采场上覆岩层移动变形值计算

在下部采动煤层的顶板岩层内布置巷道 ,其位置选择与采场上覆岩层移动状况密切相关 .依据煤矿地表移动计算公式和采场上覆岩层活动规律 ,建立采场上覆岩层移动变形概率积分法预计计算模型 .根据最大下沉量、主要影响半径、拐点移动距等移动参数与埋深的关系 ,利用参考坐标系确定采场上覆岩层移动下沉计算公式 .并结合实例进行岩层移动变形预计计算 ,计算结果与实际观测数据十分接近 .图 1,表 1,参 5

The Calculation of Displacement and Deformation of the Superincumbent Strata above the Coal Face

The structural behaviors of superincumbent strata above the coal face plays an important role in location of roof roadway that it affects the stability of roof roadway. In order to provide a scientific basis for rational layout of roof roadway and selection of support types. According to the calculating of surface subsidence and the rules of structural behaviors of superincumbent strata above the coal face , the calculating pattern of probable integral is indicated .Based on analysis and study on functional relation between final subsidence ,influence radius, distance of corner spot and depth of superincumbent strata , it makes use of reference coordinate to get the formula of vertical displacement of superincumbent strata above the coal face. The formula of vertical displacement of superincumbent strata find applications in practice and the satisfactory effect has been achieved in example. The interaction between roof roadway location and the structural behaviors of superincumbent strata provides a scientific basis for rational layout of roof roadway and selection of support types.1fig.,1tab.,5refs.