滇池福保湾吹填修复区水下地形的演变研究  

Underwater Landform Evolution of Filling Restoration Area in Fubao Bay of Dianchi Lake

作　　者：李英杰[1,2,3] 胡小贞[2] 程三友[4] 胡社荣[3] 沈炳岗 赵斌[2] 

机构地区：[1]陕西省环境科学研究院,陕西西安710061 [2]中国环境科学研究院湖泊生态环境创新基地,北京100012 [3]中国矿业大学<北京>地球科学与测绘工程学院,北京100083 [4]长安大学地球科学与资源学院,陕西西安710054

出　　处：《中国给水排水》2012年第3期52-56,共5页China Water & Wastewater

基　　金：国家高技术研究发展计划(863)项目(2009ZX07212-002;2005AA6010100502;2006AA06Z343);长安大学校科技发展基金资助项目(07Z1503051001)

摘　　要：针对不利于水生植被恢复的因素,采用清洁底泥吹填技术修复福保湾直立沿岸带基底。为了研究吹填修复区水下地形的演变过程及机制,利用实地测得的7次湖底高程数据在Surfer软件环境中对工程区不同时期的水下地形进行了模拟分析,同时对吹填湖泥的沉降过程进行了室内模拟。结果表明:①清洁底泥吹填工程实施后,直立沿岸带基底得到了有效修复;②吹填后新形成的湖底地貌不断发生变化,湖底地形趋变平缓,逐渐稳定,但在工程区边界带发育了宽约2 m的冲沟;③吹填后由于水深变浅,湖底表面富含细沙颗粒沉积物,结果工程区内浪成沙波发育;④吹填后修复区地形的演变是吹填底泥在重力作用下的脱水压实和湖湾风浪淘蚀之共同作用的结果。The filling technology of clean sediment was used to restore the littoral belt of Fubao Bay, which was not beneficial to restoration of aquatic plants. In order to research the evolution and mechanism of underwater landform in the restoration area, the underwater landform at different stages was analyzed using elevation data measured seven times and Surfer software, and the settling process of filled sediment was simulated. The results showed that： ① After filling, the substrate condition of littoral belt was improved effectively. ② The newly formed landform by filling changed continuously, became fiat and stable gradually, and a gully of 2 m was developed near the boundary. ③ Fine silt sediment was accumulated on the surface of lake bottom due to the decrease of water depth, which resulted in sand ripple development. ④ The landform evolution of filling and compaction under gravity and wave erosion. tlon restoration area was the results of sediment dehydration Key words： Dianchi Lake; substrate restoration; filling of clean sediment; landform evolu velopment. ④ The landform evolution of filling restoration area was the results of sediment dehydration and compaction under gravity and wave erosion.

关 键 词：滇池 基底修复 清洁底泥吹填 地形演变 

分 类 号：X524[环境科学与工程—环境工程]