In order to evaluate the stability of surrounding rock scientifically and reasonably, a model for evaluation of underground engineering surrounding rock stability based on D-S evidence theory and error-eliminating theory was proposed. Firstly, aiming at the fuzziness and complexity of index weight in the evaluation of surrounding rock stability, four groups of index weight were obtained by using four kinds of weighting methods and synthesized by D-S evidence theory to avoid the difference of single weighting method in calculating index weight. Then, 16 groups of measured rock mass data of the first-stage underground project in Guangzhou pumped storage power plant were taken as samples, and a model for the surrounding rock stability evaluation based on D-S evidence and error-eliminating was constructed. Finally, the established model was applied to the evaluation of the surrounding rock stability of the second-stage underground project of the power plant, and the evaluation results were consistent with those of the other four evaluation models. The results show that D-S evidence theory improves the weighting method, and error-eliminating theory optimizes the defect of setting upper and lower limit values in standard of surrounding rock evaluation. The evaluation results of the established model are accurate and reliable. It provides a new method for the evaluation of underground engineering surrounding rock stability and has certain guiding significance in engineering practice.

为了科学合理地评价围岩的稳定性，提出了一种基于DS证据理论和误差消除理论的地下工程围岩稳定性评价模型。首先，针对围岩稳定性评价中指标权重的模糊性和复杂性，采用四种加权方法得到了四组指标权重，并通过DS证据理论进行综合，避免了单一权重法在计算指标上的差异。重量。然后，以广州抽水蓄能电站一期地下工程的16组实测岩体数据为样本，建立了基于DS证据和误差消除的围岩稳定性评价模型。最后，将建立的模型应用于电厂二期地下工程围岩稳定性评价，评价结果与其他四种评价模型相吻合。结果表明，DS证据理论改进了加权方法，误差消除理论优化了围岩评价标准中设定上下限值的缺陷。建立的模型的评估结果准确可靠。为地下工程围岩稳定性评价提供了一种新方法，对工程实践具有一定的指导意义。评估结果与其他四个评估模型的结果一致。结果表明，DS证据理论改进了加权方法，误差消除理论优化了围岩评价标准中设定上下限值的缺陷。建立的模型的评估结果准确可靠。为地下工程围岩稳定性评价提供了一种新方法，对工程实践具有一定的指导意义。评估结果与其他四个评估模型的结果一致。结果表明，DS证据理论改进了加权方法，误差消除理论优化了围岩评价标准中设定上下限值的缺陷。建立的模型的评估结果准确可靠。为地下工程围岩稳定性评价提供了一种新方法，对工程实践具有一定的指导意义。