基于EDEM仿真的煤岩截割产尘规律研究

王磊; 程煜; 徐荣萧

基于EDEM仿真的煤岩截割产尘规律研究

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出版历程
- 发布日期: 2023-01-19

Mechanism of dust production during coal and rock cutting based on EDEM

摘要

摘要: 为了分析煤岩掘进机截割产尘规律，基于EDEM仿真法构建掘进工作面煤岩体三轴受力模型，分析不同截割条件下煤岩截割产尘规律。结果表明：颗粒间黏结键数量随截割头运转时间呈周期性递减趋势，其周期长度范围为0.2～0.7 s，颗粒间破坏键数量随截割时间大致呈线性递增趋势；截割过程中岩体和煤体的颗粒平均抛掷速度随截割深度增加均呈周期性波动分布，且岩体截割过程的颗粒平均抛掷速度值明显较大；截割深度随着截割头运转时间的增加逐渐增加，颗粒抛掷平均速度自1.0 s左右呈波动性增加趋势；不同顶板压力条件下，随着截割深度的增加，颗粒平均速度均呈周期性增加趋势，而截煤岩高度对截割产尘过程的影响较小。
- 掘进工作面 /
- 截割产尘 /
- EDEM /
- 粉尘污染 /
- 模拟仿真 /
- 产尘规律 /
- 粉尘防治
Abstract: In order to analyze the mechanism of cutting and dust production of coal and rock driving machine, the three axis force model of coal and rock was constructed based on EDEM method, and the coal dust cutting mechanism under different cutting conditions was analyzed. The results show that the number of bonds between particles decreased periodically with the operation time of the cutting head, the cycle length is in the range of 0.2 s to 0.7 s, and the number of broken bonds between particles increases linearly with the cutting time; the average body mass and throwing velocity of particles in the process of coal cutting with cutting depth showed a distribution of cyclical fluctuations, in addition, the average particle throwing velocity of rock mass cutting is obviously larger; the cutting depth increased gradually with the increase of cutting head operating time and the average velocity of particle throwing shows an increasing trend of fluctuation from about 1.0 s; with the increase of cutting depth, the average speed of the particles increased periodically under different roof pressure conditions, and the height of cut coal has little influence on the dust generation process.
- driving face /
- cutting dust production /
- EDEM /
- dust pollution /
- analog simulation /
- dust-producing law /
- dust control

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参考文献(19)

