冰碛湖漫溢型溃决临界水文条件

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Abstract Flood water and debris flow caused by glacial lake burst caused by glacial landslide falling into the lake is a serious mountain disaster in glacial area of (Tibet). After the experiment formula calculating threshold flow velocity of non-uniform sand was gotten, with d95 of the glacial till in the dyke can be threshold sizes, calculation formula of critical height (H0)of overflow head was guided. Then, calculation formulas of ascendant height (H1) of lake water surface and surge height (H2) on burst mouth caused by glacial landslide falling into moraine lake are guided. Therefore, critical hydrologic condition of moraine lake burst with overflow type are: the burst is inevitable as H1>H0;the burst is possible as H1

Key words： moraine lake terminal moraine bank overflow burst critical height of overflow head glacial landslide Guangxiecuo lake

Received: 11 March 2004

PACS:

U412.23

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	Articles by authors
	JIANG Zhong-xin
	CUI Peng
	JIANG Liang-wei

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JIANG Zhong-xin,CUI Peng,JIANG Liang-wei. CRITICAL HYDROLOGIC CONDITION FOR OVERFLOW BURST OF MORAINE LAKE[J]. 铁道工程学报, 2004, 21(4): 21-26.

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http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2004/V21/I4/21

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