基于主成分分析的冲击地压影响因素研究

A principal component analysis based study on the effect factors of pressure bump

以某矿井21141工作面发生的2次冲击地压灾害为实例,运用主成分分析法评价了各因素对冲击地压灾害的作用程度,并确定了开采深度、煤层厚度、煤层倾角、顶板岩性、地质构造和煤岩强度等是工作面冲击的主要影响因素。评价结果与采掘现场记录基本一致,可靠性高,为确定工作面冲击地压发生机理和针对性地防治冲击地压灾害提供了定量依据。

Based on the two pressure bump disasters that occurred in #21141 face of a certain coal mine,the degree of effect of various factors on rock burst is evaluated by using principal component analysis and it is also determined that the following are the major factors affecting the pressure bump at faces such as the mining depth,coal seam thickness,coal seam dip angle,nature of roof rock,geological structure and strength of coal and rock,etc.The analytical assessment results are basically consistent with the record kept at mining site at high reliability,which provides a quantitative basis for determining the mechanism of rock bursts at face and preventing rock burst disasters with appropriate measures.