地热作用下矿尘在超深通风网络中运移机理研究
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摘要
为了揭示地热作用下空气冲击波扫掠后的井下矿尘运移规律,采用格子Boltzmann方法构建了基于地热作用的矿尘运移规律揭示模型。利用该模型,对不同条件下分布在复杂巷道系统中的矿尘颗粒被空气冲击波扫掠后的高速空气流卷入到气流中的规律进行了揭示,这些规律反映了矿尘颗粒粒径及其分布、颗粒起飞初速度、颗粒数量分布、空气流速度、作用时间对矿尘飞扬与扩散的影响。这些规律为矿尘就地消除方法的确定提供了依据。
In order to reveal the dispersion rules of mineral dust which are swept by air shock wave in the tunnel system of underground ultra deep ventilation network under the action of geothermal energy,the revealing model of mineral dust dispersion under the action of geothermal energy was built by use of the lattice Boltzmann method.Using the model,the mineral dust dispersion rules were revealed under different conditions that mineral dusts being distributed along the complicated tunnel system are involved into the high-speed airflow swept by air shock wave.These rules described the influence of particle size and its distribution,early taking-off speed,particle mass distribution,air velocity,influencing time on the mineral dust dispersion.These rules can be used to determine the method of in-situ elimination of mineral dust.
In order to reveal the dispersion rules of mineral dust which are swept by air shock wave in the tunnel system of underground ultra deep ventilation network under the action of geothermal energy,the revealing model of mineral dust dispersion under the action of geothermal energy was built by use of the lattice Boltzmann method.Using the model,the mineral dust dispersion rules were revealed under different conditions that mineral dusts being distributed along the complicated tunnel system are involved into the high-speed airflow swept by air shock wave.These rules described the influence of particle size and its distribution,early taking-off speed,particle mass distribution,air velocity,influencing time on the mineral dust dispersion.These rules can be used to determine the method of in-situ elimination of mineral dust.
引文
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[11]Zhaoli Guo,Chuguang Zheng,Baochang Shi,et al.Thermal lattice boltzmann equation for low mach number flows:decoupling model[J].Physical Review E,2007,75(3):36-44.
[2]聂文,马骁,程卫民,等.通风条件影响长压短抽掘进面粉尘扩散的仿真实验[J].中南大学学报(自然科学版),2015,46(9):3346-3 353.
[3]秦跃平,张苗苗,崔丽洁,等.综掘工作面粉尘运移的数值模拟及压风分流降尘方式研究[J].北京科技大学学报,2011,33(7):790-794.
[4]王辉,蒋仲安,杜翠凤,等.综掘巷道粉尘体积分数分布的现场实测与数值模拟[J].辽宁工程技术大学学报(自然科学版),2011,30(3):345-348.
[5]郭帅伟,邹树梁,唐德文,等.开放空间中自由下落粉尘随水平风流运移扩散的数值模拟[J].安全与环境学报,2015,15(2):266-271.
[6]谭聪,蒋仲安,王明,等.综放工作面多尘源粉尘扩散规律的相似实验[J].煤炭学报,2015,40(1):122-127.
[7]王维建,刘荣华,王鹏飞,等.不同吹吸风口位置掘进面粉尘扩散规律数值模拟研究[J].矿业工程研究,2011,26(4):24-28.
[8]丁旭东,王佰顺.煤层干式钻进粉尘扩散规律的研究[J].中国安全科学学报,2011,21(2):131-134.
[9]李明,吴超.粉尘点污染扩散模型的可视化研究[J].环境科学与技术,2006,(11):12-14.
[10]刘飞飞,魏守水,魏长智,等.基于总能形式的耦合的双分布函数热晶格玻尔兹曼数值方法[J].物理学报,2015,64(15):315-327.
[11]Zhaoli Guo,Chuguang Zheng,Baochang Shi,et al.Thermal lattice boltzmann equation for low mach number flows:decoupling model[J].Physical Review E,2007,75(3):36-44.