CN103064121A - Underground construction water burst source advance geology forecast three-dimensional focus induced polarization equipment - Google Patents
Underground construction water burst source advance geology forecast three-dimensional focus induced polarization equipment Download PDFInfo
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Abstract
The invention discloses underground construction water burst source advance geology forecast three-dimensional focus induced polarization equipment which comprises a constant current multipath transmitter, a multichannel intelligent receiver, a multipath electrode automatic translator, an industrial personal computer, an observation electrode array and a bucking electrode. Electrodes in the observation electrode array are chosen to serve as a power supply electrode and an observation electrode respectively. The industrial personal computer controls the constant current multipath transmitter to transmit currents of the same nature to the bucking electrode and the power supply electrode so as to enable currents of the power supply electrode to almost point to the front of a tunneling face under the action of the bucking electrode. Scanning data collection is conducted by utilizing the observation electrode, and the collected data back feed to the industrial personal computer through the multichannel intelligent receiver. The industrial personal computer controls the multipath electrode automatic translator to change the power supply electrode. Multipath power supply and multipath collection are achieved by the underground construction water burst source advance geology forecast three-dimensional focus induced polarization equipment, directional detection of a tunnel face is achieved, directivity of the currents is good, and the problem of side interference nearby a measuring line is effectively solved so that background interference data are small, forecast accuracy is improved, and detection range is increased.
Description
Technical field
The present invention relates in the underground engineering constructions such as a kind of tunnel the water bursting disaster source advanced geology prediction system based on the three-dimensional focal induced polarization method, specifically water bursting disaster source advance geologic prediction three-dimensional focal induced polarization of a kind of underground engineering construction phase instrument.
Background technology
China is one of the most serious country of the underground works water bursting disasters such as tunnel, casualties and economic loss that the prominent mud disaster of gushing water causes occupy the prostatitis in the underground works geologic hazards such as all kinds of tunnels, often cause great casualties, serious economic loss and environmental disruption.For preventing the generation of the prominent mud disasters of the underground works gushing water such as tunnel, need to implement advance geologic prediction work in construction period, the purpose of advance geologic prediction work is exactly to verify the geological condition within the square certain limit in face of the Underground Engineering Excavation such as tunnel.But because the strong disguise in the prominent mud disaster source of gushing water and strong complicacy lack effective ways and instrument that water bursting disaster source three-dimensional localization and quantity of water metering are predicted, be the crucial difficult problem that the underground works engineering field such as domestic and international tunnel needs to be resolved hurrily.
From the seventies in last century, begun in the world the unfavorable geology advanced prediction research work of the underground engineering construction phases such as tunnel, the development through nearly 40 years has developed into the multiple geophysical exploration methods such as seismic reflection method, electrical method, electromagnetic method.For the advance geologic prediction in water bursting disaster source, seismic reflection advanced prediction method and equipment thereof (such as TSP method, TRT method etc.) are insensitive to the response of water body, can't effectively identify and locate the water bursting disaster source.Electromagnetism advanced prediction method and equipment thereof (such as geological radar method, transient electromagnetic method etc.) are responsive to the spatial positional information response ratio of water body, certain effect is being arranged aspect the water body location, but the electromagnetic method antijamming capability extremely a little less than, and the size of the unpredictable water yield.
Induced polarization method comparatively effectively in the electrical method class method for forecasting advanced geology, the induced polarization method is proved to be has preferably reaction to the locus of water body and water yield size, for water bursting disaster source advanced prediction three-dimensional localization and a water yield prediction difficult problem in the underground engineering constructions such as solution tunnel provide feasible effective approach.But the underground works forward probe induced polarization equipment such as present existing tunnel all are based on the induced polarization equipment of the fixed point source non-focusing type of electric sounding theory.The induced polarization advanced prediction equipment of non-focusing type be with the detection arrangement of measuring-line on tunnel side wall or base plate, near the survey line side disturbs and has often covered the tunnel excavation useful information of side in front, the precision that location and the water yield in water bursting disaster source are predicted is low, credible poor, often cause the geology detecting erroneous results, affected safety for tunnel engineering.
