JPH10268061A - Base relative resistance measurement sensor - Google Patents

Base relative resistance measurement sensor

Info

Publication number
JPH10268061A
JPH10268061A JP9156597A JP9156597A JPH10268061A JP H10268061 A JPH10268061 A JP H10268061A JP 9156597 A JP9156597 A JP 9156597A JP 9156597 A JP9156597 A JP 9156597A JP H10268061 A JPH10268061 A JP H10268061A
Authority
JP
Japan
Prior art keywords
ground
sensor
electrode
electrode members
center rod
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
Application number
JP9156597A
Other languages
Japanese (ja)
Inventor
Masaharu Fukue
正治 福江
Naomi Taya
直美 田屋
Motoi Matsumoto
基 松本
Shoji Tanaka
正二 田中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KOA KAIHATSU KK
MARUTO SEISAKUSHO KK
Original Assignee
KOA KAIHATSU KK
MARUTO SEISAKUSHO KK
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 KOA KAIHATSU KK, MARUTO SEISAKUSHO KK filed Critical KOA KAIHATSU KK
Priority to JP9156597A priority Critical patent/JPH10268061A/en
Publication of JPH10268061A publication Critical patent/JPH10268061A/en
Pending legal-status Critical Current

Links

Landscapes

  • Geophysics And Detection Of Objects (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

PROBLEM TO BE SOLVED: To structure by arranging a plurality of electrode members for a sensor member, and use for measuring specific resistance of a base between two of the electrode members, and further correspond to any electrical measurement, etc. SOLUTION: A center rod member 5 is arranged in a core portion in a sensor member 1, and a pressing force applied to a head part 10 can be transmitted to a leading end cone member 9 via the center rod member, and an electrode member is connected to a measure via a cable 40 through which the center rod member 5 is passed. Further, in a measurement part 30, electrode members 35,... are arranged at specific intervals via insulation cylinders 31,..., and any number of electrode members is selected, so that specific resistance for the base can be measured.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、地質調査に使用す
るセンサ部材に関し、特に、測定部に複数の電極を任意
の間隔で配置して、測定装置において選択した電極間で
地層の比抵抗を測定する地盤比抵抗測定センサに関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sensor member for use in geological surveys, and more particularly, to a method of arranging a plurality of electrodes at an arbitrary interval in a measuring section and measuring a specific resistance of a formation between electrodes selected in a measuring apparatus. The present invention relates to a ground resistivity measurement sensor for measuring.

【0002】[0002]

【従来の技術および発明が解決しようとする課題】地盤
の地質調査等を行う場合には、一般にボーリング装置を
用いて地盤の所定の深さの部分から土等を採取して、そ
のサンプルを用いて土の性質を知ることが行われてい
る。また、地盤の比抵抗を測定する場合には、前記ボー
リング孔に電極部材を挿入して、電気検層等を行うこと
が考えられている。例えば、特公平5−31952号公
報等にはコーン式電気検層センサを用いる例が示されて
おり、前記センサを地盤に貫入させて、コーン貫入試験
と電気検層とを行い得る装置が開示されている。前記従
来例では、筒状軸部に複数の電極を配置したものが開示
されており、電極間に電流を流して地盤の比抵抗を測定
するようにしている。
2. Description of the Related Art In the case of performing a geological survey or the like of the ground, in general, soil or the like is collected from a predetermined depth of the ground using a boring device, and the sample is used. Knowing the nature of the soil is done. When measuring the specific resistance of the ground, it is considered that an electrode member is inserted into the boring hole to perform an electrical logging or the like. For example, Japanese Patent Publication No. 5-31952 discloses an example in which a cone-type electric logging sensor is used, and an apparatus that allows the sensor to penetrate the ground to perform a cone penetration test and an electric logging is disclosed. Have been. In the above-mentioned conventional example, a configuration in which a plurality of electrodes are arranged on a cylindrical shaft portion is disclosed, and a current is passed between the electrodes to measure the specific resistance of the ground.

