CAJ | 학술논문

岑巩县大榕滑坡发生于2012年6月29日，属于大型平缓堆积层滑坡。其主体堆积区斜坡坡度8°～20°，主滑区基覆界面倾角4°～11°；下伏基岩中存在强风化层；2009年以来，有持续人工弃土堆积于左侧汇水区。结合滑坡特征及三维数值分析可见，大榕滑坡是由持续人工弃土堆积和强降雨共同诱发产生，弃土堆积区首先局部失稳，导致坡脚破坏而逐步引发滑坡整体失稳；滑面位于下伏强风化层中。结合典型案例，总结了大型平缓堆积层滑坡结构特征，强降雨是必要诱发因素；失稳时，局部往往带动下伏基岩失稳。
잠공현대용활파발생우2012년6월29일，속우대형평완퇴적층활파。기주체퇴적구사파파도8°～20°，주활구기복계면경각4°～11°；하복기암중존재강풍화층；2009년이래，유지속인공기토퇴적우좌측회수구。결합활파특정급삼유수치분석가견，대용활파시유지속인공기토퇴적화강강우공동유발산생，기토퇴적구수선국부실은，도치파각파배이축보인발활파정체실은；활면위우하복강풍화층중。결합전형안례，총결료대형평완퇴적층활파결구특정，강강우시필요유발인소；실은시，국부왕왕대동하복기암실은。
Darong landslide in Cengong county happened on June 29,201 2.It is a largescale gentle inclinedlandslide accumulation deposits.The gradient of slope in the main accumulation area is between 8°to 20°.The dipangle of the interface between the bedrock and accumulation layer in main sliding area is between 4°to 1 1 °.Stronglyweathered layer distributes in the underlying bedrock.Since 2009,artificial soil has been continuously piled up onthe catchment area on the left of accumulation area.Based on characteristics and 3D numerical simulation analysis,the artificial soil and heavy rainfall are the common inducing factor of Darong landslide.They firstly locally madethe artificial soil area unstable.Its foot is therefore damaged,and gradually leads to the slope failure.The slidingsurface is in the strongly weathered layer.In combination with other typical cases,the structure characteristics ofthe large gentle inclined accumulation landslide are summarized.Heavy rainfall is the necessary inducing factor ofthis landslide.When these landslides occur,the local underlying bedrock is often driven.