基于离散元数值模拟采空区顶板崩落矿岩冲击效应研究

Study on the impacting effect of roof stopping ore and rock based on discrete element numerical simulation technique

文章以露天采区和地下采空区相互错杂的复杂矿区为工程背景,提出崩落采空区顶板充填采空区以提高露天开采环境安全性的工程方法。运用离散元数值分析程序模拟采空区顶板崩落矿岩对悬空底板的冲击作用,试图探寻解决在岩体结构改造工程过程中的技术难题。通过数值模拟分析,文章提出了分层崩落矿岩、大崩落宽度和逐次增加矿岩崩落厚度的顶板崩落工程方法。

In this paper, the project background is the complex mining area which is mixed with open pit and umderground goaf. By using discrete element analysis program to simulate the impact action of the role caved ore and rock to suspended l^ottom, the author puts forward a engineering method for the structure reformation of rock mass which caving the gob＇ s roof to improve the security of open-pit mining environment, to solve tbe technical problems in the process of rock mass structure reformation project. By the numerical simulation analysis, It is raised the engineering method for the structure reformation which is caving in mine rock stratified, the large width of the caving and increasing the thickness of caving rock successively.