Experimental study on particle size distribution of impact crushed coal containing gas
Experimental study on particle size distribution of impact crushed coal containing gas
复制标题
冲击破碎含瓦斯煤粒度分布试验研究
DOI：
10.1016/j.fuel.2022.124745
复制
发表时间：
2022
期刊：
影响因子：
7.4
通讯作者：
Yuechen Zhao
中科院分区：
文献类型：
--
作者：
Liang Wang;Hao Wang;Jintuo Zhu;Wenyi Huang;Yuechen Zhao
煤与瓦斯突出是多种因素共同作用下产生的煤岩动力灾害，伴随着对含瓦斯煤粒的冲击破碎。因此，研究煤的冲击破碎对于揭示煤与瓦斯突出的机理具有重要意义。本研究利用自行设计的实验系统，对冲击破碎条件下煤粒的特性进行了研究。选取辽宁小青煤矿7#煤层(XQ)和安徽邹庄煤矿32#煤层(ZZ)的煤样，进行了不同瓦斯压力下的落锤试验。分析了颗粒的粒度分布模型和比表面积分布比、平均粒径等参数。结果表明，GGS模型和RR模型能较好地拟合冲击后煤样的粒度分布。不同瓦斯压力煤样的试验结果表明，瓦斯对煤的强度有明显的削弱作用。建立了粒度分布与比破碎功、普罗托亚科诺夫系数之间的特定函数关系，可望在煤矿企业推广应用。
Coal and gas outburst is a coal-rock dynamic disaster caused by the combined action of multiple factors, accompanying by the impact crushing on coal particles containing gas. Therefore, the study of coal impact crushing is of great significance to reveal the mechanism of coal and gas outbursts. In this study, a self-designed experimental system was used to investigate the characteristics of the coal particles under impact crushing. The coal samples from Xiaoqing Coal Mine 7# coal seam in Liaoning (XQ) and Zouzhuang Coal Mine 32# coal seam in Anhui (ZZ) were selected, and tested for drop hammer experiments under different gas pressures. The particle size distribution model and parameters such as surface area distribution ratio and average particle size were analyzed. The results show that GGS model and RR model can well fit the particle size distribution of coal samples after impact. The test results of coal samples with different gas pressures show that gas weakens the strength of coal significantly. A specific functional relationship was established between particle size distribution and specific crushing work and Protodyakonov coefficient, which is expected to be applied in coal mining enterprises.
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影响因子：
--
作者：
An F;Cheng Y
通讯作者：
Cheng Y
DOI：
10.2991/emcm-15.2016.136
发表时间：
2016-02
期刊：
--
影响因子：
--
作者：
Shugang Li;Ning Wang;Tianjun Zhang
通讯作者：
Shugang Li;Ning Wang;Tianjun Zhang
影响因子：
2.5
作者：
N. Vishnoi;S. Mohapatra
通讯作者：
N. Vishnoi;S. Mohapatra
DOI：
10.1016/j.ijrmms.2004.06.004
发表时间：
2005-02
影响因子：
7.2
作者：
D. Reddish;L. Stace;P. Vanichkobchinda;D. Whittles
通讯作者：
D. Reddish;L. Stace;P. Vanichkobchinda;D. Whittles
影响因子：
4.4
作者：
Yang Dao-long;Li Jian-ping;Liu Song-yong
通讯作者：
Liu Song-yong