高温高湿环境下风速对矿工安全工作极限时间的影响
Influence of wind velocity on miners’ safe working limit time in high-humidity and high-temperature environment
-
摘要: 为了研究湿热矿井环境下风速对矿工安全工作极限时间的影响规律，以5名经验矿工作为受试人员，在人工微气候室模拟的24种不同矿井环境下，使其按中等强度进行劳动模拟，在记录实验时间的同时，测量受试人员的心率和直肠温度2项生理指标，以确定矿工安全工作极限时间；实验共设置4组风速：静风（风速＜0.2 m/s）、低速风（1 m/s）、中速风（2.5 m/s）、高速风（4 m/s），3组温度：26、30、34 ℃，2组相对湿度：70%、90%；基于实验数据，利用Cox回归方法和生存函数法分析了风速对安全工作极限时间的影响作用，并给出了安全工作极<限时间推荐值。结果表明：风速对矿工安全工作极限时间的影响程度大于相对湿度而小于温度；在4种风速类型中，生存率下降速率由大到小顺序为：静风>低速风>中速风>高速风，增加风速可有效提高安全工作极限时间值，但当风速达到2.5 m/s时，作用效果不明显。Abstract: In order to study the influence of wind velocity on the safe working limit time of miners in a humid and hot mine, five experienced mine workers were selected as subjects to exercise labor simulations with moderate intensity under 24 different mine environments simulated by an artificial microclimate room. While recording the experimental time, their physiological indicators were measured: heart rate and rectal temperature, therefore to determine safe working limit time of the miners. There are 4 groups of wind velocity are set: static wind（wind velocity less than 0.2 m/s）, low velocity wind（1 m/s）, medium velocity wind（2.5 m/s）, high velocity wind（4 m/s）, 3 groups of temperature are set: 26, 30, 34 ℃, 2 groups of relative humidity are set: 70%, 90%. According to the experimental data, the Cox regression method and survival function method are used to analyze the effect of wind velocity on the safe working limit time and the recommended value of safe working limit time is given. The result shows that: the influence of wind velocity on miners’ safe working limit time is greater than relative humidity but less than temperature. Among the four wind velocity types, the order of survival rate decline rate from high to low is: static wind>low velocity wind>medium velocity wind>high velocity wind. Increasing wind velocity can effectively increase the value of the safe working limit time, but the effect is not great when the wind velocity reaches 2.5 m/s.
-
-
[1] 闫洪远.韦家沟煤矿热害防治技术分析[J].煤矿机械，2019，40（2）：55-56. YAN Hongyuan. Analysis of heat hazard prevention and control in Weijiagou coal mine[J]. Coal Mine Machinery, 2019, 40（2）: 55-56.
[2] 王连聪，梁运涛，罗海珠.我国矿井热动力灾害理论研究进展与展望[J].煤炭科学技术，2018，46（7）：1-9. WANG Liancong, LIANG Yuntao, LUO Haizhu. Research progress and outlook on theory of thermodynamic disaster of coal mine in China[J]. Coal Science and Technology, 2018, 46（7）: 1-9.
[3] 蓝航，陈东科，毛德兵．我国煤矿深部开采现状及灾害防治分析[J]．煤炭科学技术，2016，44（1）：39-46. LAN Hang, CHEN Dongke, MAO Debing. Current status of deep mining and disaster prevention in China[J]. Coal Science and Technology, 2016, 44（1）: 39-46.
[4] 姬长发，许多，李美晨，等.相变蓄冷材料包间隙对冷却服热湿传递特性的影响[J].煤矿安全，2020，51（8）：239-244. JI Changfa, XU Duo, LI Meichen, et al. Influence of gap of phase change cold storage materials on heat and moisture transmission characteristics of cooling suit[J]. Safety in Coal Mines, 2020, 51（8）: 239-244.
[5] 姚韦靖，庞建勇.我国深部矿井热环境研究现状与进展[J].矿业安全与环保，2018，45（1）：107-111. YAO Weijing, PANG Jianyong. The status and progress of the research on thermal environment of deep mine in China[J]. Mining Safety & Environmental Protection, 2018, 45（1）: 107-111.
[6] 李孜军，徐宇，贾敏涛，等.深部矿井岩层地热能协同开采治理热害数值模拟[J].中南大学学报（自然科学版），2021，52（3）：671. LI Zijun, XU Yu, JIA Mintao, et al. Numerical simulation on heat hazard control by collaborative geothermal exploitation in deep mine[J]. Journal of Central South University（Science and Technology）, 2021, 52（3）: 671.
[7] 彭涛，樊敏，吴佩，等.淮南朱集井田现今地温场特征及其影响因素分析[J].西安科技大学学报，2016，36（2）：243-248. PENG Tao, FAN Min, WU Pei, et al. Distribution characteristics and influential factors of present geo-temperature field in Zhuji Mine Area of Huainan[J]. Journal of Xi’an University of Science and Technology, 2016, 36（2）: 243-248.
[8] 安启启，徐刚，杨杰，等.高温高湿环境下人体热生理模型的检验及应用[J].西安科技大学学报，2021，41（2）：253-261. AN Qiqi, XU Gang, YANG Jie, et al. Examination and application of human thermo physiological model in high temperature and humidity environment[J]. Journal of Xi’an University of Science and Technology, 2021, 41（2）: 253-261.
[9] 吴建松，付明，童兴，等．高温高湿矿井作业人员热应激评价[J]．煤炭科学技术，2015，43（9）：30-36. WU Jiansong, FU Ming, TONG Xing, et al. Evaluation on heat strain of mine worker in high temperature and high humidity mine[J]. Coal Science and Technology, 2015, 43（9）: 30-36.
[10] 聂兴信，王廷宇，孙锋刚，等.高温矿井热湿环境对人体机能的影响[J].金属矿山，2020（4）：186-193. NIE Xingxin, WANG Tingyu, SUN Fenggang, et al. Influence of heat and humidity environment on function of human body in high temperature mine[J]. Metal Mine, 2020（4）: 186-193.
计量
- 文章访问数: 36
- HTML全文浏览量: 0
- PDF下载量: 4
下载:
