旧工业建筑再生施工粉尘运移特性数值模拟研究  

Numerical simulation of dust suppression characteristics in regeneration of old industrial buildings

作　　者：田卫[1] 马睿浩 关小杰 高明哲[1] 谭啸 TIAN Wei;MA Ruihao;GUAN Xiaojie;GAO Mingzhe;TAN Xiao(School of Civil Engineering,Xi'an University of Architecture and Technology,Xi'an Shaanxi 710055,China;Glodon Company Limited,Beijing 100193,China)

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]广联达科技股份有限公司,北京100193

出　　处：《中国安全科学学报》2025年第1期231-238,共8页China Safety Science Journal

基　　金：国家自然科学基金资助(51908452)。

摘　　要：为探究旧工业建筑再生施工过程中产尘工序与环境流体对粉尘时空分布的影响,利用现场试验与数值模拟方法,研究不同工序及背景风速作用下施工区域内部的粉尘运移特性。通过分析大量粉尘数据,明确旧工业建筑再生施工主要工序的尘源特征类型;选取具有典型旧工业建筑特征的某待改造工业厂房,开展打磨和铲运2类工序的现场试验;使用数值模拟方法分析5种入口风速与2种产尘工序下的粉尘质量浓度分布,明确旧工业建筑再生施工空间粉尘易聚集区。结果表明:打磨工序最高粉尘质量浓度超限倍数为54倍,铲运工序最高粉尘质量浓度超限倍数为37倍;入口风速的改变会影响施工区域内粉尘的主要影响区分布,同时,会改变粉尘质量浓度在施工区域内达到动态平衡的进程;产尘工序的改变会对粉尘质量浓度分布产生一定的影响,对特定工序的工作强度进行增强则会导致其下游粉尘质量浓度同比增加。To explore the effects of dust-generating processes and environmental fluids on the spatiotemporal distribution of dust during the regeneration of old industrial buildings,field studies and numerical simulation was used to investigate the dust suppression characteristics inside the construction area under different processes and background wind speeds.The dust source characteristics in the main processes of re-construction of old industrial buildings were clarified by analyzing a large amount of dust data.Typical old industrial buildings were selected for the field studies of sanding and shoveling processes.Numerical simulation was performed to investigate the dust mass concentration distribution under five inlet air velocities and two dust-producing processes and to identify the dust-aggregation zones in the reclaimed construction space of old industrial buildings.The results showed that the maximum dust mass concentration in the grinding process exceeded the limit by 54 and 37 times in the grinding and shoveling process,respectively.Inlet wind speed affected the dust mass distribution of the main impact zones in the construction area and changed the process of dust reaching dynamic equilibrium.Dust-generating process variations impacted on the dust mass concentration distribution.Moreover,the workload increase of a specific process resulted in a proportional increase in downstream dust mass concentrations.This study can provide fundamental knowledge for dust management in the reconstruction of old industrial buildings.

关 键 词：旧工业建筑再生 施工粉尘 运移特性 数值模拟 粉尘质量浓度 

分 类 号：X964[环境科学与工程—安全科学]