The perforation performance is an important index of oil - layer casing representing the resistance to initial brittle crack growth.
射孔性能是油层套管很重要的一项指标，它代表着油层套管抵抗裂纹脆性扩展的能力。
2
The coefficient of brittle stress drop is correlative with the index of rockburst trend in an opposite way, so it can be used to evaluate the rockburst trend.
应力脆性跌落系数与岩爆倾向性指标呈显著反相关关系，可用来作为评价岩爆倾向性的指标之一。
3
The result of this work is important for to choose the strength index of brittle materials and to control the quality.