A crucial difficult problem below existing in the invention of three-dimensional focal type induced polarization equipment: 1. guarded electrode and transmitting electrode need to be exported same sex electric current simultaneously, and the invention with the large electric current constant current of multichannel transmitter of automatic Modulation function is a crucial difficult problem; 2. three-dimensional focal type induced polarization exploration method needs to arrange the observation electrode system that is made of the dozens of electrode in development end, needs development multi-channel GPS observations datamation harvester, i.e. the multi-channel intelligent receiver; 3. this equipment need to be measured the mass data of observation electrod-array, needs constantly to switch electrode in the gatherer process, and the switching of simultaneously large electric current is a difficult problem that needs to be resolved hurrily, and needs development electrode automatic switch.4. this equipment need to possess the function that polynary induced polarization informix gathers, when comprising bucking current, supply current, apparent resistivity, stake resistance, apparent chargeability, induced polarization decay etc.
Summary of the invention
Purpose of the present invention is exactly the problem that exists in order to solve non-focusing type induced polarization equipment, advance geologic prediction three-dimensional focal induced polarization equipment in a kind of underground works water bursting disaster source is provided, its stable performance, highly sensitive, convenient and practical and can manufacture can be forecast variation and the water-bearing zone character of the underground works front of tunnel heading lithology such as tunnel.
For achieving the above object, the present invention adopts following technical proposals.
A kind of underground works water bursting disaster source advance geologic prediction three-dimensional focal induced polarization equipment, it comprises constant current multichannel transmitter, multi-channel intelligent receiver, multi-electrode automatic switch, industrial computer and electrode system; Described electrode system comprises observation electrod-array and guarded electrode; Described observation electrod-array comprises several electrodes, electrode, guarded electrode in the observation electrod-array are connected with the multi-electrode automatic switch respectively, the multi-electrode automatic switch is connected with constant current multichannel transmitter, multi-channel intelligent receiver respectively, and constant current multichannel transmitter, multi-channel intelligent receiver, multi-electrode automatic switch are realized communicating by letter with industrial computer respectively.The present invention will observe electrod-array and guarded electrode be arranged on the tunnel piercing face, arbitrary electrode in the selection observation electrod-array is as transmitting electrode, other electrode is as the observation electrode, industrial computer control constant current multichannel transmitter is to guarded electrode and transmitting electrode transmission same sex electric current, so that the transmitting electrode electric current almost points to the dead ahead of development end under the effect of guarded electrode, do not exist side to disturb; Utilize the data acquisition of observation electrode scanning property, and feed back to industrial computer by the multi-channel intelligent receiver; After having surveyed this circulation, industrial computer control multi-electrode automatic switch is changed transmitting electrode and is carried out next circulation measurement again, can obtain carrying the mass data of development end the place ahead effective information, thereby realize the three-dimensional localization of gushing water dangerous matter sources and the prediction of the water yield, solved non-focusing type induced polarization equipment existing problems.
Described constant current multichannel transmitter comprises emission Single Chip Microcomputer (SCM) system, inverter circuit, multichannel driver module, boost module, rectification module, current-voltage sampling module and data acquisition module.Power supply produces the high pressure steady current by inverter circuit, boost module, rectification module, and rectification module is connected with the multichannel driver module; The control of emission Single Chip Microcomputer (SCM) system inverter circuit, boost module and multichannel driver module are by the electric current in the current-voltage sampling module detection feedback circuit, the adjustable continuous current of control multichannel driver module output multi-channel.
Described emission Single Chip Microcomputer (SCM) system comprises emission single-chip microcomputer, digital display module, clock module, data memory module, data communication module, mainly finish detection, demonstration, switching value and analog quantity control, emission single-chip microcomputer and peripheral circuit power supply are adopted full isolation design with constant current source, keyboard to set up is passed through in the parameter setting, and show at digital display module, the timer of emission Single Chip Microcomputer (SCM) system utilization emission single-chip microcomputer is output function output two-way PWM modulation waveform relatively, and the control inverter circuit utilizes pulse modulation technology (PWM) that DC voltage is carried out inversion; The current-voltage sampling module is to detecting through the electric current behind the rectification module, the emission single-chip microcomputer is regulated booster circuit, pass through the constant of rectification module after-current to satisfy, the current-voltage sampling module detects each road electric current of multichannel driver module output simultaneously, emission Single-chip Controlling multichannel driver module reaches stable setting value thereby regulate each road electric current of multichannel driver module.
