铺设隔热层对巷道降温效果的影响分析

doi:10.16265/j.cnki.issn1003-3033.2024.11.0315

中国安全科学学报 ›› 2024, Vol. 34 ›› Issue (11): 153-162.doi: 10.16265/j.cnki.issn1003-3033.2024.11.0315

铺设隔热层对巷道降温效果的影响分析

崔大雄¹(), 游波¹^,²^,³, 高科², 杨明⁴, 韩巧云¹, 陈元森¹

¹ 湖南科技大学资源环境与安全工程学院, 湖南湘潭 411201
² 矿山热动力灾害与防治教育部重点实验室, 辽宁葫芦岛 125105
³ 河南理工大学河南省瓦斯地质与瓦斯治理重点实验室-省部共建国家重点实验室培育基地,河南焦作 454003
⁴ 河南理工大学安全科学与工程学院, 河南焦作 454003

收稿日期:2024-06-10 修回日期:2024-08-21 出版日期:2024-11-28
作者简介:
崔大雄 (1999—),男,云南昭通人,硕士研究生,研究方向为矿井热害防治。E-mail: 2110949717@qq.com。
游波, 教授
高科, 教授
杨明, 教授
韩巧云, 副教授
基金资助:
国家自然科学基金(52174179); 辽宁工程技术大学矿山热动力灾害与防治教育部重点实验室基金(JSK202204); 河南省瓦斯地质与瓦斯治理重点实验室-省部共建国家重点实验室培育基地开放基金(WS2023B09)

Analysis of influence of laying heat insulation layer on cooling effect of roadway

CUI Daxiong¹(), YOU Bo¹^,²^,³, GAO Ke², YANG Ming⁴, HAN Qiaoyun¹, CHEN Yuansen¹

¹ School of Resource Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan Hunan 411201, China
² Key Laboratory of Mine Thermodynamic Disasters and Control of Ministry of Education (Liaoning Technical University), Huludao Liaoning 125105, China
³ State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo Henan 454003, China
⁴ School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo Henan 454003, China

Received:2024-06-10 Revised:2024-08-21 Published:2024-11-28

摘要/Abstract

摘要：

为解决煤矿深部开采带来的热害问题,基于ANSYS模拟软件,构建巷道隔热模型,分析不同隔热层基本参数和铺设方式对巷道壁面结构的影响,并进一步探究隔热巷道的降温效果。研究结果表明:铺设隔热层能减小围岩调热圈半径和延缓围岩散热,3种隔热层铺设方式对围岩温度场无明显影响;贴岩式隔热层铺设方式使支护层平均温度相较于无隔热层支护层温度明显降低,而贴壁式和夹心式则与之相反;增加隔热层厚度和降低隔热材料的导热系数可以增加隔热效果,7 cm为最佳隔热层厚度;入口风速或者风温过高都会影响隔热巷道的降温效果,隔热巷道适用于通风风速较低,入口风温较低,通风距离较长的高温巷道。

关键词: 隔热层, 隔热巷道, 降温效果, 围岩温度场, 温度梯度, 风流温度

Abstract:

In order to solve the heat damage issue brought by deep mining in coal mines, based on ANSYS simulation software, the roadway heat insulation model was constructed. The influence of basic parameters of different heat insulation layers and laying methods on the roadway wall structure was analyzed, and the cooling effect of the heat insulation roadway was further investigated. The results of the study show that the laying of the heat insulation layer could reduce the radius of the peripheral rock heat-regulating circle and slow down the heat dissipation of the peripheral rock, and the three ways of laying the heat insulation layer have little effect on the temperature field of the peripheral rock. Compared with the temperature of the non-insulated support layer, the average temperature of the support layer is reduced significantly by laying of the heat insulation layer in the rock-adhering type, whereas the opposite is true for wall-adhering type and the sandwich type. The increase in the thickness of the heat insulation layer and the decrease in the heat conduction coefficient of heat-insulating material could increase the heat-insulating effect, and 7cm is the optimal thickness of heat insulation layer. Excessive inlet wind speed or air temperature will affect the cooling effect of heat-insulated roadway. Heat-insulated roadway is suitable for high temperature roadway with low wind speed, low inlet air temperature and long ventilation distance.

Key words: insulation layer, roadway insulation, cooling effect, temperature field of surrounding rock, temperature gradient, airflow temperature

中图分类号:

X936

崔大雄, 游波, 高科, 杨明, 韩巧云, 陈元森. 铺设隔热层对巷道降温效果的影响分析[J]. 中国安全科学学报, 2024, 34(11): 153-162.

CUI Daxiong, YOU Bo, GAO Ke, YANG Ming, HAN Qiaoyun, CHEN Yuansen. Analysis of influence of laying heat insulation layer on cooling effect of roadway[J]. China Safety Science Journal, 2024, 34(11): 153-162.

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材料	密度/ (kg·m^-3)	导热系数/ (W·m^-1·℃^-1)	比热容/ (J·kg^-1·K^-1)	动力黏度/ (Pa·s)
巷道围岩	2 330	2.62	880	—
支护层	2 400	1.74	1 000	—
空气	1.205	0.025 9	1 005	1.81×10^-5

边界条件	参数设置
求解器	压力求解器
湍流强度	5%
求解方法	压力耦合半隐式方法
速度入口/(m·s^-1)	1
入口风温/℃	24
围岩初始温度/℃	50
壁面粗糙度常数	0.5
壁面粗糙高度/m	0.07

入口风速/ (m·s^-1)	巷道出口风流温度/℃		降幅/%
入口风速/ (m·s^-1)	隔热前	隔热后	降幅/%
1	31.40	30.15	3.89
2	28.15	27.37	2.77
3	26.88	26.33	2.04
4	26.21	25.77	1.67

入口风温/℃	巷道出口风流温度/℃		降幅/%
入口风温/℃	隔热前	隔热后	降幅/%
24	31.40	30.15	3.89
26	32.83	31.67	3.53
28	34.26	33.20	3.09
30	35.69	34.73	2.68

铺设隔热层对巷道降温效果的影响分析

Analysis of influence of laying heat insulation layer on cooling effect of roadway

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