两淮矿区地表移动角值参数规律研究

Study on Angle Parameter Law of Surface Ground Movement in Huainan and Huaibei Mining Areas

基于两淮矿区实测数据,详细分析了地质采矿条件对边界角、移动角的影响,得出综合移动角、综合边界角与第三、四系松散层厚度之间存在着对数关系,随着松散层厚度的增大,综合移动角、综合边界角逐渐减小;利用数理统计方法建立了厚松散层矿区边界角、移动角的经验公式,为两淮矿区建构筑物保护煤柱留设提供了可靠的角值参数。

Base on the site measured data of Huainan and Huaibei mining areas,the geological and mining conditions affected to the boundary angle and the movement angle were analyzed in detail.The analysis showed that there was a logarithmic relationship between the comprehensive movement angle,comprehensive boundary angle and the Tertiary and Quaternary unconsolidated strata thickness.With the thickness of the unconsolidated strata increased,the comprehensive movement angle and the comprehensive boundary angle would be reduced steadily.The mathematical statistics method was applied to establish a experiment formula of the boundary angle and the movement angle of the thick unconsolidated strata mining area to provide the reliable angle parameters to set up the protective coal pillars for the building structures on the surface ground of Huainan and Huaibei mining areas.