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WO1996006367A1 - Procede et dispositif d'exploration du sous-sol - Google Patents

Procede et dispositif d'exploration du sous-sol Download PDF

Info

Publication number
WO1996006367A1
WO1996006367A1 PCT/JP1995/001660 JP9501660W WO9606367A1 WO 1996006367 A1 WO1996006367 A1 WO 1996006367A1 JP 9501660 W JP9501660 W JP 9501660W WO 9606367 A1 WO9606367 A1 WO 9606367A1
Authority
WO
WIPO (PCT)
Prior art keywords
underground
data
dimensionally
electromagnetic wave
ground
Prior art date
Application number
PCT/JP1995/001660
Other languages
English (en)
Japanese (ja)
Inventor
Hiroshi Tomita
Original Assignee
Geo Search Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Geo Search Co., Ltd. filed Critical Geo Search Co., Ltd.
Priority to AU32644/95A priority Critical patent/AU3264495A/en
Publication of WO1996006367A1 publication Critical patent/WO1996006367A1/fr

Links

Classifications

    • 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
    • G01V3/12—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with electromagnetic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/885—Radar or analogous systems specially adapted for specific applications for ground probing

Definitions

  • the present invention can receive electromagnetic waves emitted toward the ground, detect the state of the ground at a slice level parallel to the ground, and further three-dimensionally grasp, for example, a cavity formed in the ground.
  • the present invention relates to an underground exploration method and an underground exploration device that can be used. Background art
  • one transmitting antenna that emits electromagnetic waves toward the ground, a receiving antenna that receives reflected waves from the ground, and a reflected wave received by the receiving antenna are processed.
  • the transmitting antenna and the receiving antenna are mounted on a vehicle capable of traveling on the ground using an underground exploration device composed of a signal processing device for visualizing the image on a CRT or on paper. It is provided as a standard.
  • a vehicle with such a configuration is attached to a rover, and the rover is driven underground while traveling on the road in the same way as a general vehicle, and the obtained data is analyzed. If there is a place that seems to have occurred, investigate the surrounding area in detail.
  • the longitudinal section under the road in the traveling direction of the rover is obtained as waveform data, and the area around the road where a cavity is considered to be formed is meshed with a hand-held traveling body.
  • the underground exploration typified by such a conventional underground exploration under a paved road is obtained by a primary investigation for obtaining a waveform of a longitudinal section along a moving direction of a vehicle, and the primary investigation.
  • a secondary investigation is performed when it is determined that re-investigation is required based on the results of the analysis work.
  • the data obtained in the secondary survey was only the planar size of the cavity, and the volume of the cavity could not be known.
  • cavities under paved roads occur under asphalt paved to a certain thickness, so data from the road surface to under the pavement is essentially unnecessary, and if data of that length can be canceled, The data processing time can be shortened.
  • the distance below the road where a cavity can be formed is known in advance, it is convenient if the depth can be specified and data can be obtained from the depth or less.
  • a first object of the present invention is to provide an underground exploration method capable of three-dimensionally knowing the state of the underground under a paved road or the like by a single exploration.
  • a second object of the present invention is to provide an underground exploration method capable of acquiring data at an arbitrary depth in the ground.
  • a third object of the present invention is to provide an underground exploration device that can effectively realize the first and second objects. Disclosure of the invention
  • a reflected wave of the electromagnetic wave is transmitted to a plurality of planes. It is characterized in that it is received by the receiving means at a location and the underground state of the search area is three-dimensionally analyzed based on the data received by each receiving means.
  • the configuration for realizing the second object of the present invention is, as described in claim 3, the same as in claim 1. Or 2) to output data analyzed three-dimensionally at each depth in the ground.
  • an electromagnetic wave transmitting means for driving an electromagnetic wave into the ground, and a plurality of electromagnetic wave transmitting means arranged in a plane with respect to an exploration area.
  • a data analysis means for performing analysis.
  • the electromagnetic wave transmitting means has only one transmitting antenna, or as described in claim 6, a transmitting antenna of the electromagnetic wave transmitting means is used.
  • a transmitting antenna of the electromagnetic wave transmitting means is used.
  • electromagnetic waves from an oscillator are integrated with each receiving means, and the electromagnetic waves from the oscillator can be selectively sent to each transmitting antenna by a distribution means.
  • the former method requires less transmitting means, and the latter method requires a small output. This enables three-dimensional underground exploration with high accuracy.
  • FIG. 1 shows a first embodiment of the present invention.
  • FIG. 1 (a) is a schematic plan view of an exploration device
  • FIG. 1 (b) is a schematic sectional view thereof.
  • FIG. 2 shows the data obtained from the first embodiment. The figure which shows the state which analyzed at the time slice level.
  • Fig. 3 is a schematic diagram showing a complicated and complicated underground pipe, (a) shows the underground pipe in a three-dimensional state, and (b) shows the state of the underground pipe analyzed by the conventional method.
  • Fig. 4 shows the second embodiment, (a) is a schematic plan view of the search device, (b) is a schematic diagram showing the relationship between the oscillator, distributor and each module, and (c) is ( The cross section of a) is shown.
