西藏波密米堆冰湖溃决浅议

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 成都山地所知识仓储（2009年以前）

	西藏波密米堆冰湖溃决浅议
	李德基; 游勇
刊名	山地研究
	1992
卷号	10 期号:4 页码:219-224
关键词	西藏波密米堆沟冰湖溃决泥石流
ISSN号	1000-002X
其他题名	BURSTING OF THE MIDUI MORAINE LAKE IN BOMI,XIZANG
通讯作者	李德基
合作状况	其它
中文摘要	1988年7月15日西藏波密米堆终碛湖发生溃决,最大洪峰流量1270立方米/秒,溃决水量540万立方米,形成了大规模的泥石流-洪水灾害。冰湖溃决的原因是;终碛堤存在渗漏薄弱环节,堤内有埋藏冰;持续高温和冰川融水的潜热使埋藏冰融化,由潜蚀而迅速发展成管涌导致溃决。
英文摘要	Midui Moraine Lake lies in the middle reaches of Midui Gully. Midui Gully is located in 29°23’-29°32’N,96°28’-96°33’E, being a U-shape valley. Its length is 16. Okm. The basin area is 123. 8km2. The upper reaches of the moraine lake belong to monsoon marine glacier area, whose area is 32. Okm2. The length of the lower reaches is 7. 6km, longitudinal gradient is 30. 0‰,and it converges into the Parlung Zangbo River northwards. The junction is at 97km east from Bomi Town.In this region,the climate belongs to mountain temperate zone,and the vegetation of base belt is coniferous and broad-leaved mixed forest.Midui Moraine Lake is mainly supplied by glacial melt water. The generated age of the moraine lake was about 300 years ago. The width of the lake is 550m,the length is 950m,the depth is 31m (the maximum water level is at alt. 3,818m) ,and the volume is 6. 4M(m)3. The end moraine bar on the north bank of the lake is lower at the east and west ends to form discharge outlet. The east end is at 3,817m and the west end called as burst is at <3,817m.The reasons of the moraine lake bursting are:1. Seine 1980s,the temprature is rising and the precipitation has been more abundant,thus the supplied glacial melt water increased;2. At the low end,the component materials are softer,and there are buried ice in it. Here,the water seepage flows off every day. Therefore the latent erosion from glacial melt water made the moraine lake to broken.At 23’30 of 15,July,in 1988,Midui Moraine Lake broke off from the burst. Bursting duration is up to 10min. Maximum flood discharge is 1,270m3/s,the flood peak duration >30min, the recession duration is 13h and outbursting water volume is 5. 4M(m)3.
学科主题	灾害学
收录类别	CSCD ; 北大中文核心
语种	中文
CSCD记录号	CSCD:182768
公开日期	2011-09-02
内容类型	期刊论文
源URL	[http://192.168.143.20:8080/handle/131551/3437]
专题	成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前）成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
作者单位	中国科学院、水利部成都山地灾害与环境研究所
推荐引用方式 GB/T 7714	李德基,游勇. 西藏波密米堆冰湖溃决浅议[J]. 山地研究,1992,10(4):219-224.
APA	李德基,&游勇.(1992).西藏波密米堆冰湖溃决浅议.山地研究,10(4),219-224.
MLA	李德基,et al."西藏波密米堆冰湖溃决浅议".山地研究 10.4(1992):219-224.