Simulation study on heat insulation and cooling of deep shaft tunnel with different heat insulation materials

doi:10.16265/j.cnki.issn1003-3033.2024.02.0748

Abstract

Abstract:

To solve the problem of heat damage caused by the continuous extension of coal mining depth, and to reveal the distribution characteristics of the temperature field in the deep-shaft roadway, five kinds of mining thermal insulation materials were selected to carry out the study of thermal insulation and cooling in the deep-shaft roadway, to analyze the effects of different thicknesses of the thermal insulation layer and different initial temperatures of the peripheral rock on the temperature field of the peripheral rock, the radius of the heat-regulating circle, and the temperature change of the wind flow in the roadway, and to analyze the evolution characteristics of the peripheral rock temperature field in the vicinity of the thermal insulation layer. The results show that foam heat-insulating concrete has the best heat-insulating performance and the lowest economic cost. The selection of lower thermal conductivity of the insulation layer helps to improve the thermal insulation effect of the insulation layer, and 5-10 cm is the best thickness of insulation layer, temperature field is consistent with the spatial distribution of peripheral rock layer, anchor spraying layer, and insulation layer, thermal conductivity of insulation material is negatively correlated with the tunnel peripheral rock temperature gradient, thickness of insulation layer, and temperature of the original rock are positively correlated with the tunnel peripheral rock temperature gradient, and thickness and temperature of insulation layer have a significant influence on radius of heat-regulating circle. Temperature has a certain degree of influence on radius of heat-regulating circle, compared with the roadway without a heat-insulating layer, roadway heat-insulating effect of cooling effect is significant.

Key words: insulation materials, tunnel airflow, temperature field of surrounding rock, temperature gradient, heat regulating ring, thermal insulation effect

CLC Number:

X936

YOU Bo, CUI Daxiong, LIU Heqing, LU Yi, YANG Xinyu. Simulation study on heat insulation and cooling of deep shaft tunnel with different heat insulation materials[J]. China Safety Science Journal, 2024, 34(2): 153-160.

