Gold Science and Technology
img

Wechat

Adv. Search
Online Submission Peer Review Office Work

Gold Science and Technology ›› 2024, Vol. 32 ›› Issue (1): 63-74.doi: 10.11872/j.issn.1005-2518.2024.01.092

• Mining Technology and Mine Management • Previous Articles     Next Articles

Influence of Forced-Exhaust Mixed Ventilation Parameters on the Cooling Effect of Artificial Cooling in High-temperature Blind Roadway

Jielin LI1(),Yiliang LIU1,Yupu WANG2,Zaili LI2,Keping ZHOU1,Chunlong CHENG1   

  1. 1.School of Resources and Safety Engineering, Central South University, Changsha 410083, Hunan, China
    2.Yuxi Mining Co. , Ltd. , Yuxi 653100, Yunnan, China
  • Received:2023-06-19 Revised:2023-12-06 Online:2024-02-29 Published:2024-03-22

RichHTML

5

PDF (PC)

46

Abstract:

With the increasing mining depth of metal mines，the problem of high temperature damage in mines is becoming more and more serious，which has become an urgent problem to be solved in deep mining of metal mines.At present，high-temperature mine cooling technology can be divided into two categories：Non-artificial refrigeration cooling technology and artificial refrigeration cooling technology.The latter can effectively solve the cooling problem of high-temperature mines，and is widely used in high-temperature mines at home and abroad.However，a large amount of heat will be generated during the operation of the artificial cooling equipment，which is easy to cause heat accumulation，thus affect the cooling effect.Therefore，it is a reasonable and feasible method to use the local ventilation system of the mine to discharge the heat generated by the operation of the cooling equipment.The high-temperature single-headed excavation roadway on the west side of the -20 m level of the north along the vein in the west section of the Dahongshan copper mine was taken as the research object，and numerical simulations were conducted by Fluent software to investigate the effects of the vent duct height，the distance of the exhaust vent duct lagging the forced vent duct and the exhaust forced ratio on the cooling effect of artificial cooling.The results show that the height of forced vent duct has an obvious influence on the cooling effect，and the optimal height is 1.0 m.The cooling effect is the best when the height of exhaust vent duct is equal to that of forced vent duct，and the optimal height is 1.0 m.The distance between exhaust vent duct and forced vent duct is too large，which is not conducive to cooling，and the optimal distance is 5.0 m.The exhaust forced ratio is too small or too large to form a good wind circulation in the driving drift，and the cooling effect is poor，the optimal exhaust forced ratio is 2.0.The research results can provide guidance for the selection of artificial cooling parameters for high temperature mine ventilation assisted cooling.

Key words: high temperature damage, tunneling roadway, numerical simulation, mixed ventilation, artificial cooling, ventilation parameters

CLC Number: 

  • TD724

Fig.1

Side view of artificial cooling equipment and its actual installation diagram in the tunneling roadway"

Fig.2

Physical model of high-temperature blind tunneling roadway"

Table 1

Boundary condition parameters of physical model"

边界边界类型设定数值
人工制冷设备冷风出口速度进口速度8.6 m/s，温度22 ℃
人工制冷设备热风出口速度进口速度6.4 m/s，温度50 ℃
压入式风筒出风口速度进口速度6.0 m/s，温度36 ℃
巷道出口压力出口压力0 Pa
人工制冷设备冷风进风口压力出口压力-10 Pa
巷道围岩壁面温度42 ℃，导热系数3.468 W/（m·K）
风筒壁面导热系数0.23 W/（m·K）

Table 2

Numerical calculation scheme"

数值计算变量工况设置
压入式风筒高度H10.5 m、1.0 m、1.5 m、2.0 m
抽出式风筒高度H20.5 m、1.0 m、1.5 m、2.0 m
抽出式风筒滞后压入式风筒距离D5.0 m、9.0 m、13.0 m、17.0 m
抽压比R0.5、1.0、2.0、3.0

Fig.3

Layout of temperature monitoring line in numerical simulation"

Fig.4

Field test situation and numerical simulation model"

Fig.5

Comparison of simulated and measured temperature values of three measurement points"

Fig.6

Average temperature of each section under different heights of forced air duct"

Fig.7

Cloud maps of temperature distribution of different sections when H1=1.0 m"

Fig.8

Temperature change of each linear region from L1 to L5 when H1=1.0 m"

