img

Wechat

Adv. Search

Gold Science and Technology ›› 2022, Vol. 30 ›› Issue (1): 85-92.doi: 10.11872/j.issn.1005-2518.2022.01.100

• Mining Technology and Mine Management • Previous Articles     Next Articles

Influence of Combined Compression Cooling Air Duct Arrangement on the Cooling Effect in High-Temperature Metal Mine Roadway Excavation

Xingxin NIE(),Zhewei LIU(),Zhaoxiang GAO,Ping CHENG   

  1. School of Resources Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,Shaanxi,China
  • Received:2021-07-26 Revised:2021-10-07 Online:2022-02-28 Published:2022-04-25
  • Contact: Zhewei LIU E-mail:niexingxin@126.com;438520732@qq.com

Abstract:

In order to quantitatively study the influence of the equipment layout on the cooling effect of the high-temperature driving roadway in the dual-pressure pumping mixed ventilation,the Fluent computational fluid dynamic(CFD)software was used to carry out a numerical simulation study on the ventilation cooling of the driving roadway.Firstly,the three-dimensional model of dual press-in mixed ventilation was established,and the boundary conditions and solver parameters of the model were set by Fluent software.Then,three groups of press-in air ducts 2 were set to conduct comparison experiments at different layout positions for numerical simulation.Finally,the temperature field distribution of the driving roadway under the action of dual-injection pumping and mixed ventilation and cooling was analyzed,and the temperature distribution law in the roadway was quantified when the pressure-in air duct 2 is arranged in different positions.The research results show that the dual-injection mixed ventilation can effectively treat the key treatment areas with the most active heat exchange within 50 m of the excavation roadway.The temperature field in the horizontal direction shows that the temperature on the pressure side of the tunnel from the outlet of the compressed air duct 2 is lower than that on the suction side,and the temperature on the suction side of the roadway is gradually lower after the air duct 1 is compressed. The temperature field of the roadway section shows that the temperature distribution at different heights of the roadway at different sections is different,and the temperature difference at different heights of the roadway is larger when it is close to the section of the forced air duct 2,the temperature in the upper and lower positions of the tunnel is lower and the temperature in the middle position is higher.The arrangement position of the press-in air duct 2 in the dual press-in mixed ventilation directly determines the temperature distribution in the roadway.When the press-in air duct 2 is arranged at 30 m from the driving surface,the temperature within 30 m of the driving roadway is stable at about 26 ℃.When the air inlet duct 2 is arranged at a distance of 50 m,although the temperature within 50 m of the driving roadway fluctuates by about 1 ℃,the overall value remains below 28 ℃ to meet the operation requirements.When the air duct 2 is arranged at 70 m away from the driving surface,the temperature fluctuation range in the driving roadway is relatively large and the temperature exceeds the limit in a wide range.At this time, the cooling effect of dual press-in mixed ventilation basically fails.The position of the press-in air duct 2 can be flexibly arranged under the appropriate conditions of the cooling and air supply parameters to meet the cooling requirements of long-distance roadways.The air temperature change law of the driving roadway obtained in the experiment in this paper can provide reference for the research of other ventilation cooling systems under similar conditions.

Key words: double press-in mixed ventilation, driving roadway, heat damage, computational fluid dynamic (CFD), temperature field, air duct layout position

CLC Number: 

  • TD727

Fig.1

Three-dimensional model of double press-in mixed ventilation"

Fig.2

Schematic diagram of the position of the double press-in mixed ventilation duct"

Table 1

Condition setting"

边界条件设置类型
压入风筒VELOCITY-INLET
抽出风筒VELOCITY-INLET
巷道入口PRESSURE-OUT
送风温度/K295.15(22 ℃)
巷道环境初始温度/K307.15(34 ℃)
围岩壁面温度/K311.15(38 ℃)
围岩厚度/m1.5

Table 2

Solver parameters"

参数名称设置类型
求解器非稳态求解器
时间20 min
湍流模式k-ε模型
能量方程
压力速度耦合方式SIMPLEC
收敛标准0.001

Table 3

Comparison scheme"

指标方案1方案2方案3
压入风筒2距掘进面距离/m305070
送风温度/℃222222

Fig.3

Temperature field distribution nephogram of 1.5 m horizontal height in roadway"

Fig.4

Distribution nephogram of temperature field"

Fig.5

Key monitoring areas for cooling effect"

Fig.6

Temperature of roadway monitoring points under different air duct layouts"

