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首页> 外文期刊>Frontiers of earth science >Development of a GIS-based failure investigation system for highway soil slopes
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Development of a GIS-based failure investigation system for highway soil slopes

机译：基于GIS的公路土坡破坏调查系统的开发。

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A framework for preparation of an early warning system was developed for Maryland, using a GIS database and a collective overlay of maps that highlight highway slopes susceptible to soil slides or slope failures in advance through spatial and statistical analysis. Data for existing soil slope failures was collected from geotechnical reports and field visits. A total of 48 slope failures were recorded and analyzed. Six factors, including event precipitation, geological formation, land cover, slope history, slope angle, and elevation were considered to affect highway soil slope stability. The observed trends indicate that precipitation and poor surface or subsurface drainage conditions are principal factors causing slope failures. 96% of the failed slopes have an open drainage section. A majority of the failed slopes lie in regions with relatively high event precipitation (P > 200 mm). 90% of the existing failures are surficial erosion type failures, and only 1 out of the 42 slope failures is deep rotational type failure. More than half of the analyzed slope failures have occurred in regions having low density land cover. 46% of failures are on slopes with slope angles between 20A degrees and 30A degrees. Influx of more data relating to failed slopes should give rise to more trends, and thus the developed slope management system will aid the state highway engineers in prudential budget allocation and prioritizing different remediation projects based on the literature reviewed on the principles, concepts, techniques, and methodology for slope instability evaluation (Leshchinsky et al., 2015).
机译：为马里兰州开发了一个预警系统的框架，该系统使用GIS数据库和一组地图叠加图来预先通过空间和统计分析突出显示易受土壤滑坡或斜坡破坏影响的公路斜坡。现有的土壤边坡破坏数据是从岩土工程报告和实地考察中收集的。总共记录并分析了48个边坡破坏。包括事件降水，地质构造，土地覆盖，边坡历史，边坡角度和高程在内的六个因素被认为会影响公路土壤边坡的稳定性。观察到的趋势表明，降水和不良的地表或地下排水条件是导致边坡破坏的主要因素。 96％的失败斜坡有一个开放的排水段。大多数失败的斜坡位于事件降水相对较高的地区（P> 200 mm）。现有的破坏中有90％是表面侵蚀型破坏，在42个边坡破坏中只有1个是深层旋转型破坏。超过一半的分析的边坡破坏发生在低密度土地覆盖的地区。 46％的故障发生在倾斜角度在20A度和30A度之间的斜坡上。与失败的斜坡有关的更多数据的涌入将引起更多的趋势，因此，已开发的斜坡管理系统将根据有关原理，概念，技术和方法的文献回顾，帮助州公路工程师审慎地分配预算并确定不同的修复项目的优先级。边坡失稳评估的方法和方法（Leshchinsky等人，2015）。

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