CN104407392A - One-transmitting and three-receiving type detection device for water filling goaf, and detection method - Google Patents
One-transmitting and three-receiving type detection device for water filling goaf, and detection method Download PDFInfo
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- CN104407392A CN104407392A CN201410756382.0A CN201410756382A CN104407392A CN 104407392 A CN104407392 A CN 104407392A CN 201410756382 A CN201410756382 A CN 201410756382A CN 104407392 A CN104407392 A CN 104407392A
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Abstract
The invention relates to a one-transmitting and three-receiving type detection device for a water filling goaf and a detection method. A transmitter is formed by connecting a transmitting upper computer with a power supply controller, a boost module, an energy storage capacitor, an H bridge circuit, a transmitting coil, current detecting circuits, a transmission controller, a sequential controller, a driving circuit and an H bridge circuit. A receiver adopts a structure that a receiving upper computer is respectively connected with an amplifier x, an amplifier y and an amplifier z through acquisition of signal, the amplifier x is connected with a receiving coil x, the amplifier y is connected with a receiving coil y, and the amplifier z is connected with a receiving coil z. Compared with the conventional detection method, the concrete direction of water in the goaf is precisely positioned in a placement way of three mutually perpendicular receiving directions; first-time measurement can realize three-dimensional spatial orientation of water, and second-time measurement can accurately position the concrete position of water, so that the detection efficiency and precision is greatly improved, human, physical and financial resources and time are saved, and possible geological disasters such as water inrush and mud gushing can be quickly forecasted.
Description
Technical field
The present invention relates to a kind of nuclear magnetic resonance principle that utilizes and carry out the geophysical exploration method detected, especially one utilizes " one three receipts " three receiving coils to realize the pinpoint detection method to full-water goaf in the mode that three-dimensional is vertical mutually based on nuclear magnetic resonance water witch.
Background technology:
Mineral products are as a kind of important resource, what its exploitation was formed adopts the empty reason due to history, mostly effectively administer, one of potential geologic hazard that goaf produces as mankind's activity, serious threat is caused to the safety in production in mine, engineering construction and the people's lives and property.Especially part goaf by the underground water in later stage or surface water be full of some abandoned-mine water of being formed, if time the subsurface excavation engineering in later stage touches this goaf water coastal waters, this part goaf water will with burst suddenly into mode pour in down-hole, cause some paroxysmal water damage accidents.Therefore for alleviating and preventing the geologic hazard that caused by Goaf Area, forward probe is carried out to it and has very important significance.
CN201051151 discloses a kind of nuclear magnetic resonance water witch, and controlled to form with register system three part by emission coefficient, receiving system, microcomputer, DC/DC transducer one end connects battery, and the other end connects superpower accumulator; Superpower accumulator is connected with high power AC square-wave generator, and be provided with K switch 1 in the middle of it, high power AC square-wave generator is also connected with resonance frequency generator, K switch 2, K3; K switch 2 be connected in series transmitting coil and join humorous Capacitor banks between K3; K3, K4 connect ultra-low noise amplifier respectively, join dependency detecting amplifier again, tie geophone and phase detectors again, wave detector connects A/D converter and connected with computer controls and register system, and phase detectors are connected with resonance frequency generator and A/D converter and connected with computer controls and register system.But although the nuclear magnetic resonance analyser of this invention and method thereof have higher measuring accuracy, spot measurement is accurate, but there is a deficiency, that be exactly a measurement point can only obtain whether there is water (such as 100m*100m coil measurement area is 10,000 square metres) within the scope of very large one, be difficult to the accurate location realizing water body.
CN102221711A discloses and relates to a kind of advanced prediction device for tunnel water inrush by using nuclear magnetic resonance differential detection and detection method.By computing machine through main control unit, launch driving circuit and transmitting bridge respectively with high-voltage power supply, join humorous electric capacity and launching and receiving volume coil is connected; the protection of reception multiturn coil two ends second is opened, secondary signal modulate circuit is connected with multichannel collecting circuit; computing machine is connected with the first protection switch and the second protection switch respectively through main control unit, and the first protection switch connects and composes through the first signal conditioning circuit and multichannel collecting circuit and secondary signal modulate circuit.Receive volume coil and be vertically contained in (top) on the left of measuring point, receive multiturn coil and be vertically contained in right side (below).Although this invention can locate water body, water body location can only be carried out based on the left and right of coil or up and down, the particular location of water body can not be determined.
Summary of the invention:
Object of the present invention is just for above-mentioned the deficiencies in the prior art, provides a kind of three receipts formulas to the sniffer of full-water goaf;
Another object of the present invention is to provide a kind of three receipts formulas to the sniffer of full-water goaf and detection method.
