Influence factors analysis and parameters optimization of deslagging in roadway floor anchoring boreholes
Influence factors analysis and parameters optimization of deslagging in roadway floor anchoring boreholes
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巷道底板锚固钻孔排渣影响因素分析及参数优化
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
Dong, Shi-Ju
中科院分区：
文献类型：
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作者：
Liu, Shao-Wei;Feng, You-Liang;Dong, Shi-Ju
采用欧拉固液两相流标准K-E三维湍流模型，分析了小孔径底板锚固井中钻孔泥浆的冲刷过程及不同条件下的排渣效果。利用相关理论计算了底板锚固孔的压力损失，并与数值分析结果进行了比较，误差较小。采用极差分析评价了各因素的影响大小，由大到小依次为：排渣槽压力、冲洗口直径、机器长度、冲洗口压力、排渣槽直径。对于底板锚固孔直径为28 mm、钻孔深度为L=4m的情况，排渣系统的最佳参数为：排渣槽压力3.0 MPa，冲渣口直径4 mm，冲渣口压力5.0 MPa，排渣槽直径8 mm。
Standard K-ethree 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 28mm and borehole depth L=4m,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 5.0MPa and Diameter of deslagging channel 8mm.