矿井“应急排水-快速清淤”的固液两相流数值模拟  

Numerical simulation of solid liquid two phase flow featuring combination of drainage and fast dredging in mine emergency

作　　者：郝传波[1] 蒲文龙[2] 张国华[3] 

机构地区：[1]黑龙江科技大学,哈尔滨150022 [2]黑龙江科技大学安全工程学院,哈尔滨150022 [3]黑龙江科技大学矿业工程学院,哈尔滨150022

出　　处：《黑龙江科技大学学报》2017年第1期8-12,25,共6页Journal of Heilongjiang University of Science And Technology

基　　金：国家自然科学基金项目(51374097;51674107)

摘　　要：针对矿井水灾煤泥淤积堵塞巷道影响应急救援时效的问题,提出"应急排水-快速清淤"同步一体的救援新思路。基于流体动力学理论,选择Eulerian多相流模型,利用Fluent对煤泥浆体固-液两相流体进行模拟,得到不同体积分数煤泥在管道内部的固体颗粒流场、压强及流速分布规律。结果表明:水平管道直径为150 mm条件下,煤泥体积分数在25%~45%时,管道输送效率较高;煤泥体积分数在55%~65%时,管道接近"堵塞"状态。为提高管道输送效率、防止管道堵塞,可对煤泥浆体进行充分搅拌,改善管道进口条件。This paper proposes a novel approach, called＂ emergency drainage-fast dredging＂ synchronization, which could address the emergency rescue problems due to slime sedimentation jam occurring in the flood disaster in mine roadways. The research building on fluid dynamics theory, selected Eu- lerian muhiphase flow model, and the Fluent software involves the simulation of solid-liquid two-phase fluid for coal slurry and a better insight into the distribution law behind flow field of solid particle, the pressure, and velocity of coal slimes with the different volume fraction inside the pipelines. The results demonstrate that the pipeline offers a higher transportation efficiency, if the horizontal line has a diameter of 150 mm and the coal volume fraction ranges between 25% and 45% ; and the pipeline tends to be left blocked if coal slurry volume fraction ranges between 55% and 65%. An effective improvement in the transportation efficiency and a better prevention of pipeline blockage are achieved by fully mixing coal slurry and improving the way a pipe works.

关 键 词：矿井水灾 煤泥 流动规律 数值模拟 

分 类 号：TD745[矿业工程—矿井通风与安全]