JpGU-AGU Joint Meeting 2017

講演情報

[EE]Eveningポスター発表

セッション記号 H (地球人間圏科学) » H-TT 計測技術・研究手法

[H-TT19] [EE] GEOSCIENTIFIC APPLICATIONS OF HIGH-DEFINITION TOPOGRAPHY AND GEOPHYSICAL MEASUREMENTS

2017年5月23日(火) 17:15 〜 18:30 ポスター会場 (国際展示場 7ホール)

[HTT19-P01] Preliminary Study of Scale Effect on Investigating Unknown Object Using Borehole Electrical Resistivity Tomography

*CHIHPING KUO1YIXUAN LIN1HSINCHANG LIU2CHIHHUA LYU1MEICHUN LIU1 (1.Department and Institute of Civil Engineering and Environmental Informatics, Minghsin University of Science and Technology、2.Disaster Prevention and Water Environment Research Center, National Chiao Tung University)

キーワード:Borehole Electrical Resistivity Tomography, Geophysical Investigating, Scale Effect

An in-situ experiment for investigating ground improvement using borehole electrical resistivity tomography method, also called BHERT, was performed and proposed at JPGU-2016 as well last year. In the study the simulated results from BHERT presented the roughly three dimensional distributing of the grouted materials of the ground improvement in deep underground soil layers. Despite the clear image being obtained, the operating parameters of BHERT and interpreting method make influence on the result, especially size effect. To clarify more details of the mentioned effect for further adoption, an in-situ with smaller size experiment was performed. A series tests with varies soil materials prepared and objects with different shapes buried inside was performed for setting up a standard reference. The result shows that a correcting factor is existing between object size, field size, and electrical parameters. The factors can be normalized to be unitless.