评价崩落法采矿方案、结构参数和放出方式等项的优劣,矿石损失贫化值是基本判据之一。因此,预测矿石贫损值应是崩落法放矿研究中的一个基本问题。就其预测方法广义一点讲,可分成下列五种,现根据笔者的学习和研究谈谈对各种方法的认识。 (一)统计与类比推理法 在采矿方法选择与设计中,矿山设计部门常根据实际统计资料,应用类比推理方法预测设计条件下的贫损指标。由于矿体赋存条件和采矿方法结构等项影响因素很难找到完全相同条件,故经常在同一设计条件下,所取用的贫损指标因人而异。由此表明这种方法的局限性很大,准确性也比较差。 It is one of the basic criteria to evaluate the pros and cons of the mining program, structure parameters and release mode of caving method. Therefore, predicting the value of ore loss should be a basic problem in the study of caving by caving method. On the broader point of its forecasting method, it can be divided into the following five kinds, according to the author's study and research to talk about the understanding of various methods. (I) Statistics and Analogical Reasoning In the selection and design of mining methods, the mining design department often uses the analogical reasoning method to predict the loss index under the design conditions based on the actual statistical data. Due to the factors such as ore-hosting conditions and mining method structure, it is difficult to find exactly the same conditions. Therefore, under the same design conditions, the index of depletion to be taken varies from person to person. This shows that the method of great limitations, accuracy is also relatively poor.