College of Environment Science and Spatial Informatics, China University of Mining and Technology Levy and
Relocation Department of Xuzhou Mining Group

为合理留设"三下"采煤的保护煤柱,对徐州矿区10多个开采沉陷观测站观测结果进行了系统研究和综合分析,获得了地表移动角值参数与采矿地质条件之间对应关系。研究结果表明:下山边界角、移动角与煤层倾角关系密切,上山边界角、移动角与基岩厚度有关;超前影响角与基岩厚度成正比,与采高、工作面推进速度成反比;最大下沉速度滞后角与松散层厚度所占覆岩厚度比例、工作面推进速度成正比,与采高成反比。所建系列公式正确可靠、使用方便,在徐州矿区具有广泛的应用前景。

In order to reasonably design the protection coal pillar when mining under buildings in Xuzhou Mining Area, waterbodies and railways, this paper system atially studied and synthetically analyzed data of more than ten mining subsidence observation stations, and revealed the relationship between ground movement ang . e parameters and geological and mining conditions. The results showed that downhill boundary angle and downhill angle of draw had close relationship with angle of mi ne seam; uphill boundary angle and uphill angle of draw had close relationship with the thickness of the base rock; the fore effect angle was directly proportional to the thickness of the base rock, and inversely proportional to mining thickness and mining face forward speed; maximum subsidence speed lag angle was directly proportion al to the ratio of alluvium thickness to mining depth, mining face forward speed and inversely proportional to the mining thickness. The series of formula established in t he paper are correct, reliable and simple, and have wide application prospect in Xuzhou coal mining area.

国家自然科学基金资助项目(41071273)；