引入风流热流耦合特性的智能通风系统状态重构参数修正  

Correction of state reconstruction parameters in intelligent ventilation systems by incorporating the heat-flow coupling properties of airflow

作　　者：贾瞳 马恒[1,2] 高科[1,2] JIA Tong;MA Heng;GAO Ke(College of Safety Science and Engineering,Liaoning Technical University,Huludao 125105,Liaoning,China;Key Laboratory of Mine Thermal Disasters and Prevention,Ministry of Education,Huludao 125105,Liaoning,China)

机构地区：[1]辽宁工程技术大学安全科学与工程学院,辽宁葫芦岛125105 [2]矿山热动力灾害与防治教育部重点实验室,辽宁葫芦岛125105

出　　处：《安全与环境学报》2024年第11期4316-4328,共13页Journal of Safety and Environment

基　　金：国家自然科学基金项目(52074148)。

摘　　要：为精准定量重构时间序列下实际矿井通风系统状态,以实时反映风网运行特征,基于实际矿井中风流的空气动力耦合热力流动特征,提出了时空特征下风流状态属性变化式,以井下网络和通风动力参数作为修正指标,以动态风流状态属性为修正变量,提出了通风系统状态重构参数点修正模型。为表述通风系统的动态连续运行状态,在点修正基础上引入连续时间特征,构建状态重构参数区间映射修正模型,以求解出时间序列下的系统状态重构参数波动区间来完成精准状态重构。为验证修正模型可靠性,以常村煤矿为工程对象进行状态重构,结果验证了井下风流的动态热流耦合特征及提出的风流状态属性变化式的可靠性,得出了状态重构参数波动区间,达到了实时准确构建风网运行状态的目的,有效提高了后续风网实时解算和控风决策的本质精度。To accurately and quantitatively reconstruct the state of the ventilation system in an operational coal mine over time,and to effectively reflect the real-time operational characteristics of the ventilation network,this study tackles the challenge of low reliability in the reconstruction parameters.This challenge is primarily due to the interactions of various constraining factors,including unsteady airflow properties,fluctuating environmental conditions,and gradient flow fields within the mine.Building on the theory that airflow within a mine essentially constitutes a polytropic process resulting from the dynamic coupling of aerodynamic and thermal processes,this study has derived a formula for the variation of airflow heat-flow state attributes.This formula is applicable to the spatiotemporal characteristics of an operational mine.Utilizing the underground network and ventilation dynamics parameters as correction indicators,and treating the dynamically varying airflow heat-flow state attributes as correction variables,a point correction model for the system state reconstruction parameters has been developed.The working condition point that reflects the coupling characteristics of ventilation power and the ventilation network was used as the criterion for correction.Considering the observed displacement in the state reconstruction parameters following point correction,it was further suggested that the point correction model,which overlooks the topological structure of the ventilation network,essentially performs steady-state corrections on the state indicators of individual roadways.This approach struggles to accurately represent the dynamic and continuous operational state of the ventilation system.Therefore,it was concluded that the system state reconstruction parameters should be represented as intervals based on dynamic working conditions.To address this issue,continuous time characteristics were introduced as correction indicators.A correction model for the interval mapping of system state reconstruction pa

关 键 词：安全工程 智能通风 非稳态传热 状态重构 动态工况 热流耦合 

分 类 号：X936[环境科学与工程—安全科学]