IMHE OpenIR  > 山地灾害与地表过程重点实验室
Alternative TitleCauses and Characteristics of 28 June Disastrous Debris Flow Event in Ningnan County of Sichuan,China
胡凯衡1,2; 崔鹏1,2; 马超1,2,3; 周公旦1,2,3; 田蜜1,2,3; 杨东旭1,2,3; 刘维明1,2
Corresponding Author胡凯衡
Source Publication山地学报
Other Abstract
2012 - 06 - 28T5: 00,四川省凉山彝族自治州宁南县矮子沟突降强暴雨,引发了特大灾害性泥石流,造成严重的人员伤亡和财产损失。此次泥石流是在长时间的前期降雨和短历时的强降雨共同作用下,从上游支沟坡面和两侧冲沟短时间内形成的,具有发展和运动历时短,规模中等而峰值流量大,泥石流和洪水交替作用等特点。严重的沟道堵塞和中下游松散物质的补充,使得泥石流的峰值流量是清水流量的3 ~ 4 倍。

A disastrous debris-flow event occurred at Aizi Ravine in Ningnan County, Sichuan Province between 5: 00 and 6: 00 am on June 28,  2012. As of July 4, 7 people were killed and 33 missing. The debris flows were triggered by a local intensive rainfall of 38mm/h after one month antecedent rainfall. The formation area was the subcatchment belonging to the upstream right tributary. Massive material from hill slopes and small gullies was concentrated in a short duration of approximate 30 minutes. The peak discharge was amplified by 3 to 4 times because meandering channels and narrow passes of the main stream accumulated the flows, and a great deal of debris from colluviums,  diluvium, and sediment deposit in the downstream channel were eroded. The event is characterized with short duration of formation and propagation, moderate scale but high peak discharge, and inter-occurrence of floodand debris flow. A lesson from the disaster is low-frequency  debris-flow ravines such as Aizi should be paid special attention in the hydropower engineering area.

Keyword泥石流 矮子沟 暴雨灾害
Indexed ByCSCD ; 北大中文核心
Citation statistics
Cited Times:5[CSCD]   [CSCD Record]
Document Type期刊论文
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
胡凯衡,崔鹏,马超,等. 宁南县矮子沟6.28特大灾害性泥石流成因和特征[J]. 山地学报,2012,30(6):696-700.
APA 胡凯衡.,崔鹏.,马超.,周公旦.,田蜜.,...&刘维明.(2012).宁南县矮子沟6.28特大灾害性泥石流成因和特征.山地学报,30(6),696-700.
MLA 胡凯衡,et al."宁南县矮子沟6.28特大灾害性泥石流成因和特征".山地学报 30.6(2012):696-700.
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