Features and Formation Mechanism of Debris Flow in Dabaiyang Gully in Upper Reaches of Minjiang River
详细信息
- 责任者：Wu Yufu (State Key Laboratory of Geohazards Prevention and Geoenvironment Protection ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Yu Bin
- 刊名：Geoscience
- 出版年：2012
- 卷期：26(1)
- 关键词：泥石流 ; debris flows ; 岷江 ; Minjiang River
- 页码：p.107-113
- 图表：4 illus., 5 tables, 15 refs.
- 分类号：1702
- issnNo：ISSN1000-8527
- isbnNo：CN11-2035/P
摘要
The Dabaiyang gully is located at the Jiaochang epsilon-type structure in the north of Diexi town, Maoxian County, Sichuan Province, which is in upper reaches of Minjiang River. After the analysis of the landform, available loose materials and water conditions of two tributaries (Dagou and Xiaogou gullies) in Dabaiyang gully, it was obtained that there are sufficient conditions for the formation of tributary debris flow, which explains the intense activity of debris flow in the Xiaogou gully. The formation mechanism of debris flow was also analyzed. It reveals that the formation of debris flow caused by the fire hose effect in the Dagou gully, and by the fire hose effect and the burst of barrage body in the Xiaogou gully.