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用面流衔接型式结合冲坑处理拦河坝下水面的衔接是拦河坝改造的一个新课题，通过实践，具有节省工程量的优越性。
It is a new topic for barrage to reconstruct the connection of barricades with the cacao type and punching pit to deal with the water surface of barrage. Through practice, it has the advantage of saving the project quantity.