is connected with nuclear magnetic resonance transmitting bridge by control line, nuclear magnetic resonance timing control unit is connected with transmitter nuclear magnetic resonance synchronous acquisition interface by line synchro, nuclear magnetic resonance transmitting bridge is connected with nuclear magnetic resonance transmitting coil interface through joining humorous electric capacity, transient electromagnetic timing control unit is connected with transient electromagnetic transmitting bridge by control line, transient electromagnetic timing control unit is connected with transmitter transient electromagnetic synchronous acquisition interface by line synchro, transient electromagnetic transmitting bridge is connected with transient electromagnetic transmitting coil interface, transmitter communication interface is connected with nuclear magnetic resonance timing control unit by Serial Port Line, transmitter communication interface is connected with transient electromagnetic timing control unit by Serial Port Line, transmitter communication interface is connected with large power supply by Serial Port Line, large power supply is connected with nuclear magnetic resonance transmitting bridge by power lead, large power supply is connected with transient electromagnetic transmitting bridge by power lead.
According to another aspect of the invention, the invention provides a kind of structure of receiver.The function of other structures realization for receiver of the present invention can also be there is in prior art, and be not limited thereto.
In such an embodiment, described 1st receiver, 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, nuclear magnetic resonance receiving coil interface is connected with bilateral diode by signal wire, bilateral diode is connected with nuclear magnetic resonance amplifier by signal wire, 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 transient electromagnetic amplifier by signal wire, 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, receiver communication interface is connected with nuclear magnetic resonance amplifier by Serial Port Line, receiver communication interface is connected with transient electromagnetic amplifier by Serial Port Line, 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 three-dimensional measurement pattern; If two-dimensional detection pattern, then only use 8 receiving elements, by horizontal for these 8 receiving elements equidistant placement on the center line of transmitting coil, transmitting coil internal placement 4 receiving elements, transmitting coil disposed outside 4 receiving elements; If three-dimensional detection pattern, then need 64 receiving elements, these 64 receiving elements are symmetrical in transmitting coil central point, the equidistant inside being arranged in transmitting coil is with outside; Finally, the receiving coil of used 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 nuclear magnetic resonance working method, running parameter is set, select two dimension or three-dimensional measurement pattern according to the measurement pattern determined, carry out a Nuclear Magnetic Resonance Measurement;
D, guaranteeing that under transmitting coil and the constant condition of each receiving element receiving coil, transmitting coil is 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 transient electromagnetic working method, running parameter is set, select two dimension or three-dimensional measurement pattern according to the measurement pattern determined, carry out a Transient electromagnetic measure;
F, data processing and joint inversion are carried out to the nuclear magnetic resonance data gathered and transient electromagnetic data explain, draw out and survey district's two dimension or three-dimensional groundwater occurrence image.
Beneficial effect: 2D/3D nuclear magnetic resonance of the present invention and transient electromagnetic combined instrument, use an instrument, the detection of two kinds of methods can be realized, facilitate field test, by two dimension or three-dimensional detection mode, effectively can improve the lateral resolution to the measurement of body of groundwater distribution and accuracy, and, that is drawn out by joint inversion explanation descends water distribution image two-dimensional or three-dimensional, effectively can determine well location, reduces the risk of beating dry-well.
Accompanying drawing explanation
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 transmitting bridge, 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 electromagnetic transmitting bridge, 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 is by receiver communication interface 25 and the first receiver 30, 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, the 1st receiver 30 is connected with the 1st receiving coil 94 by nuclear magnetic resonance receiving coil interface 21, the 2nd receiver 31 is connected with the 2nd receiving coil 95 by nuclear magnetic resonance receiving coil interface 21 ... 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, the 1st receiver 30 is connected with the 1st receiving coil 94 by transient electromagnetic receiving coil interface 27, the 2nd receiver 31 is connected with the 2nd receiving coil 95 by transient electromagnetic receiving coil interface 27 ... and even the 64th receiver 93 is connected with the 64th receiving coil 157 by transient electromagnetic receiving coil interface 27.
