JP7127947B2 - 地山の圧縮強度調査方法 - Google Patents
地山の圧縮強度調査方法 Download PDFInfo
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- JP7127947B2 JP7127947B2 JP2018197552A JP2018197552A JP7127947B2 JP 7127947 B2 JP7127947 B2 JP 7127947B2 JP 2018197552 A JP2018197552 A JP 2018197552A JP 2018197552 A JP2018197552 A JP 2018197552A JP 7127947 B2 JP7127947 B2 JP 7127947B2
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
11 油圧ドリフタ
12 スリーブ
13 シャンクロッド
14 削孔ビット
15 ロッド
16 ピストン
17 ダンピングピストン
18 プッシングピストン
Claims (2)
- 打撃した地山から受ける反発力を吸収するダンパ装置が装備された削岩機を用意し、
圧縮強度が相互に異なる複数の試験体を前記削岩機で打撃して前記各試験体毎のダンピング圧の脈動振幅を取得し、
取得された前記各試験体毎のダンピング圧の脈動振幅と前記各試験体の圧縮強度とから導かれる近似曲線により、正規化されたダンピング圧の脈動振幅と前記試験体の圧縮強度との相関データを求め、
掘削対象の地山を前記削岩機により打撃した際に計測されたタンピング圧の脈動振幅を前記削岩機の打撃圧で除して正規化したダンピング圧の脈動振幅および前記相関データから地山の圧縮強度を求める、
ことを特徴とする地山の圧縮強度調査方法。 - 複数の前記試験体は、所定の岩石ブロックに複数の削孔を行い、削孔した空孔にセメント系固化材を充填して製作する、
ことを特徴とする請求項1記載の地山の圧縮強度調査方法。
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JP2018197552A JP7127947B2 (ja) | 2018-10-19 | 2018-10-19 | 地山の圧縮強度調査方法 |
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JP2018197552A JP7127947B2 (ja) | 2018-10-19 | 2018-10-19 | 地山の圧縮強度調査方法 |
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JP2020063639A JP2020063639A (ja) | 2020-04-23 |
JP7127947B2 true JP7127947B2 (ja) | 2022-08-30 |
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Families Citing this family (1)
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JP7454526B2 (ja) | 2021-06-14 | 2024-03-22 | 株式会社奥村組 | 地山の圧縮強度推定方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2009161964A (ja) | 2007-12-28 | 2009-07-23 | Ohbayashi Corp | 削孔速度比及び地山パラメータの相関関係算出方法及びそれを用いた切羽前方予測方法 |
JP2013127180A (ja) | 2011-12-19 | 2013-06-27 | Nishimatsu Constr Co Ltd | 岩盤性状の予測方法および予測システム |
Family Cites Families (2)
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JP3238840B2 (ja) * | 1994-11-18 | 2001-12-17 | 不動建設株式会社 | トンネル地山探査システム |
JP2749561B2 (ja) * | 1996-05-31 | 1998-05-13 | 西松建設株式会社 | 岩盤探査方法 |
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2009161964A (ja) | 2007-12-28 | 2009-07-23 | Ohbayashi Corp | 削孔速度比及び地山パラメータの相関関係算出方法及びそれを用いた切羽前方予測方法 |
JP2013127180A (ja) | 2011-12-19 | 2013-06-27 | Nishimatsu Constr Co Ltd | 岩盤性状の予測方法および予測システム |
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