摘要
黄河上游戈龙布滑坡位于积石峡水电站库区内,经过现场调查可知,戈龙布滑坡为一大型滑坡,整个滑坡体积达到5040万m3,一共分为4个区。研究表明,戈龙布滑坡成因机制为滑移-拉裂型,滑坡在黄河右岸经过高速远程下滑过后撞击上游山体,部分滑体越过黄河堆积于左岸并堵塞黄河达数百年,堰塞湖内有厚度达30余米的纹泥沉积,初步分析滑坡坝的高度在100m左右,库水深在70m左右,滑坡堵江时代在Q4时期。滑坡坝溃决后导致黄河改道,残留的滑体分别位移黄河的左岸和右岸。
The Gelongbu landslide located at the reservoir region of Jishixia hydropower station dam in upper reach Yellow River. Its volume was of 50.4 × 10^6m3. It had 4 regions. The result of landslide investigation indicates that the formation mechanism of Gelongbu landslide is sliding - fracturing. The landslide debris flew down with a high speed on the right side of Yellow River and hit a hill.. Part of its debris flew across the river and deposited on the left side. Its debris had blocked the fiver for several hundred years and formed a landslide dam like. The thickness of sediment in the landslide dam lake was 30 m based on the measurement of this investigation. Height of the land- slide dam was about 100 m and water depth of the lake was about 70 m based on the preliminary analysis of this in- vestigation. The epoch of landslide is Q4- The debris were still left on left and right sides of Yellow River. The Yellow river path was changed at this location. It was possibly due to a sudden collapse of the landslide dam.
出处
《工程地质学报》
CSCD
北大核心
2009年第4期483-488,共6页
Journal of Engineering Geology
基金
国家自然科学基金项目(编号:40372127)
关键词
滑坡
成因机制
堰塞湖
稳定性
Landslide, Formation mechanism, Dammed lake, Stability, Yellow river
