一、工作面地质及生产技术条件1.工作面位置与参数。淮北杨庄煤矿Ⅱ614工作面位于Ⅱ61采区西翼第二阶段,东、南与采空区相邻,西至采区上山,地表为塌陷区,有大量积水。工作面标高在-176.9～-197.7m之间,走向长870m,倾斜长平均为130m。2.煤层与顶底板情况。工作面煤层赋存较稳 First, the surface geology and production technology conditions 1. Face location and parameters. The Ⅱ614 working face of Yangzhuang Coal Mine in Huaibei is located in the second phase of the west wing of Ⅱ 61 mining area. The east and south are adjacent to the goaf and the mining area is up the mountain from the west to the subsidence area with a large amount of water accumulation. Face elevation of -176.9 ~ -197.7m between the long to 870m, the average tilt length of 130m. 2. Coal seam and roof conditions. Face coal seam more stable