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2. College of Safety Science and Engineering, Liaoning Technical University, Fuxin 123000, China;
3. College of Mining Engineering, Liaoning Technical University, Fuxin 123000, China;
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3. 辽宁工程技术大学矿业学院, 阜新 123000;
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褐煤自然发火特性实验及数值模拟
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科技导报 | 研究论文 2016,34(18): 190-193
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科技导报 | 研究论文 2016, 34(18): 190-193
褐煤自然发火特性实验及数值模拟
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张晓明1, 张河猛2, 王琢3, 王永军3, 佐佐木久郎4
作者信息
    1. 辽宁工程技术大学工程与环境研究所, 葫芦岛 125000;
    2. 辽宁工程技术大学安全科学与工程学院, 阜新 123000;
    3. 辽宁工程技术大学矿业学院, 阜新 123000;
    4. 九州大学工学部地球资源工学部门, 福冈 8190395
Experiment and numerical simulation of lignite for spontaneous combustion
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出版时间: 2016-09-28 doi: 10.3981/j.issn.1000-7857.2016.18.026
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为研究褐煤的自然发火特性,采用恒温加热法,对不同尺寸的立方体网状容器内的煤样进行实验,得到煤样的升温曲线和临界自燃点温度。根据实验条件,应用Fluent软件建立煤样升温过程的温度场、空气渗流场和氧气浓度场三场耦合模型。实验与模拟结果表明:煤体体积越大,临界自燃温度越低;当环境温度高于临界自燃温度值,煤体能够自燃,反之煤体不能自燃;煤体升温过程中的温度场、空气渗流场和氧气浓度场是随着时间变化并且相互影响的。
自然发火  /  临界自燃温度  /  数值模拟  /  多场耦合
This paper investigates the characteristics of lignite spontaneous combustion, with coal samples piled in cube mesh-boxes of three different sizes, placed in a constant temperature chamber and tested by the isothermal heating method. The temperature-time traces and the critical self-ignition temperature in different size coal piles are obtained. The critical self-ignition temperature is lower for larger stockpile volumes. The heating curves of coal will reach the ignition point when the set ambient air temperature is higher than the critical self-ignition temperature. On the other hand, the coal sample will not be self-ignited. Based on the conditions of the experiment, the temperature field, the air seepage field and the oxygen concentration field are simulated by the Fluent software. The three fields change with time and interact with each other in the entire experiment process.
spontaneous combustion  /  critical self-ignition temperature  /  numerical simulation  /  multi-field coupling
张晓明, 张河猛, 王琢, 王永军, 佐佐木久郎. 褐煤自然发火特性实验及数值模拟. 科技导报, 2016 , 34 (18) : 190 -193 . DOI: 10.3981/j.issn.1000-7857.2016.18.026
ZHANG Xiaoming, ZHANG Hemeng, WANG Zhuo, WANG Yongjun, SASAKI Kyuro. Experiment and numerical simulation of lignite for spontaneous combustion[J]. Science & Technology Review, 2016 , 34 (18) : 190 -193 . DOI: 10.3981/j.issn.1000-7857.2016.18.026
2016年第34卷第18期
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doi: 10.3981/j.issn.1000-7857.2016.18.026
  • 接收时间:2015-08-04
  • 首发时间:2016-10-21
  • 出版时间:2016-09-28
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  • 收稿日期:2015-08-04
  • 修回日期:2015-12-21
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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