【0003】従来のコーン式電気検層センサにおいて
は、電極の数が2〜4個であり、電極の間隔も数cm〜2
0cmに設定されている。ところが、前記コーン式電気検
層センサでは、電極の間隔が狭い場合には把握可能な地
層が薄く、電極間隔が広い場合には厚い地層を検知する
ことができるものの、1つのセンサに設ける電極の数が
少ないこと等の理由で、地層を全体的に把握することが
困難であるという問題がある。そこで、一般のボーリン
グのように、地盤の深い位置まで電気検層により地盤の
状態を知る必要がある場合には、センサを何度も押し込
んで測定作業を繰り返して行うことになり、測定作業の
能率が良くない等の問題がある。
In a conventional cone-type electric logging sensor, the number of electrodes is 2 to 4 and the interval between the electrodes is several cm to 2
It is set to 0 cm. However, in the cone-type electric logging sensor, when the gap between the electrodes is small, the stratum that can be grasped is thin, and when the gap between the electrodes is wide, a thick stratum can be detected. There is a problem that it is difficult to grasp the whole stratum because of the small number. Therefore, when it is necessary to know the state of the ground by electric logging to a deep position in the ground as in general boring, the sensor must be pushed many times and the measurement work must be repeated. There are problems such as poor efficiency.

【0004】本発明は、前述したような従来のセンサの
問題を解消しようとするもので、多数の電極を任意の間
隔で配置し、任意の電極を選択して、選択した電極の間
もしくは所定の間隔で地盤に打ち込んだセンサの間で比
抵抗を測定可能な装置を提供することを目的としてい
る。
The present invention has been made to solve the above-mentioned problems of the conventional sensor. A plurality of electrodes are arranged at an arbitrary interval, an arbitrary electrode is selected, and a space between the selected electrodes or a predetermined value is selected. It is an object of the present invention to provide a device capable of measuring a specific resistance between sensors driven into the ground at intervals of.

【0005】[0005]

【課題を解決するための手段】本発明は、先端部をコー
ン部材を設け、複数の電極を設けた測定部を地盤に貫入
させて地盤の比抵抗を測定するために用いるセンサ部材
に関する。本発明においては、前記先端部のコーン部材
と他端部の固定部との間を接続する中心ロッド部材と、
前記中心ロッド部材の周囲に絶縁筒を介して任意の間隔
で配置する電極と、前記電極と測定装置とを接続するケ
ーブルと、を設けている。また、本発明においては、前
記先端部のコーン部材を中心ロッド部材に対して着脱可
能に設け、前記コーン部材に対してもケーブルを接続可
能に構成することができる。さらに、本発明において
は、前記センサ部材の測定部には、多数の電極部材を任
意の間隔で配置し、前記電極部材の各々に測定装置に接
続するケーブルを配置し、測定装置において選択した電
極部材の間で、地盤の比抵抗値を測定可能に構成するこ
とも可能である。
SUMMARY OF THE INVENTION The present invention relates to a sensor member used to measure the specific resistance of a ground by providing a cone member at a tip portion and penetrating a measuring portion provided with a plurality of electrodes into the ground. In the present invention, a central rod member that connects between the cone member at the distal end and the fixed portion at the other end,
An electrode is provided around the center rod member at an arbitrary interval via an insulating cylinder, and a cable for connecting the electrode to a measuring device is provided. Further, in the present invention, the cone member at the distal end portion may be detachably provided to the center rod member, and a cable may be connected to the cone member. Furthermore, in the present invention, the measuring section of the sensor member has a number of electrode members arranged at arbitrary intervals, a cable connected to a measuring device is arranged at each of the electrode members, and an electrode selected in the measuring device. It is also possible to configure so that the specific resistance value of the ground can be measured between the members.

【0006】前述したように構成したことにより、本発
明においては、センサ部材の測定部に多数の電極を配置
し、地盤中に挿入した状態で任意の電極を選択して、地
盤の比抵抗の測定を行うことが可能であり、1度のセン
サ部材の挿入により、任意の間隔で比抵抗の測定を行う
ことができる。また、本発明のセンサ部材には、センサ
本体の先端部にコーン部材を配置しているので、任意の
圧入手段を用いて地盤に挿入することが可能であり、前
記コーン部材をも電極として用いることができる。さら
に、本発明のセンサは電気探査や電気検層、多成分コー
ン貫入試験等に用いることが可能であり、地盤中に任意
の間隔でセンサ部材を挿入し、多数のセンサ部材の間で
の比抵抗値の測定や、各センサの任意の電極の間での測
定をも行うことができる。
With the above-described configuration, in the present invention, a large number of electrodes are arranged in the measuring section of the sensor member, and an arbitrary electrode is selected in a state where the electrode is inserted into the ground, and the specific resistance of the ground is determined. The measurement can be performed, and the specific resistance can be measured at an arbitrary interval by inserting the sensor member once. Further, in the sensor member of the present invention, since the cone member is arranged at the tip of the sensor main body, it is possible to insert the cone member into the ground using any press-fitting means, and the cone member is also used as an electrode. be able to. Further, the sensor of the present invention can be used for electric prospecting, electric logging, multi-component cone penetration test, and the like. By inserting sensor members at arbitrary intervals in the ground, the ratio between many sensor members can be increased. The measurement of the resistance value and the measurement between arbitrary electrodes of each sensor can be performed.

