在总结以往岩体质量分类经验基础上 ,突出岩体的结构特征分析与研究 ,阐明了岩体质量评价的理论方法、指标体系 ,结合实例建立了一种简洁、实用的岩体质量评价体系。在这一系统中 ,突出了岩体结构面网络模拟分析在评价中对确定RQD值的重要性 ,解决了RQD值的定量分析。通过工程实践说明这一评价体系对工程建设具有重要指导意义。 On the basis of summarizing the experience of rock mass classification in the past, the structural characteristics of rock mass are analyzed and studied. The theoretical method and index system of rock mass quality assessment are expounded. A concise and practical rock mass quality evaluation system is established with examples. In this system, the importance of network simulation analysis of rock mass structural plane network in determining RQD value is emphasized, and the quantitative analysis of RQD value is solved. Through the engineering practice shows that this evaluation system has an important guiding significance for the construction.