近距离煤层开采围岩地质系统分类方法研究

Study on Classification Method of Surrounding Rock Geological System in Short Distance Coal Seam Mining

为解决11号与10号煤层近距离开采安全问题,必须对近距离煤层开采围岩地质条件进行分类。首先分析了国内外各种工程对围岩分级的理论。结合山西某煤矿近距离煤层独特的地质开采条件,以围岩系统总体分类、围岩区域界定、围岩参数测定、系统内构造参数、水文地质参数、上下层煤开采参数、上下层煤开采施工关系参数、地表形态参数等近距离煤层安全开采相关因素作为山西某煤矿近距离煤层围岩分级的因素。

In order to solve the safety problem of short distance mining in No. 11 and No. 10 coal seams, the geological conditions of surrounding rock in short distance mining must be classified. Firstly, the theories of surrounding rock classification in various projects at home and abroad are analyzed. According to the unique geological mining conditions of the close seam in a coal mine in Shanxi, we have obtained the factors related to the classification of the close seam surrounding rock in a coal mine in Shanxi, including the general classification of the surrounding rock system, definition of surrounding rock area, determination of surrounding rock parameters, structural parameters in the system, hydrogeological parameters, mining parameters of upper and lower seams, construction relationship parameters of upper and lower seams, surface morphological parameters and other factors related to the safe mining of the close seams. The corresponding surrounding rock grades are divided, and the basic classification method of surrounding rock geological system of close coal seam mining in a coal mine in Shanxi Province under the influence of complex factors is constructed.