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应用曲永新提出的“不规则岩块干燥饱和吸水率判别法”和成岩胶结系数指标法,对山西某一煤矿巷道中泥质岩的膨胀性进行综合判定,其属于非膨胀性泥质岩。并对巷道中岩样的矿物组成成分进行分析,岩石中石英和铁矿的含量较多,且分布极不均匀,所含粘土矿物主要为高岭石。最后,从岩石的矿物组成、结构构造、节理面及微节理面的特征以及岩石在受压力时裂隙的扩张情况等角度,综合分析得出泥质岩以脆性破坏为主。
According to Qu Yongxin’s “Discrimination Method of Saturated Water Absorption of Irregular Rock Block” and Indicator of Dense Cementing Coefficient, the expansibility of argillaceous rock in a coal mine roadway in Shanxi is comprehensively determined, which belongs to non-expansive mud Rocks. In addition, the mineral composition of rock samples in the roadway is analyzed. The content of quartz and iron ore in the rock is relatively high, and the distribution is very uneven. The clay minerals contained in the rock are mainly kaolinite. Finally, from the perspective of mineral composition, structural structure, features of joints and microtagoid and the expansion of fractured rock under pressure, we can conclude that the brittle failure is the main component of the mudstone.