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首页> 外文期刊>Natural Hazards Review >Bioengineering Techniques Associated with Soil Nailing Applied to Slope Stabilization and Erosion Control
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Bioengineering Techniques Associated with Soil Nailing Applied to Slope Stabilization and Erosion Control

机译：与土壤钉钉相关的生物工程技术在边坡稳定和侵蚀控制中的应用

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Slope failures in the tropics are directly related to the rainfall intensity. Refining techniques to prevent rain-induced slope failures play an important role, especially for the risky occupied areas close to big cities-the final destination from people who migrates from rural to urban areas. This paper presents the implementation of bioengineering associated with nailing techniques to control erosion and prevent rain-induced failures in a 35-m-high rocky slope (Ponteio Slope). The exposed phyllite rocks of this slope and the absence of a proper drainage system have been the identified as the trigger mechanism to the successive failures verified since 1953. In the past 15 years, berms and a concreted cover were built as attempts to stabilize this slope, but no drainage system was associated with those works. In December 2003, the implementation of bioengineering and soil nailing techniques in a total area of 1,700 m~2 with a declivity, for the intact slope, of about 63° began. After the cleanup of the talus and the fissured concrete cover, the rocky mass was reinforced by connecting the superficial loose phyllites to the deeper and more resistant quartzite layer with 6-m steel reinforced bars, 130 in total. The subsequent operations carried out were seeding, rolling out the coconut fiber blankets and reinforced mat onto the slope surface, and finally, the placement of a metallic net anchored to the rods by bolts. The natural aesthetics of the whole bioengineering system adopted was improved as well as helping to improve the natural drainage system and avoiding the uplift pore pressures. The association of "soil nailing" and bioengineering techniques were cost-effective and succeeded in stabilizing the slope after several previous attempts. The slope was monitoring during the techniques implementation in 2003 and in the subsequent year, 2004. No failure occurred.
机译：热带地区的边坡破坏与降雨强度直接相关。防止降雨引起的边坡破坏的精炼技术起着重要的作用，尤其是对于靠近大城市的高风险被占领地区-从农村迁移到城市的人们的最终目的地。本文介绍了与钉技术相关联的生物工程技术的实施，以控制侵蚀并防止降雨在35米高的岩石斜坡（Ponteio斜坡）中引起的破坏。自从1953年以来，已确认该斜坡裸露的千枚岩岩石和缺乏适当的排水系统是引发连续性破坏的触发机制。在过去的15年中，为稳定该斜坡建造了护堤和混凝土覆盖层，但这些工程都没有排水系统。 2003年12月，在总面积为1,700 m〜2的区域内实施了生物工程和土钉技术，对于完整的坡度，其倾斜度约为63°。清理距骨和裂隙的混凝土覆盖层后，通过用6米长的钢筋（总共130根）将浅层松散的千枚橄榄石连接到更深，更坚固的石英岩层上来加固岩体。随后进行的操作是播种，将椰子纤维毯子和加固垫铺到斜坡表面上，最后，用螺栓将金属网锚固到杆上。采用的整个生物工程系统的自然美感得到了改善，并有助于改善自然排水系统并避免了孔隙压力的升高。 “土钉”技术和生物工程技术的结合具有成本效益，并且在先前的几次尝试之后成功地稳定了斜坡。在2003年和2004年的技术实施期间对斜坡进行了监测。未发生任何故障。

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