黑方台地区滑坡群地貌特征研究

Study on the Geomorphic Features of Landslide Groups in Heifangtai Area

在野外实地调查的基础上,对甘肃省永靖县黑方台地区滑坡后缘裂缝及滑坡群形态特征进行了综合分析。选取了台地南侧岸坡较为明显且易于测量的30处滑坡,进行了坡高、主滑方向以及坡度等方面的统计分析。最后分析了地层产状与构造活动对滑坡地貌特征的影响,提出了评价滑坡稳定性的地貌标志,以及根据地貌特征判别滑坡稳定性的重要参数--形状系数。

Based on the field investigation,a comprehensive analysis of the morphological characteristics of the land⁃slide trailing edge cracks and landslide group in the Heifangtai area was carried out.30 landslides with obvious and easy-to-measure slopes on the south side of the platform were selected,and statistical analysis was carried out on slope height,main slid direction and slope.Finally,the influence of stratum occurrence and tectonic activity on the landslide's geomorphic characteristics is analyzed,and the geomorphic markers for evaluating the stability of land⁃slides are put forward,as well as an important parameter for judging the stability of landslides based on the geomor⁃phic characteristics-shape coefficient.