Anisotropy of magnetic susceptibility analysis of deformed kaolinite: implications for evaluating landslides |
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| Authors: | Manish A Mamtani Aniruddha Sengupta |
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| Institution: | (1) Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur, 721302, India;(2) Department of Civil Engineering, Indian Institute of Technology, Kharagpur, 721302, India |
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| Abstract: | Plane strain tests were performed on seven kaolinite blocks, each of which developed shear bands. Anisotropy of magnetic susceptibility
(AMS) analysis of the kaolinite reveals a threshold degree of magnetic anisotropy (P′) exceeding which shear bands develop. Since P′ is a strain-intensity gauge and soils are known to develop shear bands prior to landsliding, it is concluded that soil in
every landslide-prone region must have its unique threshold P′ exceeding which it develops shear bands before failing. Therefore, AMS monitoring of soil in landslide prone regions is
proposed as a potential tool in the management of natural hazard zones. |
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