金属矿崩落法扰动范围预测新方法及应用  

New method and application of disturbance range prediction for caving method of metal ore

作　　者：周科平[1] 李亮 林允[1] 熊信 杨念哥[1] 陈树林 Ke-ping ZHOU;Liang LI;Yun LIN;Xin XIONG;Nian-ge YANG;Shu-lin CHEN(School of Resources and Safety Engineering,Central South University,Changsha 410083,China;Panzhihua Iron Mine,Panzhihua Iron and Steel Mining Co.,Ltd.,Panzhihua 617025,China)

机构地区：[1]中南大学资源与安全工程学院,长沙410083 [2]攀钢矿业有限责任公司攀枝花铁矿,攀枝花617025

出　　处：《Transactions of Nonferrous Metals Society of China》2023年第3期889-901,共13页中国有色金属学报（英文版）

基　　金：the financial supports from the National Natural Science Foundation of China (No. 52104109);the National Key Research and Development Program of China (No. 2020YFC1909801)。

摘　　要：为量化金属矿崩落法扰动范围,提出一种基于岩石力学参数扰动范围的预测新方法。通过将岩石力学指标与随机介质理论相结合,建立扰动范围预计修正公式。基于扰动等效中心和扰动衰减球面,推导金属矿山开采扰动的二维安全判据。将该方法应用于6个矿山和尖山矿,并利用FLAC^(3D)模型对尖山矿进行数值模拟。经对比,预测值与实测值的后验差比值为0.0357,多因素交叉分析得到该方法对结果产生的相对误差仅为0.078。研究表明,该方法的预测精度高,且不会对安全性产生显著影响。To quantify the disturbance range of the metal ore caving method,a new method to predict the disturbance range based on rock mechanics parameters is proposed.By combining the rock mechanics index with random medium theory,the prediction correction formula of the disturbance range is established.Based on disturbance equivalent centre and disturbance attenuation sphere,the two-dimensional safety criterion of mining disturbance in metal mines is derived.The new method is applied to 6 mines and the Jianshan Iron Mine,and the numerical simulation of the Jianshan Iron Mine by FLAC^(3D) model is performed.The posteriori error ratio between predicted value and measured value is 0.0357,and the multi-factor cross analysis shows that the relative error of this method to the result is only 0.078.It is found that the method has high prediction accuracy and does not significantly affect the security.

关 键 词：扰动范围 修正公式 二维安全判据 数值模拟 多因素交叉分析 

分 类 号：TD853.36[矿业工程—金属矿开采]