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工程科学与技术:2009,41(3):26-34
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地震背景下的川江流域泥沙与河床演变问题研究进展
(四川大学 水力学与山区河流开发保护国家重点实验室,四川 成都 610065)
Advances in Studies of River Sediment and Fluvial Processes of   the Upper-Yangtze River in Earthquake Background
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中文摘要: 川江流域历史地震是影响川江流域沙量与河床演变的主要动力因素之一。“5·12”汶川大地震将进一步增加地震区流域的水土流失,改变川江流域的河流泥沙运动和河床演变趋势。汶川地震是龙门山断裂带有历史文献记录以来发生的最大地震灾害。地震诱发了大量的崩塌、滑坡、泥石流、堰塞湖等次生地质灾害,在地表富集了大规模的松散堆积体。地震严重损坏了近20年来建设的水土保持设施,加剧了水土流失,较大地改变了流域坡面侵蚀条件和河流泥沙来源。综述了若干关键科学技术问题,包括地震与流域产沙,川江流域的泥沙量,地震与川江水系河床演变,地震次生灾害后的河流修复。并建议加强水利工程科学、地质科学和环境生态科学的交叉融合,开展震区河流灾后修复理论和关键技术的研究。
Abstract:Historical earthquakes were one of main dynamic factors for river sediment yield in Chuanjiang catchment,and Wenchuan earthquake in 2008 will further affect its soil erosion, and the trend of river sediment and fluvial processes.Wenchuan earthquake is the largest earthquake in Longmen Mountain area as recorded in the historic documents. The earthquake has changed erosion condition and resources of sediment owing to abundant incompact mass induced dilapidations, landslips, debris flows and barrier lakes. The earthquake has damaged erosion control instructures developed in recent 20 years, and cause more serious erosion. Advances of relative science and technology studies were summarized,which included the relationships between earthquake and catchment sediment yield;sediment amount of rivers in earthquake area;Effects of earthquake to fluvial processes of Chuanjiang water system; River restoration techniques to secondary disasters of earthquakes. It was suggested that further studies are especially required, including strengthen inter disciplines studies in areas of hydraulic engineering, geo science, and ecologic and environmental science to explore theory and key techniques of river restoration after earthquake secondary disasters.
文章编号:20090303     中图分类号:    文献标志码:
基金项目:国家自然科学基金重点项目(50739002);国家973计划资助项目(2008CB425803)
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曹叔尤,刘兴年,黄尔.地震背景下的川江流域泥沙与河床演变问题研究进展[J].工程科学与技术,2009,41(3):26-34.
.Advances in Studies of River Sediment and Fluvial Processes of   the Upper-Yangtze River in Earthquake Background[J].Advanced Engineering Sciences,2009,41(3):26-34.