摘要
考虑影响冲击地压的矿山地质因素和开采技术因素,提出预测预报冲击地压危险性的距离判别分析方法。选用煤层开采深度、顶板岩性、地质构造复杂程度、煤层倾角、煤层厚度、开采方法、有无煤柱、炮采或综采8项指标作为距离判别分析模型的输入变量,并以工程实测数据作为学习样本进行训练,建立相应判别函数对待判样本进行预测。研究结果表明,距离判别分析模型学习性能良好,预测精度高,回判估计的误判率为零,是冲击地压预测预报的一种有效而实用的方法。
A new method to predict rock burst is presented by considering the effect of mining techniques and geological conditions on rock burst. Eight indexes including uniaxial compressive strength, p-wave velocity in rock, volumetric joint count, joint roughness coefficients, joint weathering coefficients and permeability coefficient are selected as the input variables, and thus a distance discriminant analysis model is established. The discriminant functions of this model are obtained by training a large set of study samples, and then applied to engineering. The results show that this model has an excellent performance, high prediction accuracy and can be used in practical engineering.
出处
《中国安全科学学报》
CAS
CSCD
2008年第3期41-45,共5页
China Safety Science Journal
基金
湖南省自然科学基金资助(06JJ2094)
湖南省教育厅基金资助(06C320)
关键词
冲击地压
预测预报
距离判别分析
煤矿
灾害
rock burst
prediction
distance discriminant analysis
coal mine
disasters
