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鄂西北片岩高边坡岩石主要为中元古界武当山群和上元古震旦系变质片岩,加之雨量充沛,片岩高边坡在开挖过程中或运营期间出现边坡失稳滑动的地质灾害比比皆是,针对片岩高边坡的防护也是该地区公路设计的重点。本文通过十白高速公路的项目,对片岩高边坡的破坏机制、稳定分析方法进行了阐述。在贯彻高速公路边坡防护以植物防护为主、工程防护为辅的设计理念下,提出了针对片岩高边坡一些防护措施,通过十白高速一年多运营期的检验,边坡防护措施达到了预期的效果。
The rocks of the high schist slope in the northwestern Hubei Province are mainly the Wudang Group of Mesoproterozoic and the Upper Proterozoic Sinian metamorphic schist, combined with the abundant rainfall, the geology of the high slope of the schist during the excavation process or during the operation, Disasters abound, and protection against high schist slips is also the focus of highway design in the area. This article elaborates the failure mechanism and stability analysis of the high slope of schist by the project of the Shibao freeway. Under the design concept that the main slope protection of expressways is plant protection and supplemented by engineering protection, some protective measures are proposed for the high slope of schist, which is verified by the operation of Shibai Expressway for more than one year, and the slope protection measures reach The expected effect.