摘要
针对岩体质量具有随机性和模糊性的特点,将云模型引入到岩体质量评价中。首先,通过分析岩体质量的影响因素,建立了岩体质量综合评价模型,通过对各评价指标进行分级,确定云的数字特征,在此基础上生成单指标云图,并确定单指标确定度;然后,采用变权重理论确定指标权值,通过计算综合确定度判断岩体的质量等级;最后,将变权重-云理论综合评价模型应用于焦家金矿采场岩体质量评价中。研究表明:该矿山岩体质量等级主要为Ⅲ和Ⅳ级,预测结果与实际情况相符合,且与改进RMR法的评价结果一致,说明采用变权重云模型方法进行地下采矿工程岩体质量评价具有可行性。
Because of the quality of rock mass has the characteristics of randomness and fuzziness, the cloud model is introduced into the rock mass quality evaluation. Firstly, by analyzing the factors affect- ing the mass of rock mass,the comprehensive evaluation model of rock mass based on cloud model is es- tablished, the cloud figures and cloud chart are calculated according to the grade division standard, and the index determination can be confirmed;then,the variable weight theory （VWT） is used to determine the index weight, and the evaluation grade is determined by calculating the comprehensive degree of cer- tainty;finally, the comprehensive evaluation model is applied to the rock mass quality classification of Jiaojia Gold Mine. The study results show that the rock mass of the mine is mainly for IlI and IV. The prediction results is consistent with with the actual situation and the evaluation results of improved RMR method, which indicated that the method proposed in this paper is suitable for the evaluation of rock mass quality of underground mining engineering.
作者
郑相悦
Zheng Xiangyue(Guangdong Metallurgical Architecture Design Institut)
出处
《现代矿业》
CAS
2018年第7期88-90,95,共4页
Modern Mining
