盘区大孔采矿采场全尾砂充填挡墙力学特性研究

在实验室试验结果的基础上,用有限元法对采场围岩和充填体的应力分布状况进行了研究,按充填料浆三种不同力学性质状态对充填挡墙进行了受力分析和计算,研究表明:充填挡墙设置地点、分次充填高度、充填料内摩擦角、充填体的粘结力等是影响采场全尾砂充填挡墙力学特性的主要因素。结合冬瓜山铜矿床首采地段充填采场的实际情况提出的8#大孔采矿采场充填挡墙实施方案技术可靠,具有实施的可行性。

Study on mechanical property of whole tailing filling retaining wall in panel large hole mining stope

The stress distribution of surrounding rock and filling body in stope were studied by using finite element method on the basis of test results in laboratory.According to three different mechanical property states of filling slurry,the force of filling retaining wall was analysed and calculated.The research result showed that the location of filing retaining wall,stage filling height,internal friction angle of filling material,binding force of filling body,etc.were the main factors of influencing the mechani...