Next Article in Journal
Mixed Convective Flow of Micropolar Nanofluid across a Horizontal Cylinder in Saturated Porous Medium
Previous Article in Journal
Availability and Fade Margin Calculations for 5G Microwave and Millimeter-Wave Anyhaul Links
Open AccessArticle

Forecasting Landslides via Three-Dimensional Discrete Element Modeling: Helong Landslide Case Study

1
College of Construction Engineering, Jilin University, Changchun 130026, China
2
Jilin Sixth Geological Prospecting Engineering Team, Yanji 133401, China
3
Jilin Institute of Geo-Environment Monitoring, Changchun 130021 China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(23), 5242; https://doi.org/10.3390/app9235242
Received: 5 November 2019 / Revised: 26 November 2019 / Accepted: 28 November 2019 / Published: 2 December 2019
(This article belongs to the Section Earth Sciences and Geography)
Forecasting the occurrence potential of landslides is important but challenging. We aimed to forecast the failure potential of the Helong landslide, which is temporarily stable but has clearly deformed in recent years. To achieve the goal, we used reconnaissance, remote sensing, drilling, laboratory tests, topographical analysis, and electrical resistivity tomography (ERT). The factor of safety (FOS) of the slope was first calculated using a limit equilibrium method. The results show the FOS of the slope was 1.856 under natural conditions, 1.506 under the earthquake conditions, 1.318 under light rainfall, 0.986 under heavy rainfall, 1.075 under light rainfall and earthquake, and 0.832 under simultaneous heavy rainfall and earthquake. When the FOS is less than 1.35, the slope is considered metastable according to the Technical Code for Building Slope Engineering (GB50330-2013) published by the Chinese Ministry of Housing and Urban-Rural Development. Based on the drilling data and digital elevation data, a three-dimensional discrete element method (DEM) model was used to simulate potential landslides. The simulation was used to examine catastrophic slope failure under heavy rainfall conditions within a range of friction coefficients and the corresponding affected areas were determined. Then, we analyzed a typical run-out process. The dynamic information of the run-out behavior, including velocity, run-out distance, and depth, were obtained, which is useful for decision support and future landslide hazard assessment. View Full-Text
Keywords: landslide; discrete element method; stability analysis; failure potential forecasting landslide; discrete element method; stability analysis; failure potential forecasting
Show Figures

Figure 1

MDPI and ACS Style

Peng, W.; Song, S.; Yu, C.; Bao, Y.; Sui, J.; Hu, Y. Forecasting Landslides via Three-Dimensional Discrete Element Modeling: Helong Landslide Case Study. Appl. Sci. 2019, 9, 5242.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop