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四川彭州龙门山镇8·18 泥石流灾害特征与成灾模式分析
Alternative TitleCharacteristics and Causes of 8·18 Debris Flow Hazards at the Longmenshan Town,Pengzhou,Sichuan
葛永刚; 宋国虎; 郭朝旭; 孔应德
Corresponding Author葛永刚
Source Publication水利学报
Other Abstract




The catastrophic debris flows on Aug.18, 2012 resulted in huge property loss in Longmenshan Town, Pengzhou, China. Debris flows occurred in 60 sites and 20 gully debris flows distributed along Baishui River, intensively destroyed the buildings at the right bank. Debris flows were featured with less than 2% of fine soil content, the density of 1.74~1.91g/m3, the peak discharge of 360~1 274m3/s as well as the process of rainstorm-landslide-debris flow-dammed lake-outburst flood. The discharge of debris flow remarkably amplified in small gullies,equaling to 5.0~29 times that before Wenchuan Earthquake. High-velocity and large discharge debris flows made direct hazards by intensively impacting, scouring and burying constructions as well as burying and destructing highway base. Outburst flood and river channel rise induced by debris flows enlarged the stricken areas and losses. The irrational location of constructions and the destruction of debris flow control constructions leaded to huge property losses. Encountering the active debris flow hazards in the future, it was strongly suggested for mitigation that strengthened the prediction of debris flows change trend, assessed risk of the dangerous debris flow gullies, relocated reconstruction based on debris flow risk assessment, improved the standards of control construction, reconstructed destructed highway at Xiaojiaping and improved the capabilities of prevention and mitigation.

Keyword泥石流 成因 特征 成灾模式 龙门山镇
Subject Area自然地理学
Indexed ByEI ; 北大中文核心
Funding Organization国家重点基础研究发展计划(973计划)课题(2011CB409902);国家科技支撑计划课题(2012BAK10B04)
Accession numberAccession number:20131616220798
Document Type期刊论文
Recommended Citation
GB/T 7714
葛永刚,宋国虎,郭朝旭,等. 四川彭州龙门山镇8·18 泥石流灾害特征与成灾模式分析[J]. 水利学报,2012,43(S2):147-154.
APA 葛永刚,宋国虎,郭朝旭,&孔应德.(2012).四川彭州龙门山镇8·18 泥石流灾害特征与成灾模式分析.水利学报,43(S2),147-154.
MLA 葛永刚,et al."四川彭州龙门山镇8·18 泥石流灾害特征与成灾模式分析".水利学报 43.S2(2012):147-154.
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