CN105549095A - Multipolar electric measurement probe for detecting dam vertical antiseepage project - Google Patents
Multipolar electric measurement probe for detecting dam vertical antiseepage project Download PDFInfo
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- CN105549095A CN105549095A CN201511022218.8A CN201511022218A CN105549095A CN 105549095 A CN105549095 A CN 105549095A CN 201511022218 A CN201511022218 A CN 201511022218A CN 105549095 A CN105549095 A CN 105549095A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/02—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current
- G01V3/04—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current using dc
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/40—Investigating fluid-tightness of structures by using electric means, e.g. by observing electric discharges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/041—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body
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Abstract
The invention discloses a multipolar electric measurement probe for detecting a dam vertical antiseepage project. Electrode series arrangement satisfies high-density electrical method analysis and interpretation; each electrode is insulated from a probe rod core, and each electrode is connected with a multi-core cable in the rod core; the surface of the probe is provided with a sufficient wear-resistant insulation layer; the probe can be mainly applied to nondestructive detection of the quality of the dam vertical antiseepage project and project defects and damage; by applying the probe, the probe can go into a dam body and a foundation soil layer for close-distance accurate detection of the dam vertical antiseepage project; by using the probe, the problem of fuzziness of ground electrical method exploration for underground structure physical property interpretation is overcome; and damage to a dam structure by use of an electric logging method is also avoided, and the nondestructive detection is carried out.
Description
Technical field
The invention belongs to a kind of multipole electrical measuring probe detecting dykes and dams preventing perpendicular seepage according to multi-electrode resistivity imaging survey theory.
Background technology
China is vast in territory, and river, canal and channel gather, and the dyke building of various grade is almost throughout all parts of the country.For reducing flood disaster, the antiseepage of dykes and dams (with levee foundation) is most important, various lots of engineering again.The seepage control project (particularly middle-size and small-size dykes and dams) of current dykes and dams (with levee foundation) mainly adopts vertical seepage control method, and namely vertical thin-film is anti-blends various cut-pff wall.After preventing perpendicular seepage is constructed, the detection of seepage control project being constructed to situation and defect and hidden danger is a difficult problem.
Mainly wish, by the method to the harmless various geophysical survey of dykes and dams, to comprise electrical method, seismic method to the method that seepage control project detects at present, and trace method etc.Wherein electrical method most convenient is easy.Again with DC electrical method in various electrical method, particularly high density DC electrical method is the most cheap and facilitate.But as a kind of high density DC electrical method of surface electric survey new technology, the defect of its essence is that the degree of depth is larger, the information of its detection is fuzzyyer, can not detect the important informations such as the degree of depth as seepage control project is arranged, damage location and size accurately.As the electrical logging of vertical exploration, because near the position drilling well of seepage control project on levee body, must can cause the damage to levee body, and cost greatly produce effects little (investigative range is limited).
Summary of the invention
Goal of the invention: the invention provides a kind of multipole electrical measuring probe for detecting dykes and dams preventing perpendicular seepage that can insert levee body and levee foundation deep under ground, easy and simple to handle, with low cost, the detection of a series of multiple spot can be carried out along seepage control project.
Technical scheme: a kind of multipole electrical measuring probe for detecting dykes and dams preventing perpendicular seepage, comprises probe, feeler lever, measurement instrument, and wherein, described detecting head surface is provided with insulation course; Described feeler lever inside is provided with bar core, has multi-core cable in bar core; Described probe is arranged several electrodes, each electrode and feeler lever bar core insulation, and each electrode is connected with Ground Measuring Device respectively by polycore cable in bar core.
Particularly, described Ground Measuring Device is used for multipole electroprobe measurement operation and automatic record, data processing and becomes figure; There is display panels and binding post, jack and operation control knob required for the measurement of multipole electroprobe; There is the automatic record, data processing and the software becoming figure that are specifically designed to multipole electroprobe measurement data, and the hardware system adapted with it.
