陈家沟煤矿八采区，煤层平均埋深500m，平均煤厚26m，采用分层综采放顶煤开采方法，工作面宽度为120m，分层采放高13m。目前8512工作面已经开采结束，正在回采8513工作面。由于8512工作面开采时地表村庄来不及搬迁，在采动影响地表村庄范围内采用限高8.5m进行临时保护开采。随着后续工作面的开采地表移动变形将明显增大，本文通过对八采区开采地表移动规律进行研究，确定各工作面开采对地表建筑物的影响范围和影响程度，为制定详细的地表建筑物分期搬迁计划和建筑物临时保护措施提供依据。 在8512工作面开采期间建立了地表移动观测站，通过对地表移动观测成果分析，结合相邻矿井的岩移参数，建立了极不充分采动-非充分采动-充分采动分段理论预计模型。根据理论模型预计的结果，结合数值模拟计算、观测成果对比等方法对八采区地表移动沉规律进行了系统分析。 地表观测结果表明，8512工作面为极不充分采动，地表水平移动、下沉量较小，分别为397mm，976mm，工作面开采后前5个月为地表移动下沉活跃期，之后进入衰减期，开采12个月之后进入稳定期，在极不充分条件下通过限高8.5m开采，能够控制地表建筑物受损在Ⅰ级范围以内；运用分段理论预计模型，对8513、8511、8514三个工作面开采地表移动变形进行预计，当达到充分采动时，地表下沉将达到6400mm，水平移动达到1615mm，预计结果与实测和数值模拟计算结果基本相符，能够反映八采区地表移动规律，表明建立的分段理论预计模型在华亭矿区具有一定的应用推广价值，同时为地表建筑物分期有序搬迁提供了依据。

Embedding averagely 500m depth under surface, the 26m tick coal seam in the eighth mining section of Chenjiagou coal mine is extracted by slicing fully mechanized coal caving mining method with a 120m wide and 13m high slicing face. Currently, the No.8512 working face has been extracted and the No.8513 working face is under extracting. Since the No.8512 working face was mining, the village was too late to move, the mining height was limited to 8.5m for temporary protection mining in within the affected villages scope. With the follow-up face mining, surface movement and deformation will be significantly increased. Through the study of ground movement law in eighth mining section of Chenjiagou coal mine, the scope and extent of the impact on the surface by each working face mining building is determined. It provides a basis for developing detailed surface buildings phased relocation plan and temporary protection measures. The surface movement observation station was established when the No.8512 working face was under mining. Through surface movement observation results analysis, combined with the adjacent mine rock movement parameters, the theory prediction model of extremely subcritical extraction, subcritical extraction and critical extraction was established. According to the estimation results of which, combined with numerical simulation methods and observation results contrast, the law of surface movement in the eighth mining section of Chenjiagou coal mine was analyzed systematically. Surface observation results show that, the 8512 face belongs to utmost non-full extraction, surface horizontal movement and subsidence is 397mm and 976mm respectively. The first 5 months after mining is the active period of the surface movement and subsidence, then entering the decay period, and stable period after 12 months. Under extremely subcritical extraction condition, surface damage to the building is controlled within the range of grade Ⅰwith the mining height limited to 8.5m. The movement and subsidence of face 8513, 8511 and 8514 is predicted by piecewise prediction model and the surface horizontal movement and subsidence respectively reach to 1615mm and 6400mm when it is critical subsidence. Expected results with measured and numerical simulation results are basically consistent. It can reflect the law of surface movement in the eight mining area. It is expected to show that the establishment of sub-theory model has a certain application value in Huating mining area, and provides a basis for surface buildings staging and orderly relocation.