通过粗沙高含沙异重流的水槽试验研究，并与巴家咀等水库实测资料及细沙高含沙异重流水槽试验资料对比分析，得出：（１）在考虑了高含沙水流的本质特性后，粗沙高含沙异重流的形成条件、阻力特性、输沙特性等基本规律与低含沙异重流相同，（２）由于粗沙高含沙异重流中粘土含量小，形不成絮网结构，因此难以形成像巴家咀水库那样的伪一相异重流，它一般是两相流． Through the experimental study of the heavy sand and heavy current sinks, and compared with the experimental data of Bajiazui and other reservoirs and the experimental data of the high sand and heavy sediment sinks, we can draw: (1) After the essential characteristics of the water flow, the basic rules of formation conditions, resistance characteristics and sediment transport characteristics of heavy sediment with high sediment concentration are the same as those of low sediment concentration. (2) It is difficult to form a pseudo-one-heavy flow like that of the Bajiazui Reservoir. It is generally a two-phase flow.