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８０年代以来，防止水工建筑物扩散钉螺的研究取得新的进展。采用沉螺池加拦网工程和中层取水工程对防止灌溉闸扩散钉螺方面已取得实测资料，证明工程效果较好。三峡工程修建后，钉螺是否可能扩散到库区呢？对钉螺在船体上的吸附能力进行研究之后，认为向库区扩散的可能性很小。提出的防止船闸扩散钉螺的几种措施，有待工程实践完善。水库建成后，下游河道环境将发生变化，这些变化有利于控制钉螺的孳生扩散。
Since the 1980s, new progress has been made in the prevention of the proliferation of snail in hydraulic structures. The use of sinking pool plus blocking block project and the middle take water project to prevent the proliferation of irrigation gate snail has obtained measured data to prove that the project works better. After the construction of the Three Gorges Project, snail is likely to spread to the reservoir area? After studying the adsorption capacity of snail on the hull, it is considered that it is unlikely to spread to the reservoir area. Proposed measures to prevent the proliferation of snail ship lock, to be perfect engineering practice. After the completion of the reservoir, the environment of the lower reaches of the river will change, and these changes will help control the spread of snails.