JPS62288596A - Stratum searching method - Google Patents
Stratum searching methodInfo
- Publication number
- JPS62288596A JPS62288596A JP61133000A JP13300086A JPS62288596A JP S62288596 A JPS62288596 A JP S62288596A JP 61133000 A JP61133000 A JP 61133000A JP 13300086 A JP13300086 A JP 13300086A JP S62288596 A JPS62288596 A JP S62288596A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- stratum
- magnetic
- information
- lines
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000001514 detection method Methods 0.000 abstract description 4
- 239000002689 soil Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
〔発明の技術分野〕
本発明は、主として都市部などの小範囲の地層構造及び
既存埋設物の存在を知るために使用される地層探査方法
に関するものである。[Detailed Description of the Invention] 3. Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a geological exploration method used mainly to find out the geological structure of a small area such as an urban area and the existence of existing buried objects. It is related to.
地質及び地層構造の探査には、人工地震を発生させたり
、トラック搭載の重錘を落下させることによる振動波の
伝搬とその反射特性を利用する方法が従来一般に採用さ
れてきている。BACKGROUND ART Conventionally, methods of generating artificial earthquakes or using the propagation of vibration waves by dropping a weight mounted on a truck and utilizing its reflection characteristics have been generally adopted for geological and stratigraphic structure exploration.
しかしながら、上記の場合は一般に人工熱れた砂漠や海
底などの土中の地層構造の探査を対象としたものであり
、都市部や人家の近くではその環境を乱すことの理由に
より不適当であり、またその需要も少なかった。However, the above-mentioned cases are generally intended for exploration of underground geological structures such as artificially heated deserts and seabeds, and are not suitable for use in urban areas or near human residences because they disturb the environment. , and the demand for it was also low.
一方、近年都市部における電柱の廃止に伴う地中配線の
促進や、都市ガス、下水道の共同溝建設が活発化された
ことにより、土中の既存埋設物の存在を事前調査の上で
工事を行なうことが必要になっており、また、近年シー
ルド工法により土中の横方向の掘進が盛んになると共に
、その地層構造の探査が盛んになってきている。On the other hand, in recent years, underground wiring has been promoted due to the abolition of utility poles in urban areas, and construction of common gas and sewerage ditches has become active. In addition, in recent years, horizontal excavation into the soil using the shield method has become popular, and exploration of the geological structure has become popular.
そこで、超音波や電磁波を用いて地下埋蔵物の探査を行
なう装置が既に使用されてきているが、超音波ではその
解像度に問題があり、また電磁波では土中の水分が吸収
してしまうという問題があり、せいぜい地下３ｍ深さ位
までしが受波できないという欠点があった。Therefore, devices that use ultrasonic waves and electromagnetic waves to search for underground buried treasures have already been used, but ultrasonic waves have problems with their resolution, and electromagnetic waves also have the problem of absorbing moisture in the soil. However, it had the disadvantage that waves could not be received up to a depth of about 3 meters underground.
本発明は前記従来の問題点を解消するためになされたも
のであり、水中及び土中に限らす殆んどの物質を貫通す
る性質を有する磁力線を土中に発生させる人工磁場を形
成し、その磁力線の強度変化を地上で計測することによ
り、都市部においてもその環境を乱すことなく、しかも
３ｍ以上の地下の地層の情報を入手可能な人工磁場によ
る地層探査方法を提供することを目的としたものである
。The present invention was made in order to solve the above-mentioned conventional problems, and it forms an artificial magnetic field that generates lines of magnetic force in the soil that have the property of penetrating most substances, limited to water and soil. The purpose of this project is to provide a method of geological exploration using an artificial magnetic field that can obtain information on geological strata more than 3 meters deep underground without disturbing the environment, even in urban areas, by measuring changes in the strength of magnetic lines of force on the ground. It is something.
上記の目的を達成するため、本発明の地層探査方法は、
地上に設けた磁場を発生するコイルに電流を流しておき
、そのコイルまわりに下方と上方とを結ぶように発生す
る磁力線の強度変化を地上で計測して地層内の情報を得
ることを特徴としたものである。In order to achieve the above object, the geological exploration method of the present invention includes:
It is characterized by passing a current through a coil that generates a magnetic field installed on the ground, and measuring changes in the strength of the magnetic lines of force generated around the coil connecting the lower and upper sides on the ground to obtain information within the strata. This is what I did.
以下図面を参照して本発明の地層探査方法を採用して地
層探査を行なう場合の一実施例を説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of stratum exploration using the stratum exploration method of the present invention will be described below with reference to the drawings.
まず、第１図に示すごとく、地表面Ｇに移動可能に設け
た探査台車１の上にその周囲に磁場を発生可能なコイル
２を配設し、電流発生装置３によりこのコイル２に電流
を流すことにより、このコイル２のまわりにはコイル２
の下方と上方とを結ぶように磁力線Ｍが発生する。First, as shown in FIG. 1, a coil 2 capable of generating a magnetic field is placed around the exploration vehicle 1 which is movably installed on the ground surface G, and a current is applied to the coil 2 by the current generator 3. By flowing the coil 2, a coil 2 is formed around this coil 2.
Lines of magnetic force M are generated so as to connect the lower and upper sides of.
次に、上記の磁力ｆＩＭの強度変化を地上で計測する磁
気センサ４を探査台車１の周囲の適当位置に多数配設し
ておき、第２図のフロー図に示すように、磁気センサ４
で受信した検知信号を信号検出装置５から信号解析装置
に伝送し、データ表示装置により地層内の情報を表示す
ることができる。Next, a large number of magnetic sensors 4 for measuring changes in the intensity of the magnetic force fIM described above are placed on the ground at appropriate positions around the exploration vehicle 1, and as shown in the flow diagram of FIG.
