朱仙庄矿构造煤结构及其孔隙特征

通过对淮北宿东矿区朱仙庄矿构造煤的宏观、微观特征的观察和研究,结合构造煤的形成环境,参照琚宜文的构造煤分类方案,将构造煤划分为8类:碎裂煤、碎斑煤、碎粒煤、碎粉煤、片状煤、鳞片煤、糜棱煤和非均质结构煤。同时,选取不同类型构造煤进行压汞实验,分析了不同变形级别煤样的孔隙分布特征、孔径结构的演化特征以及孔隙的类型和连通性。结果表明:构造煤的许多性质与其变形强度密切相关,朱仙庄矿构造煤变形从弱到强的顺序依次为片状煤、碎裂煤、碎斑煤、碎粒煤、鳞片煤、非均质结构煤、碎粉煤和糜棱煤。

Tectonic coal structure and pore characteristics of Zhuxianzhuang mine

According to the macroscopic and microscopic structural features and formation conditions of tectonic coal in Zhuxianzhuang mine, with reference to Ju Yiwen classification scheme, the tectonic coal may be divided into eight types:fragmented, porphyroclastic, granulated, mealy, flake, scaly, mylonitic and heterogeneous structure coal. At the same time, different tectonic coals were selected for mercury injection test, the characteristics of pore distribution, the characteristics of evolution of the pore aperture structure, the type and the conductivity of pores were analyzed. The results showed that many properties of tectonic coal are closely related with the deformation intensity. The sequence from the weak to the strong deformation of the tectonic coal in Zhuxianzhuang mine is as follows:flake, cataclastic, porphyroclastic, granulated, scaly, heterogeneous structural, mealy and mylonitic coal.