|
|
|
| Application research on fixed-point sampling of negative pressure slag discharge for coal seam gas content determination |
| Jiao Jihong 1, Wang Yujie 1, Li Hui 2, 3, 4 |
| 1. Gas Institute of Pingdingshan Tianan Coal Industry Co., Ltd., Pingdingshan 467099, China ; 2. Safety Science and Engineering College of Henan Polytechnic University, Jiaozuo 454003, China ; 3. Coal safety production and efficient and clean utilization of the province to build collaborative innovation center, Jiaozuo 454003, China; 4. School of Urban Construction and Safety Engineering, Shanghai University of Applied Sciences, Shanghai 201418, China |
|
|
|
|
Abstract In order to investigate the reliability and application effect of coal seam gas content determination by negative pressure slag discharge fixed-point sampling, the field application experiment of coal seam gas content determination was carried out by using the self-designed negative pressure fixed-point sampling system. The results show that the amount of coal samples taken by the negative pressure sampling system within 30s can meet the requirements of coal seam gas content determination, and rapid sampling can be realized. In the process of negative pressure sampling, with the increase of drilling depth, the pressure drop and air volume of the negative pressure sampling system gradually decrease. Negative pressure sampling can greatly improve the purity of coal samples. The gas loss, on-site desorption and laboratory desorption of coal seam measured by negative pressure sampling were significantly increased, and the gas content of coal seam increased by 45% -80.3% compared with that of air pressure sampling.
|
|
|
|
|
|
| [ 1 ] 袁 亮,张平松. 煤炭精准开采透明地质条件的构与思考[ J ]. 煤炭学报,2020,45( 7 ):2 346 - 2 356.
[ 2 ] Zhentang Liu, Xiaomeng Chu, Song Lin, et al. Trends and correla-
tion characteristics of coal mine gas explosion accident factors: a case study [ J ]. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2022.
[ 3 ] 王恩元,张国锐,张超林,等. 我国煤与瓦斯突出防治理论技术研究进展与展望[ J ]. 煤炭学报,2022,47( 1 ):297 -
322.
[ 4 ] 严明庆. 煤层瓦斯含量测定深孔快速取样技术研究[ J ]. 矿山机械,2021,49( 3 ):60 - 64.
[ 5 ] 王兆丰,王 龙,董家昕,等. 冷冻取芯过程含瓦斯煤样温度场演化规律模拟研究[ J ]. 煤炭学报,2021,46( 1 ):199 - 210.
[ 6 ] 张东旭. 瓦斯含量测定取样技术研究现状及展望[ J ]. 煤炭技术,2021,40( 6 ):147 - 149.
[ 7 ] 龙威成. 煤层瓦斯含量测定过程气成分差异研究[ J ]. 安全与环境学报,2020,20( 3 ):925 - 929.
[ 8 ] GB/T 23250-2009, 煤层瓦斯含量井下直接测定方法[ S ]. 北京,中国标准出版社,2009.
[ 9 ] 邓 楠. 煤层瓦斯含量直接测定取样技术研究进展[ J ]. 矿业安全与环保,2021,48( 4 ):113 - 117.
[ 10 ] 张振飞. 煤层瓦斯含量测定方法对比研究[ D ]. 合肥:安徽理工大学, 2013.
[ 11 ] 张建国, 李喜员, 高建成,等. 长钻孔远距离定点瓦斯含
量测定研究[ J ]. 工矿自动化, 2021, 47( 8 ):8.
[ 12 ] 傅雪海,张小东,韦重韬. 煤层含气量的测试、模拟与预测研究进展[ J ]. 中国矿业大学学报,2021,50( 1 ):13 - 31.
[ 13 ] 张宏图,魏建平,王云刚,等. 煤层瓦斯含量测定定点取样方法研究进展[ J ]. 中国安全生产科学技术,2016,12( 1 ):186 - 192.
[ 14 ] 温志辉,张宏图,魏建平,等. 负压定点取样煤层瓦斯含量测定损失量推算方法[ J ]. 中国矿业大学学报,2017,46( 4 ):776 - 782,802.
[ 15 ] 韩恩光,王兆丰,刘 勉,等. 取心管取心过程管壁温度测定试验研究[ J ]. 煤矿安全,2019,50( 6 ):20 - 23.
[ 16 ] 张学博,王文元,蔡行行. 深部煤层抽采钻孔变形失稳影响因素研究[ J ]. 煤炭科学技术,2021,49( 5 ):159 - 166.
[ 17 ] 韩 颖,张飞燕,刘 晓,等. 基于Hoek-Brown准则的煤层钻孔失稳破坏类型数值模拟研究[ J ]. 煤炭学报,2020,45( S1 ):308 - 318.
[ 18 ] 袁 亮,薛 生. 煤层瓦斯含量法预测煤与瓦斯突出理论与技术[ M ]. 北京:科学出版社,2014.
[ 19 ] 陈江龙,魏 超,孙际宏,等. 煤层瓦斯含量不同解吸方式损失瓦斯量推算研究[ J ]. 煤炭与化工,2021,44( 11 ):91 - 94.
[ 20 ] 秦跃平,徐 浩,毋 凡,等. 密度梯度驱动的煤粒瓦斯解吸扩散模型及实验验证[ J ]. 煤炭科学技术,2022( 1 ):1 - 8.
[ 21 ] 王 斌. 井下钻孔解吸法测定瓦斯含量影响因素实验研究[ D ]. 徐州:中国矿业大学,2015. |
|
|
|