盲数理论在采空区地基稳定性评价中的应用

采空区地质条件错综复杂,针对其物理力学参数具有多种不确定性信息共存的特点,将盲数理论引入采空区地基稳定性评价领域;结合巷道顶板的受力平衡分析,建立了基于盲数理论的评价模型,并将该模型应用于某工程实例,定量地评价了采空区地基的稳定程度。分析结果表明:运用盲数运算法则可以计算地基稳定性在不同取值区间内的可信度,它弥补了传统确定性方法描述过于绝对化的问题,为采空区地基稳定性的判别提供了更全面的依据,并为相近领域工程问题的解决提供了新的方法和思路。

Application of Blind Number Theory in the Evaluation of Goaf Foundation Stability

In view of the complex geological conditions of the goaf and its physical and mechanical parameters characterized by the coexistence of various uncertain data, Blind Number Theory is introduced into the field of Goaf foundation stability evaluation. Through the analysis of equilibrium condition of tunnel roof pressure, an evaluation model is established and applied in an engineering example. A quantitative evaluation is conducted to determine the Goaf foundation stability. The result demonstrates the feasibility of blind number operation rule in determining the credibility of foundation stability in different value range. It makes up for the absoluteness of traditional deterministic method and provides newSmethods and ideasSfor solvingSengineering problemsSin similarSareas as well as a more comprehensive basis for the determining of the foundation stability.