  • FIG. 1 is a schematic view showing a first embodiment of the underground exploration method according to the present invention.
  • the receiver 1 is a transmitter that unites a transmitting antenna and oscillator that emits electromagnetic waves used for underground exploration toward the ground, and 2 is a receiver that receives electromagnetic waves emitted from the transmitting antenna of transmitter 1 and reflected from the ground.
  • the receiver group 2 has a configuration in which the receivers 2a are arranged in mxn rows, and the receiver 1a is united with a receiving antenna and a receiver.
  • the transmitter 1 is located away from the receiver group 2 and emits electromagnetic waves at an angle to the ground.
  • the reflection area of the electromagnetic waves reflected from the ground becomes the reception area of the receiver group 2 arranged in a matrix of mxn columns , So that the underground condition can be simultaneously probed in the planar area of m x n rows of the receiver group 2.
  • data of ground obtained from each receiver 1 a is a primary data is a sectional waveform data in the depth direction
  • X n size (Secondary data) is obtained at the cross section of the image, and if this secondary data is combined with the secondary data of m rows of receivers in a row direction, a three-dimensional underground of HX nxm size can be obtained. Data will be obtained.
  • Image processing of data obtained by such a receiver group consisting of m X n receivers enables the underground state of the area to be displayed three-dimensionally, and also performs time slice processing Thereby, as shown in FIG. 2, plane data for each specified depth (H n ) can also be obtained. Furthermore, three-dimensional underground data can be image-processed as a perspective view as shown in Fig. 3 (a), and only cross-sectional underground data can be obtained as shown in Fig. 3 (b). Compared with the conventional exploration method, it is possible to know the piping condition of buried pipes such as gas pipes and water pipes buried underground.
  • Such a transmitter 1 and a group of receivers 2 are attached to, for example, a hand-held traveling body (not shown) having wheels, and when the exploration of one area is completed, the traveling body is moved to, for example, an adjacent area. Let the exploration continue.
  • Underground conditions can be known three-dimensionally, and image processing and other processing can be performed to calculate the volume of the cavity formed underground, for example. It will be possible to immediately know the amount of cement and other filling materials required for repair work to fill the cavities in order to prevent the collapse.
  • the shape of the cavity under the paved road that causes the collapse of the paved road is not always constant, and depending on the shape of the upper part of the cavity, the risk of collapse of the paved road is extremely high to relatively low. Can be specified to some extent.
  • the thickness of the pavement such as concrete asphalt can be known in advance, so the thickness of the pavement is excluded during image processing, and If processing is performed on data, the time required for image processing can be reduced.
  • the extent to which cavities can be formed under paved roads is determined to some extent, so the presence or absence of cavities is determined based on planar data at this depth, and if there are no cavities, exploration in that area is stopped. However, this can be notified to the operator by a buzzer, lamp, etc., and if there is a cavity, the exploration can be continued.
  • FIG. 4 shows a second embodiment of the present invention.
  • a module 11a in which a transmitting antenna, a receiving antenna, and a receiver are united is arranged in a matrix of mxn rows, and a flat plate is formed as a whole.
  • the distributor 12 is connected to the transmission / reception unit 11 having the shape, and the electromagnetic wave from the oscillator 13 is transmitted to each module 11 a of the transmission / reception unit 11 via the distributor 12.
  • This distributor 12 transmits electromagnetic waves to the transmitting antennas of, for example, n modules 11 a per row, m modules 11 a per column, and any module 11 a at a time.
  • the mode is selected by sending an electromagnetic wave to n modules 11a in each row and selecting the mode, switching is performed so that electromagnetic waves are sent to the modules in other rows sequentially, and transmission is performed each time Receives electromagnetic waves reflected from the ground by the receiver of the module where the operation was performed.
  • an oscillator 13 for high frequency oscillator 13a, medium frequency oscillator 13b, and low frequency oscillator 13c is prepared for oscillator 13. Therefore, it is possible to search at the optimal frequency according to the purpose of the search.
  • the high-frequency oscillator 13a is used for searching at a shallow depth
  • the low-frequency oscillator 13c is used for searching at a deep depth. Exploration can be maintained.
  • the first aspect of the present invention it is possible to obtain data of the underground state in a plane spread, so that by adding data in the depth direction, the three-dimensional underground state can be obtained once. Can be obtained by exploration.
  • data analyzed three-dimensionally is used as image information.
  • the underground state can be viewed three-dimensionally.
  • the third aspect of the invention it is possible to output planar underground data at an arbitrary depth, so that it is possible to immediately know the underground state at a specified depth, This is effective when data display is unnecessary.
  • a method that is not considered in a conventional underground exploration apparatus in which electromagnetic waves reflected in the ground are received at once by a plurality of receiving means arranged on a matrix, is adopted. As a result, the underground condition can be grasped three-dimensionally.
  • the number of transmitting means is small, and a three-dimensional underground exploration with low output and high accuracy is possible.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

