娘娘山大口子滑坡下伏煤矿采空区的稳定性分析

论文在论述娘娘山大口子滑坡下伏煤矿采空区地质、采矿和工程地质特征的基础上,定性与定量地分析与评价了该滑坡的稳定性,同时,使用有限元数值模拟方法对该滑坡下伏煤层随采矿过程的变化规律进行了研究,对煤层开挖前后整个岩体中的应力、应变状况及塑性区变化规律进行了模拟,并对滑坡采空区的长期稳定性进行了评价预测。结果表明:该滑坡下伏的采空区变形尚未完成,必须采取相应治理措施。

Analysis and Evaluation of the Stability About the GOB of the Coalmine Whichis Under the Dakaozi Slope of the Niangniang Mountain Henan Province

Based on the geologic,mining coalmine and engineering geologic characteristics of the gob of the coalmine under the DAKAOZI slope of the NIANGNIANG mountain,the stability of the slope is analyzed and evaluated by the ways of quantitative and qualitative analysis.At the same time,the variety rule of the coal beds below the slope is studied by the using of FEM during the process of mining for coal.The statuses of the stresses and strains,the varieties of the plastic area are simulated in the whole rock.The long?term stability of the gob area under the slope is predicted.As a result,the deformation of the gob area under the slope hasn,t been finished,and the relative measures must be taken.