二次动压巷道支护设计与参数优化

采用正交数值试验和灰色理论中的关联度分析,进行阳泉矿区二次采场巷道的分析与支护参数优化决策.选择13因素3水平的正交试验方案,进行27次试验,分析了不同应力状态和支护参数的巷道稳定性与变形特征.在计算中采用巷道稳定性和变形收敛率等多种评价指标,进行了局部优化;考虑支护成本和施工难易等因素,采用灰色理论,进行最佳方案的关联度分析.该研究已应用于阳泉矿区二次采场巷道支护设计,并取得较满意的支护效果.

Reinforcement design and parameters optimization for a secondary dynamic pressure tunnel

The orthogonal experiment method and the associated analysis of the grey theory were used to analyze the results of numerical simulation and to optimize the supporting parameters for a coal mine tun- nel affected by two-mining in Yangquan mining area.The designed orthogonal experiment needs 27 numer- ical simulations including 13 factors with 3 levels for each one.According to the supporting parameters, tunnel stabilization and deformation in the condition of different stresses and supporting parameters were analyzed.Some criteria of tunnel stabilization and deformation to determine a corresponding local optimiza- tion scheme were computed.Based on consideration of the supporting cost and difficulty of construction comprehensively,an optimal supporting scheme for the secondary dynamic pressure tunnel was deduced by the associated analysis of the grey theory.The research results were put into use in Yangquan mining area and got the satisfied support effect.