CN204790022U - Tunnel is visited water electromagnetic emission machine, transmitting system and is visited water system - Google Patents
Tunnel is visited water electromagnetic emission machine, transmitting system and is visited water system Download PDFInfo
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- CN204790022U CN204790022U CN201520549657.3U CN201520549657U CN204790022U CN 204790022 U CN204790022 U CN 204790022U CN 201520549657 U CN201520549657 U CN 201520549657U CN 204790022 U CN204790022 U CN 204790022U
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Abstract
The utility model relates to a water electromagnetic emission machine is visited in the tunnel, including step up transformer T1, bridge rectifier Z, bleeder circuit, electric capacity C and output transformer T2 parallelly connected in proper order, series inductance L1 between bridge rectifier Z and the bleeder circuit, tandem tap K2 between bleeder circuit and the electric capacity C, the one end that inductance L2 connects output transformer T2 is passed through to electric capacity C's one end, and thyristor SCR's negative pole is connected to the other end, thyristor SCR's the anodal other end of connecting output transformer T2, output transformer T2's output is used for connecting emitting electrode, bleeder circuit connects thyristor SCR ignite. The utility model discloses a high -power launch technology has improved the detection range greatly, has realized big distance and has visited the target of water, and the detection range exceedes 100m, the adoption improves the sensitivity of visiting water to the intermediate frequency of the moisture sensitiveness of rock mass technique, adopts in the country rock interference of dipole emitting electrode in order to avoid metal induction field in the tunnel.
Description
Technical field
The utility model relates to tunnel and visits water technical field, particularly relates to a kind of tunnel and visits water power magnetic transmitter, emission coefficient and visit water system.
Background technology
Usually can run into the water-bearing structures such as karst, underground river, fracture in constructing tunnel, cause disastrous accident, jeopardize safety for tunnel engineering and quality, the forecast of therefore country rock water-bearing structure is the focus paid close attention to always.Current Geologic Advance Prediction Technology both domestic and external is mainly based on seismic method, and electromagnetic method application seldom.Seismic method mainly detects the difference of country rock physical property, and the effect for geologic elements such as forecast lithologic interface, weak band and rift structures is fine.The moisture change mainly causing electric conductivity and permittivity of country rock, change less to the physical form of medium, thus seismic method is insensitive to the property of water-bearing, and the property of water-bearing of electromagnetic method to country rock is more responsive.
The method such as nuclear magnetic resonance (MRS), high-density electric, audio-electromagnetically depth measurement CSAMT, transient electromagnetic (TEM) is had both at home and abroad for the electromagnetic method visiting water.These methods are mainly used in earth's surface, are difficult to be transplanted in tunnel.
The multiplex geological radar of detecting water by pilot hole (GPR) in tunnel, mix 100MHz antenna, investigation depth is no more than 15m.Because detection range is too little, the requirement of constructing tunnel can not be met.In recent years transient electromagnetic method (TEM) and magnetic nuclear resonance method also start useful spy water test in tunnel, tunnel, but due to cannot near the interference of face and metal facility in TBM construction tunnel, application difficult.GET company of Germany is that TBM construction tunnel develops BEAM technology, and it is that a kind of electromagnetism based on Dual-frequency Ip Method principle visits water technology, and detection range is about 3 times of tunnel diameter, is no more than 30m.In addition, need the ground wire that the nearly km of use two is long in observation, lay also very inconvenient, have influence on application.
As the above analysis, current tunnel both domestic and external electromagnetism visits water technology detection range finding from too near, is no more than 30m, not high to the sensitivity of water, many by the restriction of constructing tunnel condition and the interference being easily subject to metal induction field in tunnel.
Utility model content
Technical problem to be solved in the utility model is for the deficiencies in the prior art, provides a kind of tunnel visit water power magnetic transmitter, emission coefficient and visit water system.
The technical scheme that the utility model solves the problems of the technologies described above is as follows:
Water power magnetic transmitter is visited in a kind of tunnel, comprise step-up transformer T1 in parallel successively, bridge rectifier Z, bleeder circuit, electric capacity C and output transformer T2, series inductance L1 between described bridge rectifier Z and bleeder circuit, tandem tap K2 between described bleeder circuit and electric capacity C, one end of described electric capacity C connects one end of output transformer T2 by inductance L 2, the other end connects the negative pole of thyristor SCR, the positive pole of thyristor SCR connects the other end of output transformer T2, the output terminal of described output transformer T2 is for connecting emitting electrode, described bleeder circuit connects thyristor SCR trigger electrode.
