摘要
临湖低山丘陵地区 ,地势起伏不大 ,坡度较缓 ,无大的悬崖峭壁地形 ,自然成因的山体滑坡相对较少。但水系发育 ,降雨充沛 ,近代河湖相冲洪积物分布广 ,其结构松散 ,密实度较低 ,且常处于饱和状态 ,物理力学性质较差 ,工程性能易因环境的改变而恶化 ,这就是滑坡易发的地质基础 ;人类工程活动 ,流水蚀坡 ,地下水流条件的改变和集中降雨等是引发山体滑坡的主要因素 ;改良松散堆积物的工程性能 ,防范水文条件和水文地质条件的不利影响是预防或治理滑坡的关键。
The terrain of hilly land bordering on lake undulates little and slopes gently, which has no big cliffs neither precipice. But its river system developed well and rainfall is abundant. Deposits in the river and the lake are widely dispersed, which is loose, low compactness, and easy to be worse as environment change. All above are basic cause that make landslide happen easily. The main factors, which lead to hill landslide, are following: human engineering activities, corrosion of flowing water, change of groundwater and concentrated rainfall. The keys of preventing and controlling landslide are: to improve the engineering properties of loose deposits and to take precautions against the unfavorable effects of hydrologic and hydro geological conditions.
出处
《地质灾害与环境保护》
2003年第1期18-23,共6页
Journal of Geological Hazards and Environment Preservation
基金
湖南省教育厅基金资助课题 ( 0 1C381)