Figures/Tables 11

Fig.1

Fig.2

Tab.1

Fig.3

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

Fig.9

Fig.10

References 19

[1]	何满潮, 郭平业. 深部岩体热力学效应及温控对策[J]. 岩石力学与工程学报, 2013, 32(12): 2377-2393.
	HE Manchao, GUO Pingye. Deep rock mass thermodynamic effect and temperature control measures[J]. Chinese Journal of Rock Mechanics and Engineering, 2013, 32(12): 2377-2393.
[2]	姚娜. 高地热金属矿山井巷通风降温数值模拟研究[D]. 唐山: 华北理工大学, 2016.
	YAO Na. Numerical simulation of ventilation and cooling in the mine shaft of high geothermal metal mine[D]. Tangshan: North China University of Science and Technology, 2016.
[3]	徐宇, 李孜军, 贾敏涛, 等. 深部矿井热害治理协同地热能开采构想及方法分析[J]. 中国有色金属学报, 2022, 32(5):1515-1527.
	XU Yu, LI Zijun, JIA Mintao, et al. Conceptualization and method for synergetic mining of geothermal energy as solution to heat hazard control in deep mines[J]. The Chinese Journal of Nonferrous Metals, 2022, 32(5): 1515-1527.
[4]	程力, 张涛, 汪林红, 等. 新型矿井通风降温技术装置的试验研究[J]. 金属矿山, 2021 (2): 209-214.
	CHENG Li, ZHANG Tao, WANG Linhong, et al. Experimental study on a new type of mine ventilation and cooling device[J]. Metal Mine, 2021(2): 209-214.
[5]	游波, 毛聪, 施式亮, 等. 管路结构对矿用通风服微气候的影响研究[J]. 中国安全科学学报, 2022, 32(7): 195-204. doi: 10.16265/j.cnki.issn1003-3033.2022.07.2244
	YOU Bo, MAO Cong, SHI Shiliang, et al. Research on influence law of pipeline structure of mine ventilation clothing on interior space microclimate[J]. China Safety Science Journal, 2022, 32(7): 195-204. doi: 10.16265/j.cnki.issn1003-3033.2022.07.2244
[6]	刘晓明, 罗周全, 夏长念, 等. 深井高温矿山热害控制新技术[J]. 安全与环境工程, 2006, 13(1): 85-88.
	LIU Xiaoming, LUO Zhouquan, XIA Changnian, et al. The new technology of heat-harm control in hight-temperature deep mine[J]. Safety and Environmental Engineering, 2006, 13(1):85 -88.
[7]	亓玉栋, 程卫民, 于岩斌, 等. 我国煤矿高温热害防治技术现状综述与进展[J]. 煤矿安全, 2014, 45(3): 167-174.
	QI Yudong, CHENG Weimin, YU Yanbin, et al. Status summarization and progress of heat hazard control technology in coal mine of China[J]. Safety in Coal Mines, 2014, 45(3): 167-174.
[8]	郭文兵, 涂子兴, 姚荣, 等. 深井煤矿巷道隔热材料研究[J]. 煤炭科学技术, 2003, 31(12): 23-27.
	GUO Wenbing, TU Zixing, YAO Rong, et al. Research on isolation material for deep mine road way[J]. Coal Science and Technology, 2003, 31(12) : 23-27.
[9]	张源. 高地温巷道围岩非稳态温度场及隔热降温机理研究[D]. 徐州: 中国矿业大学, 2013.
	ZHANG Yuan. Transient temperature field of surrounding rock of the high geothermal roadway and its heat control mechanism by heat insulation[D]. Xuzhou: China University of Mining and Technology, 2013.
[10]	张希, 喻晓丽, 黄冲红, 等. 大红山铜矿西矿段巷道喷涂隔热材料降温效果的数值模拟分析[J]. 矿业研究与开发, 2022, 42(11):158-162.
	ZHANG Xi, YU Xiaoli, HUANG Chonghong, et al. Numerical simulation analysis on the cooling effect of spraying thermal insulation material to roadway in the west of Dahongshan copper mine[J]. Mining Research and Development, 2022, 42(11): 158-162.
[11]	薛韩玲, 彭俊杰, 郭佩奇, 等. 高温矿井硅橡胶/中空玻璃微珠围岩隔热试验研究[J]. 西安科技大学学报, 2022, 42(3): 493-500.
	XUE Hanling, PENG Junjie, GUO Peiqi, et al. Experimental study on thermal insulation characteristics of silicone rubber/hollow glass beads used for surrounding rock in high temperature mine[J]. Journal of Xi'an University of Science and Technology, 2022, 42(3): 493-500.
[12]	吴栋. 高地温巷道喷浆隔热机理的实验研究[D]. 徐州: 中国矿业大学, 2019.
	WU Dong. Experimental study on spraying insulation mechanism of high ground temperature roadway[D]. Xuzhou: China University of Mining and Technology, 2019.
[13]	REN Ting, WANG Zhongwei, ZHANG Jian. Improved dust management at a longwall top coal caving (LTCC) face:a CFD modelling approach[J]. Advanced Powder Technology, 2018, 29(10): 2368-2379. doi: 10.1016/j.apt.2018.06.016
[14]	张晓明, 黄亮, 王永军, 等. 条带潮湿巷道模型风流温湿度数值模拟研究[J]. 中国安全科学学报, 2020, 30(1): 21-26. doi: 10.16265/j.cnki.issn1003-3033.2020.01.004
	ZHANG Xiaoming, HUANG Liang, WANG Yongjun, et al. Numerical simulation of airflow temperature and humidity for partly wet roadway model[J]. China Safety Science Journal, 2020, 30(1): 21-26. doi: 10.16265/j.cnki.issn1003-3033.2020.01.004
[15]	陈桂义. 深部矿井巷道围岩与风流温度场数值模拟[D]. 湘潭: 湖南科技大学, 2014.
	CHEN Guiyi. Numerical simulation of temperature field of surrounding rock and airflow in deep mine[D]. Xiangtan: Hunan University of Science and Technology, 2014.
[16]	胡冬梅. 隔热材料对深部开采巷道内环境温度的影响研究[D]. 葫芦岛: 辽宁工程技术大学, 2021.
	HU Dongmei. Study on the influence of heat insulation material on the ambient temperature in deep mining roadway[D]. Huludao: Liaoning Technical University, 2021.
[17]	庞建勇, 姚韦靖. 深井煤矿高温巷道新型隔热材料试验研究[J]. 矿业研究与开发, 2016, 36(2): 76-80.
	PANG Jianyong, YAO Weijing. Experimental research on a new thermal insulating material for high-temperature roadway in deep coal mine[J]. Mining Research and Development, 2016, 36(2) : 76-80.
[18]	张树光, 常剑, 王宏伟. 高温巷道调热圈特性及对隔热支护结构的影响[J]. 煤田地质与勘探, 2019, 47(5): 179-185.
	ZHANG Shuguang, CHANG Jian, WANG Hongwei. Characteristics of heat-adjusting ring and the influence of thermal insulation support structure in high-temperature roadway[J]. Coal Geology & Exploration, 2019, 47(5): 179-185.
[19]	宋东平, 周西华, 白刚, 等. 高温矿井主动隔热巷道围岩温度场分布规律研究[J]. 煤炭科学技术, 2017, 45(12): 107-113.
	SONG Dongping, ZHOU Xihua, BAI Gang. et al. Study on temperature field distribution law of surrounding rock in active thermal insulated roadway of high temperature mine[J]. Coal Science and Technology, 2017, 45(12) : 107-113.

类别	材料	密度/(kg·m^-3)	比热容/(J·kg^-1·K^-1)	导热系数/(W·m^-1·K^-1)
围岩	砂岩	2 580	840	2.431
隔热层	矿渣保温材料	1 783	1 220	0.724 9
	玻化微珠砂浆	1 560	1 370	0.242
	普通保温砂浆	800	1 050	0.390
	蛭石砂浆	1 120	1 050	0.308 3
	泡沫隔热混凝土	602	1 050	0.190
锚喷层	普通混凝土	2 400	970	1.850