抓斗式疏浚设备对底泥污染物释放规律的研究  

RESEARCH ON THE EFFECTS OF GRAB DREDGING EQUIPMENT ON SEDIMENT POLLUTANT RELEASE REGULARITY

作　　者：雷晓玲[1,2] 彭小兰[2] 黄媛媛 杨白露[2] 

机构地区：[1]重庆市科学技术研究院,重庆401123 [2]重庆交通大学河海学院,重庆400074

出　　处：《环境工程》2015年第4期97-99,13,共4页Environmental Engineering

基　　金：国家科技支撑计划项目"三峡水库常年回水区航运工程建设关键技术研究"(2011BAB09B00);重庆市科委科技平台与基地建设项目(国际科技合作基地建设)"中-加三峡水域国际科技合作示范基地"(cstc2013gjhz20001)

摘　　要：抓斗式疏浚设备如何进行效率高、底泥污染物释放少的疏浚是环保疏浚面临的难题。根据环保疏浚的要求和三峡库区常年回水区的具体情况,要解决库区淤积和一般疏浚工程带来的二次污染问题,必须从减少扰动,防止泥沙悬浮等方面寻求最优参数。采用传统的抓斗式疏浚设备通过抓斗开度、飘斗角、抓泥频率等参数的控制模拟三峡库区常年回水区底泥疏浚,以寻找底泥污染物释放量最小的参数组合。建议三峡库区常年回水区疏浚以试验最优参数组合为基础,结合实际通航要求进行工程疏浚。High efficiency of grab dredging equipment and less sediment pollutant release is the key problem of enviormental protection dredging. Based on the requirment of enviormental protection dredging and the specific situation of the invariable backwater zone of the Three Gorges reservoir area,the optional parameters from reducing disturbance and preventing the sediment suspension should be sought to solve the problem of reservoir sedimentation and the second pollution. The author simulate sediment dredging in the invariable backwater zone of the three gorges reservoir area through the traditional grab gredging equipment parameters control such as grab bucket opening,floating bucket angle,frequency of grabing mud. This method could find the optimal parameter combination of minimum sediment pollutant release. The experiment provided the optimal parameter support for the sediment dredging in the Three Gorges reservoir area,combined with the actual requirement of navigation.

关 键 词：抓斗式疏浚 抓斗开度 抓斗频率 飘斗角 污染物 

分 类 号：X52[环境科学与工程—环境工程]