Des ondes électromagnétiques sont émises vers le sol par un appareil émetteur d'ondes électromagnétiques (1), et les ondes réfléchies sont reçues par des récepteurs (2a) dispersés sur un plan. La configuration du sous-sol d'une zone est analysée de manière tridimensionnelle en fonction des données reçues par les récepteurs (2a). Des données tridimensionnelles analysées sont produites pour chaque niveau de profondeur, ce qui permet une représentation tridimensionnelle de la configuration du sous-sol.
PCT/JP1995/001660 1994-08-25 1995-08-23 Procede et dispositif d'exploration du sous-sol WO1996006367A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU32644/95A AU3264495A (en) 1994-08-25 1995-08-23 Method and device for investigating underground

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP20095594A JP3423948B2 (ja) 1994-08-25 1994-08-25 地中探査方法及び地中探査装置
JP6/200955 1994-08-25

Publications (1)

Publication Number Publication Date
WO1996006367A1 true WO1996006367A1 (fr) 1996-02-29

Family

ID=16433092

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1995/001660 WO1996006367A1 (fr) 1994-08-25 1995-08-23 Procede et dispositif d'exploration du sous-sol

Country Status (3)

Country Link
JP (1) JP3423948B2 (fr)
AU (1) AU3264495A (fr)
WO (1) WO1996006367A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2304483A (en) * 1995-08-18 1997-03-19 London Electricity Plc Determining location of object in a medium
GB2307811A (en) * 1995-11-01 1997-06-04 British Gas Plc Thickness measurement
US6628119B1 (en) 1998-08-28 2003-09-30 Den Norske Stats Oljeselskap A.S. Method and apparatus for determining the content of subterranean reservoirs
US6696839B2 (en) 2001-08-07 2004-02-24 Statoil Asa Electromagnetic methods and apparatus for determining the content of subterranean reservoirs
US6717411B2 (en) 2001-08-07 2004-04-06 Statoil Asa Electromagnetic method and apparatus for determining the nature of subterranean reservoirs using refracted electromagnetic waves
US6859038B2 (en) 2000-02-02 2005-02-22 Statoil Asa Method and apparatus for determining the nature of subterranean reservoirs using refracted electromagnetic waves
US7202669B2 (en) 2000-08-14 2007-04-10 Electromagnetic Geoservices As Method and apparatus for determining the nature of subterranean reservoirs
US7319330B2 (en) 2002-05-24 2008-01-15 Electromagnetic Geoservices As System and method for electromagnetic wavefield resolution
US7567084B2 (en) 2003-03-17 2009-07-28 Electromagnetic Geoservices As Method and apparatus for determining the nature of submarine reservoirs
US8913463B2 (en) 2006-10-12 2014-12-16 Electromagnetic Geoservices Asa Positioning system
US9030909B2 (en) 2006-02-06 2015-05-12 Statoil Petroleum As Method of conducting a seismic survey
CN117233755A (zh) * 2023-11-08 2023-12-15 江苏筑升土木工程科技有限公司 道路路基病害和地下病害体的快速自动化探测系统

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2345954C (fr) * 1998-10-21 2004-12-21 Omron Corporation Detecteur de mines et appareil d'inspection
JP4376391B2 (ja) * 1999-12-24 2009-12-02 大阪瓦斯株式会社 地中探査レーダ装置
JP4709421B2 (ja) * 2001-04-27 2011-06-22 三井造船株式会社 マルチパス３次元映像化レーダ装置
JP5701109B2 (ja) * 2011-03-08 2015-04-15 ジオ・サーチ株式会社 舗装の健全性の評価方法
JP2014098597A (ja) * 2012-11-13 2014-05-29 Geo Search Co Ltd 陥没の危険性評価方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5427140A (en) * 1977-08-02 1979-03-01 Nissan Motor Co Ltd Multiple antenna and radar system
JPS61258182A (ja) * 1985-05-10 1986-11-15 Omron Tateisi Electronics Co ３次元映像装置
JPS61262673A (ja) * 1985-05-16 1986-11-20 Central Res Inst Of Electric Power Ind 地中埋設物の探査方法
JPH01280277A (ja) * 1988-05-06 1989-11-10 Komatsu Ltd 地中埋設物探査装置
JPH02257082A (ja) * 1989-03-30 1990-10-17 Komatsu Ltd 地中探査装置
JPH0527008A (ja) * 1991-07-24 1993-02-05 Nec Corp 電子走査アンテナ
JPH0522877B2 (fr) * 1983-11-11 1993-03-30 Schlumberger Overseas

