隧道火灾烟气蔓延规律；

隧道火灾灭火救援技术；

易燃液体流淌火与爆燃；

可燃液体浸润多孔介质燃烧。

承担的相关项目：

★国家自然科学基金项目"隧道内易燃液体液气两相耦合爆燃机理及火焰传播特性研究",主持；

★国家自然科学基金项目"可燃液体浸润多孔介质固液两相耦合控制燃烧机理及蔓延特性研究",主持；

★湖南省自然科学基金重点项目"重载铁路隧道高载荷重大火灾动力学特性及控制方法研究",主持；

★公安部消防局科研计划项目"高速公路隧道工程消防验收方法及技术标准指南研究",主持；

★铁道部科技研究开发计划重点课题(分课题)"狮子洋水下隧道火灾蔓延规律及人员逃生疏散研究",主持；
★中国铁路总公司科技研究开发计划重大课题(分课题)"长大隧道及特殊环境防灾安全技术——长大及大规模隧道群的防灾救援技术"——"铁路隧道及隧道群火灾风险评估技术研究",主持；

★建筑消防工程技术公安部重点实验室开放课题,"隧道内可燃蒸气爆燃机理及火焰传播特性研究",主持；

★国家科技支撑计划项目子课题"交通隧道新型灭火技术工程应用研究---隧道救援站灭火技术应用研究"(参与)；

★中国安全生产科学研究院横向项目"长大区间隧道火灾烟气控制的阻塞比影响研究",主持；

★中国安全生产科学研究院横向项目"城市轨道交通隧道通风排烟系统新模式运行效果测试及数据分析项目",主持；

★中国安全生产科学研究院横向项目"城市轨道交通车站防灾新模式运行效果全尺寸测试及数据分析项目",主持；

★黄河勘测规划设计研究院有限公司横向项目"重载交通单洞双向特长隧道及隧道群建设与营运安全关键技术研究",主持.

代表性成果：
[1] Chen, Changkun; Jiao, Weibing; Zhang, Yulun; Lei, Peng. A comparative study on smoke temperature profile and corresponding different-exponential form correlation in single-line and bifurcated tunnel fires [J]. Tunnelling and underground space technology, 2023, 136:105090.

[2] Chen, Changkun; Jiao, Weibing; Zhang, Yulun; Shi, Congling; Lei, Peng; Fan, Chuangang. Experimental investigation on the influence of longitudinal fire location on critical velocity in a T-shaped tunnel fire [J]. Tunnelling and underground space technology, 2023,134：104983.

[3] Chen, Changkun; Lu, Tong; Zhang, Yulun; Shi, Congling; Jiao, Weibing. Experimental study on temperature profile and critical velocity in bifurcated tunnel fire with inclined transverse cross-passage [J]. International journal of thermal sciences. 2023.186: 108120.

[4] Chen Changkun; Nie Yanling; Zhang Yulun; Lei Peng; Jiao Weibing; Wang Xiaoyong; Experimental study on flame spread over poplar plywood in inclined trench: phenomenon of flame injection, Journal of Thermal Analysis and Calorimetry, 2020, 146 (1): 253-263.

[5] Chen, Changkun; Nie, Yanling; Zhang, Yulun; Lei, Peng; Fan, Chuangang; Wang, Zhengyang. Experimental investigation on the influence of ramp slope on fire behaviors in a bifurcated tunnel [J]. Tunnelling and underground space technology, 2020,104：103522.

[6] Chen Changkun; Zhang Yulun; Lei Peng; Jiao Weibing; A study for predicting the maximum gas temperature beneath ceiling in sealing tactics against tunnel fire, Tunnelling and Underground Space Technology, 2020, 98, 103275.

[7] Chen Changkun; Zhang Yulun; Zhao Xiaolong; Lei Peng; Nie Yanling; Experimental study on the influence of obstacle aspect ratio on ethanol liquid vapor deflagration in a narrow channel, International Journal of Thermal Sciences, 2020, 153, 106354.

[8] Chen Changkun; Zhang Yulun; Lei Peng; Zeng Wenqi; Jiao Weibing; Experimental study on fire behaviors in narrow-bifurcated channel with a confined portal, Combustion Science and Technology,2020 ,193 (13): 2194-2216.

[9] Chen Changkun; Xiao Huang; Wang Nannan; Shi Congling; Zhu Congxiang, Liu Xuanya; Experimental investigation of pool fire behavior to different tunnel-end ventilation opening areas by sealing, Tunnelling and Underground Space Technology, 2017, 63(01): 106-117.

