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首页> 外文会议>Twentieth International Congress on Large Dams Vol.1: Question 76; Sep 19-22, 2000; Beijing, China >POSSIBILITY OF FAILURE FOR VENEMO DAM, NORWAY AN ANALYSIS WITH FOCUS ON THE RELIABILITY OF THE FLOOD DIVERSION WORKS
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POSSIBILITY OF FAILURE FOR VENEMO DAM, NORWAY AN ANALYSIS WITH FOCUS ON THE RELIABILITY OF THE FLOOD DIVERSION WORKS

机译：挪威VENEMO DAM发生故障的可能性，重点分析了洪水改道工作的可靠性

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摘要

Venemo Dam is a 240 meters long and 64 meters high rockfill dam with an upstream facing of asphalt concrete constructed in the period from 1960 to 1964. The flood diversion takes place through spillway gates, and not by way of a free overflow crest which is the most common design in Norwegian rockfill dams. The analysis for Venemo Dam therefore focuses on reliability of the flood diversion works. Songa Dam is located 7 km upstream and a dam break will affect the probability of failure for Venemo Dam. In 1997 a separate analysis was carried out for Songa Dam, and total annual probability of failure was calculated as 2.3 * 10~(-4). A dam break of this dam will in any case lead to the collapse of Venemo Dam, irrespective of whether the gates here are operated successfully. Annual probability of failure for Venemo Dam is calculated to 2.48 * 10~(-4), and the major contributor to this is the breaching of Songa Dam. This event represents as much as 96% of total annual probability of failure for Venemo Dam. The analysis for Venemo Dam verifies that dam break of upstream dams is the most serious threat to dams downstream in the same watercourse.
机译：Venemo水坝是一座长240米，高64米的堆石坝，其上游面为1960年至1964年间建造的沥青混凝土。洪水的转移是通过溢洪道闸门进行的，而不是通过自由溢流波峰进行的。挪威堆石坝中最常见的设计。因此，对Venemo大坝的分析着重于引水工程的可靠性。 Songa大坝位于上游7公里处，溃坝会影响Venemo大坝的倒塌可能性。 1997年，对Songa大坝进行了单独的分析，计算出的年度总失效概率为2.3 * 10〜（-4）。无论该闸门是否成功运行，该水坝的溃坝无论如何都会导致Venemo水坝倒塌。 Venemo大坝的年故障概率经计算为2.48 * 10〜（-4），这主要是由于Songa大坝的破坏。此事件占Venemo大坝每年失败总概率的96％。对Venemo水坝的分析证实，上游水坝的溃坝是对同一河道中下游水坝的最严重威胁。

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