And then the author established and verified an empirical equation for the ratio of the heights of collapsed part and running part for the avalanche soils , suggested the critical flow conditions of loose avalanche soils and block avalanche soils , discussed the causes of accelerated motion of consistent debris flows on mild slope , and studied the average velocity of intermittent debris flows 给出了判别崩塌土相对运动距离,即流高比公式,并用现场实测资料进行了验证。提出了松散崩塌土和块状崩塌土流动化的判别条件。探讨了稠性泥石流在缓坡上加速运动的成因,并讨论了阵性泥石流平均流速公式。