影响采空区稳定性的因素敏感性分析

大面积的采空区给矿山生产带来了巨大安全隐患,因此,深入分析采空区岩层的破坏机理,从理论上进行预测是十分必要的。首先基于可靠度对采空区的稳定性进行了分析,然后对影响采空区稳定性的因素参数值做了适当调整以确定这些参数对可靠度指标的影响程度,以保证设计在安全和经济上的合理性。通过分析指出,矿柱支撑面积与矿柱面积之比和采深等因素对采空区的稳定性影响很大,在设计时应合理考虑。

Sensitivity Analysis of Factors Influencing the Stability of Mined-out Area

Large mined-out area gives tremendous hidden trouble to the safety of mine's produce,so it is essential to deeply analyze the mechanism of strata failure of mined-out area and farther forecast the strata failure in theory.Firstly,this paper analyzes the stability of mined-out area based on reliability theory,then properly adjusts the values of parameters influencing the stability of mined-out area,more determine the sensitivity of parameters on the reliability index of stability in order to assure the reasonable design in safety and economy,finally,points out that such factors as the ratio of pillar's supporting area and its horizontal transect area,mioing depth and so on have important influence to the stability of mined-out area.