Described multichannel driver module, with DC voltage, produce high pressure through inverter circuit and boost module, utilize high-power MOSFET tube to consist of multichannel negative feedback constant current output loop, thereby realize the output of the large electric current of multiple constant current, the current-voltage sampling module is fed back each road size of current simultaneously, thereby regulates power supply way, power-on time, the size of current that the multichannel driver module arranges with output by the emission single-chip microcomputer.
Described current-voltage sampling module, an end detect respectively the multichannel electric current that produces by the electric current behind the rectification module and multichannel driver module, and the other end connects with the emission single-chip microcomputer by data acquisition module and is connected.The current-voltage sampling module adopts the Hall testing circuit, simulates isolation.
Described emission Single Chip Microcomputer (SCM) system also comprises the over-voltage over-current protection module; the over-voltage over-current protection module is connected with current-voltage sampling module, emission single-chip microcomputer respectively; current-voltage sampling module feedback current size is to the current/voltage protection module, and the realization multichannel is exported every branch road output voltage and automatically protected.
Described multi-channel intelligent receiver comprises parallel receiver module, hyperchannel ADC converter, the reception single-chip microcomputer of multiple tracks that connects successively, receives signal successively by receiver module, ADC converter, and enters the reception single-chip microcomputer; Receive single-chip microcomputer the data of each receiver module gathered, realize that by communication and industrial computer control and information feeds back, carry out the final processing of digital signal, finish apparent resistivity, stake resistance, apparent chargeability, when partly declining, the measurement of rate of induced polarization.
Described receiver module comprises that the electrostatic high-pressure that connects successively suppresses circuit, common mode rejection circuit, differential mode inhibition circuit, first order 50Hz line trap, difference input amplifier, second level 50Hz line trap, 100Hz line trap, 8 rank Butterworth 20Hz low-pass filters connections, receives single-chip microcomputer simultaneously by DAC zeroing circuit control difference input amplifier.
Described electrostatic high-pressure inhibition main circuit will absorb static and the surge impact in the working environment, protection back-end circuit; Common mode rejection circuit and differential mode suppress common mode, the differential mode interference signal that circuit absorbs input, and two-stage 50Hz line trap tentatively absorbs the 50Hz power frequency to be disturbed, and guarantee that the dc point of difference input amplifier is not with above-mentioned undesired signal drift; Difference input amplifier output signal through first order 50Hz line trap and 100Hz line trap, fully suppresses the interference of power frequency and industrial frequency harmonic; 8 rank Butterworth LPF have the damping capacity of per ten octaves of 40dB, and guarantee the smooth of the interior signal of bandwidth.
Described multi-electrode automatic switch comprises the multicircuit relay switch, decoding circuit, the converter single chip machine, communication module, voltage sampling circuit, industrial computer is connected with the converter single chip machine by communication module, the converter single chip machine is connected with the multicircuit relay switch by decoding circuit, multicircuit relay switch one end is connected with electrode system, the other end is connected with the multi-channel intelligent receiver with the constant current multichannel transmitter by multiway cable, can carry out winner, dipole, differential, connection cuts open four kinds and arranges conversion, measuring point of every change only needs a second, greatly saved manpower, material resources and time, precision and the efficient measured have been improved.
Described multicircuit relay switch adopts high power relay, adopt simultaneously voltage sampling circuit to detect high power relay voltage, feed back to industrial computer by the converter single chip machine, thereby realize launching the quick switching of large electric current, avoid load to burn too greatly relay.The instruction that the converter single chip machine sends according to industrial computer by the opening and closing of coding circuit control multicircuit relay switch, has realized that multi-electrode changes fast.
Described industrial computer comprises the signal identification module, signal processing module and terminal display control module, industrial computer is connected with the constant current multichannel transmitter by communication, realize control and information feedback by communication and industrial computer, be connected with the multi-electrode automatic switch by communication, the multi-electrode automatic switch can be set, the constant current multichannel transmitter, the parameter of multi-channel intelligent receiver, while is to the steering order of multi-channel intelligent receiver and constant current multichannel transmitter transmitting branch way and every branch current size, the voltage of finishing multi-electrode automatic switch feedback detects, to the processing through the multiple signals of multi-channel intelligent receiver, and carry out digital signal processing and terminal shows.
