摘要
淮南丁集矿井1262(1)工作面为该矿-826m水平西一采区首采工作面,地质条件特殊(如深厚松散含水层和大采深),且地表移动变形规律研究得较少。因此,为了研究该矿地表移动变形规律,在1262(1)工作面建立地表移动观测站。以实测数据为基础,结合概率积分法获得了在该地质采矿条件下地表移动的相关参数。结果表明:地表下沉系数为1.16;起动距为1/7～1/6倍的平均采深;超前影响距为380m。在此基础上,计算出该矿的地表最大下沉速度及最大下沉速度滞后角分别为Vmax=21.9 mm/d和φ后=77.2°,表明在该地质采矿条件下,该矿的地表移动剧烈、地表下沉速度较快、起动距偏小等特点。在对综合移动角理论公式推导的基础上,获得了矿区综合移动角的误差值,并得出了矿区综合移动角经验值,对指导矿山开采具有一定的实际意义。
The No.1262（1） working face in Dingji coalmine,Huainan is the first coal face in the W1 winning district at-826m level,where has specific geological condition（such as deep and thick loose aquifer and larger mining depth）,as well as fewer surface movement and deformation studies.Thus,the surface movement observation station has been set up on the working face for the study of surface movement regular pattern in the coalmine.Based on measured data,combined with probability integral method has obtained related parameters of surface movement under the geological and mining conditions in the area.The result has shown： the surface subsidence coefficient is 1.16,starting distance of subsidence deformation is 1/7~1/6 average mining depth,advance distance of influence is 380m.On this basis,maximum surface subsidence velocity（Vmax） 21.9mm/d and lag angle（φl） 77.2° were calculated,and indicated that under the geological and mining conditions of the coalmine,the surface movement is violent,subsidence velocity rather quick,starting distance on the small side.On the basis of synthetic movement angle theoretical formula deduction,the mine area synthetic movement angle error and empirical values were obtained,thus have certain significance in coal mining operational guidance.
出处
《中国煤炭地质》
2013年第2期48-51,59,共5页
Coal Geology of China
基金
国家自然科学基金(41173032)
淮南矿业集团创新项目联合资助
关键词
地表移动
参数
规律
丁集矿
surface movement
parameter
regular pattern
Dingji coalmine
