波戈溪滑坡形态特征及其形成机理

THE CHARACTERICSTICS OF STATUS AND FORMATION MECHANISM OF THE BOGEXI LANDSLIDE

波戈溪滑坡是位于金沙江流域高山峡谷区的一特大型的、若干块体组合而成的复合型基岩—松散层推移—牵引式老滑坡,从纵向上可以明显地划分为上部牵引段、中部蠕滑段和下部滑动段。其形成与演化都受到区域内多种自然、人为因素的复合作用和影响。由于川藏公路的修筑,滑坡出现了许多复活迹象,在现阶段仍多处于近临界平衡或蠕滑状态,并有进一步活动的趋势。

The Bogexi landslide, lying in the high mountain gorge area of the Jinsha river valley, is a enormous, compound, rock loose ground and old landslide, composing of a certain amount of mass. It may be divided into three parts: i. e. the upper towed part, the middle wriggling part and the lower sliding part on lengthwise direction. Its formation and evolution are affected by verious natural and human factors in this region. The Chuan - Zang Road being built, the old landslide re vive. At present, it is being the stage of eretical balance or wriggle, and has a trend of developme nt.