Actual application of the present invention is simple to operate:
1, connects instrument.The connecting electrode cable is to the multi-electrode automatic switch, and the multi-electrode automatic switch is connected with constant current multichannel transmitter multi-channel output, multi-channel intelligent receiver multipath reception end by cable.
2, start receiver.Connect power supply, open transmitter, receiver switch, open control software and open port.
3, parameters.Feed circuit way, size of current, power-on time are set, and the multi-channel intelligent receiver receives way, sampling time, interval is set, and multi-electrode automatic switch parameter is set.
4, instrument testing.Measurement of Grounding Resistance, the situation that contacts in inspecting electrode and survey district, the connection situation of detection constant current multichannel transmitter, multi-channel intelligent receiver, multi-electrode automatic switch.
5, apparatus measures.Click " zero-setting button " and begin zeroing, treat that curve display window voltage curve stops zeroing when zero point.Click " beginning to measure " transmitter current and begin to measure, click " stopping sampling " and stop current sample, stop current emission.
6, preservation is withdrawed from.Click " save data " and preserve curve and sampled value, withdraw from simultaneously capture program.
The invention has the beneficial effects as follows:
1, high-power high-accuracy multichannel driver module is adopted in this invention, realized the large electric current constant current of the multichannel transmitter of automatic Modulation function, can realize 6 tunnel large electric current constant current outputs, thereby realization guarded electrode and transmitting electrode are exported the adjustable same sex electric current of size simultaneously, electric current output area 0～2.0A, step-length 0.01A.
2, this invention can be used 8 roads parallel receiver module, 24 ADC converters of three hyperchannels, realized multi-channel GPS observations data multi-channel intelligent receiver, can realize simultaneously 8 passage observation data synchro measures, greatly improved collecting efficiency, capable of meeting requirements on three-dimensional focus type induced polarization exploration method is surveyed the requirement of huge data volume.
3, the multi-electrode conversion equipment has been used in this invention, this device has been realized the robotization conversion of electrode, and adopt high power relay and feedback circuit to realize the automatic switchover of large electric current, realized that the focusing induced polarization exploration gathers automatically according to predefined sequence, improved collecting efficiency, for three-dimensional focal induced polarization quick detection provides hardware supported.
4, this invention has realized focusing on the hardware system of induced polarization instrument, can finish apparent resistivity, stake resistance, apparent chargeability, when partly declining, rate of induced polarization etc. multiple information synthetical collection, its electric current directive property is good, realized the directed advanced prediction of face, effectively reduce the interfere information at face rear, improved precision and the accuracy surveyed.The active demand of geologic hazard control in the present key state project construction be can satisfy, will considerable economic benefit and social benefit be brought.
Description of drawings
Fig. 1 is principle of the invention structural drawing.
Fig. 2 is constant current multichannel transmitter structural drawing of the present invention.
Fig. 3 multi-channel intelligent receiver structure of the present invention figure.
Fig. 4 is the receiver module hardware principle block diagram of multi-channel intelligent receiver of the present invention.
Fig. 5 multi-electrode automatic switch of the present invention structural drawing.
Wherein, 1, large electric current constant current multichannel transmitter; 2, multi-channel intelligent receiver; 3, multi-electrode automatic switch; 4, industrial computer; 5, electrode system; 6, H bridge inverter circuit; 7, boost module; 8, rectification module; 9, high-power high-accuracy multichannel driver module; 10, current-voltage sampling module; 11, over-voltage over-current protection module; 12, data acquisition module; 13, emission single-chip microcomputer; 14, digital display module; 15, clock module; 16, data memory module; 17, data communication module; 18, receiver module; 19, ADC converter; 20, receive single-chip microcomputer; 21, multicircuit relay switch; 22, decoding circuit; 23, converter single chip machine; 24, communication module; 25, voltage sampling circuit.
