地震次生灾害作用下高坝风险分析研究
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摘要
为开发我国西部地区丰富的水电资源,一批高坝大库已建或正在开工建设当中。西部地区是我国强震多发区,因此对高坝进行地震风险分析研究至关重要。坝址区多位于高山峡谷之中,在高烈度地震发生时,极易产生地震作用下的边坡滑动,滑坡入库将激起巨大涌浪,所产生的高水头冲击力作用于高坝上将会额外增大高坝风险。本文针对以上问题,对高坝在地震及地震所产生的滑坡次生灾害共同作用下的风险问题进行了研究,分析对比了高坝在不同作用组合条件下的风险,得出的结论可为高坝地震风险控制提供依据。
A large number of high dams were built or are under construction to develop the rich hydropower resources in west China.In this area earthquakes occur frequently,and analysis of high-dam seismic risk is crucial to these dams.In most of the dam site areas,hill slope under high-intensity earthquakes is prone to sliding,and for those in mountains and canyons,huge water waves could be created by soil mass sliding into the reservoir or river stream.Thus dam impacting by high-head water becomes an extra risk of dam safety.This paper presents a risk analysis of high dam under both seismic action and its second disaster such as landsliding and different action combinations.
A large number of high dams were built or are under construction to develop the rich hydropower resources in west China.In this area earthquakes occur frequently,and analysis of high-dam seismic risk is crucial to these dams.In most of the dam site areas,hill slope under high-intensity earthquakes is prone to sliding,and for those in mountains and canyons,huge water waves could be created by soil mass sliding into the reservoir or river stream.Thus dam impacting by high-head water becomes an extra risk of dam safety.This paper presents a risk analysis of high dam under both seismic action and its second disaster such as landsliding and different action combinations.
引文
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[4]任兴伟,唐益群,代云霞,方瑜.滑坡初始涌浪高度计算方法的改进及其应用[J].水利学报,2009,40(9):1116～1119.REN Xingwei,TANG Yiqun,DAI Yunxia,FANG Yu.Improved method for calculating landslide initial surge height[J].Journal ofHydraulic Engineering,2009,40(9):1116～1119.(in Chinese)
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[6]JTJ213-98.海港水文规范[S].JTJ213-98.Harbor hydrological standard[S].(in Chinese)
[7]DL5073-2000.水工建筑物抗震设计规范[S].DL5073-2000.Code for seismic design of Hydraulic structures[S].(in Chinese)
[8]JIA Chao,GAO Feng,Li Yong.Progressive Failure Research on Foundation Surface of Concrete Gravity Dam[J].Advanced MaterialsResearch.2010,(163～167):1038～1043.
[9]林继镛.水工建筑物[M].北京:中国水利水电出版社,2006.LIN Jiyong.Hydraulic structures[M].Beijing:China Waterpower Press,2006.(in Chinese)
[10]SL319-2005.混凝土重力坝设计规范[S].SL319-2005.Concrete gravity dam design standard[S].(in Chinese)
[2]贾超,金峰,王品江,张楚汉.高坝抗震设防问题的探讨[J].地震工程与工程振动,2005,25(1):155～158.JIA Chao,JIN Feng,WANG Pinjiang,ZHANG Chuhan.Design earthquake level analysis for high dams[J]Earthquake Engineeringand Engineering Vibration,2005,25(1):155～158.(in Chinese)
[3]潘家铮.建筑物的抗滑稳定和滑坡分析[M],北京:水利出版社,1980.PAN Jiazheng.Building sliding stability and landslide analysis[M],Beijing:Water Conservancy Press,1980.(in Chinese)
[4]任兴伟,唐益群,代云霞,方瑜.滑坡初始涌浪高度计算方法的改进及其应用[J].水利学报,2009,40(9):1116～1119.REN Xingwei,TANG Yiqun,DAI Yunxia,FANG Yu.Improved method for calculating landslide initial surge height[J].Journal ofHydraulic Engineering,2009,40(9):1116～1119.(in Chinese)
[5]汪洋,殷坤龙.水库库岸滑坡涌浪的传播与爬高研究[J].岩土力学,2005,29(4):1031～1034.WANG Yang,YIN Kunlong.Research on propagate and climb height of surge triggered by landslide in reservoir[J].Rock and SoilMechanics,2005,29(4):1031～1034.(in Chinese)
[6]JTJ213-98.海港水文规范[S].JTJ213-98.Harbor hydrological standard[S].(in Chinese)
[7]DL5073-2000.水工建筑物抗震设计规范[S].DL5073-2000.Code for seismic design of Hydraulic structures[S].(in Chinese)
[8]JIA Chao,GAO Feng,Li Yong.Progressive Failure Research on Foundation Surface of Concrete Gravity Dam[J].Advanced MaterialsResearch.2010,(163～167):1038～1043.
[9]林继镛.水工建筑物[M].北京:中国水利水电出版社,2006.LIN Jiyong.Hydraulic structures[M].Beijing:China Waterpower Press,2006.(in Chinese)
[10]SL319-2005.混凝土重力坝设计规范[S].SL319-2005.Concrete gravity dam design standard[S].(in Chinese)
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