CN104360399A - Method and device for detecting underground transient electromagnetism in grounded source through long wire - Google Patents
Method and device for detecting underground transient electromagnetism in grounded source through long wire Download PDFInfo
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Abstract
The invention relates to a method and a device for detecting underground transient electromagnetism in a grounded source through a long conductor wire; the device comprises a grounded wire as an emission source and an underground receiving device as a receiver; the grounded wire is arranged on the ground; receiving probes are arranged point by point in a hole along the direction of a drill hole or in an underground passage along the direction of the passage by utilizing the original drill hole or the original underground passage; the grounded wire is composed of three groups of grounded wires, wherein the two groups of grounded wires are parallel to each other and simultaneously vertical to the third group of grounded wires. According to the device for detecting the underground transient electromagnetism in the grounded source through the long wire disclosed by the invention, an electric field generated by the grounded wire is intersected with a stratum having different electrical resistivity values; detection of a low-resistance object is easily carried out according to induced current excited by a horizontal component; detection of a high-resistance object is easily carried out according to charge on a stratum electrical interface induced by a vertical component; compared with a large loop, by means of the long wire, the device has better flexibility; and furthermore, the high-resistance object is also detected easily.
Description
Technical field
The present invention relates to a kind of geophysical reconnaissance method, specifically, relate to a kind of transient electromagnetic detecting method under long lead ground connection seedbed.
Background technology
Transient electromagnetic field method (Transient Electromagnetic Method is called for short TEM) is a kind of time domain artificial source electromagnetic exploration method be based upon on electromagnetic induction principle basis.It utilizes earth-free loop line or earth lead to launch primary field to underground, closes and have no progeny, measure the inducted secondary field that produced by underground medium over time, reach a kind of geophysical exploration method finding various geologic objective at primary field.
Fig. 1 is the equipment figure of traditional ground Loop source transient electromagnetic method, and wherein applying more is Genter loop device, namely at surface deployment loop line, measures at loop line center point, because this device is abnormal simple, is easy to explain, is widely used.
But when when ground receiver, electromagnetic field needs to propagate into ground receiving wastewater facility from out-of-the way position, could be collected.Time and the distance of electromagnetic field propagation are all long, and are very easily subject to the impact of heterogeneous body between emissive source and receiving trap.If can receive near the position of abnormal object body in underground, then electromagnetic field propagate time and distance relatively short, and farthest avoid send out, receive between the impact of heterogeneous body, can largest outliers be observed, substantially increase the detectivity to objective body.
Traditional ground well transient electromagnetic method, the ground exactly near boring arranges that earth-free coil is as emissive source, and with receiving transducer in the borehole along the inducted secondary field that boring direction point-to-point measurement underground medium produces, its Method And Principle as shown in Figure 2.Bi-directional pulse current is provided with in earth-free loop line, thus excitation electromagnetic field, under the excitation of this electromagnetic field, underground medium is responded to and is produced vortex current, when the pulse current of transmitting loop jumps to zero from peak value, exciting field disappears immediately, and the inductive loop in underground medium does not disappear immediately, but having an attenuation process, the feature of this process is relevant with underground electrical structure.By the variation characteristic of inducted secondary field on room and time in research well, the object of research boring electrical structure distribution around can be reached, thus can the geologic body by well, near shaft bottom be differentiated accurately, or infer space distribution and the bearing of trend of having seen ore body.
When ground well TEM measures, the feature of the ground well TEM response curve observed, depends on electric conductivity and the geometric shape of conduction ore body on the one hand, also relevant with the mutual alignment between transmitting loop, conductor, receiving transducer on the other hand.In real work, when existing data is not enough to accurately locate anomalous body, multiple transmitting loop can be arranged, as Fig. 3 in ground different azimuth.Each loop line excites Shi Douyong to pop one's head in and measures one time in the borehole, obtains the response curve of different characteristic, thus obtains abundanter ground telecommunications breath, contributes to qualitative, the quantitative interpretation to anomalous body.
Symmetry due to Loop source makes the field effect of cancelling out each other, energy is decayed comparatively fast in the earth formation, investigation depth is more shallow, not easily lay when the length of side is larger, Loop source only can produce tangential electric field component, is easy to excite induction current in low resistivity zone, very favourable to detection low resistivity zone, but when detecting resistive formation, Loop source is not best device form.
