JP2014066571A - Method for discriminating noise by seismometer - Google Patents

Method for discriminating noise by seismometer Download PDF

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JP2014066571A
JP2014066571A JP2012211080A JP2012211080A JP2014066571A JP 2014066571 A JP2014066571 A JP 2014066571A JP 2012211080 A JP2012211080 A JP 2012211080A JP 2012211080 A JP2012211080 A JP 2012211080A JP 2014066571 A JP2014066571 A JP 2014066571A
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seismometer
ground
earthquake
vibrations
underground
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JP6146761B2 (en
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Naoyasu Iwata
直泰 岩田
Shunroku Yamamoto
俊六 山本
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Railway Technical Research Institute
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Abstract

PROBLEM TO BE SOLVED: To provide a method for discriminating the noise by a seismometer capable of discriminating between a seismic ground motion observed by the seismometer and the other vibrations and improving the discrimination accuracy.SOLUTION: In a method for discriminating noise by a seismometer, a surface seismometer 4 for detecting the vibrations other than the earthquake, which propagates on a surface 2, and an underground seismometer 6 for detecting the earthquake motion 5 which propagates from the underground to the surface, are installed, and when the surface seismometer 4 only is activated, the vibration is discriminated as a vibration other than the earthquake, and when both of the underground seismometer 6 and the surface seismometer 4 are activated, the vibration is discriminated as the earthquake motion.

Description

本発明は、地震計のノイズ識別方法に関するものである。   The present invention relates to a seismometer noise identification method.

地震時の早期警報出力のため、鉄道沿線には地震計が設置されている。ただし、線路沿線の地震計は列車振動や道路交通振動、周辺の工事振動などの地震以外の振動がノイズとして混入することから、早期地震諸元推定の誤推定や誤警報の原因となっている。なお、早期地震諸元推定はＰ波初動数秒の微弱な揺れを用いることから、地震以外の振動の影響を極力除く必要がある。   Seismometers are installed along the railway lines for early warning output in the event of an earthquake. However, seismometers along the railway line cause noise, such as train vibrations, road traffic vibrations, and nearby construction vibrations. . In addition, since the early earthquake specification estimation uses the weak shaking of the P wave initial motion several seconds, it is necessary to eliminate the influence of vibrations other than earthquake as much as possible.

佐藤 新二，中村 洋光，「早期地震検知手法の汎用的な評価システムの開発」，ＲＴＲＩ ＲＥＰＯＲＴ Ｖｏｌ．１９，Ｎｏ．１０，２００５．１０，ｐｐ１７−２０Shinji Sato, Hiromitsu Nakamura, “Development of general-purpose evaluation system for early earthquake detection method”, RTRI REPORT Vol. 19, no. 10, 2005.10, pp17-20

上記したように、地震時の運転規制のため、鉄道沿線には地震計が設置されている。この地震計には列車振動や道路交通振動、周辺の工事振動などの地震以外の振動が入力されてしまうので、早期地震諸元推定の誤推定や誤警報を防ぐために地震動とそれ以外の振動を識別する必要がある。
本発明は、上記状況に鑑みて、鉄道沿線に設置される地震計の地震動とそれ以外の振動とを識別し、その識別精度の向上を図り得る、地震計のノイズ識別方法を提供することを目的とする。 As mentioned above, seismometers are installed along the railway lines to control operation during an earthquake. This seismometer will receive vibrations other than earthquakes, such as train vibrations, road traffic vibrations, and surrounding construction vibrations. Need to identify.
In view of the above situation, the present invention provides a seismometer noise identification method capable of identifying seismic motion of a seismometer installed along a railway line and other vibrations and improving the identification accuracy. Objective.

本発明は、上記目的を達成するために、
〔１〕地震計のノイズ識別方法において、地表を伝播する地震以外の振動を検出する地表地震計と、地中から地表へ伝播する地震動を検出する地中地震計とを設置し、前記地表地震計のみが起動した場合には、前記地震以外の振動と識別し、前記地中地震計と前記地表地震計との両方の地震計が起動した場合には、地震動と識別することを特徴とする。 In order to achieve the above object, the present invention provides
[1] In the seismometer noise identification method, a surface seismometer that detects vibrations other than earthquakes that propagate on the surface of the earth and a ground seismometer that detects ground motion that propagates from the ground to the ground are installed, and the surface earthquake When only the gauge is activated, it is identified as vibration other than the earthquake, and when both the underground seismometer and the surface seismometer are activated, it is identified as earthquake motion. .