【0007】[0007]

【発明の実施の形態】図示される例にしたがって、本発
明の地盤比抵抗測定センサを説明する。図1に示す例
は、本発明のセンサ部材1の全体の構成を示すもので、
先端部に先端コーン部材9を配置して地盤中に貫入させ
得るように構成し、本体の上部にはヘッド部10を、下
部には測定部30を配置している。また、前記センサ部
材1の中心部には剛性の大きなパイプ状の中心ロッド部
材5を設けて、前記中心ロッド部材5の下端部に取付け
た端部材8を介して、先端の突部の角度θを60°に設
定した先端コーン部材9を設けており、前記先端コーン
部材9は端部材8に対して着脱可能に構成している。さ
らに、前記中心ロッド部材5の中心部に貫通する孔6に
は、測定部30に配置する電極部材に接続するケーブル
40を通しており、前記ケーブル40は後述するよう
に、多数の電極部材に接続する電線を束ねた状態で構成
する。そして、引き出し部41を介して図示を省略する
測定装置に接続されるもので、前記ケーブルの上部と引
き出し部の所定の区間には絶縁被覆42を設けている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A ground resistivity measurement sensor according to the present invention will be described with reference to the illustrated example. The example shown in FIG. 1 shows the entire configuration of the sensor member 1 of the present invention.
A tip cone member 9 is arranged at the tip so that it can penetrate into the ground, and a head 10 is arranged at the upper part of the main body, and a measuring part 30 is arranged at the lower part. A rigid pipe-shaped central rod member 5 is provided at the center of the sensor member 1, and the angle θ of the protruding portion at the distal end is provided through an end member 8 attached to the lower end of the central rod member 5. Is set to 60 °, and the tip cone member 9 is configured to be detachable from the end member 8. Further, a cable 40 connected to an electrode member arranged in the measuring section 30 is passed through a hole 6 penetrating the center of the center rod member 5, and the cable 40 is connected to a large number of electrode members as described later. It is configured with the wires bundled. The cable is connected to a measuring device (not shown) via a drawer 41, and an insulating coating 42 is provided on a predetermined section between the upper part of the cable and the drawer.

【0008】センサ部材1のヘッド部10は図2に示さ
れるように構成されているもので、中心ロッド部材5の
上部には押圧ネジ部材13をネジ固定し、その上部には
上部ロッド11をネジ部材11aを介して取付けてい
る。前記上部ロッド11は、ヘッド部を地盤中に挿入す
る際に、その挿入深さ等に対応させて、任意の長さに形
成可能に構成するもので、一定の長さのロッドを継ぎ足
して使用できるようにする。また、前記中心ロッド部材
5の上部にはゴムパッキング15を配置し、ゴムパッキ
ングの下部に固定配置する下部ブロック14aと、押圧
ネジ部材13により押圧される上部ブロック14の間
で、ゴムパッキング15を押圧することにより、ゴムパ
ッキング15を用いて中心ロッド部材の孔6を閉じて、
ゴムパッキングの下部の孔6を水密状態に設定する。さ
らに、前記中心ロッド部材5の上部の外周部には、円筒
状の上部固定筒部材20をネジ20aにより固定してい
る。
The head section 10 of the sensor member 1 is constructed as shown in FIG. 2. A pressing screw member 13 is screw-fixed on the upper part of the center rod member 5, and an upper rod 11 is fixed on the upper part. It is mounted via a screw member 11a. The upper rod 11 is configured to be formed to have an arbitrary length in accordance with the insertion depth or the like when the head portion is inserted into the ground. It can be so. In addition, a rubber packing 15 is disposed above the center rod member 5, and the rubber packing 15 is disposed between the lower block 14 a fixedly disposed below the rubber packing and the upper block 14 pressed by the pressing screw member 13. By pressing, the hole 6 of the center rod member is closed using the rubber packing 15,
The hole 6 at the bottom of the rubber packing is set in a watertight state. Further, an upper fixed cylindrical member 20 having a cylindrical shape is fixed to the upper outer peripheral portion of the center rod member 5 with a screw 20a.