2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument, step work by the following method:
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 transient electromagnetic two kinds of measurement patterns, and arranges work according to what expect; Computing machine 1 is by receiver communication interface 25 and the first receiver 30, second receiver 31 ... and even the 64th receiver 93 connects, each receiver is switched between nuclear magnetic resonance and transient electromagnetic two kinds of measurement patterns, various running parameter is set, controls the data that receiver carries out data acquisition and receives 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 to produce excitation current in transmitting coil 3, requiredly when then producing Nuclear Magnetic Resonance Measurement in space excites magnetic field; 1st receiver 30 is connected with the 1st receiving coil 94 by nuclear magnetic resonance receiving coil interface 21, the 2nd receiver 31 is connected with the 2nd receiving coil 95 by nuclear magnetic resonance receiving coil interface 21 ... 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, each receiver is made all to receive NMR signal;
-transient electromagnetic mode of operation: transmitter 2 is connected with transmitting coil 3 by transient electromagnetic transmitting coil interface 19, makes to produce excitation current in transmitting coil 3, required generation Primary field when then producing Transient electromagnetic measure in space; 1st receiver 30 is connected with the 1st receiving coil 94 by transient electromagnetic receiving coil interface 27, the 2nd receiver 31 is connected with the 2nd receiving coil 95 by transient electromagnetic receiving coil interface 27 ... 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, each receiver is made all to receive transient electromagnetic signal;
Nuclear magnetic resonance timing control unit 10 is connected with nuclear magnetic resonance transmitting bridge 12 by control line, produces the clock signal that nuclear magnetic resonance transmitting bridge 12 is required when launching; Nuclear magnetic resonance timing control unit 10 is connected with transmitter nuclear magnetic resonance synchronous acquisition interface 11 by line synchro, produces the synchronizing signal of synchronous each receiver nuclear magnetic resonance acquisition time; Nuclear magnetic resonance transmitting bridge 12 is connected with nuclear magnetic resonance transmitting coil interface 14 through joining humorous electric capacity 13, humorously makes 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 transmitting bridge 17 by control line, produces the clock signal that transient electromagnetic transmitting bridge 17 is required when launching; Transient electromagnetic timing control unit 15 is connected with transmitter transient electromagnetic synchronous acquisition interface 16 by line synchro, produces the synchronizing signal of synchronous each receiver transient electromagnetic acquisition time; Transient electromagnetic transmitting bridge 17 is connected with transient electromagnetic transmitting coil interface 18, for producing the electric current needed for primary field under exporting transient electromagnetic pattern; Transmitter communication interface 19 is connected with nuclear magnetic resonance timing control unit 10 by Serial Port Line, and transmission controls the control signal of nuclear magnetic resonance timing control unit 10 working method; Transmitter communication interface 19 is connected with transient electromagnetic timing control unit 15 by Serial Port Line, and transmission controls the control signal of transient electromagnetic timing control unit 15 working method; 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 with nuclear magnetic resonance transmitting bridge 12 by power lead, the high-power voltage that transmission nuclear magnetic resonance bridge road 12 is required when launching; Large power supply 20 is connected with transient electromagnetic transmitting bridge 17 by power lead, the high-power voltage that transmission transient electrical magnetic bridge road 17 is required when launching;
Nuclear magnetic resonance receiving coil interface 21 is connected with bilateral diode 22 by signal wire, makes input voltage absolute value be no more than 0.7V; Bilateral diode 22 is connected with nuclear magnetic resonance amplifier 23 by signal wire, exports the NMR signal after bilateral diode 22; Nuclear magnetic resonance amplifier 23 is connected with Acquisition Circuit 26 by signal wire, through nuclear magnetic resonance amplifier to after the signal conditions such as signal amplification, filtering, carries out data acquisition to signal; Receiver nuclear magnetic resonance synchronous acquisition interface 24 is connected with Acquisition Circuit 26 by line synchro, the synchronous acquisition signal that receiver/transmitter nuclear magnetic resonance synchronous acquisition interface 11 exports, so that when 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 to carry out signal condition in the transient electromagnetic signal input transient electromagnetic amplifier 28 received; Transient electromagnetic amplifier 28 is connected with Acquisition Circuit 26 by signal wire, carries out data acquisition to the transient electromagnetic signal after signal condition; Receiver transient electromagnetic synchronous acquisition interface 29 is connected with Acquisition Circuit 26 by line synchro, the synchronous acquisition signal that receiver/transmitter transient electromagnetic synchronous acquisition interface 16 exports, so that when Transient electromagnetic measure mode, each receiver synchronous acquisition transient electromagnetic signal; Receiver communication interface 25 is connected with nuclear magnetic resonance amplifier 23 by Serial Port Line, the control command to nuclear magnetic resonance amplifier 23 under transmission Nuclear Magnetic Resonance Measurement pattern; Receiver communication interface 25 is connected with transient electromagnetic amplifier 28 by Serial Port Line, the control command to transient electromagnetic amplifier 28 under transmission Transient electromagnetic measure pattern; Receiver communication interface 25 is connected with Acquisition Circuit 26 by Serial Port Line, and the control command of transmission computing machine 1 pair of Acquisition Circuit 26 and Acquisition Circuit return to the data of 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 three-dimensional measurement pattern.If two-dimensional detection pattern, then only use 8 receiving elements, by horizontal for these 8 receiving elements equidistant placement on the center line of transmitting coil, transmitting coil 3 internal placement 4 receiving elements, transmitting coil 3 disposed outside 4 receiving elements; If three-dimensional detection pattern, then need 64 receiving elements, these 64 receiving elements are symmetrical in transmitting coil 3 central point, the equidistant inside being arranged in transmitting coil 3 is with outside.Finally, the receiving coil of used 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 nuclear magnetic resonance working method, running parameter is set, select two dimension or three-dimensional measurement pattern according to the measurement pattern determined, carry out a Nuclear Magnetic Resonance Measurement.
