JP2010526955A - 4−d電気比抵抗モニタリングによる地盤補強効果判定方法 - Google Patents
4−d電気比抵抗モニタリングによる地盤補強効果判定方法 Download PDFInfo
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
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- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
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- E02D1/00—Investigation of foundation soil in situ
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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Abstract
【解決手段】本発明は、セメントモルタルグラウティング工法による地下空洞の地盤補強効果を判定する方法であって、(a)地盤補強領域に長期間電気比抵抗を測定できる測線(Survey Line)を設けるステップと、(b)上記測線を用いてモルタル注入前に補強領域に対する電気比抵抗を測定し、その測定結果を用いて3次元電気比抵抗逆算を遂行して補強領域に対する3次元電気比抵抗分布を映像化するステップと、(c)上記測線を用いてモルタル注入途中またはモルタル注入後、各特定状態別に電気比抵抗を測定し、その測定結果を用いて3次元電気比抵抗逆算を遂行して補強領域に対する3次元電気比抵抗分布を映像化するステップと、(d)上記(b)ステップで測定された電気比抵抗と上記(c)ステップで測定された電気比抵抗の変化比を算出し、これを用いて補強領域に対する3次元電気比抵抗分布を映像化して地盤補強効果を判定するステップと、を含んでなされる。
【選択図】なし
Description
Claims (4)
- セメントモルタルグラウティング工法による地下空洞の地盤補強効果を判定する方法であって、
(a)地盤補強領域に電気比抵抗を測定できる測線(Survey Line)を設けるステップと、
(b)前記測線を用いてモルタル注入前に補強領域に対する電気比抵抗を測定し、その測定結果を用いて3次元電気比抵抗逆算を遂行して補強領域に対する3次元電気比抵抗分布を映像化するステップと、
(c)前記測線を用いてモルタル注入途中またはモルタル注入後、各特定状態別に電気比抵抗を測定し、その測定結果を用いて3次元電気比抵抗逆算を遂行して補強領域に対する3次元電気比抵抗分布を映像化するステップと、
(d)前記(b)ステップで測定された注入前の電気比抵抗を基準にして前記(c)ステップで測定された注入途中または注入後の電気比抵抗に対する変化比を算出し、これを用いて補強領域に対する3次元電気比抵抗分布を映像化して地盤補強効果を判定するステップと、
を含んでなることを特徴とする4−D電気比抵抗モニタリングによる地盤補強効果判定方法。 - 前記測線は、
地表から一定の深さで掘削した底に電極を一定の間隔で設けて、前記各電極に電線を連結して電線保護管を通じてターミナルボードに接地させることを特徴とする請求項1に記載の4−D電気比抵抗モニタリングによる地盤補強効果判定方法。 - 前記電極と前記電線との連結部は、
シリコンで絶縁及び防水処理することを特徴とする請求項2に記載の4−D電気比抵抗モニタリングによる地盤補強効果判定方法。 - 前記地盤補強効果判定は、
補強されたモルタルの電気比抵抗が石灰岩空洞に存在する地下水の電気比抵抗より低いという特性を用いて補強前及び補強後の電気比抵抗を比較することによって、補強領域に対する補強効果を判定することを特徴とする請求項1に記載の4−D電気比抵抗モニタリングによる地盤補強効果判定方法。
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KR1020080028758A KR100939654B1 (ko) | 2008-03-28 | 2008-03-28 | 4-d 전기비저항 모니터링에 의한 지반보강 효과 판정 방법 |
PCT/KR2009/001570 WO2009120035A2 (ko) | 2008-03-28 | 2009-03-27 | 4-d 전기비저항 모니터링에 의한 지반보강 효과 판정 방법 |
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EP2309259A1 (en) * | 2009-10-12 | 2011-04-13 | Services Pétroliers Schlumberger | Methods and apparatus for monitoring cement sheath degradation related to CO2 exposure |
KR101146152B1 (ko) * | 2010-04-27 | 2012-05-17 | 한국과학기술원 | 터널 전기비저항 탐사 방법 및 그 장치 |
KR101269517B1 (ko) * | 2011-05-24 | 2013-06-04 | (주)희송지오텍 | 실시간 전기비저항 측정 시스템 |
AP2016009458A0 (en) * | 2014-02-28 | 2016-09-30 | Barnard Andries Jacobus | Grouted rock support testing apparatus and method |
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CN113687445B (zh) * | 2021-10-27 | 2022-01-04 | 成都理工大学 | 基于多源数据融合及电磁震三维反演的注浆评价方法 |
CN115728190A (zh) * | 2022-11-29 | 2023-03-03 | 鲁东大学 | 基于三维成像技术的注浆锚杆索浆液扩散效果评价方法 |
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CN114137036A (zh) * | 2021-11-29 | 2022-03-04 | 安徽理工大学 | 一种基于邻源电位电阻率的注浆范围快速检测方法 |
CN114137036B (zh) * | 2021-11-29 | 2024-03-29 | 安徽理工大学 | 一种基于邻源电位电阻率的注浆范围快速检测方法 |
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US20100315103A1 (en) | 2010-12-16 |
KR100939654B1 (ko) | 2010-02-03 |
WO2009120035A3 (ko) | 2009-11-19 |
WO2009120035A2 (ko) | 2009-10-01 |
JP4876185B2 (ja) | 2012-02-15 |
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US8217668B2 (en) | 2012-07-10 |
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