The beneficial effects of the utility model are: the utility model adopts high-power lift-off technology, substantially increases detection range, and achieve the target that large distance visits water, detection range, more than 100m, meets the demand of constructing tunnel; Adopt the intermediate frequency technology of rock mass containing water sensitivity, improve the sensitivity visiting water, adopt in country rock and adopt dipole electrode to avoid the interference of metal induction field in tunnel.
On the basis of technique scheme, the utility model can also do following improvement.
Further, technique scheme also comprises inverter circuit, the K switch 0 that described inverter circuit comprises inverter IT and connects with inverter, and described ifft circuit is in parallel with step-up transformer T1, and tandem tap K1 between described inverter circuit and step-up transformer T1.
Further, described inverter IT is be the inverter of 220VAC by 12VDC inversion.
Adopt the beneficial effect of above-mentioned further scheme: described tunnel is visited water power magnetic transmitter and can directly be used 220VAC AC power directly to power, when there is no 220VAC AC power, scene can use 12V battery, and the AC power being 220VAC by 12VDC inversion by inverter IT is powered.
Further, described bleeder circuit comprises resistance R1 and the resistance R2 of series connection, and the common port of described resistance R1 and resistance R2 is connected the trigger electrode of thyristor SCR by K switch 4.
Further, described step-up transformer T1 is the step-up transformer that 220V boosts to 4400V.
Further, the step-up ratio range of adjustment of described output transformer T2 is 1 to 10.
Further, the centre frequency of the launching circuit that described electric capacity C and inductance L 2 form is 1MHZ, and bandwidth is 100KHz-10MHz.
Adopt the beneficial effect of such scheme: form launching circuit by electric capacity C and inductance L 2, generation dominant frequency is 1MHz, frequency range is the envelope signal of 100KHz-10MHz, this band signal is responsive to the country rock property of water-bearing, substantially increases the sensitivity of detection.
Water Electro-magnetic Launcher System is visited in a kind of tunnel, and water power magnetic transmitter is visited in the tunnel comprised described in technique scheme, also comprises the emitting electrode be embedded in country rock, and the output terminal of the output transformer T2 of water power magnetic transmitter is visited for connecting emitting electrode in described tunnel.
On the basis of technique scheme, the utility model can also do following improvement.
Further, described emitting electrode is electric dipole electrode.
Water system is visited in a kind of tunnel, water power magnetic transmitter is visited in the tunnel comprised described in technique scheme, also comprise the emitting electrode be embedded in country rock, be embedded in one or more pairs of receiving electrode in country rock and data collector, the output terminal of the output transformer T2 of water power magnetic transmitter is visited for connecting emitting electrode in described tunnel, and one or more pairs of described receiving electrode is connected with described data collector.
Accompanying drawing explanation
Fig. 1 is that water power magnetic transmitter circuit diagram is visited in tunnel described in the utility model.
Embodiment
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, water power magnetic transmitter is visited in a kind of tunnel, comprise step-up transformer T1 in parallel successively, bridge rectifier Z, bleeder circuit, electric capacity C and output transformer T2, series inductance L1 between described bridge rectifier Z and bleeder circuit, tandem tap K2 between described bleeder circuit and electric capacity C, one end of described electric capacity C connects one end of output transformer T2 by inductance L 2, the other end connects the negative pole of thyristor SCR, the positive pole of thyristor SCR connects the other end of output transformer T2, the output terminal of described output transformer T2 is for connecting emitting electrode, described bleeder circuit connects thyristor SCR trigger electrode.
Technique scheme also comprises inverter circuit, the K switch 0 that described inverter circuit comprises inverter IT and connects with inverter, and described ifft circuit is in parallel with step-up transformer T1, and tandem tap K1 between described inverter circuit and step-up transformer T1.Described inverter IT is for being 220VAC by 12VDC inversion.Water power magnetic transmitter is visited in described tunnel can directly use 220VAC Power supply, and when not having 220VAC power supply, scene can use 12V battery, and the power supply being 220VAC by 12VDC inversion by inverter IT is powered.
Described bleeder circuit comprises resistance R1 and the resistance R2 of series connection, and the common port of described resistance R1 and resistance R2 is connected the trigger electrode of thyristor SCR by K switch 4.
Described step-up transformer T1 is the step-up transformer that 220V boosts to 4400V.
The step-up ratio range of adjustment of described output transformer T2 is 1 to 10.
The centre frequency of the launching circuit that described electric capacity C and inductance L 2 form is 1MHZ, and bandwidth is 100KHz-10MHz.Form launching circuit by electric capacity C and inductance L 2, generation dominant frequency is 1MHz, frequency range is the envelope signal of 100KHz-10MHz, and this band signal is responsive to the country rock property of water-bearing, substantially increases the sensitivity of detection.
The principle of work that water power magnetic transmitter is visited in described tunnel is as follows:
Transmitter uses 220VAC to power.Can use 12V battery during work on the spot, in machine, 12VDC inversion is 220VAC by configuration IT module.If use 12V battery during work on the spot, K switch 0 closed, inverter IT works; If use alternating current directly to power, do not use powered battery, then K switch 0 opened, inverter IT does not work.
Transmitter work divides two working stages, is also two states.One is charged state, and another is discharge condition.Discharge condition is also emission state.
Charging stage state:
Charged state K switch 1 and K switch 2 close, and K switch 3 and K switch 4 disconnect.220V power supply boosts to 4400V through transformer T1, exports high direct voltage through full-bridge rectification module Z.High direct voltage is charged through inductance L 1 couple of capacitor C.The effect of L1 increases electric current when charge initiation to contain, protection rectifier bridge avoids overload.Voltage after charging on capacitor is 4400VDC.
Discharge regime state:
During electric discharge, K switch 1 and K switch 3 still protect original state.First disconnect accumulator (capacitor C) and charge circuit (being made up of inductance L 1 and capacitor C) with K2, then closed K4 switch, triggers SCR turn on thyristors, capacitor C is discharged by inductance L 2 and transformer T2, concussion dominant frequency 1MHz.Transformer T2 is step-up transformer, and step-up ratio is adjustable between 1-10.Transformer exports the electrode A, the B that are connected in rock mass.The high impedance of rock mass, while output HIGH voltage in rock mass, is coupled to discharge loop by it, forms damping loss, and this is the energy loss of launching.
When electromagnetics transmitter work is complete, cut-off switch K1 and K switch 4, Closing Switch K2 and K switch 3, make remaining energy in accumulator (capacitor C) discharge.
Tunnel described in the utility model is visited water power magnetic transmitter and is adopted high-power capacitance energy storage device capacitor C and transformer T2 to be coupled, realize the function that high-power is launched, substantially increase detection range, achieve the target that large distance visits water, detection range is more than 100m; Form launching circuit by electric capacity C and inductance L 2, generation dominant frequency is 1MHz, frequency range is the envelope signal of 100KHz-10MHz, and this band signal is responsive to the country rock property of water-bearing, substantially increases the sensitivity of detection; High-voltage signal, by output transformer T2, is coupled to the electric dipole electrode be embedded in country rock by the launching circuit that described electric capacity C and inductance L 2 are formed, and improves emitting electromagnetic wave magnetic field by force, avoids the interference of metal induction field in tunnel.
Water Electro-magnetic Launcher System is visited in a kind of tunnel, and water power magnetic transmitter is visited in the tunnel comprised described in technique scheme, also comprises the emitting electrode be embedded in country rock, and the output terminal of the output transformer T2 of water power magnetic transmitter is visited for connecting emitting electrode in described tunnel.Described emitting electrode is electric dipole electrode.
Water system is visited in a kind of tunnel, water power magnetic transmitter is visited in the tunnel comprised described in technique scheme, also comprise the emitting electrode be embedded in country rock, be embedded in one or more pairs of receiving electrode in country rock and data collector, the output terminal of the output transformer T2 of water power magnetic transmitter is visited for connecting emitting electrode in described tunnel, and one or more pairs of described receiving electrode is connected with described data collector.
