【摘要】 丹巴梭坡堆积体是一巨型第四纪堆积体,分布在大渡河的左右两岸,其上有114座珍贵藏碉。对堆积体的成因有冰川成因、冰水成因和泥石流成因等各种观点。在对堆积体现场进行详细勘察的基础上,对藏碉群斜坡巨型堆积体的成因进行了深入分析,得出左岸堆积体的成因主要以崩滑作用为主;右岸堆积体是冰源泥石流和崩塌、滑坡等作用的混杂堆积。并在后来的钻孔揭示中得以验证。这对于川西地区深厚覆盖层成因的揭示以及藏碉群文物的保护均具有重要的意义。更多还原

【Abstract】 The Danba Sopo deposits,a huge Quaternary accumulation of soils and rock blocks,are distributed in the banks of Dadu River near Houziyan hydropower dam.There are 144 Stone Towers made by ancient Tibetan scattered on this deposit.The formation of the huge deposits were considered as glaciation,glacio-fluvium or debris-flow.The paper presents a detailed field investigation of the deposits.The formation of the huge deposits is further examined. It is found that the deposits at left bank are formed mainly through collapsing and sliding of mountainous slopes and the deposits at the right bank are a accumulation of slope collapses mixed with glacio-fluvial and debris-flow deposits.The findings are validated!with drillhole exploration in the deposits.The findings may be valuable to the understanding of the formation of thick deposits at the western Sichuan region and to the protection measures of the Stone Towers.更多还原