摘要
为能够准确预测岩爆等级,从岩性、应力、围岩三方面选取岩爆发生的五个因素作为预测评价指标,通过改进后的熵权公式来计算评价指标的重要程度;结合突变级数法中多维的印第安人茅舍模型对无量纲处理后的岩爆样本数据进行归一化计算得到突变级数值,并划分岩爆等级区间。最后将此方法应用在江边水电站隧道岩爆预测中。结果表明:利用该方法评判岩爆等级,模型维数较多,评判结果客观、准确,和实际工程情况一致,与其他方面相比具有一定优势。
In order to accurately predict the rock burst level,five factors of rock burst occurrence were selected from three aspects of lithology,stress,and surrounding rock as the prediction evaluation index,and the importance of evaluation index was calculated by using the improved entropy weight formula.Combined with the multi-dimensional Indian huts model in the catastrophe progression method,the data of rock burst samples after dimensionless processing were normalized to obtain the catastrophe sequence value,and the rock burst interval was divided.Finally,this method is applied to the rock burst prediction of Jiangbian hydropower station tunnel.The results show that the method is objective,accurate,and consistent with the actual engineering situation and has certain advantages over other aspects.
作者
郭延华
李乐昱
GUO Yanhua;LI Leyu(College of Civil Engineering,HeBei University of Engineering,HanDan 056038,China)
出处
《河北工程大学学报（自然科学版）》
CAS
2019年第3期67-71,共5页
Journal of Hebei University of Engineering:Natural Science Edition
基金
河北省自然科学基金资助项目(E2014402099)
关键词
改进熵权法
突变级数法
印第安人茅舍模型
岩爆等级
预测
improved entropy method
catastrophe progression method
the Indians huts model
level of rock burst
prediction