The utility model solves a difficult problem for country rock water content detection on a large scale in tunnel, has filled up the blank of this technical field domestic and international.For constructing tunnel provides safety guarantee, engineering project disaster is avoided to lose; Greatly improve driving speed and operating efficiency; Not only solve a difficult problem for TBM tunnel detecting water by pilot hole, also may be used for drill+blast tunnel.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. water power magnetic transmitter is visited in a tunnel, it is characterized in that, comprise step-up transformer T1 in parallel successively, bridge rectifier Z, bleeder circuit, electric capacity C and output transformer T2, series inductance L1 between described bridge rectifier Z and bleeder circuit, tandem tap K2 between described bleeder circuit and electric capacity C, one end of described electric capacity C connects one end of output transformer T2 by inductance L 2, the other end connects the negative pole of thyristor SCR, the positive pole of thyristor SCR connects the other end of output transformer T2, the output terminal of described output transformer T2 is for connecting emitting electrode, described bleeder circuit connects thyristor SCR trigger electrode.
2. water power magnetic transmitter is visited in a kind of tunnel according to claim 1, it is characterized in that, also comprise inverter circuit, the K switch 0 that described inverter circuit comprises inverter IT and connects with inverter, described ifft circuit is in parallel with step-up transformer T1, and tandem tap K1 between described inverter circuit and step-up transformer T1.
3. water power magnetic transmitter is visited in a kind of tunnel according to claim 2, it is characterized in that, described inverter IT is the inverter of 220VAC by 12VDC inversion.
4. water power magnetic transmitter is visited in a kind of tunnel according to claim 1, and it is characterized in that, described bleeder circuit comprises resistance R1 and the resistance R2 of series connection, and the common port of described resistance R1 and resistance R2 is connected to the trigger electrode of thyristor SCR by K switch 4.
5. water power magnetic transmitter is visited in a kind of tunnel according to claim 1, and it is characterized in that, described step-up transformer T1 is the step-up transformer that 220V boosts to 4400V.
6. water power magnetic transmitter is visited in a kind of tunnel according to claim 1, and it is characterized in that, the step-up ratio range of adjustment of described output transformer T2 is 1 to 10.
7. water power magnetic transmitter is visited in a kind of tunnel according to claim 1, it is characterized in that, the centre frequency of the launching circuit that described electric capacity C and inductance L 2 form is 1MHZ, and bandwidth is 100KHz-10MHz.
8. water Electro-magnetic Launcher System is visited in a tunnel, it is characterized in that, water power magnetic transmitter is visited in the tunnel comprised according to any one of claim 1-7, also comprises the emitting electrode be embedded in country rock, and the output terminal of the output transformer T2 of water power magnetic transmitter is visited for connecting emitting electrode in described tunnel.
9. water Electro-magnetic Launcher System is visited in a kind of tunnel according to claim 8, and it is characterized in that, described emitting electrode is electric dipole electrode.
10. water system is visited in a tunnel, it is characterized in that, water power magnetic transmitter is visited in the tunnel comprised described in any one of claim 1-7, also comprise the emitting electrode be embedded in country rock, be embedded in one or more pairs of receiving electrode in country rock and data collector, the output terminal of the output transformer T2 of water power magnetic transmitter is visited for connecting emitting electrode in described tunnel, and one or more pairs of described receiving electrode is connected with described data collector.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520549657.3U CN204790022U (en) | 2015-07-27 | 2015-07-27 | Tunnel is visited water electromagnetic emission machine, transmitting system and is visited water system |
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| CN201520549657.3U CN204790022U (en) | 2015-07-27 | 2015-07-27 | Tunnel is visited water electromagnetic emission machine, transmitting system and is visited water system |
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| CN204790022U true CN204790022U (en) | 2015-11-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112255691A (en) * | 2020-11-09 | 2021-01-22 | 高军 | Method for detecting deep fracture geology by induced polarization composite frequency |
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2015
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112255691A (en) * | 2020-11-09 | 2021-01-22 | 高军 | Method for detecting deep fracture geology by induced polarization composite frequency |
| CN112255691B (en) * | 2020-11-09 | 2024-02-02 | 高军 | Deep fracture geological method for detecting excitation composite frequency |
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