When receiving space and being this approximate horizontal situation in coal mine roadway or tunnel, the form become as shown in Figure 5 is equipped in conventional ground well observation.Namely investigation depth is ensured at the larger coil of surface deployment, enhancing supply current; Down-hole receives along tunnel, and receiving coil is comparatively near apart from objective body, and Received signal strength is strong, can improve resolution and detection accuracy, strengthens " side is looked " ability.Meanwhile, change the relative position of receiving coil in ground launch coil and tunnel, or change the method direction of receiving coil, can be used for multilayer Mined-Out Areas.
Summary of the invention
For above-mentioned deficiency of the prior art, the invention provides and a kind ofly improve transient electromagnetic detection device under the long lead ground connection seedbed of surveying accuracy and accuracy.
The technical solution used in the present invention is:
Transient electromagnetic detection device under a kind of long lead ground connection seedbed,
Comprise ground launch source earth lead and sub-receiver device; Earth lead is arranged in ground;
Utilize existing boring on ground or utilize existing underground passage, in hole, arranging receiving transducer along boring direction or at underground passage along roadway direction pointwise; Described earth lead is made up of three groups of earth leads; Wherein two groups parallel to each other, simultaneously vertical with the 3rd group.
The length of described earth lead is substantially equal to the distance of earth lead and boring and is substantially equal to the depth of burial of destination layer.
The length of described earth lead is 800 meters to 1500 meters.
The emissive power of described long earth lead emissive source is 30 kilowatts.
A kind of transient electromagnetic detecting method under long lead ground connection seedbed, is provided with bi-directional pulse current in earth lead, and earth lead produces excitation electromagnetic field, and underground medium is responded to and produces vortex current; Receiving transducer along the inducted secondary field that boring direction point-to-point measurement underground medium produces, is launched each group be arranged in three groups of earth leads on ground in the borehole respectively; Receiving transducer along boring direction layout receives the inducted secondary field signal that three groups of emissive sources produce at underground medium respectively.
Transient electromagnetic detection device under a kind of long lead ground connection seedbed,
Comprise the earth lead as emissive source and sub-receiver device; Earth lead is arranged on ground;
In coal mine roadway or tunnel, receiving transducer is arranged in pointwise in the horizontal direction; Described earth lead is made up of three groups of earth leads; Wherein two groups parallel to each other, simultaneously vertical with the 3rd group.
A kind of transient electromagnetic detecting method under long lead ground connection seedbed, in earth lead, be provided with bipolarity squared-pulse current, in underground excitation electromagnetic field, underground medium is responded to and is produced vortex current; Receiving transducer in coal mine roadway or tunnel in the horizontal direction pointwise receive the inducted secondary field that underground medium produces, respectively each group be arranged in three groups of earth leads on ground is launched; The receiving transducer arranged in the horizontal direction in coal mine roadway or tunnel receives the inducted secondary field signal that three groups of emissive sources produce at underground medium respectively.
The beneficial effect of hinge structure of the present invention:
Transient electromagnetic detection device under long lead ground connection seedbed of the present invention, the electric field of earth lead is crossing with the stratum with different resistivity value, the induction current that horizontal component excites is conducive to the detection of post non of low resistance body, vertical component is conducive to the detection of high resistance body at the electric charge that stratum electrical interface is responded to, under rectangular coordinate, whole 6 components of electromagnetic field all have detectivity, for deep large ore deposit (Tibetan) information detection and extraction principle and method provide more possibility; The laying of long lead has greater flexibility compared with large loop line.
Accompanying drawing explanation
The equipment figure of Fig. 1 tradition Loop source transient electromagnetic method;
Fig. 2 ground well transient electromagnetic principle schematic;
Fig. 3 ground well transient electromagnetic operating diagram;
Fig. 4 ground connection seedbed of the present invention well (vertically) transient electromagnetic device schematic diagram;
Fig. 5 conventional Loop source ground well Transient electromagnetic measure device;
Fig. 6 ground connection seedbed of the present invention well (level) transient electromagnetic equipment schematic diagram;
Fig. 7 adopts now methodical ground connection seedbed well transient electromagnetic test pattern;
Fig. 8 adopts ground connection seedbed well transient electromagnetic test comparison result figure of the present invention.
Embodiment
Referring to drawings and Examples, the present invention will be described in detail:
Accompanying drawing 1-8 is known, transient electromagnetic detection device under a kind of long lead ground connection seedbed,
Comprise ground launch source earth lead and sub-receiver device; Earth lead is arranged in ground;
Utilize existing boring on ground or utilize existing underground passage, in hole, arranging receiving transducer along boring direction or at underground passage along roadway direction pointwise; Described earth lead is made up of three groups of earth leads; Wherein two groups parallel to each other, simultaneously vertical with the 3rd group.
