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从突变理论及自组织临界性理论，对三峡大江截流戗堤坍塌机理进行研究。认为在三峡大江截流特定的水流条件下，可以形成临界坡度和稳定坡度两种坡度。抛投体堆积达到临界坡度时，发生坍塌，是一种自然规律。在水流中，堆积体是否坍塌主要取决于堆积体粒径与水流流速的相对关系，坍塌的规模取决于堆积体的高度。据此以研究解决坍塌问题的对策措施。
From the catastrophe theory and the theory of self-organized criticality, the collapse mechanism of the embankment of the Three Gorges rivers is studied. It is considered that under the specific water flow conditions of the Three Gorges River closure, two grades of critical grade and stable grade can be formed. It is a natural law to throw a body to collapse when it reaches a critical slope. Whether or not the deposit collapses in the water flow depends mainly on the relative relationship between the particle size of the deposit and the flow rate of the water flow. The scale of the collapse depends on the height of the deposit. Based on this, we should study countermeasures to solve the problem of collapse.