Embodiment
The invention will be further described below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1, a kind of underground works water bursting disaster source advance geologic prediction three-dimensional focal induced polarization equipment, it comprises large electric current constant current multichannel transmitter 1, multi-channel intelligent receiver 2, multi-electrode automatic switch 3, industrial computer 4 and electrode system 5; Electrode system 5 comprises observation electrod-array and guarded electrode; Described observation electrod-array comprises several electrodes, electrode, guarded electrode in the observation electrod-array are connected with multi-electrode automatic switch 3 respectively, electrode system 5 has 36 path electrodes, multi-electrode automatic switch 3 is connected with large electric current constant current multichannel transmitter 1, multi-channel intelligent receiver 2 respectively, and large electric current constant current multichannel transmitter 1, multi-channel intelligent receiver 2, multi-electrode automatic switch 3 are realized communicating by letter with industrial computer 4 respectively.The present invention will observe electrod-array and guarded electrode group be arranged on the tunnel piercing face, arbitrary electrode in the selection observation electrod-array is as transmitting electrode, other electrode is as the observation electrode, the large electric current constant current multichannel transmitter 1 of industrial computer 4 controls is to guarded electrode and transmitting electrode transmission same sex electric current, so that the transmitting electrode electric current almost points to the dead ahead of development end under the effect of guarded electrode, do not exist side to disturb; Utilize the data acquisition of observation electrode scanning property, and feed back to industrial computer 4 by multi-channel intelligent receiver 2; After having surveyed this circulation, industrial computer 4 control multi-electrode automatic switches 3 are changed transmitting electrode and are carried out next circulation measurement again, can obtain carrying the mass data of development end the place ahead effective information, thereby realize the three-dimensional localization of gushing water dangerous matter sources and the prediction of the water yield, solved non-focusing type induced polarization equipment existing problems.
Described large electric current constant current multichannel transmitter 1 mainly is comprised of emission Single Chip Microcomputer (SCM) system, H bridge inverter circuit 6, high-power high-accuracy multichannel driver module 9, boost module 7, rectification module 8, current-voltage sampling module 10, over-voltage over-current protection module 11 and data acquisition module 12, such as Fig. 2.The 36V power supply produces the high pressure steady current by H bridge inverter circuit 6, boost module 7, rectification module 8, and rectification module 8 is connected with high-power high-accuracy multichannel driver module 9; Emission Single Chip Microcomputer (SCM) system control H bridge inverter circuit 6, boost module 7 and high-power high-accuracy multichannel driver module 9, detect electric current in the feedback circuits by current-voltage sampling module 10, the continuous current that 9 outputs 6 tunnel of control high-power high-accuracy multichannel driver module are adjustable is to the multicircuit relay switch.
Described emission Single Chip Microcomputer (SCM) system comprises emission single-chip microcomputer 13, its model is MSP430F169, digital display module 14, clock module 15, data memory module 16, data communication module 17, mainly finish detection, demonstration, switching value and analog quantity control, emission single-chip microcomputer 13 and peripheral circuit power supply are adopted full isolation design with constant current source, the parameter setting is by keyboard to set up and show that the LED mode is adopted in demonstration.The timer of emission single-chip computer control system utilization emission single-chip microcomputer 13 is output function output two-way PWM modulation waveform relatively, and control H bridge inverter circuit 6 utilizes pulse modulation technology (PWM) that DC voltage is carried out inversion; Electric current behind 10 pairs of processes of current-voltage sampling module rectification module 8 detects, emission single-chip microcomputer 13 is regulated boost module 7, pass through the constant of rectification module 8 after-currents to satisfy, each road electric current of 10 pairs of high-power high-accuracy multichannels of current-voltage sampling module driver module, 9 outputs detects simultaneously, emission single-chip microcomputer 13 control high-power high-accuracy multichannel driver modules 9 reach stable setting value thereby regulate high-power high-accuracy multichannel driver module 9 each road electric current.
Described high-power high-accuracy multichannel driver module 9, by the 36V DC voltage from battery pack output, produce high pressure through H bridge inverter circuit 6 and boost module 7, utilize high-power MOSFET tube to consist of multichannel negative feedback constant current output loop, thereby realize the output of the large electric current of 6 tunnel constant currents, current-voltage sampling module 10 is fed back each road size of current simultaneously, thereby regulate power supply way, power-on time, the size of current that high-power high-accuracy multichannel driver module 9 arranges with output by emission single-chip microcomputer 13, current setting value scope 0～2.0A, step-length 0.01A.