Fig.9

Average temperature of each section under different exhaust duct heights when H1=1.0 m"

Fig.10

Average temperature of each section under the best working conditions of forced and mixed ventilation"

Fig.11

Cloud maps of temperature distribution of different sections in the cooling space of the tunneling roadway under the best working conditions of forced ventilation"

Fig.12

Cloud maps of temperature distribution of different sections in the cooling space of the tunneling roadway under the best working conditions of mixed ventilation"

Fig.13

Temperature change of each linear region from L1 to L5 when H2=1.0 m"

Fig.14

Average temperature of each section under different distances of the exhaust duct lagging the forced duct"

Fig.15

Temperature distribution clouds of X=1.7 m when D=5.0 m and D=9.0 m"

Fig.16

Average temperature of each section under different exhaust forced ratios"

Bao Jianqiao， Guo Hong， Shi Minghui，2022.Improved algorithm of the hydrodynamic bearing based on FLUENT dynamic mesh［J］.Modern Manufacturing Engineering，（7）：104-107，182.
Cai Meifeng， Xue Dinglong， Ren Fenhua，2019.Current status and development strategy of metal mines ［J］.Chinese Journal of Engineering，41（4）：417-426.
Chen Caixian， Huang Shouyuan， Li Gang，et al，2011.Numerical simulation study on thermal environment in a blind heading with combined local ventilation［J］.Mining Safety and Environmental Protection，38（4）：4-7，93.
Chen Hao，2019.Study on Cooling Effect and Thermal Comfort of Water Injection and Ventilation in Coal and Rock Mass of Deep Mine ［D］.Xiangtan：Hunan University of Science and Technology.
Chu Yanhao， Liu Jingxian， Chang Deqiang，et al，2020.Experimental study on the mine geothermal hazard control based on heal transfer by heat pipe［J］.Metal Mine，49（1）：108-114.
Du Cuifeng， Xu Zhe， Tang Zhanxin，et al，2016.Numerical simulation of ventilation and cooling in excavation roadway and analysis of influencing factors［J］.Metal Mine，45（2）：151-155.
Gong Jian， Hu Nailian， Lin Ronghan，et al，2015.Numerical simulation on dust migration law in excavation roadway with forced ventilation［J］.Nonferrous Metals（Mining Section），67（1）：65-68.
Guo Duiming， Li Guoqing， Hou Jie，et al，2022.Optimization of local ventilation parameters of deep mine excavation roadway based on FLUENT ［J］.Gold Science and Technology，30（5）：753-763.
Hou Jiangli， Wu Lingling， Luo Xuzhao，et al，2020.A cooling and heat-collecting experimental system in deep mine based on direct expansion ground-coupled heat pump ［J］.Nonferrous Metals Engineering，10（3）：62-68.
Li J L， Yu X L， Huang C H，et al，2022.Research on the mobile refrigeration system at a high temperature working face of an underground mine［J］.Energies，15（11）：1-15.
Li Jielin， Cheng Chunlong， Zhou Keping，et al，2022.Study on optimization of artificial refrigeration cooling effect in high-temperature blind roadway［J］.Journal of Safety Science and Technology，18（10）：238-244.
Li Jielin， Yu Xiaoli， Huang Chonghong，et al，2021.Numerical simulation of ice cooling in heading face of high-temperature mine［J］.Journal of Safety Science and Technology，17（8）：97-103.
Li Yong， Chu Zhaoxiang， Ji Jianhu，et al，2014.Numerical simulation of airflow and temperature field in excavation roadway［J］.Coal Science and Technology，42（Supp.1）：142-145，148.
Li Zijun， Xu Yu， Jia Mintao，et al，2021.Numerical simulation on heat hazard control by collaborative geothermal exploitation in deep mine ［J］.Journal of Central South University（Science and Technology），52（3）：671-680.
Liu G L， Liu H Q， Chen F，et al，2022a.The effect of environmental variables and metabolic rate on physiological parameters in a hot and humid mine［J］.Science and Technology for the Built Environment，28（4）：451-466.
Liu J J， Zhang Y， Chen S Q，et al，2022b.Simulation study of gas explosion propagation law in coal mining face with different ventilation modes［J］.Frontiers in Energy Research，10：1-13.
Luo Yongdong， Wang Haining， Zhang Yingbin，2020.Research and application of cooling technology in roadway driving in the mine at high temperature ［J］.Nonferrous Metals Science and Engineering，11（1）：85-91.
Song Dongping， Zhou Xihua， Li Jingyang，et al，2017.Liquid carbon dioxide phase-change refrigeration and cooling technology of high temperature mine ［J］.Coal Science and Technology，45（10）：82-87.
Wang W H， Zhang C F， Yang W Y，et al，2019.In situ measurements and CFD numerical simulations of thermal environment in blind headings of underground mines［J］.Processes，7（5）：1-21.
Xin S， Wang W H， Zhang N N，et al，2021.Comparative studies on control of thermal environment in development headings using force/exhaust overlap ventilation systems ［J］.Journal of Building Engineering，38：1-14.
Xin Song， Liu Shangxiao， Zhang Xiao，et al，2020.Influence of different ventilation parameters on cooling of driving face［J］.Safety in Coal Mines，51（10）：112-117.
Yao W J， Pang J Y， Ma Q Y，et al，2021.Influence and sensitivity analysis of thermal parameters on temperature field distribution of active thermal insulated roadway in high temperature mine［J］.International Journal of Coal Science and Technology，8（1）：47-63.
Zhu Hailiang， Liu Jingxian， Chang Deqiang，et al，2020.Experimental study on deep mine geothermal hazard control based on heat pump and power heat pipe［J］.Metal Mine，49（1）：101-107.
鲍建桥，郭红，石明辉，2022.基于FLUENT动网格的动压轴承特性改进算法［J］.现代制造工程，（7）：104-107，182.
蔡美峰，薛鼎龙，任奋华，2019.金属矿深部开采现状与发展战略［J］.工程科学学报，41（4）：417-426.
陈才贤，黄寿元，李刚，等，2011.混合式局部通风独头巷道热环境数值模拟研究［J］.矿业安全与环保，38（4）：4-7，93.
陈浩，2019.深部矿井煤岩体注水与通风方式下降温效果与热舒适研究［D］.湘潭：湖南科技大学.
初砚昊，柳静献，常德强，等，2020.基于热管输热的矿井地热危害控制试验研究［J］.金属矿山，49（1）：108-114.
杜翠凤，徐喆，唐占信，等，2016.掘进巷道通风降温的数值模拟及影响因素分析［J］.金属矿山，45（2）：151-155.
龚剑，胡乃联，林荣汉，等，2015.掘进巷道压入式通风粉尘运移规律数值模拟［J］.有色金属（矿山部分），67（1）：65-68.
郭对明，李国清，侯杰，等，2022.基于FLUENT的深井掘进巷道局部通风参数优化［J］.黄金科学技术，30（5）：753-763.
侯江丽，伍玲玲，罗旭照，等，2020.基于直膨式热泵技术的深井集热降温实验系统［J］.有色金属工程，10（3）：62-68.
李杰林，程春龙，周科平，等，2022.高温独头巷道人工制冷降温效果的优化研究［J］.中国安全生产科学技术，18（10）：238-244.
李杰林，喻晓丽，黄冲红，等，2021.高温矿井掘进工作面冰块降温数值模拟研究［J］.中国安全生产科学技术，17（8）：97-103.
李勇，褚召祥，姬建虎，等，2014.掘进巷道风流流场和温度场数值模拟［J］.煤炭科学技术，42（增1）：142-145，148.
李孜军，徐宇，贾敏涛，等，2021.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），52（3）：671-680.
罗勇东，王海宁，张迎宾，2020.矿井高温掘进巷道降温技术研究及应用［J］.有色金属科学与工程，11（1）：85-91.
宋东平，周西华，李景阳，等，2017.高温矿井液态CO2相变制冷降温技术［J］.煤炭科学技术，45（10）：82-87.
辛嵩，刘尚校，张逍，等，2020.不同通风参数对掘进工作面降温的影响［J］.煤矿安全，51（10）：112-117.
朱海亮，柳静献，常德强，等，2020.热泵与动力热管复合的深井热害控制试验研究［J］.金属矿山，49（1）：101-107.
[1] Kaibin WANG,Qin LIU,Hongtao WANG. Study on the Load Transfer Characteristics and Influence Factors of Anchora-ge Segment of Pressure-type Anchor Cable [J]. Gold Science and Technology, 2024, 32(1): 123-131.
