应用属性数学理论的采空区地基稳定性评价

Assessment of goaf foundation stability based on attribute mathematical theory

基于属性数学理论,本文提出了评价采空区地基稳定性的属性识别模型。以采煤工作面终采时间、沉降趋势、深厚比、构造复杂程度、上覆岩层强度、相对位置、"活化"因素等作为评价指标,将采空区稳定性等级划分为4个级别,以属性数学理论建立各评价指标的属性测度函数,以该函数计算单指标属性测度值和样本综合属性测度值,最后以置信度准则进行评判。研究表明,该模型对采空区稳定性的预测评价结果正确,对工程建设实践具有指导意义。

According to attribute mathematical theory, attribute recognition model for assessing the stability of goat foundation was proposed in this paper. Seven parameters including the end-mining time of coalfaee, subsidence tendency, depth/thickness ratio, complexity of geologic structure, strength of overlying strata, relative position, and activation factor were selected as the indexes and the goal foundation stability conditions were divided into four grades. Attribute measurement diagrams were rigorously constructed to compute attribute measurement of single index were synthetic attribute measurement, the stability classification of goal foundation sam- pies are recognized by the confidence criterion. An exemplification study showed that the synthetic assessment results agree well with the practical.