Particularly, several electrodes described are the electrode of equidistant setting, and the spacing of each electrode can obtain apart from electroprobe respective electrode change in apparent resistivity accurately in suitable distance.
Particularly, described each electrode, under the condition of penetration resistance 10% not increasing electroprobe, all protrudes from the electroprobe body of rod 2 millimeters.
Particularly, described insulation course adopts the abrasion-proof insulating layer of fiber and resin compounded, and its thickness is greater than 1 millimeter.
Particularly, described feeler lever length is corresponding to the effective range of probe, and the effective length often saving feeler lever all equals 1 effective range of popping one's head in; Can more piece connect, feeler lever is hollow, can make polycore cable convenient through.
Particularly, described feeler lever has umbrella shape threaded connector and interface; Also there is decussate dual-mouth, can be engaged with pressing machine jig.
More specifically, described in be arranged on pressing machine jig under pressing machine pressured column, be engaged with feeler lever; Help feeler lever and probe orientation.
Particularly, described cable appearance is provided with rubber insulation.
Particularly, described electrode is ring electrode.
Beneficial effect: compared with prior art, the invention has the advantages that: utilize ground high density DC electrical method measuring principle, be applied to perpendicular to ground, in the levee body of pressing close to seepage control project and levee foundation, seepage control project is detected; And the diameter of multipole electrical measuring probe is very little, can not damage levee body; Easy and simple to handle, with low cost, the detection of a series of multiple spot can be carried out along seepage control project.
Accompanying drawing explanation
Fig. 1 is multipole electrical measuring probe principle of work schematic diagram;
Fig. 2 is multipole electrical measuring probe probe schematic diagram;
Fig. 3 is multipole electrical measuring probe feeler lever schematic diagram;
Fig. 4 is pressing machine jig schematic diagram;
Fig. 5 is measuring instrument principle of work schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further.
As Figure 1-3, a kind of multipole electrical measuring probe for detecting dykes and dams preventing perpendicular seepage, by one group of separate electrode, on the equidistant probe being arranged on multipole electrical measuring probe; Probe is connected on more piece feeler lever, and device manually, can be pressed into deep under ground by probe vertical; Transmitting electrode is arranged on earth's surface; Electrode in probe, for measuring potential difference (PD) and apparent resistivity.
Multipole electrical measuring probe of the present invention comprises: probe, feeler lever, cable, jig, measurement instrument.
Multipole electrical measuring probe is popped one's head in:
Probe is provided with a series of ring electrode; Electrode surface has anti-polarization coating; Each electrode all strictly insulate with bar core, independently of one another by polycore cable and the ground survey Instrument connection of bar in-core; The spacing of each electrode is equal successively, and its spacing can ensure the change obtaining apparent resistivity accurately in electroprobe certain limit, to ensure the needs that high density calculates.
For ensureing under the condition of penetration resistance significantly not increasing electroprobe, ensure each electrode at work can with soil body good contact, each electrode all protrudes from the electroprobe body of rod 2 millimeters.
There is adequate thickness indehiscent abrasion-proof insulating layer again on electroprobe body of rod surface.Body of rod surface have employed the abrasion-proof insulating layer of fiber and resin compounded.Its thickness is greater than 1 millimeter.
Multipole electrical measuring probe feeler lever, cable and jig:
The effect of feeler lever step by step probe is pushed to the predetermined degree of depth to carry out continuous coverage.The length often saving feeler lever is corresponding to the effective range of probe, and the effective length often saving feeler lever all equals 1 effective range of popping one's head in; Can successively connect; Feeler lever is hollow, can make polycore cable convenient through.So-called " effective range of probe " refers to: set the spacing of the upper adjacent electrode of probe as D, the electrode on probe adds up to N, and for ensureing that the data of each ranging have the overlap joint of repetition, to check and adjustment, " effective range of probe " is DG (N-2).
For ensureing that feeler lever orientation pushes the function of probe, often saving feeler lever has the decussate dual-mouth (draw-in groove) agreed with mutually with the chuck of earth's surface press-in device.
