Through theoretic analysis and flume experiments, the characteristic of water resistance through permeable frame groups under lower submergedflow is researched.
In free flow pattern and submergedflow pattern, as long as flow movement meet the dynamic similar criterion can reach the similarity of spillway tunnel flow pattern;
在自由流和淹没流时，只要水流运动满足动力相似准则就可达到泄洪洞水流流态的相似；
3
The equation for describing the movement of debris flow head in submergedflow pattern is established and the method for determining the corresponding parameters is proposed.