〔２〕上記〔１〕記載の地震計のノイズ識別方法において、前記地中地震計は前記地震以外の振動に影響を受けない深い位置に設置することを特徴とする。
〔３〕上記〔１〕又は〔２〕記載の地震計のノイズ識別方法において、前記地震以外の振動は列車又は自動車の振動であることを特徴とする。
〔４〕上記〔３〕記載の地震計のノイズ識別方法において、前記地表地震計は鉄道沿線又は道路に沿って多数個配置し、前記地中地震計は前記地表地震計に共通するように前記地表地震計の個数に対して少数個でカバーすることを特徴とする。 [2] The seismometer noise identification method according to [1], wherein the underground seismometer is installed at a deep position not affected by vibrations other than the earthquake.
[3] The seismometer noise identification method according to [1] or [2], wherein the vibration other than the earthquake is a vibration of a train or a car.
[4] In the seismometer noise identification method according to [3] above, a plurality of the surface seismometers are arranged along a railway line or along a road, and the underground seismometer is common to the surface seismometer. It is characterized by covering with a small number of the number of surface seismometers.

本発明によれば、地震動と列車振動や道路交通振動、周辺の工事振動などの地震以外の振動を確実に識別することにより、早期地震諸元推定の誤推定や誤警報を防ぐことができ、安定輸送の向上に寄与することができる。   According to the present invention, by reliably identifying vibrations other than earthquakes such as seismic vibrations and train vibrations, road traffic vibrations, and surrounding construction vibrations, it is possible to prevent erroneous estimation and false alarms of early earthquake element estimation, It can contribute to the improvement of stable transportation.

本発明の実施例を示す地震計のノイズ識別の模式図である。It is a schematic diagram of noise identification of the seismometer showing an embodiment of the present invention. 本発明の実施例を示す地表地震計と地中に深く設置される地中地震計との配置例を示す模式図である。It is a schematic diagram which shows the example of arrangement | positioning with the surface seismometer which shows the Example of this invention, and the underground seismometer deeply installed in the ground.

本発明の地震計のノイズ識別方法は、地表を伝播する地震以外の振動を検出する地表地震計と、地中から地表へ伝播する地震動を検出する地中地震計とを設置し、前記地表地震計のみが起動した場合には、地震以外の振動と識別し、前記地中地震計と前記地表地震計との両方の地震計が起動した場合には、地震動と識別する。   The seismometer noise identification method of the present invention includes a surface seismometer that detects vibrations other than earthquakes that propagate on the ground surface, and a ground seismometer that detects ground motions that propagate from the ground to the ground surface. When only the gauge is activated, it is identified as a vibration other than an earthquake, and when both the underground seismometer and the surface seismometer are activated, it is identified as a seismic motion.

以下、本発明の実施の形態について詳細に説明する。
図１は本発明の実施例を示す地震計のノイズ識別の模式図である。
この図において、１は鉄道線路、２は地表、３は地表２を伝播する列車振動、４は地表地震計、５は地中から地表へ伝播する地震動、６は地中地震計、７は地表地震計４と地中地震計６に接続される列車振動３と地震動５の識別を行う処理装置である。地中地震計６は列車振動に影響を受けない深い位置に設置する。 Hereinafter, embodiments of the present invention will be described in detail.
FIG. 1 is a schematic diagram of noise identification of a seismometer showing an embodiment of the present invention.
In this figure, 1 is a railroad track, 2 is the ground surface, 3 is a train vibration propagating on the surface 2, 4 is a ground seismometer, 5 is a ground motion propagating from the ground to the ground surface, 6 is a ground seismometer, and 7 is a ground surface. This is a processing device for identifying the train vibration 3 and the seismic motion 5 connected to the seismometer 4 and the underground seismometer 6. The underground seismometer 6 is installed in a deep position not affected by train vibration.

図２は本発明の実施例を示す鉄道沿線に設置される地表地震計と地中に深く設置される地中地震計との配置例を示す模式図である。
この図において、地表地震計４は鉄道線路１の沿線に所定距離毎に配置され、地中に深く設置される地中地震計６は複数個の地表地震計４に共通するように地表地震計４の個数に対して少数個でカバーするようにしてもよい。 FIG. 2 is a schematic diagram showing an arrangement example of a ground seismometer installed along a railway line and an underground seismometer deeply installed in the ground according to an embodiment of the present invention.
In this figure, the surface seismometer 4 is arranged along the railway track 1 at a predetermined distance, and the ground seismometer 6 installed deep in the ground is common to a plurality of surface seismometers 4. You may make it cover with a small number with respect to the number of four.

なお、上記実施例では、地表地震計で検出する振動は、鉄道沿線の列車振動について述べたが、これに限定するものではなく、道路に沿って配置される地表地震計にも適用される。さらには、地表地震計で検出される地上すれすれを飛ぶ飛行機の振動を検出する場合や、周辺で行われる工事による振動を検出する場合であってもよい。
なお、本発明は上記実施例に限定されるものではなく、本発明の趣旨に基づき種々の変形が可能であり、これらを本発明の範囲から排除するものではない。 In the above-described embodiment, the vibration detected by the surface seismometer is described as the train vibration along the railway. However, the present invention is not limited to this, and can be applied to a surface seismometer arranged along the road. Furthermore, it may be the case of detecting the vibration of an airplane that flies over the ground that is detected by the surface seismometer, or the case of detecting the vibration caused by construction work performed in the vicinity.
In addition, this invention is not limited to the said Example, Based on the meaning of this invention, a various deformation | transformation is possible and these are not excluded from the scope of the present invention.

