NDLI: Evolution Mechanism and Rainfall Warning Criteria for Maijianwo Slope in Henan Province, China

Content Provider	Springer Nature Link
Author	Pan, Yi heng Chen, Jian ping Wu, Li qing Wang, Wei Tan, Fu lin
Copyright Year	2016
Abstract	In this study, two different research methods are applied to investigate the evolution mechanism and rainfall warning criteria for Maijianwo slope located in Henan Province, China. On the one hand, an indoor-model test is performed under artificial rainfall and based on similarity theory. A set of monitoring system is utilized to track the moisture content, deformation and cracks of critical points of the model during the test. On the other hand, the numerical simulation is carried out to provide an insight into the variation of unstable zone and factor of safety for the landslide with the increasing cumulative rainfall. Results indicate that the evolution process of Maijianwo slope is composed of three stages of initiating, accelerating and failure respectively, and stability of slope decreases gradually as cumulative rainfall increases. Based on the evolution mechanism of retrogressive landslide verified by both model test and numerical simulation, cracking time of critical positions on the slope prior to each stage were set as the initiating time of each stage and the cumulative rainfall associated with each initiating time (E1 = 75 mm, E2 = 180 mm) has been defined as the warning criteria for the Maijianwo slope. As the cumulative rainfall in Maijianwo slope reaches 75 and 180 mm, the landslide orange and red warning codes are issued, respectively. Otherwise, the slope is in a safe condition when the cumulative rainfall is less than 75 mm.
Starting Page	183
Ending Page	194
Page Count	12
File Format	PDF
ISSN	09603182
Journal	Geotechnical and Geological Engineering
Volume Number	35
Issue Number	1
e-ISSN	15731529
Language	English
Publisher	Springer International Publishing
Publisher Date	2016-10-11
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Evolution mechanism Rainfall warning criteria Retrogressive landslide Model test Numerical simulation Geotechnical Engineering & Applied Earth Sciences Hydrogeology Terrestrial Pollution Waste Management/Waste Technology Civil Engineering
Content Type	Text
Resource Type	Article
Subject	Soil Science Geology Architecture Geotechnical Engineering and Engineering Geology

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