CN103499612A - Method for comprehensively geographically exploring hidden trouble of seawall engineering - Google Patents
Method for comprehensively geographically exploring hidden trouble of seawall engineering Download PDFInfo
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- CN103499612A CN103499612A CN201310480499.6A CN201310480499A CN103499612A CN 103499612 A CN103499612 A CN 103499612A CN 201310480499 A CN201310480499 A CN 201310480499A CN 103499612 A CN103499612 A CN 103499612A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000000149 penetrating effect Effects 0.000 claims abstract description 19
- 230000002159 abnormal effect Effects 0.000 claims abstract description 9
- 238000012545 processing Methods 0.000 claims abstract description 5
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 14
- 230000008595 infiltration Effects 0.000 claims description 3
- 238000001764 infiltration Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 abstract 2
- 230000035699 permeability Effects 0.000 abstract 1
- 238000002407 reforming Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000002547 anomalous effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006854 communication Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000011202 physical detection method Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The invention discloses a method for comprehensively geographically exploring hidden trouble of seawall engineering. The method includes exploring conductivities a seawall body at the depths of 7.5m and 15m by the aid of ground conductivity meters at exploration intervals of 10m, primarily processing monitoring data and initially locating regions corresponding to points with abnormal conductivity values; acquiring precise images of geological conditions of the regions with abnormal conductivities of the seawall body by the aid of ground penetrating radar and processing the images; analyzing possible reasons for the abnormal conductivities according to the acquired underground images, which are reflected by the ground penetrating radar, of the regions with the abnormal conductivity values, and finding out distribution of abnormal substance layers and local abnormal substances which affect abrupt change of permeability coefficients of the seawall body; rectifying and reforming an embankment with the geological safety hidden trouble. The method has the advantages that the ground conductivity meters are used with the ground penetrating radar, so that merits of instruments can be mined to the greatest extent, shortcomings of the instruments are overcome, the hidden trouble and leakage can be expectedly quickly and effectively explored, and danger can be managed in a targeted manner.
Description
Technical field
The present invention relates to embankment project Hidden Danger Detection field, specifically a kind of geophysical prospecting method of the combination for the embankment project Hidden Danger Detection.
Background technology
Traditional Hidden Danger Detection method can not be determined the hidden danger Present site fast, accurately as geological drilling, artificial detection etc., and probing has locality and destructiveness.Development along with technology, the physical detecting method of take over nearly 20 years obtains more achievement in research at the Hidden Danger Detection technical elements of dyke building as main lossless detection, but due to the complicacy of engineering structure and the otherness of tax dis environment, single surveying instrument is difficult to be applicable to fully the dyke building Hidden Danger Detection, and use different instruments to detect simultaneously, mutually check and supplement, can effectively improve accuracy and the reliability of interpretation, be the Rational Development direction of dyke defect detecting.Although the physical detection methods of embankment project safety is compared with dyke defect detecting, not essential distinction on principle, due to the singularity of engineering itself and environmental baseline, measuring technology and data interpretation judgement aspect difference to some extent all at the scene.
Summary of the invention
In order to solve the above-mentioned technical matters existed in prior art, the invention provides a kind of geophysical prospecting method of the combination for the embankment project Hidden Danger Detection, comprise the steps:
(1) at first take 10m as surveying spacing, utilize the ground conductivity instrument to survey the conductivity of sea wall levee body 7.5m, the 15m degree of depth, Monitoring Data is processed for the first time, analyzed the Variation Features of conductivity value, Primary Location is carried out in conductivity value abnormity point corresponding region;
(2), in the conductivity anomaly zone, utilize ground penetrating radar to carry out precise image collection (in measuring process, for the concrete condition of different dyke buildings, selecting to survey range) to the geological condition of levee body, and carry out the image processing;
(3) according to the underground collection image of conductivity value abnormal area of ground penetrating radar reflection, analysis may cause the reason of conductivity anomaly, finds out and affect exotic matter layer that the levee body infiltration coefficient suddenlys change and the distribution of local anomaly material;
(4) for the dyke that has geological security hidden danger, rectified and improved.
