基于UDEC软件煤矿巷道断面离散元分析

Discrete Element Analysis of Roadway Section Based on UDEC Software Coal Mine

针对煤矿深部开采条件下,不同巷道断面形状开挖引起的围岩体能量变化规律,采用通用离散元UDEC软件建立不同巷道断面形状模型,并选择软件自带的能量模块分析巷道能量释放特征,分析巷道冲击地压危险性,根据煤矿巷道能量释放离散元分析结果,为掘进巷道断面设计及煤层冲击倾向性评价提供依据,对巷道断面形状选择冲击地压预防具有重要意义。

Aiming at the law of the change of the surrounding rock mass caused by the excavation of the roadway under the condition of the deep mining of the coal mine, the generalized discrete element UDEC software was used to establish the shape model of different roadway sections and the energy module of the software was selected to analyze the energy release characteristics of the roadway according to the analysis results of the energy dissipation of coal mine roadway, it is of great significance to select the impact ground pressure prevention for the shape of roadway section, which provides the basis for the design of roadway cross section and the evaluation of coal seam impact tendency.