A WebGIS decision-support system for slope stability based on limit-equilibrium modelling

作者：Thiebes Benni^*; Bell Rainer; Glade Thomas; Jaeger Stefan; Anderson Malcolm; Holcombe Liz

来源：Engineering Geology, 2013, 158: 109-118.

DOI：10.1016/j.enggeo.2013.03.004

• Limit-equilibrium analysis
• Combined Hydrology and Stability Model (CHASM)
• Physically-based modelling
• Web processing service (WPS)
• Decision-support system
• Swabian Alb

Physically-based models are frequently applied for local landslide analyses and predictions in order to prevent the potentially disastrous consequences of slope failures. Limit-equilibrium modelling approaches are very common. However, the application of such models can be very time-consuming, and due to its two-dimensional nature, it generally has to be repeated for each profile that is investigated. In this study, the physically-based two-dimensional landslide model CHASM (Combined Hydrology and Stability Model) was implemented within a web-based GIS (Geographical Information System) environment for a study area in the Swabian Alb, Germany. The required input data for CHASM modelling were derived from a variety of data sources including geological maps, drillings, geophysical investigations, hydrological monitoring, laboratory analyses and literature sources. The implemented CHASM decision-support system is based on open-source software and utilises the WPS (web processing service) standard to execute the model algorithms on a server. The presented system allows the user to select from a variety of input data and model parameters to quickly perform limit-equilibrium analyses of slope stability. Simulation results are automatically stored to a database and can be visualised for interpretation. The implemented CHASM decision-support system represents an innovative prototype which demonstrates a promising approach to engage landslide modelling.

• 出版日期2013-5-24
• 单位南京师范大学