摘要
煤层具有冲击倾向性是煤层发生冲击地压的必要条件,煤的冲击倾向研究是冲击地压机理研究的组成部分,是冲击地压预测预报的前提。本文首次提出以每个试验值为元素,统计落在每个冲击倾向等级内的频度,然后从煤的动态破坏时间、弹性能量指数和冲击能量指数三个不同侧面综合评判煤的冲击倾向方法,较好地解决了煤试样数量少,试验结果离散度较大所带来的问题,提高了评判结果的精确性和可靠性,具有实用意义。
The frequency distribution diagrams of rock burst are plotted by means of three-phase fuzzy statistical method in the paper. Thereby a subordinative function ofrock burst is established to reflect objictively the grade ofrock burst liability as 'serious', 'medium' and 'none',three fuzzy concepts. A method is put forward for thefirst time that sums up the frequency in each grade ofrock burst liability by regarding each experimental valueas a element, and then judges comprehensively theliability from three aspects: the dynamic failure time, theelastic energy index and impact energy index of coal.This method may solve the problem of the discretion ofexperiment results with only a few specimens andimprove the accuracy and reliability of judgement.Consequently it has a practical value.
出处
《矿山压力与顶板管理》
1992年第1期75-79,104,共5页
Ground Pressure and Strata Control
