发展了一种新的用于模拟胶体运动的ＭｏｎｔｅＣａｒｌｏ方法，综合ｃｌｕｓｔｅｒｍｏｖｉｎｇ技术、粒子簇生长以及粒子沉降模拟方法于一个统一的模型中，首先对胶体体系中粒子的聚集行为进行模拟，在此基础上引入重力因素，考察中间体系的聚沉行为，并进一步扩展到水煤浆粗分散体系，分别从粒子簇、粒径以及粒子密度３个方面考察了超声辐照对水煤浆体系稳定性的影响规律，初步阐明了这些因素影响水煤浆稳定性的内在原因。 A new Monte Carlo method for simulating colloid motion was developed. Based on clustermoving, particle cluster growth and particle subsidence simulation in a unified model, the particle aggregation behavior in colloidal system was simulated firstly. On the basis of this, The influence of ultrasonic radiation on the stability of coal-water slurry system was investigated from three aspects of particle cluster, particle size and particle density by introducing the gravity factor, investigating the co-precipitation behavior of the intermediate system and further extending to the CWS coarse dispersion system Law, initially clarified the inherent reason that these factors affect the stability of CWS.