薄煤层回采巷道煤岩体结构面研究初探

Preliminary Research on Coal-rock Structural Plane of Mining Roadway Located in Thin Coal Seam

半煤岩巷道为开采薄煤层煤炭资源而设计的,深入剖析了半煤岩巷道在围岩结构、力学性质及围岩变形、破裂等层面上的不连续性,将半煤岩巷道帮部煤体与岩体交界面定义为煤岩体结构面,研究了基于结构面粗糙度系数估算的煤岩体结构面强度以及相关材料参数选择方法。研究成果对于半煤岩巷道煤岩体结构面稳定性研究及巷道围岩控制具有重要意义。

Half-Coal-rock roadway is designed for mining coal resources in the thin seam.In this paper,the discontinuity of the coal-rock roadway on the level of surrounding rock structure,mechanical properties,as well as surrounding rock deformation and rupture were deeply analyzed.The interface between coal and rocks in the half-coal-rock roadway sidewall was defined as coal-rock structural plane.Meanwhile the strength of the structure based on the estimation of roughness coefficient and selecting methods of the material parameters were studied.The research results were of great significance in studying the structural plane stability in half-coalrock roadway and the controlling of the surrounding rock roadway.