倾斜多煤层条带开采地表移动规律研究

Study on the Surface Movement Law in Strip Mining of Inclined Multiple Coal Seams

条带开采是控制地表沉陷及采动损害的有效方法之一,但是目前对多煤层条带开采时地表移动规律研究不足,尤其是倾斜多煤层条带开采地表移动规律研究较少。对此进行研究,对控制地表沉陷,减轻采动损害具有重要的理论意义和实用价值。为此采用FLAC数值模拟软件,系统研究了倾斜多煤层条带开采中不同采深、不同采宽、不同层间距和上下煤柱的空间位置关系对地表下沉和水平移动的影响规律,建立了地表最大下沉和最大水平移动值与采深和错开程度、采宽和错开程度、层间距和错开程度的综合影响关系式。

Strip mining is one of the efficient measures for controlling ground subsidence and mining damage. However, there is insufficient study on the ground movement law in strip mining of multiple coal seams, especially for inclined multiple coal seams. Its study is of both great theoretical significance and practical value. Therefore, a systematic study of the effect law of different mining depths, widths, seam spaces and the space positional relation between upper and lower coal pillars on the surface ground subsidence and horizontal movement is carried out by means of PLAC numerical simulation software. As a result, a comprehensive function relation between the maximum subsidence and the maximum horizontal movement of ground surface with the mining depth, width and seam space and their respective staggered values is established.