万利矿区浅埋煤层开采地表移动变形规律

Surface Movement and Deformation Rule of Mining Shallow-buried Coal-seam in Wanli Mining Area

摘要: 为了研究万利矿区浅埋煤层的地表移动变形规律,在4个工作面上进行了地表移动观测站实测工作。通过对实测数据的分析,得出适合矿区的地表移动参数。概率积分法预计参数拟合结果表明:综放开采下沉系数比综采下沉系数大15%左右;综采开采拐点偏移距较综放开采大;主要影响角正切tanβ为走向小、倾向大,倾向较走向大40%左右。

Abstract: In order to research surface movement and deformation rule of shallow buried coal-seam mining in Wanli Area,surface movement observation was made over 4 mining faces.By analyzing observation data,surface movement parameters were obtained and used for surface subsidence prediction with probability integral method.Result showed that subsidence ratio of full-mechanized caving mining method was 15% larger than that of full-mechanized mining method,but deviation of inflection point was smaller than that of full-mechanized mining method,strike main influence angle tanβwas 40% smaller than that of trend main influence angle.