[10] Chen Changkun; Zhu Congxiang; Liu Xuanya; Kang Heng; Zeng Jiawei; Yang Jian; The effect of fuel area size on behavior of fires in a reduced-scale single-track railway tunnel, Tunnelling and Underground Space Technology, 2016,52(04):127-137.

[11] Chen Changkun; Zhu Congxiang; Liu Xuanya; Yu Nianhao; Experimental investigation on the effect of asymmetrical sealing on tunnel fire behavior，International Journal of Heat and Mass Transfer, 2016, 92(03): 55-65.

[12] Jiao, Weibing;  Chen, Changkun;  Du, Wuhao; Lin, Zida; Bao, Yipeng;  Liu, Shishan. Experimental study on the effect of different sealing ratios on the behavior of continuous spill fires in sloped tunnels[J]. Tunnelling and underground space technology, 2025, 157: 106288.

[13]Jiao, Weibing; Chen, Changkun; Lei, Peng; Zhang, Yulun. Experimental study on the effects of branch tunnel ventilation on the smoke movement and temperature characteristics in bifurcated tunnel fires[J]. Tunnelling and underground space technology, 2023, 144: 105529.

[14] Jiao, Weibing;  Chen, Changkun;  Lin, Zida; Bao, Yipeng; Shi, Lang. Experimental study on the effect of longitudinal ventilation on spill fire characteristics in sloped tunnels[J].International journal of thermal sciences, 2024, 206: 109269.

[15] Jiao, Weibing;  Chen, Changkun*;  Lin, Zida; Bao, Yipeng; Shi, Lang. Experimental study on the burning characteristics and smoke temperature distribution of continuous spill fires in sloped tunnels[J]. Tunnelling and underground space technology, 2024, 152: 105884.

[16] Lei, Peng; Chen, Changkun; Jiao, Weibing; Shi, Congling. Experimental study on collaborative longitudinal ventilation of smoke control for branched tunnel fires considering different branch angles [J]. Tunnelling and underground space technology,2023.136: 105097

[17] Lei Peng,  Chen Changkun, Zhao Dongyue,  Zhang Yulun, Xu Tong, Jiao, Weibing.Study on heat allocation and temperature profile in a T-shaped branched tunnel fire with different branch slopes under natural ventilation[J]. Tunnelling and underground space technology.2022,126:104508

[18] Zhang Yulun, Chen Changkun, Lei Peng, Jiao Weibing, Xu Tong, Nie Yanling. A study on buoyancy-driven maximum ceiling gas temperature of T-shaped bifurcated channel-like structure in fire environment[J]. International journal of thermal sciences.2022,171: 107213.

[19] Zhao Xiaolong; Chen Changkun; Shi Congling*; Chen Jie; Chen Qingzhong; Zhao Dongyue.A three-dimensional simulation of the effects of obstacle blockage ratio on the explosion wave in a tunnel, Journal of Thermal Analysis and Calorimetry, 2021,143(4):3245-3256

[20] Zhang Yulun, Chen Changkun, Lei Peng, Wang Zhengyang, Jiao Weibing. Experimental investigation on ceiling flame extension subject to relative large area of liquid fuel in a channel-like structure with confined portals [J]. Tunnelling and underground space technology, 2021, 112:103899

[21] Zhang Yulun, Chen Changkun, Lei Peng, Jiao Weibing, Xu Tong, Nie Yanling. A study on buoyancy-driven maximum ceiling gas temperature of T-shaped bifurcated channel-like structure in fire environment. International journal of thermal sciences, 2022,171:107213.

[22] Lei Peng, Chen Changkun*, Zhang Yulun, Tong Xu, Huakai Sun. Experimental study on temperature profile in a branched tunnel fire under natural ventilation considering different fire locations[J]. International journal of thermal sciences, 2021, 159:106631

[23] Zhao Xiaolong; Chen Changkun*; Shi Congling*; Chen Jie; Chen Qingzhong; Zhao Dongyue; A three-dimensional simulation of the effects of obstacle blockage ratio on the explosion wave in a tunnel, Journal of Thermal Analysis and Calorimetry, 2020, 143 (4): 3245-3256 .

[24] Zhao Xiaolong; Chen Changkun*; Shi Congling; Zhao Dongyue; Chen Jie; Lei Peng; Zhang, Yulun; Experimental study on deflagration of ethanol vapor from pool with different location and area in tunnel, Journal of Loss Prevention in the Process Industries, 2019, 60: 213-220.

