冬瓜山矿床开采方案优化的数值模拟研究

Optimization of mining methods of Dongguashan deposit through numerical method

通过正交试验方法 ,运用RFPA数值程序研究了不同开挖步骤、充填体刚度、充填接顶情况对铜陵有色金属公司冬瓜山矿床开挖稳定性的影响。以采场破坏的峰值载荷为评判依据 ,试验表明 ,在给定的数值试验条件下 ,充填接顶对峰值载荷影响最大 ,而充填体刚度影响最小 ,这表明 ,在冬瓜山矿开采过程中 ,一定要保证充填的接顶质量。

Through orthogonal test method.taken maximum load as judging basis,the effect of mining steps,filling material rigidify and filling ratio on stpoe stability is studied by using RFPA numerical simulation.Numerical analysis demostrates the filling ratio has the largest effect on stope stability and filling material has the least effect on it.so filling ratio should be increased in mining operation of Dongguasha deposit.