蒙祥露天煤矿采空区垮落高度分析与采空区处理方法

Analysis of falling height and treatment method of goaf in Mengxiang Open-pit Mine

露天煤矿采场内井工开采的小煤窑形成的采空区,由于挖掘高度和宽度、煤层顶板岩层强度的不同,采空区的垮落高度、范围、形状各异,在蒙祥露天煤矿开采过程的实践中,分析出特定条件下采空区垮落形状,并依据特定条件,总结出1套钻孔探测垮落高度位置和现场计算实际安全厚度的计算式。

Due to the difference in height and width of the excavation and the strength of the rock strata in the coal seam,the height,extent and shape of the goafs which are formed by small coal mines are different.In the practice of mining process in Mengxiang Open-pit Mine,the article analyzes the shape of the goaf in a specific condition,summarizes a set of calculations for the position of the borehole to detect the height of the slump and calculate the actual safe thickness on site.