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5427140A (en) * 1977-08-02 1979-03-01 Nissan Motor Co Ltd Multiple antenna and radar system
JPH0522877B2 (fr) * 1983-11-11 1993-03-30 Schlumberger Overseas
JPS61258182A (ja) * 1985-05-10 1986-11-15 Omron Tateisi Electronics Co ３次元映像装置
JPS61262673A (ja) * 1985-05-16 1986-11-20 Central Res Inst Of Electric Power Ind 地中埋設物の探査方法
JPH01280277A (ja) * 1988-05-06 1989-11-10 Komatsu Ltd 地中埋設物探査装置
JPH02257082A (ja) * 1989-03-30 1990-10-17 Komatsu Ltd 地中探査装置
JPH0527008A (ja) * 1991-07-24 1993-02-05 Nec Corp 電子走査アンテナ

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2304483A (en) * 1995-08-18 1997-03-19 London Electricity Plc Determining location of object in a medium
US6002357A (en) * 1995-08-18 1999-12-14 London Electricity Plc System for and method of determining the location of an object in a medium
GB2304483B (en) * 1995-08-18 2000-03-29 London Electricity Plc System for and method of determining the location of an object in a medium
GB2307811A (en) * 1995-11-01 1997-06-04 British Gas Plc Thickness measurement
GB2307811B (en) * 1995-11-01 1999-12-08 British Gas Plc Measurement arrangement
US6628119B1 (en) 1998-08-28 2003-09-30 Den Norske Stats Oljeselskap A.S. Method and apparatus for determining the content of subterranean reservoirs
US7026819B2 (en) 1998-08-28 2006-04-11 Statoil Asa Electromagnetic surveying for mapping the content of subterranean reservoirs
US7145341B2 (en) 2000-02-02 2006-12-05 Electromagnetic Geoservices As Method and apparatus for recovering hydrocarbons from subterranean reservoirs
US6859038B2 (en) 2000-02-02 2005-02-22 Statoil Asa Method and apparatus for determining the nature of subterranean reservoirs using refracted electromagnetic waves
US7202669B2 (en) 2000-08-14 2007-04-10 Electromagnetic Geoservices As Method and apparatus for determining the nature of subterranean reservoirs
US6900639B2 (en) 2001-08-07 2005-05-31 Statoil Asa Electromagnetic method and apparatus for determining the nature of subterranean reservoirs using refracted electromagnetic waves
US6864684B2 (en) 2001-08-07 2005-03-08 Statoil Asa Electromagnetic methods and apparatus for determining the content of subterranean reservoirs
US6717411B2 (en) 2001-08-07 2004-04-06 Statoil Asa Electromagnetic method and apparatus for determining the nature of subterranean reservoirs using refracted electromagnetic waves
US6696839B2 (en) 2001-08-07 2004-02-24 Statoil Asa Electromagnetic methods and apparatus for determining the content of subterranean reservoirs
US7319330B2 (en) 2002-05-24 2008-01-15 Electromagnetic Geoservices As System and method for electromagnetic wavefield resolution
US7423432B2 (en) 2002-05-24 2008-09-09 Electromagnetic Geoservices As System and method for electromagnetic wavefield resolution
US7567084B2 (en) 2003-03-17 2009-07-28 Electromagnetic Geoservices As Method and apparatus for determining the nature of submarine reservoirs
US9030909B2 (en) 2006-02-06 2015-05-12 Statoil Petroleum As Method of conducting a seismic survey
US8913463B2 (en) 2006-10-12 2014-12-16 Electromagnetic Geoservices Asa Positioning system
CN117233755A (zh) * 2023-11-08 2023-12-15 江苏筑升土木工程科技有限公司 道路路基病害和地下病害体的快速自动化探测系统
CN117233755B (zh) * 2023-11-08 2024-01-26 江苏筑升土木工程科技有限公司 道路路基病害和地下病害体的快速自动化探测系统

Also Published As

Publication number Publication date
JP3423948B2 (ja) 2003-07-07
JPH0862339A (ja) 1996-03-08
AU3264495A (en) 1996-03-14

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