SPH-based simulation of flow process of a landslide at Hongao landfill in China

Landfills are the most popular means of disposing of construction solid waste owing to the low-cost, large treatment volume and strong adaptability. However, landfill collapses and landslides are common, posing a risk to lives and property. A catastrophic landslide, not triggered by heavy rainfall o...

Full description

Saved in:
Bibliographic Details
Published in:Natural hazards (Dordrecht) 2018-09, Vol.93 (3), p.1113-1126
Main Authors: Zhu, Chongqiang, Huang, Yu, Zhan, Liang-tong
Format: Article
Language:English
Subjects:
Adaptability
Civil Engineering
Computational fluid dynamics
Computer simulation
Construction industry wastes
Disasters
Earth and Environmental Science
Earth Sciences
Earthquakes
Emergency preparedness
Environmental Management
Fluid flow
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Heavy rainfall
Hydrodynamics
Hydrogeology
Landfill
Landfill construction
Landfills
Landslides
Landslides & mudslides
Mathematical models
Methods
Natural Hazards
Numerical simulations
Original Paper
Rain
Rainfall
Ring shear tests
Seismic activity
Shear
Shear tests
Simulation
Smooth particle hydrodynamics
Soil
Solid wastes
Viscosity
Viscosity coefficient
Viscosity coefficients
Waste disposal
Waste disposal sites
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Landfills are the most popular means of disposing of construction solid waste owing to the low-cost, large treatment volume and strong adaptability. However, landfill collapses and landslides are common, posing a risk to lives and property. A catastrophic landslide, not triggered by heavy rainfall or earthquakes, occurred on December 20, 2015, at Hongao landfill in Guangming New district of Shenzhen, China. The collapsed waste soil flowed 1100 m down a slope with an elevation difference of 100 m. This catastrophic landslide is typical of long-runout disasters with high mobility, which result in great loss to life and property. In this paper, we focused on reproducing the flow processes and simulating the arriving area of the landslide at Hongao landfill using a full three-dimensional (3D) smoothed particle hydrodynamics (SPH) method. A series of undrained ring shear tests were conducted to determine the viscosity coefficient for the numerical simulation. The calculated geometry of the landslide using the full 3D SPH method agreed well with the field data. Hence, the combination of ring shear tests and SPH method can be widely used to predict the dynamic behavior of potential landslides in landfills, to reduce or prevent similar disasters.
ISSN:0921-030X
1573-0840
DOI:10.1007/s11069-018-3342-8