The object of the invention is to be achieved through the following technical solutions:
Receive formula to the sniffer of full-water goaf for one three, comprise Receiver And Transmitter, described transmitter connects Energy control MCU 3, DC-DC boost module 6, storage capacitor 7, H bridge road 11 by transmitting host computer 1 through connection, joins humorous electric capacity 10, transmitting coil 9, current detection circuit 5, current detecting MCU 2, emission control MCU 4, Control timing sequence 8, driving circuit 12 and H bridge road 11 and form.
Described receiver connects amplifier x 15, amplifier y 16 and amplifier z 17 by reception host computer 13 respectively through signals collecting 14, amplifier x 15 connects receiving coil x 18, amplifier y 16 meets receiving coil y 19, and amplifier z 17 and receiving coil z 20 connect and compose.
Receiving coil x 18, receiving coil y 19 and receiving coil z 20 vertical runs mutually.
Control timing sequence 8 and signals collecting 14 synchronizing signal.
Receive formula to the detection method of the sniffer of full-water goaf, comprise the following steps for one three:
A, survey district in select sensing point, centered by sensing point, lay square emitter coil 9 on the ground, mine is inner and three orthogonal receiving coil x 18, receiving coil y 19 and receiving coil z 20 and amplifier x 15 supporting with it, amplifier y 16 and amplifier z 17 are laid in the below of corresponding transmitting coil, transmitter is connected with the synchronous cable of receiver;
The detection system of b, unlatching nuclear magnetic resonance water witch, emission control MCU4 produces Control timing sequence 8, by driving circuit 12 control H bridge road 11, via the exchange current of joining humorous electric capacity 10 and to feed to transmitting coil 9 Larmor frequency, Energy control MCU 3 changes the size of H bridge road 11 output current in transmitting coil 9 through DC-DC boost module 6, storage capacitor 7, namely change the size of excitation pulse square, thus excite the water body of underground different depth;
C, Control timing sequence 8 control signal collection 14 start to gather the signal in receiving coil x18, receiving coil y 19 and receiving coil z 20 3 road receiving coil after transmitting terminates 35ms, the NMR signal of collection is delivered to host computer 13 and stores;
D, the receiving coil x 18 of preservation, receiving coil y 19 and receiving coil z 20 3 tunnel NMR signal are carried out characteristic parameter extraction, obtain three groups of different or identical relaxation times, initial amplitude, frequency parameter;
E, carry out data inversion process according to three groups of relaxation times, initial amplitude, frequency parameter, calculate three groups of water cut, permeability hydrogeological parameter;
F, just can be known the orientation of water body by the contrast of these three groups of water cut, permeability hydrogeological parameter information.
G, by receiving system entirety move the distance of 20m along arbitrary direction of principal axis in x, y, z three axle, repeat b, c, d, step e second time obtain three groups of relaxation times, initial amplitude, frequency parameter and water cut, permeabilities.Primary three groups of Water-Body Informations are combined with secondary three groups of Water-Body Informations, just can obtain the particular location of water body.
Beneficial effect: compared with existing detection method, adopt and receive the concrete direction that three-dimensional modes of emplacement vertical mutually accurately can locate goaf water body, have that detection accuracy is high, efficiency is high simultaneously, than the information more comprehensively obtaining water body, human and material resources, financial resources, the advantage of time can be saved.Receiving coil is placed in the mode that three-dimensional is vertical mutually, the three dimensions that one-shot measurement just can realize water body is directed, double measurement just can locate the particular location of water body accurately, greatly improve efficiency and the precision of detection, save human and material resources, financial resources, time, can fast for contingent gushing water, gush the geologic hazards such as mud and to furnish a forecast foundation.
Accompanying drawing illustrates:
Receive formula to the sniffer transmitter architecture figure of full-water goaf for Fig. 1: one three.
Receive formula to the sniffer receiver structure figure of full-water goaf for Fig. 2: one three.
Receive formula to the sniffer launching and receiving synchronization structure figure of full-water goaf for Fig. 3: one three.
Receive sniffer three the receiving coils on-the-spot artwork of formula to full-water goaf for Fig. 4: one three.
1 launches host computer, 2 current detecting MCU, 3 Energy control MCU, 4 emission control, 5 current detection circuits, 6DC-DC boost module, 7 storage capacitors, 8 Control timing sequence, 9 transmitting coils, 10 join humorous electric capacity, 11H bridge road, 12 driving circuits, 13 receive host computer, 14 signals collecting, 15 amplifier x, 16 amplifier Y, 17 amplifier z, 18 receiving coil x, 19 receiving coil y, 20 receiving coil z.
