由石根华提出的非连续变形分析(DDA)方法理论严密且计算较为高效,在模拟块体滑移、转动和张开等大变形、大位移问题方面具备独特优势,因而在岩土工程领域得到了广泛运用。然而DDA方法在提出初期不可避免地存在一些精度问题,对此石根华及国内外学者就问题产生原因和改进方法开展了大量研究工作。基于部分相关成果的研究学习,对改进原始DDA计算精度的各类方法进行归纳探讨,主要包括:(1)DDA块体内部应力位移场的精度控制;(2)块体接触问题处理方法的改进;(3)人为参数的合理选取;(4)能量耗散机制的考虑;(5)人工边界的改进等方面。对以上方法的改进效果和计算效率进行了简要分析和讨论,在此基础上对DDA的研究热点和发展趋势进行了概述,为该方法的进一步发展和完善提供思路。 The discontinuous deformation analysis (DDA) method proposed by Shi Genhua is rigorous and computationally efficient. It has unique advantages in simulating large deformation and large displacement problems such as slippage, rotation and opening of the block, and thus obtained in the field of geotechnical engineering Widely used. However, the DDA method inevitably has some problems of accuracy in the early stage. Therefore, Shi Genhua and many scholars at home and abroad have carried out a large amount of research work on the causes and improvement methods of the problems. Based on the research of some related achievements, this paper summarizes the various methods to improve the accuracy of the original DDA calculation, including: (1) the accuracy control of the stress displacement field in the DDA block; (2) the improvement of the block contact problem processing method ; (3) Reasonable selection of human parameters; (4) Consideration of energy dissipation mechanism; (5) Improvement of artificial boundary and so on. This paper briefly analyzes and discusses the improvement and calculation efficiency of the above method. Based on this, the research hot spots and development trends of DDA are summarized, which provide ideas for the further development and improvement of this method.