【0009】前記ヘッド部10の上部に配置する上部固
定筒部材20と中筒部材21とは金属で構成されてお
り、中心ロッド部材5に対して強固に接続して、センサ
部材の上から加えられる押し込みの際の圧力を、中心ロ
ッド部材5を介して先端コーン部材9に伝達させ得るよ
うにする。なお、前記ヘッド部10に配置する上部ロッ
ド11および上部固定筒部材20は、中心ロッド部材5
との間では電気的に導通するが、前記上部固定筒部材2
0の下部には、筒状の中筒部材21と下筒部材22とを
配置しており、前記下筒部材22を絶縁体で構成して、
ヘッド部を構成する金属部材と、下部の測定部の間を絶
縁している。また、前記下筒部材22と絶縁筒31との
間にはOリング23を配置して、測定部の部分での水密
性を維持させるようにする。
The upper fixed tubular member 20 and the middle tubular member 21 disposed above the head section 10 are made of metal, and are firmly connected to the center rod member 5 to be added from above the sensor member. The pressure at the time of the pushing is transmitted to the tip cone member 9 via the center rod member 5. The upper rod 11 and the upper fixed cylindrical member 20 arranged on the head section 10 are
And the upper fixed cylindrical member 2
In the lower part of 0, a cylindrical middle cylinder member 21 and a lower cylinder member 22 are arranged, and the lower cylinder member 22 is formed of an insulator,
It insulates between the metal member constituting the head section and the lower measuring section. In addition, an O-ring 23 is disposed between the lower cylinder member 22 and the insulating cylinder 31 so as to maintain watertightness at the measurement section.

【0010】前記センサ部材1の下部に配置する測定部
30は、図3に示すように構成されるもので、中心ロッ
ド部材5の下端部にネジで固定される端部材8に対し
て、その上部には絶縁体で構成する複数個の任意の長さ
の円筒状の絶縁筒31……と、前記絶縁筒の間に電極部
材35……とを多数配置している。前記電極部材35
は、図4に示すように構成しているもので、電極部材3
5の内面に設けた凹部36に固定ネジ部材38を用いて
端子部材37を取付け、前記端子部材37に対してケー
ブルの電線39を接続している。また、前記端子部材3
7は中心ロッド部材5に設けた長孔または溝7を通して
いるが、前記端子部材と中心ロッド部材の電気的な導通
を生じないように離間させて設けているが、前記中心ロ
ッド部材と端子部材との間に絶縁部材を配置して、セン
サ部材を地盤中に押し込む際の衝撃等で端子部材が中心
ロッド部材の溝の内面に接したりすることを防止するこ
とも可能である。
The measuring section 30 disposed below the sensor member 1 is constructed as shown in FIG. 3, and is provided for the end member 8 fixed to the lower end of the center rod member 5 with a screw. In the upper part, a plurality of cylindrical insulating cylinders 31 of an arbitrary length made of an insulator and a number of electrode members 35 are arranged between the insulating cylinders. The electrode member 35
Is configured as shown in FIG.
A terminal member 37 is attached to a concave portion 36 provided on the inner surface of the terminal 5 by using a fixing screw member 38, and an electric wire 39 of a cable is connected to the terminal member 37. Further, the terminal member 3
Numeral 7 passes through a long hole or groove 7 provided in the center rod member 5, but is provided so as to be separated so as not to cause electrical conduction between the terminal member and the center rod member. It is also possible to prevent the terminal member from coming into contact with the inner surface of the groove of the central rod member due to an impact or the like when the sensor member is pushed into the ground, by placing an insulating member between them.

