甘肃黑方台黄土滑坡类型及其发育特征研究

位于黄土高原的甘肃黑方台由于近年来的农业灌溉用水使地下水位抬升,造成了大量黄土滑坡,进而给当地造成了严重损失。对滑坡体进行了现场调查,在查明黑方台基本环境地质条件的基础上,采用统计分析法和定性分析方法对滑坡进行空间分区和分类,将其滑坡分为黄土—泥岩滑坡、浅层黄土滑坡、黄土泥流和突发型黄土滑坡4类,并结合其基本地质条件对不同类型滑坡的基本特征数据进行对比分析,得出各类滑坡基本特征差异的主要影响因素。最后对黑方台滑坡的防治提出了指导建议。

Research on types and characteristics of loess landslides in Gansu Heifangtai

Heifangtai is one of the typical loess platforms in Gansu Province , where the underground water level was upraised and many landslides occurred in recent years due to long term agricultural irrigation .And the frequent loss landslides have seri-ously threatened the local development .Based on the field investigation of the loss landslides in Heifangtai and its environmental geological conditions , we made a spatial-division and classification for the landslide by using statistical and qualitative analysis method.The landslides can be divided into four types including loess -mudstone landslides , shallow loess landslides , loess earth flows and sudden loess landslides .In addition , the main influential factors for different features of various landslides were concluded through analysis of the basic geological conditions .Finally, some suggestions to prevent the landslides were put for-ward.