検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

光学的手法を用いた亀裂開口幅測定及び亀裂内濃度分布測定手法の開発

Development of measurement system of aperture and tracer concentration distribution in a single fracture by optical visualization method

佐藤 久; Xiao, J.; 澤田 淳

Sato, Hisashi; Xiao, J.; Sawada, Atsushi

亀裂内の透水・物質移行特性は、亀裂内の不均質な開口幅分布に強く影響を受けることから、その影響を検討するためには、亀裂開口幅分布を詳細に測定する必要がある。開口幅測定手法には幾つかの手法があるが、光学的手法は測定解像度が高い、亀裂内のトレーサー移行を観察できる等の利点があることから、光学的手法による亀裂開口幅及び亀裂内のトレーサー濃度の測定装置を開発し、透明レプリカ試験体を対象に、開口幅測定及び亀裂内トレーサー濃度分布の測定を行った。その結果、光学的手法による亀裂開口幅測定の有効性を確認できた。また、亀裂内のトレーサー濃度分布も亀裂開口幅分布の不均質性による影響を除去した濃度分布を取得できることが確認できた。

It is important to investigate fracture aperture distribution in order to study the influences of heterogeneous aperture distribution onto the fracture hydraulic and mass transport properties. There are several aperture measurement methods, but an optical method has an advantage that measurement resolution is high and tracer movement can be observed. We have developed aperture measurement and tracer movement measuring system by optical method, and have made transparent replica, and measured aperture distribution and tracer concentration distribution. As a result, the optical method was able to confirm the effectiveness of aperture measurement. In addition, the optical method could acquire the tracer concentration distribution which was not disturbed by the influence of heterogeneous aperture distribution.

Access

:

- Accesses

InCites™

:

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.