综掘面风流智能调控下风流瓦斯及粉尘多源数据融合评价模型  

Multi-source Data Fusion Evaluation Model of Airflow Gas and Dust Under Intelligent Control of Airflow in Fully Mechanized Excavation Face

作　　者：龚晓燕[1] 朱倩丽 常虎强 付浩然 陈龙[1] 孙海鑫 王天舒 GONG Xiaoyan;ZHU Qianli;CHANG Huqiang;FU Haoran;CHEN Long;SUN Haixin;WANG Tianshu(College of Mechanical Engineering,Xi'an University of Science and Technology,Xi'an,Shaanxi 710054,China;Shaanxi Coal Group Shenmu Ningtiaota Mining Co.,Ltd.,Shenmu,Shaanxi 719300,China)

机构地区：[1]西安科技大学机械工程学院,陕西西安710054 [2]陕煤集团神木柠条塔矿业有限公司,陕西神木市719300

出　　处：《矿业研究与开发》2024年第9期123-130,共8页Mining Research and Development

基　　金：国家自然科学基金项目(52374226);陕西省自然科学基础研究计划——企业陕煤联合基金项目(2021JLM-01)。

摘　　要：针对综掘工作面通风总量控制模式下,出风口风流状态不能实时动态变化导致瓦斯及粉尘灾害和污染隐患问题,对风流瓦斯及粉尘耦合下的复杂通风环境安全状态进行多源数据融合评价分析,可为风流精细化智能调控提供理论依据,防范灾害事故的发生。采用流体力学与离散元耦合方法建立风流瓦斯及粉尘气固耦合的有限元计算模型,设计搭建风流监测及智能调控测试试验平台进行模型的验证,模拟确定关键隐患位置,运用层次分析法构建3层结构的评价指标体系,确定各指标权重。采用混合式两级融合结构对最优加权的数据级融合和灰色关联的决策级融合进行分析,建立5级风险等级评价模型。对陕北某煤矿综掘面进行融合评价分析,发现在出风口距端面最短距离5 m的极端工况下,风流智能调控装置口径为1 m、水平偏转20°、垂直偏转6°时,评价等级为安全,且与调控前对比,不同测点位置处瓦斯体积分数及粉尘质量浓度均有不同程度下降,验证了该模型的有效性。The airflow state of the air outlet can not realize real-time dynamical change which leads to the problem of gas and dust disasters and pollution hazards under the total ventilation control mode in fully mechanized excavation face.The multi-source data fusion evaluation and analysis of the complex ventilation environment safety state under the coupling of airflow gas and dust can provide a theoretical basis for the fine intelligent control of airflow and prevent the occurrence of disasters and accidents.The finite element calculation model of gas-solid coupling of airflow gas and dust was established by fluid mechanics and discrete element coupling method.The experimental platform of airflow monitoring and intelligent control test was designed and built to verify the model,and the key hidden danger location was simulated and determined.The evaluation index system of three-layer structure was constructed by AHP,and the weight of each index was determined.A hybrid two-level fusion structure was used to analyze the optimal weighted data-level fusion and grey relational decision-level fusion,and an evaluation model with five-level was established.The fusion evaluation analysis of the fully mechanized excavation face of a coal mine in northern Shaanxi shows that under the extreme working condition of the shortest distance of 5 m from the air outlet to the end face,the evaluation grade is safe when the diameter of the air flow intelligent control device is 1 m,the horizontal deflection angle is 20°,and the vertical deflection angle is 6°.Compared with that before control,the gas volume fraction and dust mass concentration at different measuring points decrease to varying degrees,verifying the effectiveness of the model.

关 键 词：综掘面 风流智能调控系统 评价指标体系 多源数据融合 灰色关联分析 瓦斯体积分数 

分 类 号：TD712[矿业工程—矿井通风与安全] TD714