Further, described ground conductivity instrument is EM34-3 type ground conductivity instrument.
Further, described ground penetrating radar is the RIS ground penetrating radar.
The present invention utilizes ground conductivity instrument and ground penetrating radar to be used in combination, and excavates to greatest extent the instrument advantage, makes up defect separately, to can fast and effeciently detecting hidden danger and seepage, carries out with a definite target in view the disease danger and administers.
The accompanying drawing explanation
Fig. 1 is the physical prospecting of the combination for embankment project Hidden Danger Detection method flow diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
The ground conductivity measurement is to take the conductivity difference of underground medium as basis, by the method for telemetering of room and time distribution characteristics solving practical problems of research electromagnetic field.It belongs to a kind of Low Frequency Electromagnetic Methods, its frequency of operation between audio frequency (
n* 10～
n* 10
4hZ) in scope.Dyke produces hidden danger (as loose as soft layer, the soil body, water stream channel etc.), perhaps the media type of levee body and structure thereof, factor of porosity, packing, water percentage etc. change, can cause the electrical conductive structure of underground medium to change, therefore can detect fast the spatio-temporal distribution feature of conductivity by the ground conductivity instrument, judge by this nonuniformity of levee body.The ground conductivity instrument that the present invention adopts, by several parts of transmitter, receiver, transmitting coil and receiving coil, formed, in use, transmitting coil and receiving coil remain in same plane, by the mode that vertical electricity excites or horizontal magnetic excites, can survey respectively the ground conductivity value of 7.5m, 15m, 30m and 4 kinds of depth measurements of 60m.
The ground penetrating radar (GPR) that the present invention adopts is that to utilize frequency be 10
6～10
9the radiowave of Hz descends definitely a kind of geophysical prospecting technology of dielectric distribution.During ground penetrating radar work, by the downward directional transmissions electromagnetic wave of emitting antenna, produce reflection and transmission run into interface in the pulse electromagnetic wave communication process after, reflection wave is upwards propagated the received antenna in arrival ground and is received, whole process is by host computer control, and the received time varying signal of receiving antenna carries out record by main frame.Have or not just known underground electromagnet interference or the anomalous body of having or not of reflected signal in the Analysis of Radar record, according to the degree of depth that can calculate electromagnet interference or anomalous body hourage of reflected signal.
In the Hidden Danger Detection work of embankment project, the present invention is used in combination ground conductivity instrument and ground penetrating radar, to can fast and effeciently detecting hidden danger and seepage, carries out with a definite target in view the disease danger and administers.Comprising the steps: of the method
1, at first take 10m as surveying spacing, utilize the ground conductivity instrument to survey the conductivity of sea wall levee body 7.5m, the 15m degree of depth, Monitoring Data is processed for the first time, analyze the Variation Features of conductivity value, Primary Location is carried out in conductivity value abnormity point corresponding region;
2,, in the conductivity anomaly zone, utilize ground penetrating radar to carry out precise image collection (in measuring process, for the concrete condition of different dyke buildings, selecting to survey range) to the geological condition of levee body, and carry out the image processing;
3, according to the underground collection image of conductivity value abnormal area of ground penetrating radar reflection, analysis may cause the reason of conductivity anomaly, finds out and affect exotic matter layer that the levee body infiltration coefficient suddenlys change and the distribution of local anomaly material;
4, for the dyke that has geological security hidden danger, rectified and improved.
Described ground conductivity instrument is preferably EM34-3 type ground conductivity instrument, and described ground penetrating radar is the RIS ground penetrating radar.
