复杂地质条件下大断面煤巷快速掘进的研究与实践

 采用综合机械化掘进技术是实现煤巷快速掘进的主要途径。为了提高复杂地质条件下大断面煤巷掘进速度和机械化水平，本文首先分析了综掘工作面快速掘进的诸多影响因素，继而利用FLAC3D数值模拟软件，研究了不同掘进进尺时，巷道围岩应力场及位移场分布特征，分析了同一掘进速度下不同支护参数对大断面煤巷快速掘进的影响。在此基础上依据林南仓煤矿2220工作面综掘实际，提出了实现快速掘进的技术措施：掘进切割快速、支护参数合理、辅助运输连续及其三大工序之间的优化配置，从而达到快速掘进的目的。

Research and Practice on Rapid Excavation Technology for Large Cross Section Seam Roadway under Complicated Geological Conditions

Using the comprehensive mechanized driving technology is considered the main route of rapid coal roadway driving. In order to improve the driving speed and mechanization level of large cross section seam roadway under complicated geological conditions, the various factors were discussed mainly in Linnancang Coal Mine. With the numerical simulation (FLAC3D), the paper analyzes the roadway surrounding rock stress field and displacement distribution characteristics in the wake of different driving footage. Influence of different supporting parameters on the driving speed was analyzed. Connected with the practical construction, the paper objectively advances the technical measures to realize rapid excavation: advance cutting rapidly, support parameters reasonably, auxiliary transportation continuously and the optimal allocation between them. By taking the above technical measures, the rapid excavation of No.2220 heading face in Linnancang coal mine is realized.