碎软煤层坚硬顶板综采工作面自燃“三带”分布与注氮参数研究
Study on spontaneous combustion “three zones” distribution and N2 injection parameters in hard roof of broken soft coal seam fully mechanized mining face
-
摘要: 为了解决碎软突出煤层坚硬顶板条件下,综采工作面采空区自燃“三带”划分及注氮参数设计与优化的问题,在进、回风巷布置埋管实测进、回风侧自燃“三带”并采用数值模拟、图像处理相结合的方法确定采空区中部自燃“三带”分布,并给出了注氮参数。研究表明:在碎软煤层坚硬顶板条件下,采空区散热带和氧化带宽度都明显变宽,最佳注氮口在散热带和氧化带交界处,但该位置埋深较深,拖管注氮存在困难,可通过增加注氮量减小注氮深度在注氮管埋深30 m处注氮,最佳注氮量为600~800 m3/h,采空区CO分布与自燃“三带”分布呈对应关系,24311工作面最小安全推进速度为1.89 m/d,工作面安全通风量为119 m3/min。Abstract: In order to solve the problem of “three zones” division of spontaneous combustion in goaf of fully mechanized coal face and design and optimization of nitrogen injection parameters under the condition of hard roof of crushing soft outburst coal seam, three zones of spontaneous combustion on the inlet and return sides are measured by buried pipes in the inlet and return air lanes. The distribution of the three zones in the middle of goaf is determined by numerical simulation and image processing, and nitrogen injection parameters are given. The research shows that under the condition of hard roof of crushing soft coal seam, the width of the dispersion zone and the oxidation zone in the goaf is obviously widened, and the optimal N2 injection outlet is at the junction of the dispersion zone and the oxidation zone. However, it is difficult to inject N2 into the towed tube because of the deep burial. Therefore, by increasing the N2 injection amount and reducing the N2 injection depth, the optimal N2 injection amount is 600 m3/h to 800 m3/h when the N2 injection pipe is injected at the buried depth of 30 m. There is a corresponding relationship between the CO distribution and the “three zones” in the goaf. The minimum safe advancing speed of the 24311 working face is 1.89 m/d. The safety ventilation of working face is 119 m3/min.
-
-
[1] 朱令起.矿井火灾预测预警及密闭启封安全性研究[D].北京:中国矿业大学(北京),2010. [2] 姜进军.白芨沟煤矿渣台隐蔽火区探测技术[J].煤矿安全,2014,45(7):53-55. JIANG Jinjun. Detection technology on slag station hidden fire area in Baijigou coal mine[J]. Safety in Coal Mines, 2014, 45(7): 53-55.
[3] 张宏.神东矿区煤炭自燃特性及防灭火技术研究[D].葫芦岛:辽宁工程技术大学,2013. [4] 李波,巨广刚,王珂,等.2005-2014年我国煤矿灾害事故特征及规律研究[J].矿业安全与环保,2016,43(3):111-114. LI Bo, JU Guanggang, WANG Ke, et al.Study on characteristics and regularity of disaster accidents in China’ s coal mines from 2005 to 2014[J]. Mining Safety and Environmental Protection, 2016, 43(3): 111-114.
[5] 邓军,李贝,王凯,等.我国煤火灾害防治技术研究现状及展望[J].煤炭科学技术,2016,44(10):1-7. DENG Jun, LI Bei, WANG Kai, et al. Research status and outlook on prevention and control technology of coal fire disaster in China[J]. Coal Science and Technology, 2016, 44(10): 1-7.
[6] 徐精彩,葛岭梅,贺敦良.煤炭低温自燃过程的研究[J].煤炭工程师,1989(5):7-13. [7] 邓军,徐精彩,张迎弟,等.煤最短自然发火期实验及数值分析[J].煤炭学报,1999,24(3):274-278. DENG Jun, XU Jingcai, ZHANG Yingdi, et al. Experimental and numerical analysis on the shortest spontaneous combustion period of coal[J]. Journal of China Coal Society, 1999, 24(3): 274-278.
[8] 徐精彩,文虎,张辛亥,等.综放面采空区遗煤自燃危险区域判定方法的研究[J].中国科学技术大学学报,2002,32(6):672-677. XU Jingcai, WEN Hu, ZHANG Xinhai, et al. Study on the method for determining dangerous zones of coal self-ignition in gobs in a fully mechanized top-coal caving face[J]. Journal of University of Science and Technology of China, 2002, 32(6): 672-677.