D, guaranteeing that under transmitting coil 3 and the constant condition of each receiving element receiving coil, transmitting coil 3 is 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 transient electromagnetic working method, running parameter is set, select two dimension or three-dimensional measurement pattern according to the measurement pattern determined, carry out a Transient electromagnetic measure.
F, data processing and joint inversion are carried out to the nuclear magnetic resonance data gathered and transient electromagnetic data explain, draw out and survey district's two dimension or three-dimensional groundwater occurrence image.
Embodiment 1
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.
-nuclear magnetic resonance mode of operation: transmitter 2 is connected with transmitting coil 3 by nuclear magnetic resonance transmitting coil interface 14, the 1st receiver 30 is connected with the 1st receiving coil 94 by nuclear magnetic resonance receiving coil interface 21, the 2nd receiver 31 is connected with the 2nd receiving coil 95 by nuclear magnetic resonance receiving coil interface 21 ... 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, the 1st receiver 30 is connected with the 1st receiving coil 94 by transient electromagnetic receiving coil interface 27, the 2nd receiver 31 is connected with the 2nd receiving coil 95 by transient electromagnetic receiving coil interface 27 ... and even the 64th receiver 93 is connected with the 64th receiving coil 157 by transient electromagnetic 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 two-dimensional measurement mode, only use 8 receiving elements, the receiving coil of these 8 receiving elements is laid with 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 nuclear magnetic resonance working method, running parameter is set, two-dimensional detection pattern is set, carry out a Nuclear Magnetic Resonance Measurement.
D, guaranteeing that under transmitting coil 3 and the constant condition of each receiving element receiving coil, transmitting coil 3 is 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 transient electromagnetic working method, running parameter is set, two-dimensional detection pattern is set, carry out a Transient electromagnetic measure.
F, data processing and joint inversion are carried out to the nuclear magnetic resonance data gathered and transient electromagnetic data explain, draw out the groundwater occurrence image surveying district's two dimension.
Embodiment 2
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.
-nuclear magnetic resonance mode of operation: transmitter 2 is connected with transmitting coil 3 by nuclear magnetic resonance transmitting coil interface 14, the 1st receiver 30 is connected with the 1st receiving coil 94 by nuclear magnetic resonance receiving coil interface 21, the 2nd receiver 31 is connected with the 2nd receiving coil 95 by nuclear magnetic resonance receiving coil interface 21 ... 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, the 1st receiver 30 is connected with the 1st receiving coil 94 by transient electromagnetic receiving coil interface 27, the 2nd receiver 31 is connected with the 2nd receiving coil 95 by transient electromagnetic receiving coil interface 27 ... and even the 64th receiver 93 is connected with the 64th receiving coil 157 by transient electromagnetic 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 three-dimensional measurement mode, use 64 receiving elements, the receiving coil of these 64 receiving elements is laid with 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 nuclear magnetic resonance working method, running parameter is set, three-dimensional detection pattern is set, carry out a Nuclear Magnetic Resonance Measurement.
D, guaranteeing that under transmitting coil 3 and the constant condition of each receiving element receiving coil, transmitting coil 3 is 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 transient electromagnetic working method, running parameter is set, three-dimensional detection pattern is set, carry out a Transient electromagnetic measure.
F, data processing and joint inversion are carried out to the nuclear magnetic resonance data gathered and transient electromagnetic data explain, draw out the groundwater occurrence image surveying district's three-dimensional.