The detection signal received by the sensor is transmitted from the signal detection device 5 to the signal analysis device, and the information within the stratum can be displayed by the data display device.
即ち、上記のごときコイル２と電流発生装置３により探
査台車１のまわりに人工磁場を形成し、水中及び土中に
限らず殆んどの物質を貫通する性質を有する磁力線Ｍを
発生させておき、更に、その磁力線Ｍがそれら物質の磁
化率や誘磁率の相違によって影響を受けることを利用し
、その磁力線の強度変化を地上の各磁気センサ４により
検知し、その信号を解析して、土中の地質構造の情報を
得るようにしたのが本発明である。That is, an artificial magnetic field is formed around the exploration vehicle 1 by the coil 2 and the current generator 3 as described above, and lines of magnetic force M are generated that have the property of penetrating not only underwater and soil but most substances. Furthermore, by utilizing the fact that the magnetic field lines M are affected by differences in the magnetic susceptibility and permittivity of these materials, changes in the strength of the magnetic field lines are detected by each magnetic sensor 4 on the ground, and the signals are analyzed and The present invention is designed to obtain information on the geological structure of.
なお、磁力線Ｍの発生は、コイル２に電流を流すことに
よって行なっているが、周囲の様々な磁気的ノイズから
分離して有義の磁気を検知するために、コイル２から発
生する磁波は適当に周波数変調されるか、またはパルス
状に発信されるとよい。Note that the magnetic lines of force M are generated by passing a current through the coil 2, but in order to detect significant magnetism separated from various surrounding magnetic noises, the magnetic waves generated from the coil 2 are It may be frequency modulated or transmitted in a pulsed manner.
また、磁力線Ｍの強度変化を検知するには磁気センサ４
を用いる他、発信用コイルを受信用に併用することもで
きる。In addition, in order to detect the change in the intensity of the lines of magnetic force M, a magnetic sensor 4 is used.
In addition to using the transmitting coil, the transmitting coil can also be used for receiving.
以上の特徴を有する本発明の地層探査方法は、上記実施
例のごとく土中の地層構造の情報を得るために使用され
る他、例えば市街地において２００ｍおきにポーリング
して各地点の地層の情報を得る際に、それら各ポーリン
グ地点の鋼製ドリルパイプのまわりに本発明のコイル２
を配設し、特定の電流を流しコイル２の周囲に配設した
各磁気センサ４により磁力線Ｍの強度変化を地上で検知
し、解析することにより、各ポーリング地点間の地層の
情報をも知ることができ、広範囲に応用することができ
る。The stratum exploration method of the present invention having the above-mentioned features can be used to obtain information on the stratum structure in the soil as in the above embodiments, and can also be used, for example, in urban areas to poll every 200 meters to obtain information on the strata at each point. When obtaining the coil 2 of the present invention, the coil 2 of the present invention is placed around the steel drill pipe at each poling point.
By applying a specific current to each magnetic sensor 4 placed around the coil 2 and detecting and analyzing changes in the intensity of the magnetic lines of force M on the ground, information on the strata between each polling point can also be obtained. and can be widely applied.
以上に説明したごとく、本発明の地層探査方法を用いれ
ば、都市部等においてもその環境を乱すことなく、例え
ば３ｍ以上の深部の地下の地層の情報を入手可能となる
という効果がある。As explained above, by using the stratum exploration method of the present invention, it is possible to obtain information on underground strata at a depth of 3 m or more, for example, without disturbing the environment even in urban areas.
また、本発明の地層探査は地上において全ての操作がで
きるので、経済的な探査ができ、しかも安全な作業がで
きるという利点がある。Furthermore, since all operations in the strata exploration of the present invention can be performed on the ground, there is an advantage that exploration can be carried out economically and that the work can be carried out safely.
第１図は本発明の方法を採用して地層探査を行なう一実
施例の探査台車を示す斜視図であり、第２図は第１図の
磁気センサで受信した検知信号から地層内の情報を表示
するまでの回路のフロー図である。
２・・・コイル、３・・・電流発生装置、４・・・磁気
センサ、Ｇ・・・地表面、Ｍ・・・磁力線。FIG. 1 is a perspective view showing an exploration vehicle of an embodiment that conducts geological exploration using the method of the present invention, and FIG. 2 shows information inside the stratum from the detection signal received by the magnetic sensor in FIG. It is a flow diagram of a circuit up to display. 2... Coil, 3... Current generator, 4... Magnetic sensor, G... Ground surface, M... Lines of magnetic force.
Claims (1)
、そのコイルまわりに下方と上方とを結ぶように発生す
る磁力線の強度変化を地上で計測して地層内の情報を得
る地層探査方法。A geological exploration method in which a current is passed through a coil that generates a magnetic field installed on the ground, and changes in the strength of the magnetic lines of force that are generated around the coil connecting the lower and upper sides are measured on the ground to obtain information within the stratum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61133000A JPS62288596A (en) | 1986-06-09 | 1986-06-09 | Stratum searching method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61133000A JPS62288596A (en) | 1986-06-09 | 1986-06-09 | Stratum searching method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62288596A true JPS62288596A (en) | 1987-12-15 |
Family
ID=15094442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61133000A Pending JPS62288596A (en) | 1986-06-09 | 1986-06-09 | Stratum searching method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62288596A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5421902A (en) * | 1977-07-21 | 1979-02-19 | Mitsubishi Corp | Electromagnetism searching method in air |
-
1986
- 1986-06-09 JP JP61133000A patent/JPS62288596A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5421902A (en) * | 1977-07-21 | 1979-02-19 | Mitsubishi Corp | Electromagnetism searching method in air |
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