Birdwatch Archive

Birdwatch Note

2024-10-27 03:26:48 UTC - MISINFORMED_OR_POTENTIALLY_MISLEADING

本ポストの画像の継ぎ目にある隙間は「遊間」と呼ばれるものであり、国内で使用されている25mの「定尺レール」で一般的に設置される隙間です。 レールは鉄の塊である事から熱膨張が発生するため、この遊間が夏季は縮まり、冬季は広がる動きが発生します。 夏季の遊間が無い状態では「レール張り出し」が発生し、冬季の遊間が多すぎる場合は「レール破断」が発生し脱線などの重大な事故につながるため、各鉄道会社は厳しい規制を持って遊間の管理を行っています。 なお、近年はロングレールと呼ばれるレール同士を溶接し遊間を無くしたレールが敷設され始めています。 https://www.jstage.jst.go.jp/article/jscej1984/1998/604/1998_604_59/_pdf https://www.jrhokkaido.co.jp/corporate/safe/pdf_07/202006.pdf

Written by 8BC1EDEB94D0012B2DE024CC6775321086C0D298768BD52069960C6FB8ACB5DF
Participant Details

Original Tweet

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All Information

  • ID - 1850378586471202927
  • noteId - 1850378586471202927
  • participantId -
  • noteAuthorParticipantId - 8BC1EDEB94D0012B2DE024CC6775321086C0D298768BD52069960C6FB8ACB5DF
  • createdAtMillis - 1729999608043
  • tweetId - 1850283728473591980
  • classification - MISINFORMED_OR_POTENTIALLY_MISLEADING
  • believable -
  • harmful -
  • validationDifficulty -
  • misleadingOther - 0
  • misleadingFactualError - 1
  • misleadingManipulatedMedia - 0
  • misleadingOutdatedInformation - 0
  • misleadingMissingImportantContext - 0
  • misleadingUnverifiedClaimAsFact - 0
  • misleadingSatire - 1
  • notMisleadingOther - 0
  • notMisleadingFactuallyCorrect - 0
  • notMisleadingOutdatedButNotWhenWritten - 0
  • notMisleadingClearlySatire - 0
  • notMisleadingPersonalOpinion - 0
  • trustworthySources - 1
  • summary
    • 本ポストの画像の継ぎ目にある隙間は「遊間」と呼ばれるものであり、国内で使用されている25mの「定尺レール」で一般的に設置される隙間です。 レールは鉄の塊である事から熱膨張が発生するため、この遊間が夏季は縮まり、冬季は広がる動きが発生します。 夏季の遊間が無い状態では「レール張り出し」が発生し、冬季の遊間が多すぎる場合は「レール破断」が発生し脱線などの重大な事故につながるため、各鉄道会社は厳しい規制を持って遊間の管理を行っています。 なお、近年はロングレールと呼ばれるレール同士を溶接し遊間を無くしたレールが敷設され始めています。 https://www.jstage.jst.go.jp/article/jscej1984/1998/604/1998_604_59/_pdf https://www.jrhokkaido.co.jp/corporate/safe/pdf_07/202006.pdf

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