[25] Zhao Xiaolong; Chen Changkun*; Shi Congling*; Chen Jie; Zhao Dongyue; An extended model for predicting the temperature distribution of large area fire ascribed to multiple fuel source in tunnel, Tunnelling and Underground Space Technology, 2019, 85: 252-258.

[26] Zhao Dongyue, Chen Changkun, Lei Peng, Xu Tong, Jiao Weibing, Zhang Yulun. Experimental study on temperature profile and smoke movement in a model-branched tunnel fire under longitudinal ventilation[J]. Tunnelling and underground space technology.2022,121: 104324

[23] 陈长坤，张宇伦，赵小龙.管道类结构中障碍物阻塞比对可燃液体蒸气爆燃特性的影响. 中南大学学报(自然科学版). 2022, 53(7): 2746-2755.

[24] 陈长坤,聂艳玲,张宇伦,雷 鹏,焦伟冰.沟渠内杨木三合板架空燃烧的火灾行为的研究.工程热物理学报.2022,43(2):559-567.

[25] 陈长坤,焦伟冰,雷 鹏,张宇伦,赵小龙.分岔隧道火灾火源位置对临界风速影响的数值模拟分析.中国安全生产科学技术.2022,18(3):93-99.

[26] 陈长坤; 徐童; 史聪灵; 赵小龙; 张宇伦; 隧道内可燃液体蒸气爆燃超压缩尺寸实验研究, 清华大学学报(自然科学版), 2020, 60(03): 278-284.

[27] 陈长坤; 王玮玉; 康恒; 史聪灵; 刘晅亚; 不同火源面积下隧道火灾温度场试验与数值模拟分析, 中国公路学报, 2018, 31(06): 235-243.

[28] 陈长坤; 张宇伦; 赵小龙; 雷鹏; 隧道内槽罐车对甲醇蒸气爆炸压力场影响的数值模拟分析, 中国安全生产科学技术, 2018, 14(04): 126-132.

[29] 陈长坤; 肖煌; 朱从祥; 史聪灵; 刘晅亚; 隧道内固体与液体燃料火灾特征对比试验研究, 工程热物理学报, 2018, 39(03): 675-684.

[30] 陈长坤; 王玮玉; 刘晅亚; 隧道内甲醇液体蒸发及蒸气扩散规律数值模拟分析, 中国安全生产科学技术, 2017, 13(12): 52-57.

[31] 陈长坤; 陈杰; 史聪灵; 刘晅亚; 天然气爆炸荷载作用下地下管廊动力响应规律研究, 铁道科学与工程学报, 2017, 14(09): 1907-1914.

[32] 陈长坤; 王玮玉; 史聪灵; 刘晅亚; 隧道内通风及障碍物对甲醇蒸气扩散的影响分析, 中国安全生产科学技术, 2017, 13(03): 124-130.

[33] 陈长坤; 雷鹏; 史聪灵等; 公路隧道内氢气和丙烷爆炸数值模拟对比分析,中国安全生产科学技术，2017, 13(01): 23-27.

[34] 陈长坤*; 王玮玉; 张宇伦; 肖煌; 隧道内甲醇液体槽罐泄漏流淌扩展计算分析, 安全与环境学报, 2018, 18(05): 1829-1833.

[35] 雷鹏; 陈长坤; 赵冬月。纵向通风下分岔隧道火灾烟气蔓延特性及控制实验研究.铁道科学与工程学报.2022,19(07):2117-2124

[36] 雷鹏,陈长坤,史聪灵,陈杰,赵冬月,赵小龙.管廊内泄漏口朝向对天然气管道泄漏扩散影响的模拟分析，中国安全生产科学技术. 2021,17(10)：133-139

[37] 赵小龙; 陈长坤; 陈杰; 康朋飞; 阻塞比对地铁隧道烟气流速及温度分布的影响分析, 消防科学与技术, 2019, 38(02): 177-180.

指导优秀学位论文：

[1] 隧道内固体与液体燃料火灾特征对比研究,2017年中南大学优秀硕士论文奖指导老师奖（学生：朱从祥；导师：陈长坤）.

[2] 隧道内易燃液体蒸汽爆燃火焰波传播特性及抑爆机制研究,2021年中国消防协会优秀博士论文（学生：赵小龙；导师：陈长坤）.