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), 1st receiver (30), 2nd receiver (31) ... and even the 64th receiver (93), 1st receiving coil (94), 2nd receiving coil (95) ... 64th receiving coil (157), wherein, computing machine (1) is connected with transmitter (2) by transmitter communication interface (19), computing machine (1) is by receiver communication interface (25) and the 1st receiver (30), 2nd receiver (31) ... and even the 64th receiver (93) connects, this combined instrument works in following two kinds of patterns:
---nuclear magnetic resonance mode of operation: transmitter (2) is connected with transmitting coil (3) by nuclear magnetic resonance transmitting coil interface (14), the 1st receiver (30) is connected with the 1st receiving coil (94) by nuclear magnetic resonance receiving coil interface (21), the 2nd receiver (31) is connected with the 2nd receiving coil (95) by nuclear magnetic resonance receiving coil interface (21) ... 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), the 1st receiver (30) is connected with the 1st receiving coil (94) by transient electromagnetic receiving coil interface (27), the 2nd receiver (31) is connected with the 2nd receiving coil (95) by transient electromagnetic receiving coil interface (27) ... and even the 64th receiver (93) is connected with the 64th receiving coil (157) by transient electromagnetic receiving coil interface (27);
Wherein, nuclear magnetic resonance mode of operation refers to the pattern only gathering NMR signal, and transient electromagnetic mode of operation refers to the pattern only gathering transient electromagnetic signal;
Two-dimensional measurement pattern and three-dimensional measurement pattern are determined as required; The working method of 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument switches as required; Both nuclear magnetic resonance working method can switch to transient electromagnetic working method, and transient electromagnetic working method also can switch to nuclear magnetic resonance working method;
Determine that measurement pattern is two-dimensional measurement pattern or is three-dimensional measurement pattern; If two-dimensional detection pattern, then only use 8 receivers and receiving coil, by horizontal to these 8 receivers and receiving coil equidistant placement on the center line of transmitting coil, transmitting coil (3) internal placement 4 receivers and receiving coil, transmitting coil (3) disposed outside 4 receivers and receiving coil; If three-dimensional detection pattern, then need 64 receivers and receiving coil, these 64 receivers and receiving coil are symmetrical in transmitting coil (3) central point, the equidistant inside being arranged in transmitting coil (3) is with outside; Finally, used each receiving coil is connected to the nuclear magnetic resonance receiving coil interface (21) of each receiver.
2. 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 transmitting bridge (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 transmitting bridge (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 transmitting bridge (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 transmitting bridge (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 transmitting bridge (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 transmitting bridge (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 transmitting bridge (12) by power lead, large power supply (20) is connected with transient electromagnetic transmitting bridge (17) by power lead.
3. 2D/3D nuclear magnetic resonance according to claim 1 and transient electromagnetic combined instrument, it is characterized in that, described 1st receiver (30), 2nd receiver (31) ... and even the structure of the 64th receiver (93) 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, receiver communication interface (25) is connected with Acquisition Circuit (26) by Serial Port Line.
4. the outdoor operation method of 2D/3D nuclear magnetic resonance according to claim 1 and transient electromagnetic combined instrument, is characterized in that, comprise 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 three-dimensional measurement pattern; If two-dimensional detection pattern, then only use 8 receivers and receiving coil, by horizontal to these 8 receivers and receiving coil equidistant placement on the center line of transmitting coil, transmitting coil (3) internal placement 4 receivers and receiving coil, transmitting coil (3) disposed outside 4 receivers and receiving coil; If three-dimensional detection pattern, then need 64 receivers and receiving coil, these 64 receivers and receiving coil are symmetrical in transmitting coil (3) central point, the equidistant inside being arranged in transmitting coil (3) is with outside; Finally, used each receiving coil is connected to the nuclear magnetic resonance receiving coil interface (21) of each receiver;
C, 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument are switched to nuclear magnetic resonance working method, running parameter is set, select two dimension or three-dimensional measurement pattern according to the measurement pattern determined, carry out a Nuclear Magnetic Resonance Measurement;
D, guaranteeing under transmitting coil (3) and the constant condition of each 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 receiver;
E, 2D/3D nuclear magnetic resonance and transient electromagnetic combined instrument are switched to transient electromagnetic working method, running parameter is set, select two dimension or three-dimensional measurement pattern according to the measurement pattern determined, carry out a Transient electromagnetic measure;
F, data processing and joint inversion are carried out to the nuclear magnetic resonance data gathered and transient electromagnetic data explain, draw out and survey district's two dimension or three-dimensional groundwater occurrence image.
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| CN103852794B (en) * | 2014-03-27 | 2017-01-25 | 吉林大学 | Hydrocarbon polluted shallow groundwater magnetic resonance detection device and hydrocarbon polluted shallow groundwater magnetic resonance detection 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 |
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