Described current-voltage sampling module 10; one end detects respectively the multichannel electric current that produces by the electric current behind the rectification module 8 and high-power high-accuracy multichannel driver module 9; the other end is connected with current/voltage protection module 11, data acquisition module 12 respectively, and is connected with emission single-chip microcomputer 13.Current-voltage sampling module 10 adopts the Hall testing circuit, simulates isolation, and simultaneously, current-voltage sampling module 10 feedback currents size is to current/voltage protection module 11, and the realization multichannel is exported every branch road output voltage and automatically protected above 1000V.
Described multi-channel intelligent receiver 2 comprises the parallel receiver module 18 in 8 roads, 24 ADC converters 19 of three hyperchannels, receives single-chip microcomputer 20 compositions, such as Fig. 3, receive signal successively by receiver module 18,24 ADC converters 19 of hyperchannel, and enter reception single-chip microcomputer 20; Reception single-chip microcomputer 20 gathers the data of each receiver module 18, feeds back by communication and industrial computer 4 realization controls and information.
Described receiver module 18 comprises that the electrostatic high-pressure that connects successively suppresses circuit, common mode rejection circuit, differential mode inhibition circuit, first order 50Hz line trap, difference input amplifier, second level 50Hz line trap, 100Hz line trap, 8 rank Butterworth 20Hz low-pass filters connections, receive simultaneously single-chip microcomputer 20 by DAC zeroing circuit control difference input amplifier, its theory diagram such as Fig. 4.
Described electrostatic high-pressure inhibition main circuit will absorb static and the surge impact in the working environment, protection back-end circuit; Common mode rejection circuit and differential mode suppress common mode, the differential mode interference signal that circuit absorbs input, and two-stage 50Hz line trap tentatively absorbs the 50Hz power frequency to be disturbed, and guarantee that the dc point of difference input amplifier is not with above-mentioned undesired signal drift; Difference input amplifier output signal through first order 50Hz line trap and 100Hz line trap, fully suppresses the interference of power frequency and industrial frequency harmonic; 8 rank Butterworth LPF have the damping capacity of per ten octaves of 40dB, and guarantee the smooth of the interior signal of bandwidth.The input bipolar signal of ADC converter 19, peak signal voltage are ± 15V that the signal resolution of conversion output can reach 24 under every gain per stage.The DAC zeroing circuit is connected with the difference input amplifier, and minimum zeroing voltage is ± 4.8uV.
Described multi-electrode automatic switch 3 mainly is comprised of multicircuit relay switch 21, decoding circuit 22, converter single chip machine 23, communication module 24, voltage sampling circuit 25 etc., such as Fig. 5.Industrial computer 4 is connected with converter single chip machine 23 by communication module, converter single chip machine 23 is connected with multicircuit relay switch 21 by decoding circuit 22, multicircuit relay switch 21 1 ends are connected with 36 path electrodes, the other end is connected with receiver module with high-power high-accuracy multichannel driver module 9 respectively by multiway cable and is connected, can carry out winner, dipole, differential, connection cuts open four kinds and arranges conversion, measuring point of every change only needs a second, greatly save human and material resources and time, improved precision and the efficient measured.
Described multicircuit relay switch 21 adopts high power relay, adopt simultaneously voltage sampling circuit 25 to detect high power relay voltage, feed back to industrial computer 4 by converter single chip machine 23, thereby realize launching the quick switching of large electric current, avoid load to burn too greatly relay.The instruction that converter single chip machine 23 sends according to industrial computer 4 by the opening and closing of coding circuit 22 control multicircuit relay switches 21, has realized that 36 path electrodes change fast.
Described industrial computer 4 comprises signal identification module, signal processing module and terminal display control module, industrial computer 4 is connected with large electric current constant current multichannel transmitter 1 by communication, industrial computer 4 is realized signal controlling by communication and large electric current constant current multichannel transmitter 1, and industrial computer 4 carries out the final processing of digital signal, finish apparent resistivity, stake resistance, apparent chargeability, when partly declining, the measurement of rate of induced polarization.Realize control and information feedback by communication and multi-channel intelligent receiver 2, be connected with multi-electrode automatic switch 3 by communication, multi-electrode automatic switch 3 can be set, large electric current constant current multichannel transmitter 1, the parameter of multi-channel intelligent receiver 2, simultaneously to the steering order of multi-channel intelligent receiver 2 with large electric current constant current multichannel transmitter 1 transmitting branch way and every branch current size, the voltage of finishing multi-electrode automatic switch 3 feedbacks detects, to the processing through the multiple signals of multi-channel intelligent receiver 2, and carry out digital signal processing and terminal shows.