The length of described earth lead is substantially equal to the distance of earth lead and boring and is substantially equal to the depth of burial of destination layer.
The length of described earth lead is 800 meters to 1500 meters.
The emissive power of described long earth lead emissive source is 30 kilowatts.
A kind of transient electromagnetic detecting method under long lead ground connection seedbed, is provided with bi-directional pulse current in earth lead, and earth lead produces excitation electromagnetic field, and underground medium is responded to and produces vortex current; Receiving transducer along the inducted secondary field that boring direction point-to-point measurement underground medium produces, is launched each group be arranged in three groups of earth leads on ground in the borehole respectively; Receiving transducer along boring direction layout receives the inducted secondary field signal that three groups of emissive sources produce at underground medium respectively.
Transient electromagnetic detection device under a kind of long lead ground connection seedbed,
Comprise the earth lead as emissive source and sub-receiver device; Earth lead is arranged on ground;
In coal mine roadway or tunnel, receiving transducer is arranged in pointwise in the horizontal direction; Described earth lead is made up of three groups of earth leads; Wherein two groups parallel to each other, simultaneously vertical with the 3rd group.
A kind of transient electromagnetic detecting method under long lead ground connection seedbed, in earth lead, be provided with bipolarity squared-pulse current, in underground excitation electromagnetic field, underground medium is responded to and is produced vortex current; Receiving transducer in coal mine roadway or tunnel in the horizontal direction pointwise receive the inducted secondary field that underground medium produces, respectively each group be arranged in three groups of earth leads on ground is launched; The receiving transducer arranged in the horizontal direction in coal mine roadway or tunnel receives the inducted secondary field signal that three groups of emissive sources produce at underground medium respectively.
The beneficial effect of hinge structure of the present invention:
Transient electromagnetic detection device under long lead ground connection seedbed of the present invention, the electric field of earth lead is crossing with the stratum with different resistivity value, the induction current that horizontal component excites is conducive to the detection of post non of low resistance body, vertical component is conducive to the detection of high resistance body at the electric charge that stratum electrical interface is responded to, under rectangular coordinate, whole 6 components of electromagnetic field all have detectivity, for deep large ore deposit (Tibetan) information detection and extraction principle and method provide more possibility; The laying of long lead has greater flexibility compared with large loop line.
For tunnel or reception space, tunnel, this patent proposes: adopt ground connection source to replace Loop source, be exactly that ground configuration three groups of earth leads on tunnel or tunnel are as emissive source, respectively each the group wire source in these three groups is launched, with popping one's head in underground along the inducted secondary field that tunnel or direction, tunnel point-to-point measurement underground medium produce, its Method And Principle as shown in Figure 3.Bipolarity squared-pulse current is provided with in earth lead, in underground excitation electromagnetic field, under the excitation of this electromagnetic field, underground medium is responded to and is produced vortex current, when the pulse current of transmitting loop jumps to zero from peak value, exciting field disappears immediately, and the inductive loop in underground medium does not disappear immediately, but having a decay process, the feature of this process distributes relevant with underground electrical structure.By the variation characteristic of inducted secondary field on room and time in research well, the object of Electrical distribution structure around research boring can be reached, thus space distribution and the bearing of trend of inferring objective body can be found.
In order to the superiority of patent of invention is described, The present invention gives test comparison result.
Fig. 7 and Fig. 8 is ground connection seedbed well transient electromagnetic test comparison result figure.Wherein, Fig. 7 is the observed result adopting the observation program of Fig. 1 to obtain; Fig. 8 is the observed result adopting the scheme of Fig. 6 to obtain.As can be seen from Figure 7, adopt classic method, together, resolution degree is bad for two abnormal superpositions, and as can be seen from Figure 8, adopt this patent of invention method to observe, two exceptions are obviously separated, and illustrate objective body resolution degree higher.
Claims (7)
1. a transient electromagnetic detection device under long lead ground connection seedbed, is characterized in that:
Comprise as the earth lead of emissive source with as the sub-receiver device received; Earth lead is arranged in ground;
Utilize existing boring on ground or utilize existing underground passage, in hole, arranging receiving transducer along boring direction or at underground passage along roadway direction pointwise; Described earth lead is made up of three groups of earth leads; Wherein two groups parallel to each other, simultaneously vertical with the 3rd group.
2. transient electromagnetic detection device under long lead ground connection seedbed according to claim 1, is characterized in that:
The length of described earth lead equals the distance of earth lead and boring and equals the depth of burial of destination layer.
