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目的:探讨阻螺工程设计原理,以供水利血防工作者在血吸虫病预防控制工作中参考。方法:根据钉螺的生态学和钉螺的水力生物学特性,运用三格式中层取水涵阻螺方式进行现场实验。结果:对血吸虫病湖沼水网型流行区域于2004至2011年在现场利用三格式中层过水阻螺池设计原理建设的12座阻螺池进行3现场调查,其设计最小水流量0.5m/s,最大水流量3.5m/s,经现场效果观察,其阻螺效果达100%,与国内有关报导基本一致。结论:在血吸虫病流行的渠网水系科学设置阻螺设施,可有效控制钉螺随水流扩散。3
OBJECTIVE: To explore the design principle of snail-proofing project for reference of prevention and control of schistosomiasis by water-conservancy and blood-protection workers. Methods: Based on the ecology of snail and the hydrobiological characteristics of snail, a three-format middle-layer water-holding snail was used to carry out field experiments. Results: A total of 12 snail ponds constructed by the design principle of the three middle-level over-water snail pool were used in the on-site investigation of schistosomiasis lakes and marshes in 2004 and 2011 respectively. The designed minimum water flow rate was 0.5m / s , The maximum water flow of 3.5m / s, the effect observed on the spot, the snail effect of 100%, basically consistent with the domestic reports. Conclusion: The snorkeling facilities are set up scientifically in the drainage system of schistosomiasis, which can effectively control snail with the spread of water flow. 3