摘要
为提高煤矿综掘面粉尘防治技术水平,通过旋流风幕与抽风口的协同作用优化风流减少粉尘聚集,改善工作面通风环境。将附壁风筒和自主研制的风流调控装置相结合,设计混合式通风下的旋流风幕与抽风口风流调控系统。首先,利用数值模拟方法,分析附壁风筒条缝宽度、轴径风量比和抽风口口径、偏转角度单参数变化对粉尘运移分布的影响;其次,采用粒子群优化算法(PSO),求解得到司机及行人位置粉尘双目标优化的最优调控方案;最后,分别通过数值模拟和搭建的调控降尘试验平台测试验证最优方案优化效果。结果表明:调控后司机位置粉尘质量浓度降低41.5%;回风侧行人呼吸带平均粉尘质量浓度降低64.2%,物理试验与数值模拟的降尘优化效果基本一致,验证了旋流风幕与抽风口综合降尘方法的有效性。
In order to improve the dust control technology of the coal mine heaving face,the synergistic effect of swirling air curtain and air outlet was adopted to optimize the airflow to reduce dust accumulation and improve the ventilation environment of the working face.Combining the attached wall blower and the self-developed airflow control device,the cyclone air curtain and the airflow control system of the extract air outlet under the hybrid ventilation were designed.Firstly,numerical simulation was used to study the influence law of dust transport and distribution caused by the slit width of the wall duct,shaft diameter air volume ratio and suction port diameter,and single parameter variation of deflection angle.Secondly,the particle swarm optimization(PSO)algorithm was used to obtain the optimal control scheme of dual objective optimization of dust in driver and pedestrian positions.Finally,numerical simulation and dust control test platform were built to verify the optimization effect of the optimal solution.The results showed that the dust concentration in the driver's position was reduced by 41.5%,and the average dust concentration of the pedestrian breathing belt at the return air side was reduced by 64.2%.The optimized effect of dust reduction from physical experiments and numerical simulations was in general agreement.The effectiveness of the comprehensive dust removal method of swirling air curtains and air outlets is verified.
作者
龚晓燕
张浩
陈龙
费颖豪
王天舒
牛虎明
GONG Xiaoyan;ZHANG Hao;CHEN Long;FEI Yinghao;WANG Tianshu;NIU Huming(College of Mechanical Engineering,Xi'an University of Science and Technology,Xi'an Shaanxi 710054,China;Shaanxi Coal Group Shanbei Mining Co.,Ltd.,Yulin Shaanxi 719000,China)
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2023年第6期56-63,共8页
China Safety Science Journal
基金
国家自然科学基金面上项目资助(51874235)
陕西省自然科学基础研究计划-企业陕煤联合基金资助(2021JLM-01)。
关键词
综掘面
抽风口
风流调控
旋流风幕
粉尘场
双目标优化
comprehensive excavation face
exhaust outlet
airflow control
swirling wind curtain
dust field
dual objective optimization