3. transient electromagnetic detection device under long lead ground connection seedbed according to claim 2, is characterized in that:
The length of described earth lead is 800 meters to 1500 meters.
4. transient electromagnetic detection device under long lead ground connection seedbed according to claim 1, is characterized in that:
The emissive power of described long earth lead emissive source is 30 kilowatts.
5. a transient electromagnetic detecting method under long lead ground connection seedbed, is provided with bi-directional pulse current in earth lead, and earth lead produces excitation electromagnetic field, and underground medium is responded to and produces vortex current; Receiving transducer along the inducted secondary field that boring direction point-to-point measurement underground medium produces, is characterized in that, launches respectively to each group be arranged in three groups of earth leads on ground in the borehole; Receiving transducer along boring direction layout receives the inducted secondary field signal that three groups of emissive sources produce at underground medium respectively.
6. a transient electromagnetic detection device under long lead ground connection seedbed, is characterized in that,
Comprise as the earth lead of emissive source with as the sub-receiver device received; Earth lead is arranged on ground; It is characterized in that: in coal mine roadway or tunnel, receiving transducer is arranged in pointwise in the horizontal direction; Described earth lead is made up of three groups of earth leads; Wherein two groups parallel to each other, simultaneously vertical with the 3rd group.
7. a transient electromagnetic detecting method under long lead ground connection seedbed, is provided with bipolarity squared-pulse current in earth lead, and in underground excitation electromagnetic field, underground medium is responded to and produces vortex current; Receiving transducer in coal mine roadway or tunnel in the horizontal direction pointwise receive the inducted secondary field that underground medium produces, it is characterized in that, respectively each group be arranged in three groups of earth leads on ground is launched; The receiving transducer arranged in the horizontal direction in coal mine roadway or tunnel receives the inducted secondary field signal that three groups of emissive sources produce at underground medium respectively.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467460A (en) * | 2015-12-28 | 2016-04-06 | 中国石油天然气集团公司 | Method and device for electromagnetic prospecting |
| CN105549100A (en) * | 2016-01-07 | 2016-05-04 | 华北科技学院 | Mine transient electromagnetic detection apparatus and method based on U-shaped helical source |
| CN107861159A (en) * | 2017-10-19 | 2018-03-30 | 中煤科工集团西安研究院有限公司 | Double Electric Dipole ground well transient electromagnetic detecting methods |
| CN107884834A (en) * | 2017-10-19 | 2018-04-06 | 中煤科工集团西安研究院有限公司 | Homologous more transient electromagnetic detecting methods |
| CN108287367A (en) * | 2018-02-11 | 2018-07-17 | 合肥晟北辰智能科技有限公司 | Combined detection system and application process in a kind of ground-hole based on time domain electromagnetic method |
| CN109884720A (en) * | 2019-03-21 | 2019-06-14 | 武汉长盛工程检测技术开发有限公司 | Determine the ground well three-dimensional combination frequency electromagnetic exploration apparatus and method of watery |
| CN111856595A (en) * | 2020-07-28 | 2020-10-30 | 广州海洋地质调查局 | Large loop source transient electromagnetic global apparent resistivity determination method and processing terminal |
| CN111965718A (en) * | 2019-05-20 | 2020-11-20 | 中国石油天然气集团有限公司 | Electromagnetic data acquisition method and device based on four-direction excitation |
| CN112433254A (en) * | 2020-12-03 | 2021-03-02 | 长江大学 | Method for exploring water disaster position of coal mine working face |
| CN113009559A (en) * | 2021-03-02 | 2021-06-22 | 中国科学院地质与地球物理研究所 | Earthquake evaluation method based on multi-type geophysical data |
| CN113093292A (en) * | 2021-04-09 | 2021-07-09 | 中国矿业大学 | Method for grouting coal seam roof through ground-hole transient electromagnetic monitoring |
| CN113960675A (en) * | 2021-10-21 | 2022-01-21 | 武汉鑫泽科技有限公司 | Method for the operational arrangement of a conduction current field |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2601119A1 (en) * | 2005-03-14 | 2006-11-02 | Mtem Ltd. | True amplitude transient electromagnetic system response measurement |
| CN102419453A (en) * | 2011-07-15 | 2012-04-18 | 中国科学院地质与地球物理研究所 | Long-lead source transient electromagnetic ground-air detecting method |
| CN103995296A (en) * | 2014-06-11 | 2014-08-20 | 中煤科工集团西安研究院有限公司 | Transient electromagnetic method ground hole detection method and device |
-
2014
- 2014-12-10 CN CN201410746452.4A patent/CN104360399B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2601119A1 (en) * | 2005-03-14 | 2006-11-02 | Mtem Ltd. | True amplitude transient electromagnetic system response measurement |
| CN102419453A (en) * | 2011-07-15 | 2012-04-18 | 中国科学院地质与地球物理研究所 | Long-lead source transient electromagnetic ground-air detecting method |
| CN103995296A (en) * | 2014-06-11 | 2014-08-20 | 中煤科工集团西安研究院有限公司 | Transient electromagnetic method ground hole detection method and device |
Non-Patent Citations (5)
| Title |
|---|
| GUO-QIANG X，ET AL.: "Understanding of Grounded-Wire TEM Sounding with Near-Source Configuration", 《J GEOPHYS REMOTE SENSING》 * |
| XUE GQ，ET AL.: "Transient Electromagnetic Method and Its Applications in China", 《J GEOPHYS REMOTE SENSING》 * |
| 刘树才等: "地面-坑道瞬变电磁灾害水源精细探查技术研究", 《第十届中国国际地球电磁学术讨论会 2011》 * |
| 张杰 等: "地—井 TEM 在危机矿山深部找矿中的应用实例", 《物探与化探》 * |
| 李功强等: "煤矿深部采区岩层富水性短偏移距瞬变电磁法探测", 《中国矿业》 * |
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| CN105467460A (en) * | 2015-12-28 | 2016-04-06 | 中国石油天然气集团公司 | Method and device for electromagnetic prospecting |
| CN105549100A (en) * | 2016-01-07 | 2016-05-04 | 华北科技学院 | Mine transient electromagnetic detection apparatus and method based on U-shaped helical source |
| CN105549100B (en) * | 2016-01-07 | 2017-08-25 | 华北科技学院 | Transient Electromagnetic Method in Mine apparatus and method based on U-shaped helical source |
| CN107861159A (en) * | 2017-10-19 | 2018-03-30 | 中煤科工集团西安研究院有限公司 | Double Electric Dipole ground well transient electromagnetic detecting methods |
| CN107884834A (en) * | 2017-10-19 | 2018-04-06 | 中煤科工集团西安研究院有限公司 | Homologous more transient electromagnetic detecting methods |
| CN108287367A (en) * | 2018-02-11 | 2018-07-17 | 合肥晟北辰智能科技有限公司 | Combined detection system and application process in a kind of ground-hole based on time domain electromagnetic method |
| CN108287367B (en) * | 2018-02-11 | 2023-07-18 | 合肥晟北辰智能科技有限公司 | Ground-hole joint detection system based on time domain electromagnetic method and application method |
| CN109884720B (en) * | 2019-03-21 | 2021-07-30 | 武汉长盛工程检测技术开发有限公司 | Device and method for determining three-dimensional composite frequency electromagnetic detection of water-rich ground well |
| CN109884720A (en) * | 2019-03-21 | 2019-06-14 | 武汉长盛工程检测技术开发有限公司 | Determine the ground well three-dimensional combination frequency electromagnetic exploration apparatus and method of watery |
| CN111965718A (en) * | 2019-05-20 | 2020-11-20 | 中国石油天然气集团有限公司 | Electromagnetic data acquisition method and device based on four-direction excitation |
| CN111965718B (en) * | 2019-05-20 | 2023-09-26 | 中国石油天然气集团有限公司 | Electromagnetic data acquisition method and device based on four-direction excitation |
| CN111856595A (en) * | 2020-07-28 | 2020-10-30 | 广州海洋地质调查局 | Large loop source transient electromagnetic global apparent resistivity determination method and processing terminal |
| CN112433254A (en) * | 2020-12-03 | 2021-03-02 | 长江大学 | Method for exploring water disaster position of coal mine working face |
| CN113009559A (en) * | 2021-03-02 | 2021-06-22 | 中国科学院地质与地球物理研究所 | Earthquake evaluation method based on multi-type geophysical data |
| CN113009559B (en) * | 2021-03-02 | 2022-02-18 | 中国科学院地质与地球物理研究所 | Earthquake evaluation method based on multi-type geophysical data |
| CN113093292A (en) * | 2021-04-09 | 2021-07-09 | 中国矿业大学 | Method for grouting coal seam roof through ground-hole transient electromagnetic monitoring |
| CN113960675A (en) * | 2021-10-21 | 2022-01-21 | 武汉鑫泽科技有限公司 | Method for the operational arrangement of a conduction current field |
| CN113960675B (en) * | 2021-10-21 | 2024-04-05 | 武汉鑫泽科技有限公司 | Working arrangement method of conductive flow field |
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