Anisotropy of magnetic susceptibility analysis of deformed kaolinite: implications for evaluating landslides

被引:17
作者
Mamtani, Manish A. [1 ]
Sengupta, Aniruddha [2 ]
机构
[1] Indian Inst Technol, Dept Geol & Geophys, Kharagpur 721302, W Bengal, India
[2] Indian Inst Technol, Dept Civil Engn, Kharagpur 721302, W Bengal, India
关键词
Anisotropy of magnetic susceptibility; Kaolinite; Deformation; Shear bands; Landslide; BOOM CLAY; STRAIN; EVOLUTION; BEHAVIOR; FABRICS; MODELS; BANDS; ZONE;
D O I
10.1007/s00531-008-0336-x
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
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.
引用
收藏
页码:1721 / 1725
页数:5
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