[9] 梁伟锋.上榆泉煤矿综放工作面采空区“三带”划分实践及防灭火技术[J].煤矿安全,2019,50(2):156. LIANG Weifeng. Practice and fire prevention and extinguishing technology of“three zones” division in goaf of fully mechanized caving face of shangyuquan coal mine[J]. Safety in Coal Mines, 2019, 50(2): 156.
[10] 曹乃夫.三道沟煤矿综采工作面采空区自燃“三带”划分与漏风测定[J].煤矿安全,2019,50(6):192. CAO Naifu. Division of goaf spontaneous combustion“three zones” and air leakage test in sandaogou coal mine fully mechanized mining face[J]. Safety in Coal Mines, 2019, 50(6): 192.
[11] 时国庆,王德明,奚志林,等.基于FLUENT对采空区氧气浓度场的数值模拟[J].煤炭科学技术,2009,37(6):76-79. SHI Guoqing, WANG Deming, XI Zhiling, et al. Numerical smiulation of oxygen concentration distribution in gob areas based on FLUENT[J]. Coal Science and Techno logy, 2009, 37(6): 76-79.
[12] 宁廷洲,赵波,林海飞,等.倾斜特厚煤层综放开采采空区瓦斯分布规律研究[J].煤炭技术,2019,38(12):105-107. NING Tingzhou, ZHAO Bo, LIN Haifei, et al. Research of gas distribution law in goaf of fully-mechanized topcoal caving mining in inclined thick coal seam[J]. Coal Technology, 2019, 38(12): 105-107.
[13] 张东明,刘见中.煤矿采空区瓦斯流动分布规律分析[J].中国地质灾害与防治学报,2003,14(1):81-84. ZHANG Dongming, LIU Jianzhong. Regularity on the distribution of gas moving in gob area of coal mine[J]. The Chinese Journal of Geological Hazard and Control, 2003, 14(1): 81-84.
[14] 高玉坤,肖善林,闫建浩,等.平山煤矿采空区高位钻孔瓦斯抽放数值模拟[J].煤矿安全,2017,48(4):160-163. GAO Yukun, XIAO Shanlin, YAN Jianhao,et al. Numerical Simulation on Goaf Gas Drainage of High-level Borehole in Pingshan Coal Mine[J]. Safety in Coal Mines, 2017, 48(4): 160-163.
[15] 史小军.煤矿采空区瓦斯抽放数值模拟研究[J].煤炭与化工,2017,40(11):110-112. SHI Xiaojun. Numerical simulation study of gas drainage in mine goaf[J]. Coal and Chemical Industry, 2017, 40(11): 110-112.
[16] J·贝尔.多孔介质流体动力学[M].李竞生,陈崇希译.北京:中国建筑工业出版社,1983. -
期刊类型引用(6)
1. 周素静，康楠，余敏. 基于变形分数阶Lorenz混沌系统的煤岩界面图像分割方法. 金属矿山. 2024(12): 246-251 . 
百度学术
2. 张新华，田加加. 松软煤层瓦斯抽采钻孔煤岩层位识别关键技术研究与应用. 能源与环保. 2023(09): 20-25 . 百度学术
3. 杨程涛，刘伟，武腾飞，熊俊杰. 基于钻进参数的钻孔煤岩界面识别系统开发及应用. 煤炭技术. 2023(12): 182-185 . 百度学术
4. 张强，张润鑫，刘峻铭，王聪，张赫哲，田莹. 煤矿智能化开采煤岩识别技术综述. 煤炭科学技术. 2022(02): 1-26 . 百度学术
5. 杨宇博，田慕琴. 基于麻雀优化的二维Otsu煤岩界面识别方法. 现代电子技术. 2022(19): 49-53 . 百度学术
6. 李彦明，孙利海. 基于多源异构信息耦合的煤岩界面识别技术研究. 矿业安全与环保. 2022(05): 6-10 . 百度学术
其他类型引用(7)
计量
- 文章访问数: 49
- HTML全文浏览量: 0
- PDF下载量: 0
- 被引次数: 13
下载:
