巷道底板锚固孔排渣影响因素分析及参数优化  

Influence factors analysis and parameters optimization of deslagging in roadway floor anchoring boreholes

作　　者：刘少伟[1] 冯友良[1] 董士举[2] 

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454003 [2]河南煤业化工集团焦煤公司何庄矿,河南焦作454002

出　　处：《中国矿业大学学报》2013年第5期761-765,共5页Journal of China University of Mining & Technology

基　　金：国家自然科学基金项目(51104055);河南省重点科技攻关项目(092102310312);河南省青年骨干教师项目(2010GGJS-053)

摘　　要：利用欧拉模型的固、液两相流理论中标准K-ε三维湍流模型,对不同条件下小孔径底板锚固孔内钻渣运移过程进行三维动态分析,得出不同影响因素组合条件下排渣效果.利用相关理论计算钻渣运移过程中的压力损失,与数值分析结果对比误差较小.利用正交分析中的极差分析方法,得出决定排渣效果的影响因素由高到低依次为:排渣通道压力、进水通道孔径、机具长度、进水通道压力、排渣通道孔径.确定了底板锚固孔直径为28mm,钻孔深4m时,排渣通道压力为-3.0MPa、进水通道孔径为4mm、进水通道压力为5.0MPa、排渣通道孔径为8mm是最合理参数组合.Standard K-s three dimensional turbulent model of eulerian solid-liquid two phases flow theory was used to analyze flushing process of boring mud in floor anchoring bore with small hole diameter and the effect of deslagging under different conditions. Related theory was used to calculate the pressure loss, which was compared with numerical analysis results with marginal errors. Range analysis was used to assess the influence magnitude of various factors, which from high to low is= Pressure of deslagging channel, Diameter of flushing ports, Length of machine, Pressure of flushing ports, Diameter of deslagging channel. For floor anchoring hole diameter in 28 mm and borehole depth L=4 m, the most suitable parameters of deslagging system are= Pressure of deslagging channel --3. 0 MPa, Diameter of flushing ports 4 mm, Pressure of flushing ports 5.0 MPa and Diameter of deslagging channel 8 mm.

关 键 词：小孔径巷道底板锚固孔 排渣影响因素 排渣系统参数 

分 类 号：TD41[矿业工程—矿山机电]