气候变化领域集成服务门户(CCPortal): Dilemma of a small dam with large basin area under climate change condition

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DOI	10.12989/cac.2024.33.5.559
	Dilemma of a small dam with large basin area under climate change condition
	Ma, Jeong-Hyeok; Yoo, Chulsang; Yun, Tae-Sup; Jung, Dongwhi
发表日期	2024
ISSN	1598-8198
EISSN	1598-818X
起始页码	33
结束页码	5
卷号	33 期号:5
英文摘要	Problems of under-sized dams (small dams with large basin area) could get worse under the global warming condition. This study evaluates the possible change of these problems with the Namgang Dam, an under-sized dam in Korea. For this purpose, first, this study simulates the dam inflow data using a rainfall-runoff model, which are then used as input for the reservoir operation. As a result, daily dam storage, dam release, and dam water supply are derived and compared for both past observed period (1973 similar to 2022) and future simulated period (2006 similar to 2099) based on the global warming scenarios. Summarizing the results are as follows. First, the inflow rate in the future is expected to be increased significantly. The maximum inflow could be twice of that observed in the past. As a result, it is also expected that the frequency of the water level reaching the high level is increasing. Also, the amount and frequency of dam release are to be increased in the future period. More seriously, this increase is expected to be concentrated on rather extreme cases with large dam release volume. Simply, the condition for flood protection in the downstream of the Namgang Dam is becoming worse and worse. Ironically, the severity of water shortage problem is also expected to become much worse. As the most extreme case, the frequency of no water supply was zero in the observed period, but in the future period, it becomes once every five years. Both the maximum consecutive shortage days and the total shortage volume are expected to become more than twice in the future period. To prevent or mitigate this coming problem of an under-sized dam, the only countermeasure at this moment seems to be its redevelopment. Simply a bigger dam with larger dam reservoir can handle this adverse effect more easily.
英文关键词	climate change; flood control; global warming; under-sized dam; water supply
语种	英语
WOS研究方向	Computer Science ; Construction & Building Technology ; Engineering ; Materials Science
WOS类目	Computer Science, Interdisciplinary Applications ; Construction & Building Technology ; Engineering, Civil ; Materials Science, Characterization & Testing
WOS记录号	WOS:001222804900008
来源期刊	COMPUTERS AND CONCRETE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/290385
作者单位	Korea University; Yonsei University
推荐引用方式 GB/T 7714	Ma, Jeong-Hyeok,Yoo, Chulsang,Yun, Tae-Sup,et al. Dilemma of a small dam with large basin area under climate change condition[J],2024,33(5).
APA	Ma, Jeong-Hyeok,Yoo, Chulsang,Yun, Tae-Sup,&Jung, Dongwhi.(2024).Dilemma of a small dam with large basin area under climate change condition.COMPUTERS AND CONCRETE,33(5).
MLA	Ma, Jeong-Hyeok,et al."Dilemma of a small dam with large basin area under climate change condition".COMPUTERS AND CONCRETE 33.5(2024).