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为了研究松散层在埋深中占比对地表移动变形特征的影响,以赵固矿区地表移动观测数据为基础,研究了松散层占比对地表下沉特征、地表最大下沉速度、地表最大下沉速度滞后距以及地表不同阶段移动持续时间的影响。结果表明在厚松散层条件下,松散层在埋深中占比增大3%,地表下沉系数由0.67增大到0.96,增大近43.3%;地表最大下沉速度系数由1.26增大到1.49,增大近18.4%;地表最大下沉速度滞后距由188 m缩减到97 m,缩短近48.4%,最后通过数值模拟,得出松散层占比对地表移动的一般性规律,并拟合出适合该地质条件的主要移动参数预计公式。
In order to study the influence of the proportion of loose layer in the depth of the ground on the deformation characteristics of the ground surface movement, based on the observation data of the surface movement of the Zhao-Gu mine area, the characteristics of the surface subsidence, the maximum subsidence velocity, Shen speed lag distance and the duration of the movement in different stages of the surface. The results show that in the condition of thick loose layer, the proportion of loose layer in buried depth increases 3%, the surface subsidence coefficient increases from 0.67 to 0.96, increasing nearly 43.3%; the maximum surface subsidence velocity coefficient increases from 1.26 1.49, an increase of nearly 18.4%. The maximum lag distance of the earth’s surface subsided from 188 m to 97 m, shortening by nearly 48.4%. Finally, by numerical simulation, the general law of the proportion of loose layers to the surface movement was obtained and fitted The main formula for predicting movement parameters suitable for this geological condition is given.