The present invention is when work, by arranging scan electrode array and guarded electrode at face, so that the transmitting electrode electric current almost radially flows into country rock under the effect of guarded electrode, can obtain carrying the front of tunnel heading effective information, adopt multi-electrode automatic switch 3, multi-channel intelligent receiver 2, large electric current constant current multiple-way supply transmitter 1, the data that the Quick Acquisition to front of tunnel heading information can obtain to enrich have been realized, utilize 3 D resistivity inversion imaging technology and instream flow estimate technology that the water content of front of tunnel heading is carried out GEOLOGICAL INTERPRETATION, the directive property of electric current is good, efficiently solving near the side of survey line disturbs (such as the low-resistance water content, hardware) problem, so that the background interference data are few, forecast precision and detection range improve greatly.
Although above-mentionedly by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (10)
1. a underground works water bursting disaster source advance geologic prediction three-dimensional focal induced polarization equipment is characterized in that, comprises constant current multichannel transmitter, multi-channel intelligent receiver, multi-electrode automatic switch, industrial computer and electrode system; Described electrode system comprises observation electrod-array and guarded electrode; Described observation electrod-array comprises several electrodes, electrode, guarded electrode in the observation electrod-array are connected with the multi-electrode automatic switch respectively, the multi-electrode automatic switch is connected with constant current multichannel transmitter, multi-channel intelligent receiver respectively, and constant current multichannel transmitter, multi-channel intelligent receiver, multi-electrode automatic switch are realized communicating by letter with industrial computer respectively; Described observation electrod-array and guarded electrode are arranged on the tunnel piercing face, arbitrary electrode in the selection observation electrod-array is as transmitting electrode, other electrode is as the observation electrode, industrial computer control constant current multichannel transmitter is to guarded electrode and transmitting electrode transmission same sex electric current, so that the transmitting electrode electric current almost points to the dead ahead of development end under the effect of guarded electrode; Utilize the data acquisition of observation electrode scanning property, and feed back to industrial computer by the multi-channel intelligent receiver; Industrial computer control multi-electrode automatic switch is changed transmitting electrode and is carried out next circulation measurement again.
2. underground works water bursting disaster source advance geologic prediction three-dimensional focal induced polarization equipment as claimed in claim 1, it is characterized in that described constant current multichannel transmitter comprises emission Single Chip Microcomputer (SCM) system, inverter circuit, multichannel driver module, boost module, rectification module, current-voltage sampling module and data acquisition module; Power supply produces the high pressure steady current by inverter circuit, boost module, rectification module, and rectification module is connected with the multichannel driver module; The control of emission Single Chip Microcomputer (SCM) system inverter circuit, boost module and multichannel driver module are by the electric current in the current-voltage sampling module detection feedback circuit, the adjustable continuous current of control multichannel driver module output multi-channel.
3. underground works water bursting disaster source advance geologic prediction three-dimensional focal induced polarization equipment as claimed in claim 2, it is characterized in that, described emission Single Chip Microcomputer (SCM) system comprises emission single-chip microcomputer, digital display module, clock module, data memory module, data communication module, finish detection, demonstration, switching value and analog quantity control, emission Single-chip Controlling inverter circuit carries out inversion to DC voltage; The current-voltage sampling module is to detecting through the electric current behind the rectification module, the emission single-chip microcomputer is regulated booster circuit, pass through the constant of rectification module after-current to satisfy, the current-voltage sampling module detects each road electric current of multichannel driver module output simultaneously, emission Single-chip Controlling multichannel driver module reaches stable setting value thereby regulate each road electric current of multichannel driver module.
4. underground works water bursting disaster source advance geologic prediction three-dimensional focal induced polarization equipment as claimed in claim 2, it is characterized in that, described multichannel driver module, with DC voltage, through inverter circuit, boost module formation multichannel negative feedback constant current output loop, thus the output of the large electric current of realization multiple constant current.
5. underground works water bursting disaster source advance geologic prediction three-dimensional focal induced polarization equipment as claimed in claim 2, it is characterized in that, described current-voltage sampling module, one end detects respectively the multichannel electric current that produces by the electric current behind the rectification module and multichannel driver module, and the other end connects with the emission single-chip microcomputer by data acquisition module and is connected.
