成都理工大学学报（自然科学版）2012，Vol.39Issue(6)：636-642,7.
都江堰市龙池镇“8·13”蜂桶岩泥石流灾害特征
Features of Fengtongyan debris flow hazard on August 13, 2010 in Longchi town of Dujiangyan, Sichuan, China
摘要
Abstract
The Fengtongyan debris flow is one of the new hazards occurred on August 13, 2010 in Longchi of Dujiangyan city in the Wenchuan earthquake area in Sichuan of China. Based on the site investigation and experiment data, the authors analyze the formation conditions, disaster processes and characteristics of the Fengtongyan debris flow in this paper. Driven by the precipitation, some loose solid materials of the Fengtongyan valley flowed downstream, eroding the surface to form a flood ditch. The "8 ·13" rainstorm induced a large number of loose solid materials on the slope to collect in the flood ditch, and rapidly flowed downstream with the loose solid materials within the flood ditch to form the debris flow. The hour precipitation triggering the debris flow is 53. 8 mm and the total precipitation is 209. 8 mm on August 13, 2010. This rainfall return period is 10 years. The bulk density is 2. 0 g/cm3, the yield stress is 4999 Pa, the discharge is 104 m3/s, and the debris flow scale is 7.4×104 m3. The channel of the Fengtongyan gully is deep after the "8 ·13" debris flow, and there are still some loose solid materials in the valley. These are conditions to form debris flows again, so the area at the mouth of the Fengtongyan gully is not suitable for residential construction.关键词
汶川地震区/龙池镇/泥石流/灾害特征Key words
Wenchuan earthquake area/ Longchi/ debris flow/ hazard feature分类
天文与地球科学引用本文复制引用
刘清华,唐川,马煜..都江堰市龙池镇“8·13”蜂桶岩泥石流灾害特征[J].成都理工大学学报（自然科学版）,2012,39(6):636-642,7.基金项目
国家科技支撑计划项目(2011BAK12B01) （2011BAK12B01）
科技基础性工作专项课题(2011FY110100) （2011FY110100）
