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- Title
Application of the SNMR method to investigate the groundwater characteristics of the Yangjiashan landslide.
- Authors
Xin, Zhou; Miao, Cheng; Kai, Lu
- Abstract
The Yangjiashan landslide is a typical giant ancient rock landslide located in Enshi City, Hubei Province, China. Since the landslide was reactivated in August 1980, it has destroyed more than 630,000 m2 of farmland and 160 houses, and 200 people have been left homeless. At present, the landslide remains at the stage of creep deformation, which seriously threatens the safety of residents and their property. In regard to the formation mechanism of the Yangjiashan landslide, it is generally accepted that the landslide may be attributed to the horizontal push failure phenomenon of horizontal strata. Alternatively, the traction effect caused by the erosion and collapse of the trailing edge of the landslide may enhance the landslide occurrence frequency. Regardless of the landslide formation mechanism, groundwater lubrication of near-horizontal strata and the combined action of hydrostatic and dynamic pressures are important factors influencing landslide stability. In this study, the surface nuclear magnetic resonance (SNMR) geophysical method under large-scale nondestructive detection is applied to determine the groundwater characteristics of the Yangjiashan landslide. The SNMR method can realize the detection of groundwater information by observing the relaxation process of hydrogen nuclei in groundwater. Moreover, the water content per unit volume of underground media can be determined according to the initial amplitude and time constant of the relaxation signal, and important hydrogeological characteristics, such as the permeability coefficient, can be inferred. These results can provide important references for the stability analysis of the Yangjiashan landslide.
- Subjects
HUBEI Sheng (China); GROUNDWATER research; LANDSLIDES; HYDROSTATIC pressure; DYNAMIC pressure; NUCLEAR magnetic resonance
- Publication
Arabian Journal of Geosciences, 2022, Vol 15, Issue 21, p1
- ISSN
1866-7511
- Publication type
Article
- DOI
10.1007/s12517-022-10821-z