For ease of feeler lever convenience, accurately, securely connect, often save feeler lever and all there is identical umbrella shape threaded connector and interface.
Feeler lever body of rod surface has the abrasion-proof insulating layer of the compound the same with probe.
Feeler lever is hollow tubular, can make in feeler lever polycore cable convenient through.Polycore cable appearance has reliable rubber insulation.
As shown in Figure 4, sending feeler lever for realizing directed heap, devising special jig.This jig ensure that and is closely engaged with feeler lever at work, to help the orientation of feeler lever and probe.Under this jig is fixed on the pressured column of pressing machine, bears and transmit the pressure of pressing machine pressured column.
Multipole electrical measuring probe measuring instrument:
As shown in Figure 5, multipole electrical measuring probe measuring instrument has following functions: the function receiving multipole signal and switch and control; Contrapolarization function; Bulk processing and the adjustment functions such as signal amplification, filtering; Data display and writing function; Figure or image become figure and Presentation Function.In preliminary test, the one-tenth figure of graph image is undertaken by computing machine.Graphicly can be completed by fixing by measuring instrument after test and maturation on probation.
The present invention, by realizing the theoretical combination with Method of Electrical Wells of ground multi-electrode resistivity imaging survey, carries out dykes and dams levee foundation nodestructive testing, can detect situation in deep of sub-bottom changes and levee foundation and hidden danger accurately; Its cost is significantly less than any electrical prospecting method in the past.
The present invention is applicable to detect the fanout free region of dykes and dams vertical seepage-proof engineering quality and engineering disease, is particularly useful for the detection of the seepage control project such as vertical laying plastic film and cut-pff wall; Also be applicable to the exploration of the detection of earth embankment and earth dam structure and disease, roadbed and structure foundation, and there is in soil layer the detection of foreign matter of different electrical characteristics; The various cause of water conservancy, traffic, the energy, building, national defence etc. can be widely used in.
Claims (10)
1. for detecting a multipole electrical measuring probe for dykes and dams preventing perpendicular seepage, it is characterized in that: comprise probe, feeler lever, measurement instrument, wherein, described detecting head surface is provided with insulation course; Described feeler lever inside is provided with bar core, has multi-core cable in bar core; Described probe is arranged several electrodes, each electrode and feeler lever bar core insulation, and each electrode is connected with Ground Measuring Device respectively by polycore cable in bar core.
2. the multipole electrical measuring probe for detecting dykes and dams preventing perpendicular seepage according to claim 1, is characterized in that: described Ground Measuring Device is used for multipole electroprobe and measures operation and automatic record, data processing and become figure; There is display panels and binding post, jack and operation control knob required for the measurement of multipole electroprobe; There is the automatic record, data processing and the software becoming figure that are specifically designed to multipole electroprobe measurement data, and the hardware system adapted with it.
3. the multipole electrical measuring probe for detecting dykes and dams preventing perpendicular seepage according to claim 1, it is characterized in that: several electrodes described are the electrode of equidistant setting, the spacing of each electrode can obtain apart from electroprobe respective electrode change in apparent resistivity accurately in suitable distance.
4. the multipole electrical measuring probe for detecting dykes and dams preventing perpendicular seepage according to claim 1, is characterized in that: described each electrode, under the condition of penetration resistance 10% not increasing electroprobe, all protrudes from the electroprobe body of rod 2 millimeters.
5. the multipole electrical measuring probe for detecting dykes and dams preventing perpendicular seepage according to claim 1, is characterized in that: described insulation course adopts the abrasion-proof insulating layer of fiber and resin compounded, and its thickness is greater than 1 millimeter.
6. the multipole electrical measuring probe for detecting dykes and dams preventing perpendicular seepage according to claim 1, is characterized in that: described feeler lever length is corresponding to the effective range of probe, and the effective length often saving feeler lever all equals 1 effective range of popping one's head in; Can more piece connect, feeler lever is hollow.
