CN102841266A - Vertical geoelectric field instrument and observation method thereof - Google Patents
Vertical geoelectric field instrument and observation method thereof Download PDFInfo
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- CN102841266A CN102841266A CN 201110169903 CN201110169903A CN102841266A CN 102841266 A CN102841266 A CN 102841266A CN 201110169903 CN201110169903 CN 201110169903 CN 201110169903 A CN201110169903 A CN 201110169903A CN 102841266 A CN102841266 A CN 102841266A
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Abstract
The invention discloses a vertical geoelectric field instrument and an observation method of the vertical geoelectric field instrument. The vertical geoelectric field instrument comprises an observation well, a shielding ring, five electrodes, a polyvinyl chloride (PVC) tube, a signal line calibrating module and a differential input module. The five electrodes are sequentially and vertically embedded in the observation well at equal intervals, an electrode E and an electrode A serve as calibrating electrodes to achieve calibration of the geoelectric field instrument and guarantee the normal operation of the instrument, an electrode D, an electrode C and an electrode B in the middle serve as response electrodes, wherein the electrode C serves as a reference electrode of differential input, and the three electrodes send induced voltage signals to an input end in a differential mode for filtering amplification. The vertical geoelectric field instrument adopts an electrode vertical installation mode, signal calibration and a differential input mode to have few requirements on observation fields, effectively avoid external disturbances, and enable a back stage circuit to obtain correct and effective voltage signals. The PVC tube is used for supporting the installation of the electrodes conveniently according to specified electorde distances, and the shielding ring is directly connected with the geoelectric field instrument for shading interference signals.
Description
Technical field:
The present invention relates to a kind of instrument and observation procedure of observing telluric electricity field, specifically through measure a kind of observation procedure that telluric electricity field changes before the earthquake preparation with electric field instrument vertically.
Background technology:
Used earth electric field observation procedure is exactly that 20 world's the mid-80s use the observation of digitizing earth electric field appearance to telluric electricity field at present, is grouped into by potential electrode, measuring circuit, surveying instrument and data processing division.Its observation device system lays according to the observation procedure of " multi-direction, multipole distance ".The general measure electrode carries out layout with north and south, thing, northwest (NW) respectively, and each surveys item two the survey roads that have all that one is long and the other is short.The not weak point of existing earth electric field appearance observation is bigger to the observation site requirements of seismograph station, and the place that institute's cloth electrode takies more is just big more, and maximum in addition shortcoming is exactly that antijamming capability is more weak.Be subject to like extra-high voltage transmission, Rail Transit System, large-scale electric equipment, metalloid piping system and to the mutagenic metalloid pipeline of face of land electrical structure interference etc.
Summary of the invention:
The present invention provides a kind of simple in structure, antijamming capability is strong, shared observation place is little electric field instrument vertically to above deficiency, and the present invention also provides a kind of this observation procedure of electric field instrument vertically that utilizes.
The technical scheme that the present invention adopted is:
A kind of electric field instrument vertically, through making a bite inspection well, well head is installed and is placed five non-polarizing electrodes in shading ring, the inspection well and carry out the auxiliary fixing installation through the PCV pipe.These five electrodes are divided into calibration electrode and induction electrode.
Described shading ring is mounted in a near metal ring the well head, is used for shielding the influence of external interference to telluric electricity field.
Described calibration electrode just is mounted in electrode E and the electrode A under the inspection well.Whether the certain voltage detecting induction electrode of input is installed and rationally and to induction electrode is demarcated between these two electrodes.
Described induction electrode just is mounted in three electrodes of electrode D, electrode C, electrode B of down-hole, and wherein electrode C is as the reference electrode of difference input.
A kind of utilization utilizes this observation procedure of electric field instrument vertically, and electric field instrument comprises five ground-electrodes vertically, and these five ground-electrodes are vertically imbedded in the inspection well by certain distance successively, and the electric signal of coming induction is delivered to vertically in the electric field instrument.Wherein electrode E and electrode A are as calibration electrode; Realize the demarcation of electric field instrument over the ground; Guarantee the instrument operate as normal; Middle three electrodes of D, C, B are induction electrode, and wherein electrode C is as the reference electrode of difference input, and the voltage signal that these three electrode handle inductions are come carries out the filtering amplification through the input end of delivering to of the mode of difference.PCV pipe be used for support electrode so that install by the pole span of regulation, shading ring directly is connected with earth electric field appearance signal ground and is used for shielding undesired signal.The signal access differential that induction electrode is come induction is imported amplification module, and then demarcates through calibration electrode.Adopting the difference input is in order to reduce the influence to late-class circuit of polarizing voltage that induction electrode produces.
The invention has the beneficial effects as follows: big or small otherwise high the observation place of earthquake observating station; Adopt the input of electrode difference can deduct the influence of polarizing voltage effectively to late-class circuit; The vertical installation of electrodes use deep-well can effectively be avoided high voltage power transmisson system, Rail Transit System, large-scale electric equipment, metalloid piping system and electrical structure mutagenic metalloid pipeline in the face of land is disturbed and artificial interference etc.
Description of drawings:
It in the accompanying drawing 1 electrode cloth utmost point mode synoptic diagram of the present invention.
1, inspection well 2, shading ring 3, pvc pipe 4, electrode 5, signal wire 6, calibration electrode 7, induction electrode difference are amplified input.
Embodiment:
Below in conjunction with accompanying drawing the present invention is further described:
As shown in Figure 1: this vertically electric field instrument comprise five ground-electrodes 4, these five ground-electrodes are vertically imbedded in the inspection well by certain distance successively, the electric signal of coming induction is delivered to vertically in the electric field instrument.Wherein electrode E and electrode A are as calibration electrode 6; Realize the demarcation of electric field instrument over the ground; Guarantee the instrument operate as normal; Middle three electrodes of D, C, B are induction electrode 7, and wherein electrode C is as the reference electrode of difference input, and the voltage signal that these three electrode handle inductions are come carries out the filtering amplification through the input end of delivering to of the mode of difference.PCV pipe 3 be used for support electrode so that install by the pole span of regulation, shading ring 2 directly is connected with earth electric field appearance signal ground and is used for shielding undesired signal.The signal access differential that induction electrode is come induction is imported amplification module, and then demarcates through calibration electrode.Adopting the difference input is in order to reduce the influence to late-class circuit of polarizing voltage that induction electrode produces.
Claims (4)
1. electric field instrument vertically; It is characterized in that: vertically be embedded in the inspection well 1 to five electrodes 4 successively by certain distance; Electrode E and electrode A wherein as calibration electrode; D, C, three electrodes of B are induction electrode, and this mounting means does not require observation place size basically, and shading ring 2 directly is connected with the earth electric field appearance and is used for shielding undesired signal.
2. electric field instrument vertically as claimed in claim 1 is characterized in that: calibration electrode E is to fix then its sealing to be installed through pvc pipe to be connected with A, feeds certain voltage at last and comes induction electrode is demarcated.
3. electric field instrument vertically as claimed in claim 1 is characterized in that: induction electrode D, C and B fix then its sealing to be installed through pvc pipe to be connected, and wherein induction electrode C is as the reference electrode of difference input.The voltage that induction electrode is responded to can reduce the influence of polarizing voltage to late-class circuit through difference.
4. like claim 1 or 2 or 3 or 4 described this observation procedures of electric field instrument vertically that utilize; Electric field instrument comprises five ground-electrodes vertically; These five ground-electrodes are vertically imbedded in the inspection well by certain distance successively, and the electric signal of coming induction is delivered to vertically in the electric field instrument.Wherein electrode E and electrode A are as calibration electrode; Realize the demarcation of electric field instrument over the ground; Guarantee the instrument operate as normal; Middle three electrodes of D, C, B are induction electrode, and wherein electrode C is as the reference electrode of difference input, and the voltage signal that these three electrode handle inductions are come carries out the filtering amplification through the input end of delivering to of the mode of difference.PCV pipe be used for support electrode so that install by the pole span of regulation, shading ring directly is connected with earth electric field appearance signal ground and is used for shielding undesired signal.The signal access differential that induction electrode is come induction is imported amplification module, and then demarcates through calibration electrode.Adopting the difference input is in order to reduce the influence to late-class circuit of polarizing voltage that induction electrode produces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110169903 CN102841266A (en) | 2011-06-23 | 2011-06-23 | Vertical geoelectric field instrument and observation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110169903 CN102841266A (en) | 2011-06-23 | 2011-06-23 | Vertical geoelectric field instrument and observation method thereof |
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| Publication Number | Publication Date |
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| CN102841266A true CN102841266A (en) | 2012-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110169903 Pending CN102841266A (en) | 2011-06-23 | 2011-06-23 | Vertical geoelectric field instrument and observation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502734A (en) * | 2014-12-30 | 2015-04-08 | 中国科学院电子学研究所 | Capacitive electric field sensor |
| CN105092972A (en) * | 2014-05-06 | 2015-11-25 | 郑州晶微电子科技有限公司 | Hydropower monitoring instrument |
| CN108415092A (en) * | 2018-02-08 | 2018-08-17 | 北京市地震局 | A kind of deep-well geoelectric survey electrode assembly and preparation method and application |
| CN110794225A (en) * | 2019-11-14 | 2020-02-14 | 云南电网有限责任公司电力科学研究院 | High-voltage direct-current electric field detection device and preparation method thereof |
| CN111257966A (en) * | 2020-04-14 | 2020-06-09 | 中国地震局地壳应力研究所 | Anti-interference device of geoelectricity observation instrument and earthquake geoelectricity precursor observation system |
| CN116717241A (en) * | 2023-04-14 | 2023-09-08 | 中国科学院地质与地球物理研究所 | Ground receiving front-end compensation system for electromagnetic transmission of intelligent well guiding and drilling |
-
2011
- 2011-06-23 CN CN 201110169903 patent/CN102841266A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092972A (en) * | 2014-05-06 | 2015-11-25 | 郑州晶微电子科技有限公司 | Hydropower monitoring instrument |
| CN104502734A (en) * | 2014-12-30 | 2015-04-08 | 中国科学院电子学研究所 | Capacitive electric field sensor |
| CN108415092A (en) * | 2018-02-08 | 2018-08-17 | 北京市地震局 | A kind of deep-well geoelectric survey electrode assembly and preparation method and application |
| CN110794225A (en) * | 2019-11-14 | 2020-02-14 | 云南电网有限责任公司电力科学研究院 | High-voltage direct-current electric field detection device and preparation method thereof |
| CN111257966A (en) * | 2020-04-14 | 2020-06-09 | 中国地震局地壳应力研究所 | Anti-interference device of geoelectricity observation instrument and earthquake geoelectricity precursor observation system |
| CN116717241A (en) * | 2023-04-14 | 2023-09-08 | 中国科学院地质与地球物理研究所 | Ground receiving front-end compensation system for electromagnetic transmission of intelligent well guiding and drilling |
| CN116717241B (en) * | 2023-04-14 | 2024-02-09 | 中国科学院地质与地球物理研究所 | Ground receiving front-end compensation system for electromagnetic transmission of intelligent well guiding and drilling |
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Application publication date: 20121226 |