【0011】前記センサ部材の長さ方向に一定に、もし
くは任意の間隔で配置する電極部材は、図3に示される
ように、上下に配置する絶縁筒との間でOリング34、
34aを圧縮する状態で配置され、中心ロッド部材5の
周囲面に対して任意の間隔を保持する状態で支持され
る。また、前記測定部においては、電極部材と絶縁筒の
間と、上下端部の絶縁筒の間に各々Oリングを配置して
いるので、中心ロッド部材に対して水が入り込まないよ
うに保護する。
As shown in FIG. 3, the electrode members arranged at a constant length or at an arbitrary interval in the longitudinal direction of the sensor member are connected to an insulating cylinder arranged vertically by an O-ring 34, as shown in FIG.
34a is arranged in a compressed state, and is supported in a state of maintaining an arbitrary interval with respect to the peripheral surface of the center rod member 5. Further, in the measuring section, since O-rings are arranged between the electrode member and the insulating cylinder and between the insulating cylinders at the upper and lower ends, respectively, the water is protected from entering the central rod member. .

【0012】前記センサ部材1においては、前記図2〜
4にそれぞれ示されたような部材を組み合わせて構成し
ているものであり、図1に示されるセンサ部材1を用い
て地盤の比抵抗を測定する際には、ヘッド部10に対応
させて上部ロッド部材11を介して油圧押し込み装置を
配置し、押圧する作用を付与しながら地盤中に挿入す
る。そして、前記ヘッド部10を介して加えれる力は、
中心ロッド部材5を介して端部材8に伝達されるので、
測定部の周囲に配置される電極部材や絶縁筒には大きな
押圧力が加えられることはない。また、前記端部材8の
先端部に取り付けている先端コーン部材9は、土質等に
対応させてその先端部の角度θを任意の角度で構成する
ことが可能である。
In the sensor member 1, as shown in FIGS.
4 when the specific resistance of the ground is measured using the sensor member 1 shown in FIG. A hydraulic pressing device is arranged via the rod member 11 and inserted into the ground while giving a pressing action. And the force applied via the head part 10 is
Since it is transmitted to the end member 8 via the center rod member 5,
A large pressing force is not applied to the electrode members and the insulating cylinder arranged around the measuring section. In addition, the tip cone member 9 attached to the tip of the end member 8 can have an arbitrary angle θ at the tip of the tip cone member 9 in accordance with the soil or the like.

【0013】前述したように構成してなるセンサ部材に
おいて、例えば、4個の電極部材35、35a……を間
隔L1で配置して構成する場合には、L1〜3L1の範
囲で任意の2つの電極部材を選択し、電極間での地盤の
比抵抗の測定を行うことが可能である。例えば、電極部
材の配置間隔を25cmに設定している場合には、地盤に
対して25cm〜75cmの間隔のように、任意の間隔で電
極部材間での通電を行い、地盤の比抵抗の測定作業を行
う。また、前記測定部に対する電極部材の配置間隔L1
は任意に設定が可能であるから、調査の対象とされる地
盤の状態に合わせて、センサ部材の測定部に配置する電
極部材の間隔を任意に設けることが可能である。
In the sensor member configured as described above, for example, when four electrode members 35, 35a... Are arranged at an interval L1, two arbitrary electrode members 35, 35a. It is possible to select an electrode member and measure the specific resistance of the ground between the electrodes. For example, when the arrangement interval of the electrode members is set to 25 cm, energization is performed between the electrode members at an arbitrary interval such as an interval of 25 cm to 75 cm with respect to the ground, and measurement of the specific resistance of the ground is performed. Do the work. Further, the arrangement interval L1 of the electrode members with respect to the measurement unit
Since can be set arbitrarily, it is possible to arbitrarily set the interval between the electrode members arranged in the measurement unit of the sensor member according to the state of the ground to be investigated.