6. underground works water bursting disaster source advance geologic prediction three-dimensional focal induced polarization equipment as claimed in claim 2; it is characterized in that; described emission Single Chip Microcomputer (SCM) system also comprises the over-voltage over-current protection module; the over-voltage over-current protection module is connected with current-voltage sampling module, emission single-chip microcomputer respectively; current-voltage sampling module feedback current size is to the current/voltage protection module, and the realization multichannel is exported every branch road output voltage and automatically protected.
7. underground works water bursting disaster source advance geologic prediction three-dimensional focal induced polarization equipment as claimed in claim 1, it is characterized in that, described multi-channel intelligent receiver comprises parallel receiver module, hyperchannel ADC converter, the reception single-chip microcomputer of multiple tracks that connects successively, receive signal successively by receiver module, ADC converter, and enter the reception single-chip microcomputer; The reception single-chip microcomputer gathers the data of each receiver module, feeds back by communication and industrial computer realization control and information, carries out the final processing of digital signal.
8. underground works water bursting disaster source advance geologic prediction three-dimensional focal induced polarization equipment as claimed in claim 7, it is characterized in that, described receiver module comprises that the electrostatic high-pressure that connects successively suppresses circuit, common mode rejection circuit, differential mode inhibition circuit, first order 50Hz line trap, difference input amplifier, second level 50Hz line trap, 100Hz line trap, 8 rank Butterworth 20Hz low-pass filters connections, receives single-chip microcomputer simultaneously by DAC zeroing circuit control difference input amplifier.
9. underground works water bursting disaster source advance geologic prediction three-dimensional focal induced polarization equipment as claimed in claim 1, it is characterized in that, described multi-electrode automatic switch comprises multicircuit relay switch, decoding circuit, converter single chip machine, communication module, voltage sampling circuit, industrial computer is connected with the converter single chip machine by communication module, the converter single chip machine is connected with the multicircuit relay switch by decoding circuit, multicircuit relay switch one end is connected with electrode system, and the other end is connected with the multi-channel intelligent receiver with the constant current multichannel transmitter by multiway cable; Described multicircuit relay switch adopts high power relay, adopts simultaneously voltage sampling circuit to detect high power relay voltage, feeds back to industrial computer by the converter single chip machine, thereby realizes launching the quick switching of large electric current; The instruction that the converter single chip machine sends according to industrial computer, by the opening and closing of coding circuit control multicircuit relay switch, the realization multi-electrode is changed fast.
10. underground works water bursting disaster source advance geologic prediction three-dimensional focal induced polarization equipment as claimed in claim 1, it is characterized in that, described industrial computer comprises the signal identification module, signal processing module and terminal display control module, industrial computer is connected with the constant current multichannel transmitter by communication, realize control and information feedback by communication and industrial computer, be connected with the multi-electrode automatic switch by communication, the multi-electrode automatic switch can be set, the constant current multichannel transmitter, the parameter of multi-channel intelligent receiver, while is to the steering order of multi-channel intelligent receiver and constant current multichannel transmitter transmitting branch way and every branch current size, the voltage of finishing multi-electrode automatic switch feedback detects, to the processing through the multiple signals of multi-channel intelligent receiver, and carry out digital signal processing and terminal shows.
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| CN201310013435.5A CN103064121B (en) | 2013-01-15 | 2013-01-15 | Underground construction water burst source advance geology forecast three-dimensional focus induced polarization equipment |
| PCT/CN2013/000042 WO2014110689A1 (en) | 2013-01-15 | 2013-01-17 | Three-dimensional focus induced polarization device for advanced geological forecast of water burst source in underground construction |
| US14/235,332 US9256003B2 (en) | 2013-01-15 | 2013-01-17 | Three-dimensional focusing induced polarization equipment for advanced geological prediction of water inrush disaster source in underground engineering |
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Denomination of invention: 3D Focused Induced Polarization Equipment for Advance Geological Prediction of Water Burst Disaster Sources in Underground Engineering Effective date of registration: 20230710 Granted publication date: 20140129 Pledgee: Bank of Beijing Co.,Ltd. Jinan Branch Pledgor: Shandong bai20 Huitong Engineering Technology Co.,Ltd. Registration number: Y2023370000101 |