五凤煤矿软岩巷道变形内因初步分析研究

Soft Rock Roadway Deformation Internal Preliminary Analysis and Research at Wu Feng Coal Mine

五凤煤矿煤巷具有典型的节理化、遇水膨胀、易软化等物理特征,遇水之后突出地表现为非线性大变形、显著流变的工程特点,本文结合1610回风顺槽围岩现状,应用了X射线衍射对围岩岩性进行分析、对巷道表面进行了电镜微观结构扫描分析,分析可知该巷道岩性为典型的吸水膨胀型软岩,为下一步针对岩性设计支护方案提供理论基础。

Wufeng coal mine roadway is charactered with physical features such as typical jointed, water swelling, and easy softening,and will be ergineeringly featured as nonlinear large deformation and significant rheology. In combination with the current situation of 1610return air roadway surrounding rocks, this paper carries out electronicrostructure scanning analysis on the roadway surface through surrounding rock features by use of X-ray diffraction, which indicates the typical water swelling and expansion characters, and provides theoretical basis for further lithology design supporting plan.