本発明の地震計のノイズ識別方法は、地震動とそれ以外の振動とを確実に識別する地震計のノイズ識別方法として利用することができる。   The seismometer noise identification method of the present invention can be used as a seismometer noise identification method for reliably identifying seismic motion and other vibrations.

１ 鉄道線路
２ 地表
３ 地表を伝播する列車振動
４ 地表地震計
５ 地中から地表へ伝播する地震動
６ 地中地震計
７ 処理装置 DESCRIPTION OF SYMBOLS 1 Railroad track 2 Ground surface 3 Train vibration propagating on the ground surface 4 Ground seismometer 5 Ground motion propagating from the ground to the ground surface 6 Ground seismometer 7 Processing device

Claims (4)

地表を伝播する地震以外の振動を検出する地表地震計と、地中から地表へ伝播する地震動を検出する地中地震計とを設置し、前記地表地震計のみが起動した場合には、前記地震以外の振動と識別し、前記地中地震計と前記地表地震計との両方の地震計が起動した場合には、地震動と識別することを特徴とする地震計のノイズ識別方法。   If a surface seismometer that detects vibrations other than earthquakes that propagate on the surface of the earth and a ground seismometer that detects ground motion that propagates from the ground to the surface of the earth are installed and only the surface seismometer is activated, the earthquake A seismometer noise identification method, wherein when a seismometer of both the underground seismometer and the surface seismometer is activated, it is identified as seismic motion. 請求項１記載の地震計のノイズ識別方法において、前記地中地震計は前記地震以外の振動に影響を受けない深い位置に設置することを特徴とする地震計のノイズ識別方法。   2. The seismometer noise identification method according to claim 1, wherein the underground seismometer is installed at a deep position not affected by vibrations other than the earthquake. 請求項１又は２記載の地震計のノイズ識別方法において、前記地震以外の振動は列車又は自動車の振動であることを特徴とする地震計のノイズ識別方法。   3. The seismometer noise identification method according to claim 1, wherein the vibration other than the earthquake is a train or automobile vibration. 請求項３記載の地震計のノイズ識別方法において、前記地表地震計は鉄道沿線又は道路に沿って多数個配置し、前記地中地震計は前記地表地震計に共通するように前記地表地震計の個数に対して少数個でカバーすることを特徴とする地震計のノイズ識別方法。   4. The seismometer noise identification method according to claim 3, wherein a plurality of the surface seismometers are arranged along a railway or along a road, and the underground seismometer is shared by the surface seismometer. A seismometer noise identification method characterized by covering a small number with respect to the number.
JP2012211080A 2012-09-25 2012-09-25 Seismometer noise identification method Expired - Fee Related JP6146761B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11091176B2 (en) * 2017-01-24 2021-08-17 The Boeing Company Support systems and methods for a transportation system

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JP2009103672A (en) * 2007-10-24 2009-05-14 Home Seismometer:Kk Analysis method for discriminating between earthquake and vibration caused by noise
JP2009139105A (en) * 2007-12-03 2009-06-25 Sharp Corp Household earthquake determination apparatus and household electric appliance system
JP2011065496A (en) * 2009-09-18 2011-03-31 Takamisawa Cybernetics Co Ltd Earthquake-reporting system

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JPH10132199A (en) * 1996-10-25 1998-05-22 Matsushita Electric Ind Co Ltd Earthquake sensing gas blast-circuit breaker system
JP2000304586A (en) * 1999-04-21 2000-11-02 Matsushita Electric Ind Co Ltd Seismo-sensitive gas shutoff apparatus and system thereof
JP2006112922A (en) * 2004-10-14 2006-04-27 Toshiba Corp Emergency earthquake report device and method
JP2008522140A (en) * 2004-11-25 2008-06-26 ラヒェニト，ハインツ Earthquake warning system
JP2006343126A (en) * 2005-06-07 2006-12-21 Railway Technical Res Inst Earthquake-time alarm system of wayside seismometer along railroad line
JP2009103672A (en) * 2007-10-24 2009-05-14 Home Seismometer:Kk Analysis method for discriminating between earthquake and vibration caused by noise
JP2009139105A (en) * 2007-12-03 2009-06-25 Sharp Corp Household earthquake determination apparatus and household electric appliance system
JP2011065496A (en) * 2009-09-18 2011-03-31 Takamisawa Cybernetics Co Ltd Earthquake-reporting system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11091176B2 (en) * 2017-01-24 2021-08-17 The Boeing Company Support systems and methods for a transportation system

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