矿山采空区地面塌陷危险性预测

Risk Prediction of Ground Subsidence in Mined-out Area

根据收集的矿山数据资料,运用三角函数分析法确定了采空区地面塌陷的影响范围;选取顶板岩性、松散层厚度、开采深度、地形坡度、水文地质条件、采动程度6个因素作为地面塌陷危险性预测的参评子因素,建立了地面塌陷危险性评判模型及评判指标;运用层次分析法量化各评判指标得到综合分析评判指数,将矿区地面塌陷划分为危险区、较危险区和稳定区三级。

According to collected data information of mine, the paper used trigonometric function analysis method to determine influence range of ground subsidence in mine-out area. It selected six factors that is roof lithologic character, thickness of losses bed, mining depth, terrain slope, hydrogeology condition and mining degree as evaluation sub-factors of risk prediction of ground subsidence and built a judging model and judging indexes of risk of ground subsidence. It used AHP method to quantify each judging index and get comprehensive analysis judging index which could be divided into three levels of danger area, more dangerous area and stable area.