耿晓伟;黄敬雅;

• 1:辽宁工程技术大学安全科学与工程学院
• 2:矿山热动力灾害与防治教育部重点实验室(辽宁工程技术大学)

摘要(Abstract)：

游离二氧化硅(SiO_2)是导致尘肺病的重要因素。为了研究煤尘中游离SiO_2在呼吸系统中的剂量，采用多路径粒子剂量测定模型测定煤尘粒子在呼吸系统中的沉积率，在此基础上以呼吸接触游离SiO_2剂量、质量分散度和沉积率三者乘积作为游离SiO_2在呼吸系统中的剂量，并对煤尘沉积的影响因素进行了分析。结果表明：1个工作日内游离SiO_2在胸外区沉积剂量最高，肺部其次；煤尘颗粒在呼吸系统中的沉积与粒径和劳动强度有关，与煤尘浓度无关；沉积率受粒径的影响相对较大，呼吸系统中煤尘沉积率曲线随粒径增大呈U形变化；沉积率受劳动强度的影响相对较小，劳动强度增强沉积率变化幅度增大。研究成果可以为尘肺病防控提供参考。

关键词(KeyWords)： 安全卫生工程技术;煤尘;游离二氧化硅;呼吸系统;剂量;影响因素

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51704146)

作者(Authors): 耿晓伟;黄敬雅;

DOI: 10.13637/j.issn.1009-6094.2020.1777

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