[2] Zefeng XU,Xiuzhi SHI,Rendong HUANG,Wenzhi DING,Xin CHEN. Study on Filling Pipeline Optimization Based on Full Pipe Transportation [J]. Gold Science and Technology, 2024, 32(1): 160-169.
[3] Honglu FEI, Hainan JI, Jie SHAN. Optimization and Comparative Experimental Study of Charge Structure of Water Medium Interval on Open-air Step [J]. Gold Science and Technology, 2023, 31(6): 930-943.
[4] Wenfa SHAN, Xiancheng MAO, Zhankun LIU, Hao DENG, Jin CHEN, Wei ZHANG, Haizheng WANG, Xin YANG. Numerical Simulation of Metallogenic Processes of Dayingezhuang Gold Deposit in Jiaodong Peninsula and Its Prospecting Significance [J]. Gold Science and Technology, 2023, 31(5): 707-720.
[5] Yu ZHANG, Wenji WANG, Jiaqi SUN, Yonggang XIAO. Fracture Performances of Bedding Structure Slate Under Dynamic Loading [J]. Gold Science and Technology, 2023, 31(5): 803-810.
[6] Yanan ZHAO, Yihang ZHAO, Zhongming JIANG, Hongmin ZHAO. Preliminary Study on Static and Dynamic Stability of Canister for High-level Radioactive Nuclear Waste Disposal Based on Discrete Element Method [J]. Gold Science and Technology, 2023, 31(4): 592-604.
[7] Duiming GUO,Guoqing LI,Jie HOU,Nailian HU. Optimization of Local Ventilation Parameters of Deep Mine Excavation Roadway Based on FLUENT [J]. Gold Science and Technology, 2022, 30(5): 753-763.
[8] Heng MA,Jiayi GAO,Shihu LI,Ke GAO. Influence of Jet Angle of Twin Parallel Air Curtains on the Tunnel Airflow [J]. Gold Science and Technology, 2022, 30(5): 743-752.
[9] Zhanxing ZHOU,Kewei LIU,Xudong LI,Xiaohui HUANG,Sizhou MA. Numerical Simulation of Dynamic Response of Tunnel Lining Under Oil Tank Explosion [J]. Gold Science and Technology, 2022, 30(4): 612-622.
[10] Weihua WANG,Yang LIU,Liwei ZHANG,Henggen ZHANG. Numerical Simulation of Homogeneous Rock Mass Damage Caused by Two-hole Simultaneous Blasting Based on RHT Model [J]. Gold Science and Technology, 2022, 30(3): 414-426.
[11] Lingzhi ZHONG,Xiancheng MAO,Zhankun LIU,Keyan XIAO,Chuntan WANG,Wu CHEN. Ore-controlling Effect of Structural Geometry Features in the Sanshandao Gold Belt，Jiaodong Peninsula，China： Insights from Numerical Simulation [J]. Gold Science and Technology, 2022, 30(3): 352-365.
[12] Liqiang CHEN,Guoyan ZHAO,Yang LI,Wenjie MAO,Chengkai DANG,Boyang FANG. Deep Roadway Support and Its Effect Evaluation Under Excavation Unloading Disturbance [J]. Gold Science and Technology, 2022, 30(3): 438-448.
[13] Xuan FU,Linqi HUANG,Jiangzhan CHEN,Yangchun WU,Xibing LI. Meeting the Challenge of High Geothermal Ground Temperature Environ-ment in Deep Mining—Research on Geothermal Ground Temperature Simula-tion Platform of Rock True Triaxial Testing Machine [J]. Gold Science and Technology, 2022, 30(1): 72-84.
[14] Xingxin NIE,Zhewei LIU,Zhaoxiang GAO,Ping CHENG. Influence of Combined Compression Cooling Air Duct Arrangement on the Cooling Effect in High-Temperature Metal Mine Roadway Excavation [J]. Gold Science and Technology, 2022, 30(1): 85-92.
[15] Dan HUANG,He CHEN,Zhijie ZHENG. Model of the Height of Overburden Fracture Zone Based on Void Conservation [J]. Gold Science and Technology, 2021, 29(6): 843-853.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!

©2018 Gold Science and Technology　

Telephone：0931-8277791　

E-mail: hjkx@lzb.ac.cn Postcode：730000　

Powered by Beijing Magtech Co. Ltd

陇ICP备17001318号-1