综掘工作面湿式除尘条件下尘雾耦合数值模拟
Numerical simulation of dust and spray coupling under wet dust removal condition in fully mechanized excavation face
-
摘要: 为了得到煤尘和喷雾液滴在风流作用下的运动规律，以某煤矿综掘工作面实际情况建立煤矿巷道及各主要设备几何模型，通过采用FLUENT软件的DPM模型对综掘工作面里的风流、煤尘和喷雾液滴进行耦合数值模拟。根据数值模拟结果得出：在长压短抽通风条件下配合附壁风筒使用的湿式除尘方法取得显著除尘效果，由附壁风筒出流的径向风流形成的风幕有效抑制了煤尘向巷道后方的运动；通过对瞬态结果的分析清晰知晓了煤尘和喷雾液滴的运移趋势；煤尘和喷雾液滴总体呈逐步向巷道后方扩散并逐渐被捕捉的趋势，且主要聚集在掘进机和截割面之间的区域，同时发现煤尘和喷雾液滴在30 s内逐渐减少，在掘进机司机处粒子浓度呈先急剧增加再逐步减少的规律。Abstract: In order to obtain the migration law of coal dust and spray droplets under the action of air current, the geometric model of coal mine roadway and major equipment is established based on the actual situation of a coal mine fully mechanized excavation face. The DPM model of the FLUENT software is used to carry out the coupling numerical simulation of air flow, coal dust and spray droplets in the fully mechanized excavation face. According to the numerical simulation results, the wet dust removal method combined with the wall-attached air duct under the condition of long pressure and short ventilation has achieved remarkable dust removal effect, and the air curtain formed by the radial air flow from the wall-attached duct has effectively inhibited the movement of coal dust toward the back of the tunnel. Through the analysis of transient results, we clearly know the migration trend of coal dust and spray droplets. Dust and spray droplets in general have been gradually spread to rear of roadway and gradually caught in the area between the machine and the cutting surface, also found that coal dust and spray droplets gradually reduce within 30 seconds, particle concentration in machine driver sharply increased first, and then gradually reduced.
-
-
[1] 蒋仲安，闫鹏，陈举师，等.岩巷掘进巷道长压短抽通风系统参数优化[J].煤炭科学技术，2015，43（1）：54. JIANG Zhong’an, YAN Peng, CHEN Jushi, et al. Optimization on parameters of long distance forced and short distance exhausted ventilation system in mine rock heading roadway[J]. Coal Science and Technology, 2015, 43（1）: 54.
[2] 陈举师，蒋仲安，谭聪.岩巷综掘工作面通风除尘系统的数值模拟[J].哈尔滨工业大学学报，2015，47（2）：98-103. CHEN Jushi, JIANG Zhong’an, TAN Cong. Numerical simulation of dust removal and ventilation system in the rock comprehensive tunneling face[J]. Journal of Harbin Institute of Technology, 2015, 47（2）: 98-103.
[3] 周智勇，胡培，韩章程，等.掘进工作面通风布置对粉尘分布规律的影响[J].中南大学学报（自然科学版），2018，49（9）：2264. ZHOU Zhiyong, HU Pei, HAN Zhangcheng, et al. Effect of heading face ventilation arrangement on regulation of dust distribution[J]. Journal of Central South University（Science and Technology）, 2018, 49（9）: 2264.
[4] 王凯，郭红光，王飞，等.综掘工作面不同直径风筒下粉尘运移规律研究[J].煤矿开采，2015，20（5）：80. WANG Kai, GUO Hongguang, WANG Fei, et al. Dust movement rule in ventilators with different diameters in full-mechanized driving face[J]. Coal Mining Technology, 2015, 20（5）: 80.
[5] 张义坤，蒋仲安，孙雅茹.附壁风筒对掘进工作面通风除尘的促进作用[J].煤矿安全，2017，48（12）：161. ZHANG Yikun, JIANG Zhong’an, SUN Yaru. Promotion effect of dust removal in heading face by ventilation duct with coanda effect[J]. Safety in Coal Mines, 2017, 48（12）: 161.
