煤矿巷道棚子支护对围岩传热的影响研究
|
摘要
基于Standard k-e湍流模型数值分析了在雷诺数25 860~689 600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. 75 m处温度显著增加,压差随雷诺数呈指数函数增加,而无支护压差呈直线增加。
The turbulent heat transfer,flow resistance and the influence on the roadway wind flow in the shed support roadway under the Reynolds number 25 860 ~ 689 600 are analyzed by numerical calculation method using the Standard k-e turbulence model. The results show that the shed support increases the convective heat transfer intensity,and increases the wall-to-lane space heat dissipation,which increases linearly with the increase of Reynolds number. The roadway shed support expands the temperature gradient,which increases the temperature at 0. 75 m from the wall. The pressure difference increases exponentially with the Reynolds number,while the unsupported pressure difference increases linearly.
The turbulent heat transfer,flow resistance and the influence on the roadway wind flow in the shed support roadway under the Reynolds number 25 860 ~ 689 600 are analyzed by numerical calculation method using the Standard k-e turbulence model. The results show that the shed support increases the convective heat transfer intensity,and increases the wall-to-lane space heat dissipation,which increases linearly with the increase of Reynolds number. The roadway shed support expands the temperature gradient,which increases the temperature at 0. 75 m from the wall. The pressure difference increases exponentially with the Reynolds number,while the unsupported pressure difference increases linearly.
引文
[1] VON GLEHN F H,BLUHM S J. Practical aspects of the ventilation of high-speed developing tunnels in hot working environments[J]. Tunnelling and underground space technology,2000,15(4):471-475.
[2] LOWNDES I S,PICKERING S J,TWORT C T. The application of exergy analysis to the cooling of a deep UK colliery[J]. Journal South African insititute of mining and metallurgy,2004,104:381-396.
[3]罗永豪,赵阳升.煤矿井下不同粗糙度巷道内风速分布的风洞模拟[J].太原理工大学学报,2015,46(2):235-237.
[4]舍尔巴尼A H.矿井降温指南(译本)[M].北京:煤炭工业出版社,1982.
[5]周西华,单亚飞,王继仁.井巷围岩与风流的不稳定换热[J].辽宁工程技术大学学报(自然科学版),2002,21(3):264-266.
[6]岑衍强,胡春胜,侯祺棕.井巷围岩与风流间不稳定换热系数的探讨[J].阜新矿业学院学报,1987,6(3):105-114.
[7]SUN P D. A new computation method for the unsteady heat transfer coefficient in a deep mine[J]. Journal of coal science&engineering(China),1999,5(2):57-61.
[8]王义江.深部热环境围岩及风流传热传质研究[D].徐州:中国矿业大学,2010.
[9]WANG Y J,ZHOU G Q,WU L,et al. An analytical study of unsteady heat transfer in the rock surrounding a deep airway[J]. International journal of mining science and technology,2012,22(3):411-415.
[10]秦跃平,秦凤华.用差分法解算巷道围岩与风流不稳定换热准数[J].湘潭矿业学院学报,1998,13(1):6-10.
[11]高建良,何权富,张学博.矿井巷道对流换热系数的现场测定[J].中国安全科学学报,2010,20(2):100-103.
[12]程卫民,诸葛福民,周刚,等.改进动量BP算法计算围岩风流不稳定传热系数[J].煤炭科学技术,2009,(12):35-37.
[2] LOWNDES I S,PICKERING S J,TWORT C T. The application of exergy analysis to the cooling of a deep UK colliery[J]. Journal South African insititute of mining and metallurgy,2004,104:381-396.
[3]罗永豪,赵阳升.煤矿井下不同粗糙度巷道内风速分布的风洞模拟[J].太原理工大学学报,2015,46(2):235-237.
[4]舍尔巴尼A H.矿井降温指南(译本)[M].北京:煤炭工业出版社,1982.
[5]周西华,单亚飞,王继仁.井巷围岩与风流的不稳定换热[J].辽宁工程技术大学学报(自然科学版),2002,21(3):264-266.
[6]岑衍强,胡春胜,侯祺棕.井巷围岩与风流间不稳定换热系数的探讨[J].阜新矿业学院学报,1987,6(3):105-114.
[7]SUN P D. A new computation method for the unsteady heat transfer coefficient in a deep mine[J]. Journal of coal science&engineering(China),1999,5(2):57-61.
[8]王义江.深部热环境围岩及风流传热传质研究[D].徐州:中国矿业大学,2010.
[9]WANG Y J,ZHOU G Q,WU L,et al. An analytical study of unsteady heat transfer in the rock surrounding a deep airway[J]. International journal of mining science and technology,2012,22(3):411-415.
[10]秦跃平,秦凤华.用差分法解算巷道围岩与风流不稳定换热准数[J].湘潭矿业学院学报,1998,13(1):6-10.
[11]高建良,何权富,张学博.矿井巷道对流换热系数的现场测定[J].中国安全科学学报,2010,20(2):100-103.
[12]程卫民,诸葛福民,周刚,等.改进动量BP算法计算围岩风流不稳定传热系数[J].煤炭科学技术,2009,(12):35-37.