王家岭矿12314智能化综放工作面粉尘运移规律数值模拟与协同控尘技术研究
Numerical simulation of dust migration and collaborative dust control technology in 12314 intelligent longwall top-coal caving face of Wangjialing Mine
摘要
为揭示综采工作面粉尘运移规律并优化粉尘防治措施,以王家岭矿 12314 智能化综放工作面为研究对象,采用计算流体动力学(CFD)方法建立综采工作面风流-粉尘耦合三维数值模型,对工作面风流分布特征及粉尘扩散规律进行了模拟分析.结果表明:采煤机滚筒截割区域及其下风侧为粉尘高浓度区,粉尘在风流作用下主要沿工作面向下风侧及回风巷方向运移,并在底板及煤壁附近形成高浓度聚集区;呼吸带高度范围内粉尘质量浓度普遍较高,最大值可达1 050 mg/m3,是综采工作面粉尘防治的重点区域.基于粉尘运移特征,提出水动力喷雾与负压抽吸喷雾相结合的协同降尘技术,并在喷雾系统中引入活性磁化水,以提高水雾对疏水性煤尘的润湿与捕集能力.现场应用结果表明,该协同降尘技术可显著降低工作面粉尘浓度,总粉尘和呼吸性粉尘降尘效率分别达到85%和 80%以上,有效改善了综采工作面作业环境.研究结果可为类似综采工作面的粉尘防治提供理论依据和工程参考.
To investigate the dust migration characteristics and optimize dust control measures in fully mechanized mining faces,the 12314 intelligent longwall top-coal caving face in Wangjialing Mine was studied.A three-dimensional airflow-dust coupling model was established using computational fluid dynamics(CFD)to simulate airflow distribution and dust dispersion.Results show that the shearer cutting area and its downwind side are high-concentration dust zones,and dust mainly migrates toward the downwind side and the return airway under the action of airflow.Dust concentration in the breathing zone is relatively high,with a maximum value of 1 050 mg/m3,making it a key area for dust control.Based on these characteristics,a collaborative dust suppression technology combining hydrodynamic spraying and negative-pressure suction spraying was proposed,and activated magnetized water was introduced to enhance coal dust wettability.Field results show that the technology effectively reduces dust concentration,with total dust and respirable dust reduction efficiencies exceeding 85%and 80%,respectively.The proposed technology effectively improves the working environment of the fully mechanized mining face and provides a theoretical basis and engineering reference for dust control in similar mining conditions.
年，卷(期)：
2026, 45(10)
分类号：
TD714
机标分类号：
TD714
TD823
TD323
在线出版日期：
2026年10月29日