Embodiment:
Below in conjunction with drawings and Examples, this is described in further detail:
Receive formula to the sniffer of full-water goaf for one three, comprise Receiver And Transmitter, described transmitter connects Energy control MCU 3, DC-DC boost module 6, storage capacitor 7, H bridge road 11 by transmitting host computer 1 through connection, joins humorous electric capacity 10, transmitting coil 9, current detection circuit 5, current detecting MCU 2, emission control MCU 4, Control timing sequence 8, driving circuit 12 and H bridge road 11 and form.
Described receiver connects amplifier x 15, amplifier y 16 and amplifier z 17 by reception host computer 13 respectively through signals collecting 14, amplifier x 15 connects receiving coil x 18, amplifier y 16 meets receiving coil y 19, and amplifier z 17 and receiving coil z 20 connect and compose.
Receiving coil x 18, receiving coil y 19 and receiving coil z 20 vertical runs mutually.
Control timing sequence 8 and signals collecting 14 synchronizing signal.
Receive formula to the detection method of the sniffer of full-water goaf, comprise the following steps for one three:
A, survey district in select sensing point, centered by sensing point, lay square emitter coil 9 on the ground, mine is inner and three orthogonal receiving coil x 18, receiving coil y 19 and receiving coil z 20 and amplifier x 15 supporting with it, amplifier y 16 and amplifier z 17 are laid in the below of corresponding transmitting coil, transmitter is connected with the synchronous cable of receiver;
The detection system of b, unlatching nuclear magnetic resonance water witch, emission control MCU4 produces Control timing sequence 8, by driving circuit 12 control H bridge road 11, via the exchange current of joining humorous electric capacity 10 and to feed to transmitting coil 9 Larmor frequency, Energy control MCU 3 changes the size of H bridge road 11 output current in transmitting coil 9 through DC-DC boost module 6, storage capacitor 7, namely change the size of excitation pulse square, thus excite the water body of underground different depth;
C, Control timing sequence 8 control signal collection 14 start to gather the signal in receiving coil x18, receiving coil y 19 and receiving coil z 20 3 road receiving coil after transmitting terminates 35ms, the NMR signal of collection is delivered to host computer 13 and stores;
D, the receiving coil x 18 of preservation, receiving coil y 19 and receiving coil z 20 3 tunnel NMR signal are carried out characteristic parameter extraction, obtain three groups of different or identical relaxation times, initial amplitude, frequency parameter;
E, carry out data inversion process according to three groups of relaxation times, initial amplitude, frequency parameter, calculate three groups of water cut, permeability hydrogeological parameter;
F, just can be known the orientation of water body by the contrast of these three groups of water cut, permeability hydrogeological parameter information.
G, by overall for receiving system along x-axis, y-axis or z-axis three in axle arbitrary direction of principal axis move the distance of 20m, repeat b, c, d, step e second time obtain three groups of relaxation times, initial amplitude, frequency parameter and water cut, permeabilities.Primary three groups of Water-Body Informations are combined with secondary three groups of Water-Body Informations, just can obtain the particular location of water body.
The sniffer transmitter of Fig. 1 three receipts formulas to full-water goaf is connected with current detecting MCU 2 by communication cable by host computer 1, host computer 1 is connected with Energy control MCU 3 by communication cable, Energy control MCU 3 is connected with H bridge road 11 by DC-DC boost module 6, storage capacitor 7, host computer 1 is connected with emission control MCU 4 by communication cable, emission control MCU 4 by Control timing sequence 8, driving circuit 12, H bridge road 11, join humorous electric capacity 10, transmitting coil 9, current detection circuit 5 connect and compose with current detecting MCU 2.
Fig. 2 three receipts formulas are connected with host computer 13 through amplifier x 15, signals collecting 14 by receiving coil x 18 the sniffer receiver of full-water goaf, receiving coil y 19 is connected with host computer 13 through amplifier y 16, signals collecting 14, and receiving coil z 20 connects and composes with host computer 13 through amplifier z 17, signals collecting 14.
Fig. 3 receiver is connected and composed by Control timing sequence 8 and signals collecting 14 with synchronous between transmitter.
The orthogonal laying mode of Fig. 4 receiving coil x 18, receiving coil y 19 and receiving coil z 20 triple coil.
Embodiment 1:
A, survey district in select detection place, to detect centered by place, lay square emitter coil 9 on the ground, in mine, three mutual vertical receiving coil x18, receiving coil y19 and receiving coil z 20 and supporting amplifier x15, amplifier y16 and amplifier z17 are laid in the below of corresponding transmitting coil 9, are connected by transmitter with the synchronous cable of receiver;
The detection system of b, unlatching nuclear magnetic resonance water witch, emission control MCU4 produces Control timing sequence 8 and in transmitting coil, feeds via joining humorous electric capacity the exchange current that frequency is Larmor frequency by driving circuit 12 control H bridge road 11, Energy control MCU 3 changes the size of H bridge road 11 output current in transmitting coil 9 through DC-DC boost module 6, storage capacitor 7, namely change the size of excitation pulse square, thus excite the water body of underground different depth;
C, Control timing sequence 8 control signal collection 14 start to gather the signal in three road receiving coils after transmitting terminates 35ms, the NMR signal of collection is delivered to host computer 13 and stores;
D, the receiving coil x 18 of preservation, receiving coil y 19 and receiving coil z 20 3 tunnel NMR signal are carried out characteristic parameter extraction, obtain three groups of relaxation times, initial amplitude, frequency parameter;
E, carry out data inversion process according to three groups of relaxation times, initial amplitude, frequency parameter, calculate three groups of water cut, permeability hydrogeological parameter;
F, contrast by three stack features parameters, if receive the signal initial amplitude obtained substantially do not have difference, so, water body one fixes on the body diagonal of the determined square of triple coil;
G, receiving system entirety is moved the distance of 20m along the x-axis direction, repeat b, c, d, step e second time obtain three groups of relaxation times, initial amplitude, frequency parameter and water cut, permeabilities.Primary three groups of Water-Body Informations are combined with secondary three groups of Water-Body Informations, just can obtain the particular location of water body.
Embodiment 2:
A, survey district in select detection place, to detect centered by place, lay square emitter coil 9 on the ground, in mine, three mutual vertical receiving coil x18, receiving coil y19 and receiving coil z 20 and supporting amplifier x15, amplifier y16 and amplifier z17 are laid in the below of corresponding transmitting coil 9, are connected by transmitter with the synchronous cable of receiver;
The detection system of b, unlatching nuclear magnetic resonance water witch, emission control MCU4 produces Control timing sequence 8 and in transmitting coil, feeds via joining humorous electric capacity the exchange current that frequency is Larmor frequency by driving circuit 12 control H bridge road 11, Energy control MCU 3 changes the size of H bridge road 11 output current in transmitting coil 9 through DC-DC boost module 6, storage capacitor 7, namely change the size of excitation pulse square, thus excite the water body of underground different depth;
C, Control timing sequence 8 control signal collection 14 start to gather the signal in three road receiving coils after transmitting terminates 35ms, the NMR signal of collection is delivered to host computer 13 and stores;
D, by said extracted preserve three tunnel NMR signal carry out characteristic parameter extraction, obtain three groups of relaxation times, initial amplitude, frequency parameter;
E, carry out data inversion process according to three groups of relaxation times, initial amplitude, frequency parameter, calculate three groups of water cut, permeability hydrogeological parameter;
F, contrast by three stack features parameters, suppose that the signal initial amplitude size of now x, y both direction is identical and minimum, and z direction initial amplitude is maximum, so, now water body one fixes in z-axis;
G, receiving system entirety is moved the distance of 20m along the y-axis direction, repeat b, c, d, step e second time obtain three groups of relaxation times, initial amplitude, frequency parameter and water cut, permeabilities.Primary three groups of Water-Body Informations are combined with secondary three groups of Water-Body Informations, just can obtain the concrete orientation of water body.
Embodiment 3
Detection place is selected in survey district, to detect centered by place, lay square emitter coil 9 on the ground, in mine, three mutual vertical receiving coil x18, receiving coil y19 and receiving coil z 20 and supporting amplifier x15, amplifier y16 and amplifier z17 are laid in the below of corresponding transmitting coil 9, are connected by transmitter with the synchronous cable of receiver;
The detection system of b, unlatching nuclear magnetic resonance water witch, emission control MCU4 produces Control timing sequence 8 and in transmitting coil, feeds via joining humorous electric capacity the exchange current that frequency is Larmor frequency by driving circuit 12 control H bridge road 11, Energy control MCU 3 changes the size of H bridge road 11 output current in transmitting coil 9 through DC-DC boost module 6, storage capacitor 7, namely change the size of excitation pulse square, thus excite the water body of underground different depth;
C, Control timing sequence 8 control signal collection 14 start to gather the signal in three road receiving coils after transmitting terminates 35ms, the NMR signal of collection are delivered to host computer and store;
D, by said extracted preserve three tunnel NMR signal carry out characteristic parameter extraction, obtain three groups of relaxation times, initial amplitude, frequency parameter;
E, carry out data inversion process according to three groups of relaxation times, initial amplitude, frequency parameter, calculate three groups of water cut, permeability hydrogeological parameter;
F, contrast by three stack features parameters, suppose that the signal initial amplitude size in now x, y, z three directions is different, so, now water body one is positioned in the body of the determined square of triple coil;
G, receiving system entirety is moved the distance of 20m along the z-axis direction, repeat b, c, d, step e, second time obtains three groups of relaxation times, initial amplitude, frequency parameter and water cut, permeabilities.Primary three groups of Water-Body Informations are combined with secondary three groups of Water-Body Informations, just can obtain the concrete orientation of water body.
Claims (5)
1. receive formula to the sniffer of full-water goaf for one kind one three, comprise Receiver And Transmitter, it is characterized in that: transmitter connects Energy control MCU 3, DC-DC boost module 6, storage capacitor 7, H bridge road 11 by transmitting host computer 1 through connection, joins humorous electric capacity 10, transmitting coil 9, current detection circuit 5, current detecting MCU 2, emission control MCU 4, Control timing sequence 8, driving circuit 12 and H bridge road 11 and form.
2. receive formula to the sniffer of full-water goaf according to one three according to claim 1, it is characterized in that, receiver connects amplifier x 15, amplifier y16 and amplifier z 17 by reception host computer 13 respectively through signals collecting 14, amplifier x 15 connects receiving coil x 18, amplifier y 16 meets receiving coil y 19, and amplifier z 17 and receiving coil z 20 connect and compose.
3. receive formula to the sniffer of full-water goaf according to one three according to claim 1, it is characterized in that, receiving coil x 18, receiving coil y 19 and receiving coil z 20 vertical runs mutually.
4. receive formula to the sniffer of full-water goaf according to one three according to claim 1, it is characterized in that, Control timing sequence 8 and signals collecting 14 synchronizing signal.
5. receive formula to a detection method for the sniffer of full-water goaf for one three, it is characterized in that, comprise the following steps:
A, survey district in select sensing point, centered by sensing point, lay square emitter coil 9 on the ground, mine is inner and three orthogonal receiving coil x 18, receiving coil y 19 and receiving coil z 20 and amplifier x 15 supporting with it, amplifier y 16 and amplifier z 17 are laid in the below of corresponding transmitting coil, transmitter is connected with the synchronous cable of receiver;
The detection system of b, unlatching nuclear magnetic resonance water witch, emission control MCU4 produces Control timing sequence 8, by driving circuit 12 control H bridge road 11, via the exchange current of joining humorous electric capacity 10 and to feed to transmitting coil 9 Larmor frequency, Energy control MCU 3 changes the size of H bridge road 11 output current in transmitting coil 9 through DC-DC boost module 6, storage capacitor 7, namely change the size of excitation pulse square, thus excite the water body of underground different depth;
C, Control timing sequence 8 control signal collection 14 start to gather the signal in receiving coil x18, receiving coil y 19 and receiving coil z 20 3 road receiving coil after transmitting terminates 35ms, the NMR signal of collection are delivered to reception host computer 13 and store;
D, the receiving coil x 18 of preservation, receiving coil y 19 and receiving coil z 20 3 tunnel NMR signal are carried out characteristic parameter extraction, obtain three groups of different or identical relaxation times, initial amplitude, frequency parameter;
E, carry out data inversion process according to three groups of relaxation times, initial amplitude, frequency parameter, calculate three groups of water cut, permeability hydrogeological parameter;
F, just know the orientation of water body by the contrast of these three groups of water cut, permeability hydrogeological parameter information;
G, by receiving system entirety move the distance of 20m along arbitrary direction of principal axis in x, y, z three axle, repeat b, c, d, step e second time obtain three groups of relaxation times, initial amplitude, frequency parameter and water cut, permeabilities.Primary three groups of Water-Body Informations are combined with secondary three groups of Water-Body Informations, just can obtain the particular location of water body.
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| CN107102368A (en) * | 2017-05-02 | 2017-08-29 | 吉林大学 | A kind of closed-loop control near-earth water source exploration device and detection method |
| CN107966737A (en) * | 2017-11-24 | 2018-04-27 | 吉林大学 | Active field nuclear magnetic resonance detection device and detection method |
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| CN107102368A (en) * | 2017-05-02 | 2017-08-29 | 吉林大学 | A kind of closed-loop control near-earth water source exploration device and detection method |
| CN107102368B (en) * | 2017-05-02 | 2018-11-20 | 吉林大学 | A kind of closed-loop control near-earth water source exploration device and detection method |
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Application publication date: 20150311 |