【0014】本発明のセンサ部材は、図5に示すよう
に、測定部30に対して多数個の電極部材を配置して構
成し、測定部の全体の長さLを任意に設定することが可
能である。そして、前記電極部材S1、S2……の相互
の間隔をL1として設定し、各電極部材に接続する電線
をまとめたケーブル40を測定装置45に接続して、地
盤の比抵抗測定装置を構成する。また、前記測定装置4
5としては、従来より用いられている測定装置と同様な
もので構成することができ、測定装置において任意の2
つの電極部材を選択し、前記2つの電極部材の間で電流
/電圧を測定することにより、任意の電極部材の間隔に
対応する地盤の比抵抗値を容易に測定することが可能に
なる。つまり、本発明のセンサ部材を用いる場合には、
多数個の電極部材を測定部に配置し、電極部材の間隔を
任意に設定することにより、薄い層厚の地層から厚い層
厚の地層までを、目的に応じて把握し、全体的な地層分
布と比抵抗値の調査を行うことが可能である。
As shown in FIG. 5, the sensor member of the present invention can be configured by arranging a large number of electrode members with respect to the measuring section 30 and arbitrarily setting the overall length L of the measuring section. It is possible. The distance between the electrode members S1, S2,... Is set as L1, and a cable 40 in which electric wires connected to the respective electrode members are put together is connected to a measuring device 45 to constitute a ground resistivity measuring device. . In addition, the measuring device 4
5 can be constituted by the same as a conventionally used measuring device, and any 2 in the measuring device can be used.
By selecting one of the electrode members and measuring the current / voltage between the two electrode members, it becomes possible to easily measure the specific resistance value of the ground corresponding to an arbitrary distance between the electrode members. That is, when the sensor member of the present invention is used,
By arranging a large number of electrode members in the measuring section and arbitrarily setting the interval between the electrode members, it is possible to grasp from the thin layer to the thick layer according to the purpose, and to understand the overall geological distribution. It is possible to investigate the specific resistance value.

【0015】本発明のセンサ部材を用いる場合に、例え
ば、2極法測定の場合には、測定装置における電極を選
択することにより、狭い電極間隔から、広い電極間隔ま
での複数の間隔で、連続測定を行うことができる。ま
た、ウエンナー法測定の場合には、狭い電極間隔に設定
して単独で測定する場合と、広い電極間隔に設定して単
独で行うことの他に、前記2つの方式を用いて連続的に
比抵抗の測定を行うことが可能である。なお、本発明の
センサ部材は、地盤の比抵抗を測定するために使用する
ものであるが、前記比抵抗値は、土粒子の間の水(間隙
水)の性質(電気伝導度)に強く依存するので、間隙水
が各種の汚染物質の混入で電気伝導度が変化している場
合にも、地盤の比抵抗値を測定することで、その汚染の
度合いをも知ることが可能になる場合もある。さらに、
本発明のセンサは、電気探査や電気検層、多成分コーン
貫入試験等の多数の目的に対応させて用いることがで
き、コーン貫入試験に用いる場合には、先端コーン部材
を試験に対応させた構造のもので付け替えることにより
対応が可能になる。
In the case of using the sensor member of the present invention, for example, in the case of the two-pole method, by selecting the electrodes in the measuring device, the electrodes can be continuously formed at a plurality of intervals from a narrow electrode interval to a wide electrode interval. A measurement can be made. In addition, in the case of the Wenner method measurement, in addition to the case where measurement is performed independently with a narrow electrode interval, the measurement is performed independently with a wide electrode interval, and a continuous comparison is performed using the above two methods. It is possible to perform a resistance measurement. The sensor member of the present invention is used to measure the specific resistance of the ground, and the specific resistance value is strong in the property (electric conductivity) of water (pore water) between soil particles. If the electrical conductivity changes due to the contamination of various contaminants in the pore water, it is possible to know the degree of the contamination by measuring the resistivity of the ground. There is also. further,
The sensor of the present invention can be used for many purposes such as electric exploration and logging, multi-component cone penetration test, etc., and when used for cone penetration test, the tip cone member was used for the test. It is possible to cope by replacing with a structure.

【0016】[0016]

【発明の効果】前述したように構成したことにより、本
発明においては、センサ部材の測定部に多数の電極を配
置し、地盤中に挿入した状態で任意の電極を選択して、
地盤の比抵抗の測定を行うことが可能である。そして、
地盤中に1度センサ部材を挿入することにより、任意の
間隔で比抵抗の測定を行うことができ、効率良く測定作
業を行うことができる。また、本発明のセンサ部材にお
いては、センサ本体の先端部にコーン部材を配置してい
るので、任意の圧入手段を用いて地盤に挿入することが
可能であり、前記コーン部材を電極として用いることが
できる。さらに、本発明のセンサは、地質調査に用いる
他に、電気探査や電気検層、多成分コーン貫入試験等に
用いることが可能であり、多数の目的に対応させて用い
ることができる。
As described above, according to the present invention, in the present invention, a large number of electrodes are arranged in the measuring section of the sensor member, and an arbitrary electrode is selected while being inserted into the ground.
It is possible to measure the specific resistance of the ground. And
By inserting the sensor member into the ground once, the specific resistance can be measured at an arbitrary interval, and the measuring operation can be performed efficiently. Further, in the sensor member of the present invention, since the cone member is disposed at the tip of the sensor main body, it is possible to insert the cone member into the ground using any press-fitting means, and to use the cone member as an electrode. Can be. Further, the sensor of the present invention can be used not only for geological surveys but also for electric prospecting, electric logging, multi-component cone penetration test, and the like, and can be used for many purposes.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 本発明のセンサ部材の構成を示す説明図であ
る。
FIG. 1 is an explanatory diagram showing a configuration of a sensor member of the present invention.

