Numerical Assessment of the Influences of the Coal Spontaneous Combustion on Gas Drainage Methods Optimization and Its Application
Numerical Assessment of the Influences of the Coal Spontaneous Combustion on Gas Drainage Methods Optimization and Its Application
复制标题
煤自燃对瓦斯抽采方法优化影响的数值评价及应用
DOI：
10.1080/00102202.2020.1731487
复制
发表时间：
2020-02
影响因子：
1.9
通讯作者：
Ye Qing
中科院分区：
文献类型：
--
作者：
Lu Yi;Gu Wangxin;Wang Geoff;Li He;Shi Shiliang;Niu Huiyong;Ye Qing
煤炭开采过程中的瓦斯和自燃严重威胁着煤矿的安全生产和经济效益。瓦斯抽放在降低瓦斯危险性的同时，也可能加剧煤的自燃。为了研究这两个问题之间的必然联系，以大隆煤矿南906工作面为研究对象。建立了物理、几何和数学模型。采用Fluent软件对高钻孔抽放、埋管抽放、邻巷抽放和尾巷抽放4种不同抽放方式下的瓦斯浓度分布和漏风场进行了数值模拟。模拟结果表明，这4种瓦斯抽放方式均能控制回风隅角瓦斯浓度，使其不超过一定的限值（1%）。但是，这些方法也使自燃带面积分别扩大了1.11、1.30、1.61和2.10倍。通过对模拟结果的综合分析，在相同瓦斯抽放量下，HDHE的影响最小。该瓦斯抽放方法在该工作面得到了应用。后续监测数据证实了我们的研究结果，排水管道中的CO浓度始终保持在0.0024%以下，回风角处的瓦斯浓度始终保持在0.70%以下。该研究为治理瓦斯爆炸与煤炭自燃共生灾害的采空区提供了重要的参考依据。
ABSTRACT Gas and spontaneous combustion of coal have seriously threatened the production safety and efficiency during the process of mining. Gas drainage can reduce the risk of gas while it may intensify the self-ignition of coal. In order to study the certain relationship between these two issues, the south 906 working face of Dalong Coal Mine was taken into research. The physical geometrical and mathematical model was established. Numerical investigation based on Fluent was conducted to identify the gas concentration distribution and air leakage field under four different gas drainage methods, such as high drill holes drainage (HDHE), buried pipe drainage (BPE), adjacent roadway drainage (ARE), and tail roadway drainage (TRE). The simulation results show that all these four gas drainage methods are able to control the gas concentration in the air return corner, so as not to exceed the certain limit (1%). However, these methods have also enlarged the area of spontaneous combustion zone with 1.11, 1.30, 1.61, and 2.10 times, respectively. According to the comprehensive analysis on simulation results, HDHE has the minimal influence under the same gas drainage amount. This gas drainage method was then applied in the aforementioned working face. The follow-up monitoring data proved our research results, with CO concentration in the drainage pipes always keeping lower than 0.0024% and gas concentration in the air return corner maintaining no more than 0.70%. The study provides significant references for managing the gob where exists symbiosis disaster of gas explosion and spontaneous combustion of coal.
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DOI：
10.1787/mtrcoal-2013-en
发表时间：
2017
期刊：
--
影响因子：
--
作者：
C. Álvarez
通讯作者：
C. Álvarez
影响因子：
1.9
作者：
Qing Guo;Wanxing Ren;L. Bai
通讯作者：
Qing Guo;Wanxing Ren;L. Bai
DOI：
10.2118/17726-pa
发表时间：
1990-03
期刊：
Spe Formation Evaluation
影响因子：
--
作者：
M. Zuber;V. Kuuskraa
通讯作者：
M. Zuber;V. Kuuskraa
影响因子：
1.9
作者：
Hailin Jia;H. Shen;Haijun Xiang;Dihui Li;R. Zhai
通讯作者：
Hailin Jia;H. Shen;Haijun Xiang;Dihui Li;R. Zhai
影响因子：
3.5
作者：
Liming Yuan;Alex Smith
通讯作者：
Liming Yuan;Alex Smith