Claims (3)
1. the geophysical prospecting method of the combination for the embankment project Hidden Danger Detection, comprise the steps:
(1) at first take 10m as surveying spacing, utilize the ground conductivity instrument to survey the conductivity of sea wall levee body 7.5m, the 15m degree of depth, Monitoring Data is processed for the first time, analyzed the Variation Features of conductivity value, Primary Location is carried out in conductivity value abnormity point corresponding region;
(2), in the conductivity anomaly zone, utilize ground penetrating radar to carry out the precise image collection to the geological condition of levee body, and carry out the image processing;
(3) according to the underground collection image of conductivity value abnormal area of ground penetrating radar reflection, analysis may cause the reason of conductivity anomaly, finds out and affect exotic matter layer that the levee body infiltration coefficient suddenlys change and the distribution of local anomaly material;
(4) for the dyke that has geological security hidden danger, rectified and improved.
2. the geophysical prospecting method of the combination for the embankment project Hidden Danger Detection as claimed in claim 1, it is characterized in that: described ground conductivity instrument is EM34-3 type ground conductivity instrument.
3. the geophysical prospecting method of the combination for the embankment project Hidden Danger Detection as claimed in claim 1, it is characterized in that: described ground penetrating radar is the RIS ground penetrating radar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310480499.6A CN103499612B (en) | 2013-10-14 | 2013-10-14 | A kind of combination geophysical prospecting method for embankment project Hidden Danger Detection |
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| CN201310480499.6A CN103499612B (en) | 2013-10-14 | 2013-10-14 | A kind of combination geophysical prospecting method for embankment project Hidden Danger Detection |
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| CN103499612A true CN103499612A (en) | 2014-01-08 |
| CN103499612B CN103499612B (en) | 2015-12-09 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770478A (en) * | 2016-11-28 | 2017-05-31 | 青岛理工大学 | Nondestructive detection method for dam stability |
| CN107544097A (en) * | 2017-06-27 | 2018-01-05 | 上海市环境科学研究院 | A kind of soil pollution based on geophysical probing technique is accurately positioned and accurate evaluation method |
| CN112327375A (en) * | 2020-11-06 | 2021-02-05 | 河海大学 | Electromagnetic exploration method of anti-interference air-ground unmanned aerial vehicle for barrier dam leakage channel |
| CN113703058A (en) * | 2021-09-02 | 2021-11-26 | 天津市勘察设计院集团有限公司 | Method for detecting underground obstacle by utilizing apparent conductivity and relative dielectric constant |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4583095A (en) * | 1983-08-22 | 1986-04-15 | Glen Peterson | Radar seismograph improvement |
| CL2008000024A1 (en) * | 2008-01-04 | 2009-01-16 | Univ Pontificia Catolica Chile | System and method for the detection, location and identification of objects in soil and subsoil that are in an area of interest previously referenced. |
| US7675289B1 (en) * | 2009-07-04 | 2010-03-09 | Stolar, Inc. | Underground anomalies detection vehicle and trailer |
| CN203149134U (en) * | 2013-04-12 | 2013-08-21 | 黑龙江科技学院 | Ground penetrating radar for geological exploration |
-
2013
- 2013-10-14 CN CN201310480499.6A patent/CN103499612B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770478A (en) * | 2016-11-28 | 2017-05-31 | 青岛理工大学 | Nondestructive detection method for dam stability |
| CN106770478B (en) * | 2016-11-28 | 2019-04-16 | 青岛理工大学 | Nondestructive detection method for dam stability |
| CN107544097A (en) * | 2017-06-27 | 2018-01-05 | 上海市环境科学研究院 | A kind of soil pollution based on geophysical probing technique is accurately positioned and accurate evaluation method |
| CN112327375A (en) * | 2020-11-06 | 2021-02-05 | 河海大学 | Electromagnetic exploration method of anti-interference air-ground unmanned aerial vehicle for barrier dam leakage channel |
| CN112327375B (en) * | 2020-11-06 | 2021-11-02 | 河海大学 | Electromagnetic exploration method of anti-interference air-ground unmanned aerial vehicle for barrier dam leakage channel |
| CN113703058A (en) * | 2021-09-02 | 2021-11-26 | 天津市勘察设计院集团有限公司 | Method for detecting underground obstacle by utilizing apparent conductivity and relative dielectric constant |
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| CN103499612B (en) | 2015-12-09 |
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