刘玉姣,高科,刘剑.巷道棚子支护对围岩传热影响研究[J].有色金属工程,2018,8(6):.
巷道棚子支护对围岩传热影响研究
Study on effect of shed support on heat transfer of surrounding rock in roadway of coal mine
投稿时间:2017-07-22  修订日期:2017-10-10
DOI:
中文关键词:  巷道  棚子支护  围岩  传热
英文关键词:Roadway  Shed support  Surrounding rock  Heat transfer
基金项目:国家自然科学基金(51404126, 51574142),辽宁省教育厅科学研究项目资助(LYJL003)。#$NL
        
作者单位
刘玉姣 辽宁工程技术大学 安全科学与工程学院
高科 辽宁工程技术大学 安全科学与工程学院
刘剑 辽宁工程技术大学 安全科学与工程学院
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中文摘要:
      围岩散热在矿井热源中占有很大的比例,而棚子支护对巷道围岩传热产生一定的影响。利用数值计算方法,采用湍流模型Standard k-e,分析了在雷诺数25860~689600下棚子支护巷道的湍流传热、流阻及对巷道风流的影响。结果表明,棚子支护增大对流换热强度,加大壁面向巷道空间散热,随雷诺数的增大呈线性增强;巷道棚子支护扩大了温度梯度,使距离壁面0.75m处温度便显著增加,压差随雷诺数呈指数函数增加,而无支护压差呈直线增加。
英文摘要:
      The heat dissipation of surrounding rock has a large proportion of mine heat source, while shed support has a certain effect on heat transfer of surrounding rock in roadway of coal mine. The heat transfer and flow structure characteristics have been obtained and compared with each other for the reynolds numbers of 25860~689600 by using numerical simulation with Standard k-e turbulence model. The study shows that the heat transfer intensity increases due to shed support, and heat radiation from wall to roadway space increases, which increases linearly with the increase of Reynolds number. Temperature gradient is expanded by roadway supporting, so that the temperature increases 0.75m away from the wall significantly. The pressure difference increases exponentially with the Reynolds number when there is shed support in roadway of coal mine, but the pressure difference increases linearly shed support doesn’t exist.
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