【図2】 センサ部材のヘッド部の構成を示す説明図で
ある。
FIG. 2 is an explanatory diagram illustrating a configuration of a head unit of a sensor member.

【図3】 センサ部材の測定部の構成を示す説明図であ
る。
FIG. 3 is an explanatory diagram illustrating a configuration of a measurement unit of a sensor member.

【図4】 電極部材に対応する断面図である。FIG. 4 is a cross-sectional view corresponding to an electrode member.

【図5】 本発明の別の実施例の説明図である。FIG. 5 is an explanatory diagram of another embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 センサ部材、 5 中心ロッド部材、 9
先端コーン部材、10 ヘッド部、 20 上部固
定筒部材、30 測定部、 31 絶縁筒、 35
電極部材、37 端子部材、 40 ケーブ
ル、 45 測定装置。
1 sensor member, 5 center rod member, 9
Tip cone member, 10 head section, 20 upper fixed cylinder member, 30 measuring section, 31 insulating cylinder, 35
Electrode member, 37 terminal member, 40 cable, 45 measuring device.

フロントページの続き (72)発明者 田屋 直美 東京都墨田区江東橋5−3−13 興亜開発 株式会社内 (72)発明者 松本 基 東京都墨田区江東橋5−3−13 興亜開発 株式会社内 (72)発明者 田中 正二 東京都江東区白河2−15−4 株式会社丸 東製作所内Continued on the front page (72) Inventor Naomi Taya 5-3-13 Kotobashi, Sumida-ku, Tokyo Koa Development Co., Ltd. (72) Inventor Moto Matsumoto 5-3-13 Kotobashi, Sumida-ku, Tokyo Koa Development Co., Ltd. (72) Inventor Shoji Tanaka 2-15-4 Shirakawa, Koto-ku, Tokyo Maruto Co., Ltd.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 先端部にコーン部材を設け、複数の電極
を設けた測定部を地盤に貫入させて地盤の比抵抗を測定
するために用いるセンサ部材において、 前記先端部に配置するコーン部材と他端部の固定部との
間を接続する中心ロッド部材と、 前記中心ロッド部材の周囲に絶縁筒を挟むようにして一
定の間隔で配置する電極部材と、 前記電極部材と測定装置とを接続するケーブルと、 を、設けたことを特徴とする地盤比抵抗測定センサ。
1. A sensor member used to measure a specific resistance of a ground by providing a cone member at a front end portion and penetrating a ground with a measurement unit provided with a plurality of electrodes, wherein the cone member arranged at the front end portion is provided. A center rod member connecting between the fixed portion at the other end, an electrode member arranged at regular intervals so as to sandwich an insulating cylinder around the center rod member, and a cable connecting the electrode member and a measuring device And a ground resistivity measurement sensor, comprising:
【請求項2】 前記先端部のコーン部材を中心ロッド部
材に対して着脱可能に設け、 前記コーン部材に対してもケーブルを接続可能に構成す
ることを特徴とする請求項1に記載の地盤比抵抗測定セ
ンサ。
2. The ground ratio according to claim 1, wherein the cone member at the distal end is detachably provided to a center rod member, and a cable can be connected to the cone member. Resistance measurement sensor.
【請求項3】 前記センサ部材の測定部には、多数の電
極部材を任意の間隔で各々独立させて配置し、 前記電極部材の各々に測定装置に接続するケーブルを配
置し、 測定装置において選択した電極部材の間で、地盤の比抵
抗値を測定可能に構成することを特徴とする請求項1に
記載の地盤比抵抗測定センサ。
3. A plurality of electrode members are independently arranged at arbitrary intervals in a measuring section of the sensor member, and a cable connected to a measuring device is arranged on each of the electrode members. The ground resistivity measurement sensor according to claim 1, wherein the ground resistivity value can be measured between the electrode members.
JP9156597A 1997-03-26 1997-03-26 Base relative resistance measurement sensor Pending JPH10268061A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9156597A JPH10268061A (en) 1997-03-26 1997-03-26 Base relative resistance measurement sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9156597A JPH10268061A (en) 1997-03-26 1997-03-26 Base relative resistance measurement sensor

