为了查明影响铜川矿区采煤沉陷的主要因素,根据陕西铜川矿区16个采煤工作面的地表岩移观测数据。采用对应分析法研究了地表最大下沉系数与其影响因素之间的关系,分析结果表明:采动程度系数、土岩比、工作面倾向长度、表土层厚度、覆岩综合硬度、采高等是影响该矿区采煤沉陷的主要因素;以地表最大下沉系数为因变量,上述主要影响因素为自变量,用逐步回归分析方法进行变量的进一步筛选,建立了采煤沉陷回归方程,既反映了该矿区地表最大下沉系数与其主要影响因素间的量化关系,又可用于对地表最大下沉值进行采前预计。
In order to investigate the main factors of the mining subsidence in Tongchuan Mining Area,according to the surface roek dis- placement survey data of the 16 coal mining faces in Shaanxi Tongchuan Mining Area,the paper studied the relatinnship between the sur- face max subsidence coefficient and the influence factors with the relative analysis method.The analysis results showed that the mining de- gree coefficient,soil and rock ratio,coal mining face strike length,overburden thickness,comprehensive hardness...