[1]	任志峰，李远知，武建君，等.采煤机割煤产尘及粉尘运移规律的数值模拟[J].煤矿安全，2021，52（7）：170-174. REN Zhifeng, LI Yuanzhi, WU Jianjun, et al. Numerical analysis on migration of shearer-generated dust in mechanized coal mining workface[J]. Safety in Coal Mines, 2021, 52（7）: 170-174.
[2]	蒋仲安，杨斌，张国梁，等.高原矿井掘进工作面截割粉尘污染效应及通风控尘参数分析[J].煤炭学报，2021，46（7）：2146-2157. JIANG Zhongan, YANG Bin, ZHANG Guoliang, et al. Numerical analysis on migration of shearer-generated dust in mechanized coal mining workface[J]. Journal of China Coal Society, 2021, 46（7）: 2146-2157.
[3]	邹常富，刘勇，马威，等.综掘工作面粉尘的产生及运移规律研究[J].矿业安全与环保，2014，41（6）：26-28. ZOU Changfu, LIU Yong, MA Wei, et al. Study on dust generation and movement laws in fully-mechanized heading face[J]. Mining Safety & Environmental Protection, 2014（6）: 26-28.
[4]	Potyondy D O, Cundall P A. A bonded-particle model for rock[J]. International Journal of Rock Mechanics and Mining Sciences, 2004, 41（8）: 1329-1364.
[5]	N CHO, C D MARTIN, D C SEGO. A clumped particle model for rock[J]. International Journal of Rock Mechanics and Mining Sciences, 2007, 44（7）: 997-1010.
[6]	张晓龙，王义亮，杨兆建.基于EDEM的煤岩截割过程仿真分析[J].煤炭技术，2015，34（8）：243-244. ZHANG Xiaolong, WANG Yiliang, YANG Zhaojian. Simulation and analysis on coal cutting process based on EDEM[J]. Coal Technology, 2015, 34（8）: 243-244.
[7]	苗继军.基于EDEM的坚硬煤体力学特性仿真分析[J].煤矿机械，2022，43（10）：101-104. MIAO Jijun. Simulation analysis of mechanical properties of hard coal based on EDEM[J]. Coal Mine Machinery, 2022, 43（10）: 101-104.
[8]	申浩翰，张海，范俊锴，等.基于多参数拟合的EDEM岩石建模方法[J].岩土力学，2021，42（8）：2298-2310. SHEN Haohan, ZHANG Hai, FAN Junkai, et al. A rock modeling method of multi-parameters fitting in EDEM[J]. Rock and Soil Mechanics, 2021, 42（8）: 2298- 2310.
[9]	孟杰，孟文俊.影响EDEM仿真结果的因素分析[J].机械工程与自动化，2014（6）：49-51. MENG Jie, MENG Wenjun. Analysis of influencing factor on results of EDEM simulation[J]. Mechanical Engineering & Automation, 2014（6）: 49-51.
[10]	毛君，刘歆妍，陈洪月，等.基于EDEM的采煤机滚筒工作性能的仿真研究[J].煤炭学报，2017，42（4）：1069-1077. MAO Jun, LIU Xinyan, CHEN Hongyue, et al. Simulation of shearer drum cutting performance based on EDEM[J]. Journal of China Coal Society, 2017, 42（4）: 1069-1077.
[11]	董兵兵，李成栢.基于EDEM的截齿载荷及滚筒扭矩的研究与分析[J].矿业研究与开发，2020，40（7）：120-125. DONG Bingbing, LI Chengbai. Research and analysis on pick load and drum torque based on EDEM[J]. Mining Research and Development, 2020, 40（7）: 120-125.
[12]	问小江，方飞飞，刘应科，等.基于煤粉堆积角的EDEM颗粒接触参数标定[J].中国安全科学学报，2020，30（7）：114-119. WEN Xiaojiang, FANG Feifei, LIU Yingke, et al. Research on stacking angle of coal particles and parameter calibration on EDEM[J]. China Safety Science Journal, 2020, 30（7）: 114-119.
[13]	施从伟.综掘工作面控风除尘技术数值模拟研究及应用[J].煤矿安全，2020，51（6）：168-173. SHI Congwei. Numerical simulation research and application of air control and dust removal technology in fully mechanized driving face[J]. Safety in Coal Mines, 2020, 51（6）: 168-173.
[14]	赵跃民，张曙光，焦红光，等.振动平面上粒群运动的离散元模拟[J].中国矿业大学学报，2006（5）：586-590. ZHAO Yuemin, ZHANG Shuguang, JIAO Hongguang, et al. Simulation of discrete element of particles motion on the vibration plane[J]. Journal of China University of Mining & Technology, 2006（5）: 586-590.
[15]	赵丽娟，闻首杰，刘旭南.仿真颗粒半径对模拟滚筒截割复杂煤层的影响研究[J].机械科学与技术，2020，39（1）：52-57. ZHAO Lijuan, WEN Shoujie, LIU Xunan. The influence of simulated particle radius on complex coal seam of drum cutting[J]. Mechanical Science and Technology for Aerospace Engineering, 2020, 39（1）: 52-57.
[16]	丁翠.掘进巷道粉尘运移扩散规律研究进展[J].煤矿安全，2018，49（9）：219-222. DING Cui. Research progress of dust movement and diffusion laws in excavation roadway[J]. Safety in Coal Mines, 2018, 49（9）: 219-222.
[17]	王雅东，赵丽娟，张美晨.采煤机自适应调高控制策略[J].煤炭学报，2022，47（9）：3505-3522. WANG Yadong, ZHAO Lijuan, ZHANG Meichen. Research on self-adaptive height adjustment control strategy of shearer[J]. Journal of China Coal Society, 2022, 47（9）: 3505-3522.
[18]	赵丽娟，金鑫，赵宇迪，等.含夹矸煤层滚筒磨损特性离散元模拟试验分析[J].煤炭学报，2020，45（9）：3341-3350. ZHAO Lijuan, JIN Xin, ZHAO Yudi, et al. Discrete element simulation analysis on the wear characteristics of drum in coal seam with gangue[J]. Journal of China Coal Society, 2020, 45（9）: 3341-3350.
[19]	王虹，王步康，张小峰，等.煤矿智能快掘关键技术与工程实践[J].煤炭学报，2021，46（7）：2068-2083. WANG Hong, WANG Bukang, ZHANG Xiaofeng, et al. Key technology and engineering practice of intelligent rapid heading in coal mine[J]. Journal of China Coal Society, 2021, 46（7）: 2068-2083.