[6] 董军，汪日生，于贵生，等.基于DPM压入式通风全岩巷综掘面粉尘运移规律数值模拟[J].煤矿安全，2016，47（6）：190-193. DONG Jun, WANG Risheng, YU Guisheng,et al. Numerical simulation of dust migration law at fully mechanized excavation face of rock roadway with forced ventilation based on DPM[J]. Safety in Coal Mines, 2016, 47（6）: 190-193.
[7] 胡胜勇，廖奇，王和堂，等.高瓦斯煤层综掘工作面风流-粉尘两相流动特性[J].煤炭学报，2019，44（12）：3921-3930. HU Shengyong, LIAO Qi, WANG Hetang, et al. Gas-solid two-phase flow at high-gassy fully mechanized within high gassy coal seam[J]. Journal of China Coal Society, 2019, 44（12）: 3921-3930.
[8] 孟晗，鲁忠良.综掘工作面长压短抽通风下粉尘分布的数值模拟[J].中国煤炭，2018，44（1）：128-131. MENG Han, LU Zhongliang. Numerical simulation of dust distribution under long pressure and short pumping ventilation in fully mechanized driving face[J]. China Coal, 2018, 44（1）: 128-131.
[9] 丁厚成，杨帆，张义坤.综掘工作面粉尘运移规律及控制技术研究[J].安全与环境工程，2015，22（4）：82. DING Houcheng, YANG Fan, ZHANG Yikun. Research on dust migration law and control technology in fully-mechanized working face[J]. Safety and Environmental Engineering, 2015, 22（4）: 82.
[10] 陈曦，葛少成.基于Fluent软件的高压喷雾捕尘技术数值模拟与应用[J].中国安全科学学报，2013， 23（8）：144-149. CHEN Xi, GE Shaocheng. Numerical simulation of high-pressure spray coal dust capture technology based on fluent softwareand its application[J]. China Safety Science Journal, 2013, 23（8）: 144-149.
[11] 赵丽娟，黄凯，洪侠，等.基于FLUENT的掘进机外喷雾降尘系统相似参数的探讨[J].中国安全生产科学技术，2016，12（6）：65-70. ZHAO Lijuan, HUANG Kai, HONG Xia, et al. Discussion on similar parameters of external spray dust-settling system for road header based on FLUENT[J]. Journal of Safety Science and Technology, 2016, 12（6）: 65-70.
-
期刊类型引用(10)
1. 夏丁超，吕品，杜朋，王金月. 综掘工作面风幕阻尘效果影响因素研究. 工矿自动化. 2024(01): 72-79 . 
百度学术
2. 杨鹏，崔子岭，闫大鹤，王杰，贾宏福，胡子皿. 综掘面掘进机扰动下通风除尘参数优化研究. 煤炭技术. 2024(03): 139-143 . 百度学术
3. 时鹏飞. 宝欣煤矿快速掘进工作面附壁风筒分风控尘技术研究. 煤. 2024(06): 80-82+86 . 百度学术
4. 许洋铭，莫金明. 快速掘锚工作面控风除尘技术优化与应用研究. 煤矿机械. 2024(08): 155-159 . 百度学术
5. 李慧刚，田世雄，周竹峰，卢少帅. 半煤岩巷快速掘进综合除尘技术. 陕西煤炭. 2024(09): 146-149 . 百度学术
6. 荆德吉，马纪闯，张天，任帅帅. 选煤厂并行带式输送机运转系统煤尘污染规律研究. 煤矿安全. 2023(01): 16-21 . 本站查看
7. 孙连胜. 控尘风筒出风口形式变化对掘进工作面粉尘运移的影响研究. 煤矿安全. 2023(08): 45-51 . 本站查看
8. 田东升. 金能矿回风巷综掘面粉尘运移规律和综合降尘技术研究. 煤. 2023(09): 83-85 . 百度学术
9. 王建国，李尧尧. 附壁风筒出风口参数对掘进工作面控尘效果的影响. 煤矿安全. 2023(10): 50-55 . 本站查看
10. 邓有凡. 矿用湿式除尘器在综掘煤巷中应用. 内蒙古煤炭经济. 2022(10): 132-134 . 百度学术
其他类型引用(4)
计量
- 文章访问数: 48
- HTML全文浏览量: 0
- PDF下载量: 17
- 被引次数: 14
下载:
