基于突变级数法的岩体质量评价

Rock Mass Quality Assessment Based on Catastrophe Progression Method

为了改进以往岩体质量评价时难以准确确定指标权重的缺陷,提出将突变级数法应用于岩体质量评价。依据突变级数理论,选择岩体钻进速度、岩体声波速度、结构面间距、结构面摩擦系数、岩石单轴抗压强度等岩石质量指标为影响因素构建岩体质量评价的递阶层次结构模型;同时根据各影响因素对应的分类依据采用随机插值法构建学习样本,对学习样本数据预处理之后进行突变级数值计算;再次依据学习样本的突变级数值与实际经验等级值构建岩体质量评价的突变级数判据。最后应用检测样本对所构建的岩体质量突变级数评价模型进行验证。研究结构表明,突变级数法高效适用于岩体质量评价,具有良好的应用前景。

To avoid the defect of hard to accurate determination of index weight in previous rock mass quality assessment, put forward to use the catastrophe progression method in the assessment. Based on the catastrophe progression theory, has selected rock quality indi- ces of rock mass penetration rate, rock mass acoustic velocity, structural face interval, structural face friction coefficient and uniaxial compressive strength as factors impacting rock mass quality assessment hierarchical structure modeling. Simultaneously, according to each factor corresponding classification basis to use random interpolation build training samples carried out catastrophe progression value computation after training sample data preprocessing; again based on training sample catastrophe progression value and actual experi- ence grade value to build rock mass quality assessment catastrophe progression criterion. Finally, based on detection samples carried out verification for rock mass quality catastrophe progression assessment model. The studied result has shown that the catastrophe pro- gression method can be efficiently used in rock mass quality assessment with good application prospect.