JP6397151B1 - 地盤調査方法 - Google Patents
地盤調査方法 Download PDFInfo
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- JP6397151B1 JP6397151B1 JP2018085288A JP2018085288A JP6397151B1 JP 6397151 B1 JP6397151 B1 JP 6397151B1 JP 2018085288 A JP2018085288 A JP 2018085288A JP 2018085288 A JP2018085288 A JP 2018085288A JP 6397151 B1 JP6397151 B1 JP 6397151B1
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Abstract
Description
2 掘削穴
3 掘削刃
4 回転部材(スクリュー)
5 アースオーガ装置
6(6a、6b、6c) レーダ送受信機
7 解析装置
8 ケーブル
G 地盤
G1 軟弱地盤
G2 支持地盤
Claims (3)
- 地盤(G)に所定深さまで回転部材(4)を用いて掘削穴(2)を掘削する掘削工程と、
前記回転部材(4)を前記掘削穴(2)から一度撤去し、前記回転部材(4)の下端に設けられた掘削刃(3)を取り外した上で、前記回転部材(4)の下端に設けられた、又は、前記回転部材(4)とは別のロッドの下端部に設けられた、前記回転部材(4)又は前記ロッドの回転軸中心から径方向外向きに偏位して設けられ、この掘削穴(2)の下方に向けてレーダを送信するとともに反射波を受信するレーダ送受信機(6)を挿入した上で、前記回転部材(4)を回転させて、前記掘削穴(2)の深さ方向と前記回転の回転走査方向に亘る前記地盤(G)の内部の支持地盤(G2)の深さを知るための2次元情報を得る調査工程と、
前記調査工程の終了後に、前記掘削穴(2)を更に大径の回転部材(4)を用いて拡径し、前記支持地盤(G2)によって支持される支持杭(1)を立設する工程と、
を備えた地盤調査方法。 - 前記レーダ送受信機(6)が、前記回転部材(4)の下端の径方向最外周部に設けられている請求項1に記載の地盤調査方法。
- 前記調査工程の後に、前記地盤(G)を更に深く掘削する追加掘削工程を備えた請求項1又は2に記載の地盤調査方法。
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JP2018085288A JP6397151B1 (ja) | 2018-04-26 | 2018-04-26 | 地盤調査方法 |
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JP2018085288A JP6397151B1 (ja) | 2018-04-26 | 2018-04-26 | 地盤調査方法 |
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JP6397151B1 true JP6397151B1 (ja) | 2018-09-26 |
JP2019190165A JP2019190165A (ja) | 2019-10-31 |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4842402B1 (ja) * | 1970-02-20 | 1973-12-12 | ||
JPS6434584U (ja) * | 1987-08-26 | 1989-03-02 | ||
JPH0355582U (ja) * | 1989-09-30 | 1991-05-29 | ||
JPH1184021A (ja) * | 1997-09-08 | 1999-03-26 | Mitsui Eng & Shipbuild Co Ltd | 地下埋設物探査装置 |
JP2003090885A (ja) * | 2001-09-19 | 2003-03-28 | Koden Electronics Co Ltd | 地中レーダ用アンテナ装置 |
US20120006597A1 (en) * | 2008-06-03 | 2012-01-12 | Tracto-Technik Gmbh & Co. Kg | Drill head |
JP2017129388A (ja) * | 2016-01-18 | 2017-07-27 | 株式会社豊神建設 | ケーシング式土留工による危険物探査方法及びケーシング式土留工 |
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2018
- 2018-04-26 JP JP2018085288A patent/JP6397151B1/ja active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4842402B1 (ja) * | 1970-02-20 | 1973-12-12 | ||
JPS6434584U (ja) * | 1987-08-26 | 1989-03-02 | ||
JPH0355582U (ja) * | 1989-09-30 | 1991-05-29 | ||
JPH1184021A (ja) * | 1997-09-08 | 1999-03-26 | Mitsui Eng & Shipbuild Co Ltd | 地下埋設物探査装置 |
JP2003090885A (ja) * | 2001-09-19 | 2003-03-28 | Koden Electronics Co Ltd | 地中レーダ用アンテナ装置 |
US20120006597A1 (en) * | 2008-06-03 | 2012-01-12 | Tracto-Technik Gmbh & Co. Kg | Drill head |
JP2017129388A (ja) * | 2016-01-18 | 2017-07-27 | 株式会社豊神建設 | ケーシング式土留工による危険物探査方法及びケーシング式土留工 |
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