7. the multipole electrical measuring probe for detecting dykes and dams preventing perpendicular seepage according to claim 1, is characterized in that: described feeler lever has umbrella shape threaded connector and interface; Also there is decussate dual-mouth, can be engaged with pressing machine jig.
8. the multipole electrical measuring probe for detecting dykes and dams preventing perpendicular seepage according to claim 7, is characterized in that: described in be arranged on pressing machine jig under pressing machine pressured column, be engaged with feeler lever; Help feeler lever and probe orientation.
9. the multipole electrical measuring probe for detecting dykes and dams preventing perpendicular seepage according to claim 1, is characterized in that: described cable appearance is provided with rubber insulation.
10. the multipole electrical measuring probe for detecting dykes and dams preventing perpendicular seepage according to claim 1, is characterized in that: described electrode is ring electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201511022218.8A CN105549095A (en) | 2015-12-30 | 2015-12-30 | Multipolar electric measurement probe for detecting dam vertical antiseepage project |
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| CN201511022218.8A CN105549095A (en) | 2015-12-30 | 2015-12-30 | Multipolar electric measurement probe for detecting dam vertical antiseepage project |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154335A (en) * | 2016-08-30 | 2016-11-23 | 浙江广川工程咨询有限公司 | For improving device and the Electrical imaging oriented detection method of hidden danger body of hardening dykes and dams contact |
| CN106225999A (en) * | 2016-08-15 | 2016-12-14 | 上海科勒电子科技有限公司 | Multipoint mode probe and leakage sensor |
| CN109632577A (en) * | 2019-02-20 | 2019-04-16 | 自然资源部第海洋研究所 | A kind of cut-pff wall defective locations detection device and detection method |
| CN109738137A (en) * | 2019-01-02 | 2019-05-10 | 山东交通学院 | Earth and rockfill dam leakage real-time monitoring and fast diagnosis method based on image comparison |
| CN110850479A (en) * | 2019-11-26 | 2020-02-28 | 自然资源部第一海洋研究所 | Three-dimensional resistivity in-situ monitoring probe |
| CN114113225A (en) * | 2021-12-02 | 2022-03-01 | 北方民族大学 | Post-disaster damage detection method and device for shallow pile foundation of farm shed |
| CN117721859A (en) * | 2024-02-18 | 2024-03-19 | 水利部交通运输部国家能源局南京水利科学研究院 | System and method for detecting seepage-proofing structure defects and depth in layered soil foundation |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225999A (en) * | 2016-08-15 | 2016-12-14 | 上海科勒电子科技有限公司 | Multipoint mode probe and leakage sensor |
| CN106154335A (en) * | 2016-08-30 | 2016-11-23 | 浙江广川工程咨询有限公司 | For improving device and the Electrical imaging oriented detection method of hidden danger body of hardening dykes and dams contact |
| CN109738137A (en) * | 2019-01-02 | 2019-05-10 | 山东交通学院 | Earth and rockfill dam leakage real-time monitoring and fast diagnosis method based on image comparison |
| CN109632577A (en) * | 2019-02-20 | 2019-04-16 | 自然资源部第海洋研究所 | A kind of cut-pff wall defective locations detection device and detection method |
| CN109632577B (en) * | 2019-02-20 | 2021-07-16 | 自然资源部第一海洋研究所 | Impervious wall defect position detection device and detection method |
| CN110850479A (en) * | 2019-11-26 | 2020-02-28 | 自然资源部第一海洋研究所 | Three-dimensional resistivity in-situ monitoring probe |
| CN114113225A (en) * | 2021-12-02 | 2022-03-01 | 北方民族大学 | Post-disaster damage detection method and device for shallow pile foundation of farm shed |
| CN117721859A (en) * | 2024-02-18 | 2024-03-19 | 水利部交通运输部国家能源局南京水利科学研究院 | System and method for detecting seepage-proofing structure defects and depth in layered soil foundation |
| CN117721859B (en) * | 2024-02-18 | 2024-04-30 | 水利部交通运输部国家能源局南京水利科学研究院 | System and method for detecting seepage-proofing structure defects and depth in layered soil foundation |
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