某地下矿山分段空场法地下开采对上覆岩层稳定性影响分析

为了确保某矿山生产中分段空场采矿方法安全使用的可靠性及合理性,要对采场结构参数进行优化,这对提高矿山生产效率、降低生产成本和保证矿山生产安全起着重要的作用。根据某矿山开采技术条件,针对不同的采场结构参数,采用FLAC3D数值模拟软件模拟了不同采场长度条件下的应力、塑性扰动区范围的大小,确定采场最适用、最合理的长度为50m,同时分析了地下矿体开采对上覆围岩稳定的影响,为矿山的安全高效生产提供依据。

Influence of underground mining on stability of overburden rock stratum in A Mine using sublevel open-stope mining

In order to ensure the reliability and rationality of safe use of sublevel open-stope mining in An Mine, the stope structure parameters should be optimized, which plays an important role in improving mine production efficiency, reducing production costs and ensuring the safety of mine production. According to the mining technical conditions of A Mine, in view of different stope structure parameters, the range of stress and plastic disturbance zone under different stope length conditions are simulated by FLAC_3D , which determines the most reasonable and suitable length of stope is 50 m. At the same time, the influence of underground orebody mining on the stability of overlying strata is analyzed, which provides the basis for safe and efficient production of mines.