二滩库区泥石流发育发展趋势初探  

Development of Debris Flow around Er-tan Reservoir

作　　者：胡平华[1] 孔纪名[1] 

机构地区：[1]中国科学院水利部成都山地灾害与环境研究所,四川成都610041

出　　处：《山地学报》2004年第5期578-582,共5页Mountain Research

摘　　要：二滩水电站蓄水发电运行以来 ,库区环境已发生了很大的变化 ,影响泥石流发育发展的因素相应也有所改变 ,通过对二滩库区泥石流现状的调查研究 ,认为库区泥石流有减弱的趋势 。This paper discusses various changes of the elements which affect the development of debris flow after the hydropower station has been built .It bases on the results obtained by investigating the whole drainage of Er-tan Reservoir.With the increase of underground water level and air humidity, the soil water content increases as well, which favours the resumption of vegetation.The activity of debris flow in this area has decreased. The annual sedimentary amount transported by debris flow is about 2.2×10~7 m^3,which will not vary in the near future. However, there are also some artificial elements that affect the development of debris flow at present, such as some small scale coal extraction and highway construction in the upper reaches of the drainage. The paper also considers that the debris flow in area of the Er-tan reservoir has weakened and it has been in a situation which now corresponds with a new environment.

关 键 词：泥石流 二滩库区 发育发展 

分 类 号：P64[天文地球—地质矿产勘探]