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Stabilization of a Large Landslide Impacting Highway 73 in the Missouri River Badlands

机译：密苏里河荒地大型山体滑坡影响高速公路73的稳定

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Along a portion of Highway 73 west of Lake Sakakawea in the Missouri River badlands of North Dakota, landslide activity had been observed for several years. This activity damaged the heavily traveled roadway, causing temporary closure or constraints on the maximum allowed speed. This large, deep-seated landslide includes high-plasticity clays with limited long-term shear strength and lignite seams carrying groundwater that also contributed to the slope failures. A stabilization design was developed to capture groundwater and route it away from the failure, and drilled shafts were installed as reinforcement to increase the factor of safety and limit long-term displacements. The paper addresses the field mapping, geotechnical investigations, laboratory testing, performance monitoring, design, and construction of the remedial measures.
机译：沿着北达科他湖坂川湖坂川湖西部73号高速公路，几年来观察了滑坡活动。这项活动损坏了大量走向的道路，导致暂时关闭或限制最大允许的速度。这款大型深层滑坡包括高可塑性粘土，长期剪切强度和携带地下水的褐煤接缝也有助于倾斜故障。开发了稳定设计以捕获地下水并将其远离故障，钻孔轴作为加固，以增加安全系数和限制长期位移。本文涉及现场映射，岩土性调查，实验室检测，性能监测，设计和建设的补救措施。

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