厚松散层放顶煤开采条件下地表移动参数研究

用概率积分法预计地表移动与变形,其准确度关键在于地表移动参数的选取精度.而厚松散层条件下开采地表移动参数,有其明显的自身特点和规律.在鹤壁矿区实测资料的基础上,用数学方法分析了厚松散层放顶煤开采条件下地表移动参数的特点,并得出地表移动参数与地质采矿条件之间的函数关系式,对厚松散层下厚煤层"三下"开采及地表移动预计有一定指导意义.

Study on parameters of surface movement caused by top-coal caving mining under thick alluvial soil

In the prediction of surface movement and deformation by using the probability integral method,the accuracy of the result is mainly decided by the parameters.However,as the parameters in fully-mechanized top-coal caving mining under thick alluvial soil have their own distinctive characteristics and regularity,so based on the practical observation data of Hebi mining district,the characteristics of these parameters and the quantilative relationship formula between these parameters with the geology and coal mining condition are obtained.This may offer some reference on the prediction of surface movement and deformation in districts which similar to conditions with thick seam below thick alluvial soil or mining under "buildings,water bodies and railways".