摘要
利用平面图形几何重心公式计算回采工作面水平投影图形的重心坐标，然后根据影响传播角和开采深度计算下沉盆地中心位置的坐标．利用开采沉陷预计方法和插值计算下沉等值点方法求得每条下沉等值线上３６０个地表点的坐标，再利用解析方法推导出每条下沉等值线所围成的面积和下沉盆地体积等计算公式，并且采用计算机技术自动进行解算．最后，给出了一个应用实例．
The barycentric coordinates of the plane view projection of a coal face are solved with a formula of geometric gravity centre. The coordinates of the centre point of a subsidence trough are calculated by the effect transference angle and the mining depth. The coordinates of three hundred and sixty points on each subsidence isoline are computed through a method for prediction of surface subsidence and for interpolation of isoplethic points. The formulas for calculation of the area encircled by each subsidence isoline and the volume of subsidence trough are reckoned by analytic method. The automation of computation is realized by a computer. Finally, an actual example is given for applying the algorithm.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
1997年第2期155-159,共5页
Journal of China Coal Society
关键词
下沉盆地
重心坐标
岩石沉陷
解析法
体积
计算
subsidence trough, barycentric coordinates, effect transference angle, analytic method
