基于粗糙集和改进功效系数法的岩体质量评价

Rock mass quality evaluation based on rough set and improved efficacy coefficient method

将改进的功效系数法应用于地下工程岩体质量评价中,选取岩石质量指标、岩体完整性系数、结构面强度系数、岩石单轴饱和抗压强度和地下水渗水量作为主要评价指标,对30组现场典型数据样本进行学习.运用粗糙集理论确定各指标的权重,建立地下工程岩体质量评价的粗糙集和改进功效系数法模型,并应用到实际工程岩体质量评价中.结果表明：建立的粗糙集和改进功效系数法模型原理简单,对岩体质量分级的准确率为90%.将该模型应用到广东抽水蓄能电站地下工程岩体质量分级,评价结果与实际情况符合较好.

An improved efficacy coefficient method was used to classify the rock mass quality evaluation in underground engineering.Five indexes,i.e.,rock quality index,rock mass integrity coefficient,the intensity of structural plane coefficient,saturated uniaxial compressive strength of rock,and seepage measurement of groundwater were selected as the main evaluation indexes.By selecting 30 samples of typical data and using the rough set theory to determine the weight of each index,the rough set and improved efficacy coefficient method model was established to evaluate the rock mass quality evaluation in underground engineering,which was also applied to practical engineering rock mass quality results show that the established principles of the improved efficacy coefficient method is simple,and the established rough set and improved efficacy coefficient method model for evaluation the rock mass quality evaluation classification has the accuracy of 90%.The model was applied to the Guangdong pumped storage power station＇s rock mass quality evaluation classification in underground engineering,and the results are in good agreement with actual situation.