Formation, Characteristics and Prevention on Debris Flow Hazards in
详细信息
- 责任者：Ni Huayong (Chengdu Institute of Geology and Mineral Resources ; Chengdu 610081 ; China) ; Li Zongliang
- 刊名：Journal of Engineering Geology
- 出版年：2010
- 卷期：18(1)
- 关键词：泥石流 ; debris flows ; 四川 ; Sichuan Province
- 页码：p.91-99
- 图表：illus., 3 tables, 16 refs.
- 分类号：1800
- issnNo：ISSN1004-9665
- isbnNo：CN11-3249/P
摘要
On the basis of RS interpretation and field investigation, the forming, characteristics, damages, developing trend were discussed and corresponding prevention advices were put forward: 1)complex geological, steep geomorphology and intense rainfall supply enough loose solid materials and advantageous potential and kinetic energy to debris flows; 2)debris flows typical of group-occurrence as occurrence space is concerned and night-occurrence as occurrence time is concerned; 3)burying, bursting, eroding and blocking consist of the main damage mode of debris flows and 74 residents had lost their lives because of debris flows in history; 4)most debris gullies are at the forming stage and developing stage and the annual period has been shorting from 20 years to less 10 years but the occurrence times have been increasing from 4 to 44 on the contrary; and 5)town debris flows, blocking of debris flows, scenic spot debris flows and ravine debris flows are four main prevention problems in Luding County and corresponding prevention advices were put forward.