Chorowski M, Gizicki W, Reszewski R,2012.Air condition system for copper mine based on triseneration system[J].Journal of the Mine Ventilation Society of South Africa,65(2):20-24.
Du Cuifeng, Xu Zhe, Tang Zhanxin, al et,2016.Numerical simulation of ventilation and cooling in excavation roadway and analysis of influencing factors[J].Metal Mine,45(2):151-155.
Filek K, Nowak B,2006.Calorific effect in evaporator from mine compression refrigerator with different refrigerants [J].Archives of Mining Sciences,51(2):163-180.
Gong Jian, Hu Nailian, Lin Ronghan, al et,2014.Numerical simulation of dust distribution with far-pressing-near-absorption ventilation in an excavation roadway of high-altitude mine[J].Metal Mine,43(12):203-208.
Guo Pingye, Zhu Yanyan,2011.Back-analysis algorithm of cooling load in deep mines [J].Journal of Mining & Safety Engineering,28(3):483-487.
He Manchao, Xu Min,2008.Research and development of HEMS coolings system and heat-harm control in deep mine [J].Chinese Journal of Rock Mechanics and Engineering,27(7):1353-1361.
Kong Demeng, Meng Qinghui, Shi Mingchen, al et,2012.The dissemination rule of blasting shock-wave in subway tunnel [J].Chinese Journal of Underground Space and Engineering,8(1):48-55,64.
Li Junsheng,2014.Research on Ventilation Mode of High Temperature Tunnel Face Temperature Drop Effect[D].Chengdu:Southwest Jiaotong University.
Liu Na, Song Hui, Zhang Yuliang, al et,2016.Design and application of automatic cooling system in driving face[J].Coal Engineering,48(6):23-25.
Nie Xingxin, Wang Tingyu, Sun Fenggang, al et,2020.Influence of heat and humidity environment on function of human body in high temperature mine[J].Metal Mine,49(4):186-193.
Qi Yudong,2014.Research on the Prediction of Dynamic Cooling Load and Control Technology in High Temperature Coal[D].Qingdao:Shandong University of Science and Technology.
Shi B B, Ma L J, Dong W, al et,2015.Application of a novel liquid nitrogen control technique for heat stress and fire prevention in underground mines[J].Journal of Occupational and Environmental Hygiene,12(8):168-177.
Tian Long, Zhou Zhiyong, Chen Jianhong,2020.Numerical simulation of temperature distribution in mining area of high temperature mine with auxiliary ventilation[J].Gold Science and Technology,28(1):61-69.
Wei Cheng, Chu Zhaoxinag, Zhang Peng, al et,2018.Heat and moisture source distribution determination and analysis of long distance excavation roadway[J].Safety in Coal Mines,49(1):202-205,209.
Wilson RW, Pieters A,2011.Design and construction of a surface air cooling and refrigeration installation at a South African mine [J].Journal of the Mine Ventilation Society of South African,64(4):14-18.
Wu Chao,2008.Mine Ventilation and Air Conditioning[M].Changsha:Central South University Press.
Xin Song, Liu Shangxiao, Zhang Xiao, al et,2020.Influence of different ventilation parameters on cooling of driving face [J].Safety in Coal Mines,51(10):112-117.
Zhang Chao, Tang Shichuan, Li Dongming, al et,2015.Experimental study of the heavy-duty working condition and intensified fatigue grade for the workmen under high temperature and great humidity environment[J].Journal of Safety and Environment,15(4):176-180.
Zhang Ruiming, Wei Dingyi, Du Cuifeng, al et,2018.Experimental study on ventilation and cooling in excavation roadway[J].Metal Mine,47(9):171-175.
Zhang Y L, Zhang X L, Li M, al et,2019.Research on heat transfer enhancement and flow characteristic of heat exchange surface in cosine style runner[J].Heat and Mass Transfer,55(11):3117-3131.
Zhang Yongliang, Zhai Xuefeng, Lu Shouqing, al et,2020.Numerical simulation study on sectional cooling of long-distance excavation roadway in metal mine[J].China Safety Science Journal,30(9):73-79.
Zou Shenghua, Li Kongqing, Zhang Dengchun, al et,2016.On the air-partition for cooling with the heat- insulated plate [J].Journal of Safety and Environment,16(2):99-102.
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,2014.高海拔矿山掘进面长压短抽式通风粉尘分布数值模拟[J].金属矿山,43(12):203-208.
郭平业,朱艳艳,2011.深井降温冷负荷反分析计算方法[J].采矿与安全工程学报,28(3):483-487.
何满潮,徐敏,2008.HEMS深井降温系统研发及热害控制对策[J].岩石力学与工程学报,27(7):1353-1361.
孔德森,孟庆辉,史明臣,等,2012.爆炸冲击波在地铁隧道内的传播规律研究[J].地下空间与工程学报,8(1):48-55,64.
李俊生,2014.基于通风方式对高温隧道掌子面温降效果的研究[D].成都:西南交通大学.
刘娜,宋慧,张玉良,等,2016.掘进工作面自动降温系统设计与应用[J].煤炭工程,48(6):23-25.
聂兴信,王廷宇,孙锋刚,等,2020.高温矿井热湿环境对人体机能的影响[J].金属矿山,49(4):186-193.
亓玉栋,2014.高温矿井动态冷负荷预测与控制技术研究[D].青岛:山东科技大学.
田龙,周智勇,陈建宏,2020.配备辅助通风的高温矿井采掘区温度分布数值模拟[J].黄金科学技术,28(1):61-69.
魏诚,褚召祥,张鹏,等,2018.长距离掘进巷道热湿源分布的测定与分析[J].煤矿安全,49(1):202-205,209.
吴超,2008.矿井通风与空气调节[M].长沙:中南大学出版社.
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.
张超,唐仕川,李东明,等,2015.高温高湿环境下人员劳动负荷与疲劳水平试验研究[J].安全与环境学报,15(4):176-180.
张瑞明,魏丁一,杜翠凤,等,2018.掘进巷道通风降温试验研究[J].金属矿山,47(9):171-175.
张永亮,翟雪峰,卢守青,等,2020.金属矿长距离掘进巷道分段降温数值模拟研究[J].中国安全科学学报,30(9):73-79.
邹声华,李孔清,张登春,等,2016.掘进巷道隔热分流排热降温技术的理论与实践研究[J].安全与环境学报,16(2):99-102.
[1] Rui HUANG,E WU,Lin WU. Study on the Influence of Altitude on Smoke Propagation Law in Mine Roadway Fire [J]. Gold Science and Technology, 2020, 28(2): 293-300.
[2] Ruichong ZHANG,Chengyu XIE,Keping ZHOU. Study on Applicable Conditions of High Temperature Deep Well Ventilation Cooling Technology [J]. Gold Science and Technology, 2019, 27(6): 888-895.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] DU Shengjiang, WEN Hanjie, QIN Chaojian, LU Shufan, YAN Yongfeng, YANG Guangshu. Carbon-Oxygen Isotopic Characteristics and Its Significance of Sanbao Mn-Ag Deposit in Laojunshan Ore District,Southeastern Yunnan Province[J]. Gold Science and Technology, 2018, 26(3): 261 -269 .
[2] Tong PAN,Fude WANG. Preliminary Discussion on Minerogentic Series of Gold Deposits in Qinghai Province[J]. Gold Science and Technology, 2018, 26(4): 423 -430 .
[3] DAI Xingguo,FANG Xin,CHEN Zengjian,HUANG Yi. Reasonable Selection of Parameters about Full Tailings Cementation Filling of Liangshan Iron Mine[J]. Gold Science and Technology, 2015, 23(1): 74 -79 .
[4] TANG Weidong, MA Qing, WANG Zhirui. Geochemical Characteristics and Geological Significance of Stream Sediments with a Scale of 1/50 000 in Xianli Mountain Area ,Qinghai Province[J]. Gold Science and Technology, 2018, 26(3): 289 -296 .
[5] Minggui ZHENG, Jianlin ZENG. Equity Concentration and Corporate Governance Efficiency of Private Mining Companies in China[J]. Gold Science and Technology, 2020, 28(3): 380 -390 .
[6] Tingting ZHANG, Shiwei ZHI, Lijie GUO, Zhenlin WU, Junnan HAN. Research Progress of Resource Utilization of Copper-Nickel Smelting Slag[J]. Gold Science and Technology, 2020, 28(5): 637 -645 .
[7] Shixiong GAO,Guobao CHEN,Hongying YANG,Pengcheng MA. Research Progress of Antimony Removal Technology by Pretreatment of Antimony-bearing Gold Ore[J]. Gold Science and Technology, 2020, 28(6): 792 -799 .
[8] Sihong JIANG, Lili ZHANG, Yifei LIU, Gaofeng LI, Genyuan JI. Distribution Characteristics of Gold Deposits in Africa and Exploration Suggestions[J]. Gold Science and Technology, 2020, 28(4): 465 -478 .
[9] Yongchun LIU,Liguan WANG,Jiaxi WU. Optimization of Control Parameters for Underground Load-Haul-Dump Machine Based on LQR-QPSO[J]. Gold Science and Technology, 2021, 29(1): 25 -34 .
[10] Jingge SUN,Xinlei GUAN,Jie LIU,Zhongqi ZHAO. Study on Flow Temperature Denaturation of Filling Slurry[J]. Gold Science and Technology, 2021, 29(1): 147 -154 .