Development of a GIS-based failure investigation system for highway soil slopes

摘要: A framework for preparation of an early warning system was developed Maryland, using a GIS database and collective overlay maps that highlight highway slopes susceptible to soil slides or slope failures in advance through spatial statistical analysis. Data existing collected from geotechnical reports field visits. total 48 were recorded analyzed. Six factors, including event precipitation, geological formation, land cover, history, angle, elevation considered affect stability. The observed trends indicate precipitation poor surface subsurface drainage conditions are principal factors causing failures. 96% the failed have open section. majority lie regions with relatively high (P>200 mm). 90% surficial erosion type failures, only 1 out 42 is deep rotational failure. More than half analyzed occurred having low density cover. 46% on angles between 20° 30°. Influx more data relating should give rise trends, thus management will aid state engineers prudential budget allocation prioritizing different remediation projects based literature reviewed principles, concepts, techniques, methodology instability evaluation (Leshchinsky et al., 2015).