岩层脆塑比在煤层断层成因分析中的应用

主要讨论在构造应力场相似条件下 ,煤层顶、底板岩体力学性质与煤层小断层之间的关系 .岩体力学性质的表述方法很多 ,岩层脆塑比是其中重要的表示方法之一 .在计算岩层脆塑比时 ,首先要计算并确定岩层的厚度范围 ,其次是计算脆性岩层和塑性岩层的厚度 .由于岩层岩性有一定的差别 ,因此 ,计算时不能简单的相加求和 ,应当通过强度调整系数换算后再进行计算 .该方法用于分析多煤层开采矿井或区域构造比较简单的矿井中煤层小断层的成因效果明显

The application of the ratio on brittle and tenacity terrane in the analysis of causes of fault formation

It has discussed the relation between rock_block mechanic character above and below coal bed which is similar in structure stress field and coal_bed small faults. The ratio on brittle and tenacity terrane is one of the express methods of rock_block mechanic character. When calculating the ratio on brittle and tenacity terrane, first, the thickness range of rock should be confirmed; secondly, the thinkness of brittle and tenacity terrane should be calculated. As a result of the difference of lithology, the numerical value by adjusting intensity coefficient needs calculating. This method is the best in the analysis of causes of small fault formation in multiply coal_bed mines or mines in which the area stucture is simple.