Publications (1)

Publication Number Publication Date
JPH10268061A true JPH10268061A (en) 1998-10-09

Family

ID=14030047

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9156597A Pending JPH10268061A (en) 1997-03-26 1997-03-26 Base relative resistance measurement sensor

Country Status (1)

Country Link
JP (1) JPH10268061A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001200529A (en) * 1999-12-14 2001-07-27 Sol Cie Method for monitoring diameter of column formed by injection
JP2004347490A (en) * 2003-05-23 2004-12-09 National Institute Of Advanced Industrial & Technology Intrusion probe
EP1391737A3 (en) * 2002-08-23 2005-05-18 Forschungszentrum Jülich Gmbh Apparatus for simultaneous feeding of electrical signals and measuring of potentials in probes
JP2008051502A (en) * 2006-08-22 2008-03-06 Makoto Inoue Multi-electrode electrical logging method for small diameter
JP2010502972A (en) * 2006-09-12 2010-01-28 ポシバ オイ Measuring head and measuring method
JP2011064007A (en) * 2009-09-17 2011-03-31 Nitto Seiko Co Ltd Penetration rod for measuring underground water content
JP2011112506A (en) * 2009-11-26 2011-06-09 Nitto Seiko Co Ltd Penetration rod
JP2011169598A (en) * 2010-02-16 2011-09-01 Hokoku Eng Kk Measuring device of soil improving body
JP2011252812A (en) * 2010-06-03 2011-12-15 Ohbayashi Corp System and method for detecting bleeding channel in bedrock
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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001200529A (en) * 1999-12-14 2001-07-27 Sol Cie Method for monitoring diameter of column formed by injection
EP1391737A3 (en) * 2002-08-23 2005-05-18 Forschungszentrum Jülich Gmbh Apparatus for simultaneous feeding of electrical signals and measuring of potentials in probes
JP2004347490A (en) * 2003-05-23 2004-12-09 National Institute Of Advanced Industrial & Technology Intrusion probe
JP2008051502A (en) * 2006-08-22 2008-03-06 Makoto Inoue Multi-electrode electrical logging method for small diameter
US8330465B2 (en) 2006-09-12 2012-12-11 Posiva Oy Measuring head and measuring method
JP2010502972A (en) * 2006-09-12 2010-01-28 ポシバ オイ Measuring head and measuring method
JP2011064007A (en) * 2009-09-17 2011-03-31 Nitto Seiko Co Ltd Penetration rod for measuring underground water content
JP2011112506A (en) * 2009-11-26 2011-06-09 Nitto Seiko Co Ltd Penetration rod
JP2011169598A (en) * 2010-02-16 2011-09-01 Hokoku Eng Kk Measuring device of soil improving body
JP2011252812A (en) * 2010-06-03 2011-12-15 Ohbayashi Corp System and method for detecting bleeding channel in bedrock
KR101638619B1 (en) * 2015-12-03 2016-07-11 한국지질자원연구원 Grouting monitoring method used resistivity
WO2017094995A1 (en) * 2015-12-03 2017-06-08 한국지질자원연구원 Method for monitoring rock grouting using electrical resistivity
JP2018521245A (en) * 2015-12-03 2018-08-02 コリア インスティチュート オブ ジオサイエンス アンド ミネラル リソースズ Rock grouting monitoring method using electrical resistivity
JP2019132793A (en) * 2018-02-02 2019-08-08 五洋建設株式会社 Sensor for scp method, casing pipe for scp method, sand pile shape evaluation method, and construction management method for scp method
JP2019132096A (en) * 2018-02-02 2019-08-08 五洋建設株式会社 Sensor for scp method, casing pipe for scp method, sand pipe strength evaluation method, and construction management method of scp method

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