铁道科学与工程学报2018，Vol.15Issue(1)：45-51,7.
基于模糊概率理论岩质围岩基本分级细化研究
Rocky surrounding sub-classification based on fuzzy mathematics and probability method
摘要
Abstract
In this paper,the basic classification method of rock mass based on the qualitative discrimination,BQ, core state and elastic longitudinal compressional velocity of surrounding rocks is developed. And the fuzzy probability theory is introduced into the classification of surrounding rocks. Taking the rock mass of Qingdao subway as the research object, the following results are obtained: The Grade Ⅲ and Ⅳ rocks were divided into sub-grades, and the grades of surrounding rock were increased from five to seven, which reduced the mass span between rock masses. It also gives the physical and mechanical parameters of surrounding rock at all levels .On the basis of qualitative identification, the correspondence between BQ, core state, elastic compressional wave velocity of surrounding rock and grade of surrounding rock is obtained. Then the basic classification method of rock mass is established. The discrimination accuracy of surrounding rock classification method and the subordinate function of surrounding rock grade and each grade index are obtained. Based on the fuzzy probability theory, the fuzzy comprehensive evaluation method of surrounding rock classification is established. Through on-site application, it verified that this method reduces the subjective factors in the classification of surrounding rock, improves the accuracy of surrounding rock classification and enriches the grading system of surrounding rock.关键词
岩质围岩/基本分级细化/BQ/弹性纵波速度/岩芯状态/模糊概率理论Key words
surrounding rock/rocky surrounding sub-classification/BQ/velocity wave of rock/condition of core/fuzzy mathematics and probability分类
交通工程引用本文复制引用
吴圣智,王明年,刘大刚..基于模糊概率理论岩质围岩基本分级细化研究[J].铁道科学与工程学报,2018,15(1):45-51,7.基金项目
国家自然科学基金资助项目(51208434) （51208434）
