IMHE OpenIR  > 山地灾害与地表过程重点实验室
Alternative TitleThe Effects of Secondary Disasters of Attabad Landslide Blocking River on China-Pakistan Highway
陈华勇1,2,3; 陈晓清1,2,3; 赵万玉1; 罗志刚4
Source Publication灾害学
Contribution Rank1
Abstract结合Attabad滑坡堰塞坝现场调查、堰塞湖上游来水来沙数据分析结果,利用人工库区泥沙淤积平衡经验关系,分析了滑坡堰塞湖库区泥沙回淤长度与泥沙上延距离;运用溃决峰值流量计算公式,计算了堰塞湖溃口峰值流量,研究了堰塞湖溃决洪水流量沿程变化规律。结果表明: Attabad堰塞湖上游来流中泥沙平均含量约为1.63 g/L,各干支中,干流Hunza河携带的固体颗粒物质是Attabad堰塞湖淤积的主要物质来源,占整个淤积量的77.64%;在堰塞湖水深81.3m情况下,Attabad堰塞湖的回水长度约为18.03 km,因泥沙淤积而导致回水上延4.48 km;利用肖克列奇溃口坝址最大流量经验公式,评估了Attabad堰塞坝1/4溃决、1/3溃决、1/2溃决情景模式下溃决峰值流量,分别为27923 m~3/s、12523 m~3/s、6936 m~3/s。本研究可为堰塞湖库区公路选线设计及下游地区溃决洪水的风险评估提供参考。
Other AbstractBased on the field investigation of Attabad landslide dams and the analysis results of incoming water and sediment data in the upper reaches of the dammed lake,and the empirical relationship of sediment deposition balance in the artificial reservoir area,the length of sediment deposition and the distance of sediment deposition in the reservoir area of the landslide dammed lake are analyzed. By using the formula of peak burst discharge,the peak burst discharge of the barrier lake is calculated,and the variation law of flood discharge along the break is studied. The results show that the average sediment content in the upstream inflow of Attabad barrier lake is about 1.63 g/L. Among the main branches,the solid particulate matter carried by Hunza River is the main source of sediment in Attabad barrier lake,accounting for 77.64% of the total sediment. Under the condition of 81.3 m water depth of the barrier lake,the backwater length of Attabad barrier lake is about 18.03 km. The backwater is delayed by 4.48 km due to sediment deposition. Based on the empirical formula of the maximum discharge at the site of Shockledge breach, the peak discharge of 1/4 breach,1/3 breach and 1/2 breach scenarios of Attabad dam are evaluated,which are 27923 m~3/s,12523 m~3/s and 6936 m~3/s,respectively. This study can provide reference for highway route selection design and risk assessment of outburst floods in the downstream area of the barrier lake reservoir area.
KeywordAttabad大滑坡 次生灾害 中巴公路 泥沙淤积 溃决洪水
Indexed ByCSCD
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Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Author陈华勇
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding 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
陈华勇,陈晓清,赵万玉,等. Attabad滑坡堵江次生灾害对中巴公路的影响[J]. 灾害学,2019,34(4):81-85.
APA 陈华勇,陈晓清,赵万玉,&罗志刚.(2019).Attabad滑坡堵江次生灾害对中巴公路的影响.灾害学,34(4),81-85.
MLA 陈华勇,et al."Attabad滑坡堵江次生灾害对中巴公路的影响".灾害学 34.4(2019):81-85.
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