我们睢宁煤矿是徐州东翼煤田的一个地方小矿,矿区的北侧与徐州矿务局的董庄煤矿仅一个“破碎带”之隔。董庄煤矿的运煤铁路就从我矿西二采区的上方通过(见图1)。为了充分开采地下宝藏,并确保铁路运输安全,为铁路充填提供依据,找出在我矿区条件下煤层采空区地表沉陷的规律,以指导地下采煤的安全进行,我们设置了“地表观测站”,进行地 We Suining Coal Mine is a small coal mine in the eastern wing of Xuzhou, the northern side of the mining area and Xuzhou Mining Bureau Dongzhuang coal mine is only a “broken belt” separated. Dong Zhuang coal mine railway from mine mine over the second mining area above (see Figure 1). In order to fully exploit underground treasures and ensure the safety of railway transportation, we provide the basis for railway filling to find out the law of surface subsidence in the coal mined area under the conditions of mine to guide the underground mining safety. We set up the “Surface Observation Station ”, Carried out