钉螺随侧堰分流扩散规律的研究  

Research on Diffusion Law of Oncomelanias along Side-weir Flow

作　　者：刘艾明[1] 徐海涛[2] 

机构地区：[1]武汉理工大学交通学院,武汉430063 [2]长江科学院河流研究所,武汉430010

出　　处：《长江科学院院报》2010年第4期1-4,10,共5页Journal of Changjiang River Scientific Research Institute

基　　金：水利部江湖治理与防洪重点实验室开放研究基金(R2007-05);武汉理工大学校青年基金(xjj2007051)

摘　　要：因行洪、引水使钉螺由垸外向垸内扩散是血吸虫病蔓延的一个重要原因,研究钉螺随水流扩散规律对控制血吸虫病的流行极为重要。首先采用模型试验和数值模拟的方法研究了侧堰分流的流场特性,在此基础上进行了钉螺随侧堰分流扩散规律的实验研究。结果表明钉螺随水流扩散后并不是均匀分布在流场内,而是集中分布在侧堰附近上下游以及回流区域。这一结论为安全有效地灭螺提供了重要的理论依据。The diffusion of oncomelanias by flood is a main reason of schistosomiasis propagation. Therefore it is the most essential and effective way to control diffusion of oncomelanias along with flood for preventing epidemic of schistosomiasis disease. In this paper the research on the diffusion of oncomelanias along side-weir flow is carried out. The result shows that after diffusion along side-weir flow, oneomelanias do not evenly distribute at floodplain areas, but fall in the place that flow velocity is small , i.e. in the backflow areas and at boundary places of upper reaches and lower reaches of the side-weir breach. Oncomelania＇s diffusion law provides an important theory for eliminating oncomelanias.

关 键 词：钉螺 侧堰 血吸虫 

分 类 号：R184[医药卫生—流行病学]