负压取样过程钻杆转速对煤屑-气流动特性的影响研究

doi:10.16265/j.cnki.issn1003-3033.2025.04.0998

中国安全科学学报 ›› 2025, Vol. 35 ›› Issue (4): 94-100.doi: 10.16265/j.cnki.issn1003-3033.2025.04.0998

负压取样过程钻杆转速对煤屑-气流动特性的影响研究

张宏图副教授¹^,²^,³(), 甄泽栋¹, 李博涛讲师¹^,²^,³^,^**(), 张欧娅⁴

¹ 河南理工大学安全科学与工程学院,河南焦作 454003
² 河南理工大学河南省瓦斯地质与瓦斯治理重点实验室-省部共建国家重点实验室培育基地,河南焦作 454003
³ 河南理工大学煤炭安全生产与清洁高效利用省部共建协同中心,河南焦作 454003
⁴ 湘潭大学艺术学院,湖南湘潭 411100

收稿日期:2024-12-15 修回日期:2025-02-19 出版日期:2025-04-28
通信作者:
**李博涛(1994—),男,河南漯河人,博士,讲师,主要从事煤矿瓦斯灾害防治方面的研究。E-mail: libotao@hpu.edu.cn。
作者简介:
张宏图 (1988—),男,河南驻马店人,博士,副教授,主要从事煤矿瓦斯灾害防治方面的研究。E-mail: zhanghongtu@hpu.edu.cn。
基金资助:
国家自然科学基金资助(52274192); 河南省自然科学基金优秀青年项目资助(232300421062); 河南省高校科技创新人才支持计划资助项目(24HASTIT015)

Study on influence of drill pipe rotation speed on coal particles-gas flow characteristics in negative pressure sampling process

ZHANG Hongtu¹^,²^,³(), ZHEN Zedong¹, LI Botao¹^,²^,³^,^**(), ZHANG Ouya⁴

¹ School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo Henan 454003, China
² State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Jiaozuo Henan 454003, China
³ State Collaborative Innovation Center of Coal Work Safety and Clean-efficiency Utilization, Henan Polytechnic University, Jiaozuo Henan 454003, China
⁴ Art College, Xiangtan University, Xiangtan Hunan 411100, China

Received:2024-12-15 Revised:2025-02-19 Published:2025-04-28

摘要/Abstract

摘要：

为探究负压取样过程中钻杆内煤屑-气流动特性,采用计算流体力学与离散单元法(CFD-DEM)耦合模拟法探讨钻杆转速、煤屑质量流量对煤屑输送过程中气固流动速度分布及煤屑输送效率的影响特征。结果表明:钻杆内气流最大轴向速度随着输送距离的增加而逐渐减小并趋于稳定,最大切向速度迅速衰减并消失;钻杆转速增加时,气流最大轴向速度变化不大,最大切向速度显著增加;随着钻杆转速增加,煤屑螺旋流更加明显,旋流区距离变长,悬浮区距离变短;进入钻杆的煤屑数量减少,5 m/s速度以上的煤屑分布增多且分散;转动时钻杆内部实际固气比小于设定值,煤屑输送效率随转速的提高先增后减。

关键词: 负压取样, 钻杆转速, 煤屑, 流动特性, 计算流体力学与离散单元法(CFD-DEM)耦合模拟

Abstract:

In order to investigate the impact of drill pipe rotation on coal particles transport efficiency during negative pressure sampling, CFD and DEM were used to explore the effects of drill pipe rotational speed and coal particles mass flow rate on gas-solid flow characteristics. The results show that: the maximum axial airflow velocity inside the drill pipe decreases and stabilizes as the transport distance increases, while the maximum tangential velocity rapidly decays and vanishes. As rotational speed increases, the axial airflow velocity remains largely unchanged, but the tangential velocity significantly increases. With higher rotational speed, the spiral flow of coal particles becomes more pronounced, the length of the vortex region increases, and the length of the suspension region decreases. The number of coal particles entering the drill pipe decreases, and the distribution of particles above 5 m/s increases and becomes more dispersed. During rotation, the actual solid-to-gas ratio inside the drill pipe is lower than the set value, and coal particles transport efficiency increases and then decreases with the rise in rotational speed.

Key words: negative pressure sampling, drill pipe rotating speed, coal particles, flow characteristic, computational fluid dynamics(CFD)-discrete element method (DEM) coupling

中图分类号:

X936

张宏图, 甄泽栋, 李博涛, 张欧娅. 负压取样过程钻杆转速对煤屑-气流动特性的影响研究[J]. 中国安全科学学报, 2025, 35(4): 94-100.

ZHANG Hongtu, ZHEN Zedong, LI Botao, ZHANG Ouya. Study on influence of drill pipe rotation speed on coal particles-gas flow characteristics in negative pressure sampling process[J]. China Safety Science Journal, 2025, 35(4): 94-100.

图/表 10

图1

表1

表2

图2

图3

图4

图5

图6

表3

图7

参考文献 15

[1]	陈亮, 王恩元. 含瓦斯煤受载破坏瓦斯涌出的前兆特征研究[J]. 中国安全科学学报, 2020, 30(12): 79-84. doi: 10.16265/j.cnki.issn 1003-3033.2020.12.011
	CHEN Liang, WANG Enyuan. Study on precursory characteristics of gas emission from damaged coal containing gas[J]. China Safety Science Journal, 2020, 30(12): 79-84. doi: 10.16265/j.cnki.issn 1003-3033.2020.12.011
[2]	林海飞, 高帆, 严敏, 等. 煤层瓦斯含量PSO-BP神经网络预测模型及其应用[J]. 中国安全科学学报, 2020, 30(9):80-87.
	LIN Haifei, GAO Fan, YAN Min, et al. Study on PSO-BP neural network prediction method of coal seam gas content and its application[J]. China Safety Science Journal, 2020, 30(9):80-87.
[3]	王俏, 王兆丰, 马树俊, 等. 冷冻取芯过程煤样温度变化特性研究[J]. 中国安全科学学报, 2021, 31(2): 76-81. doi: 10.16265/j.cnki.issn 1003-3033.2021.02.011
	WANG Qiao, WANG Zhaofeng, MA Shujun, et al. Study on temperature variation of coal sample in process of freezing coring[J]. China Safety Science Journal, 2021, 31(2): 76-81. doi: 10.16265/j.cnki.issn 1003-3033.2021.02.011
[4]	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.
	ZHANG Hongtu, WEI Jianping, WANG Yungang, et al. Sampling methods for coalbed gas content direct determination[J]. Journal of Safety Science and Technology, 2016, 12(1):186-192.
[5]	王庆, 张佳伟, 陶亮, 等. 古龙页岩油水平井扩径段岩屑运移数值模拟研究[J]. 石油机械, 2023, 51(12):44-51.
	WANG Qing, ZHANG Jiawei, TAO Liang, et al. Numerical simulation on cuttings migration in hole enlargement section of horizontal well in gulong shale oil reservoir[J]. China Petroleum Machinery, 2023, 51(12):44-51.
[6]	AWAD A M, HUSSEIN I A, NASSER M S, et al. A CFD-RSM study of cuttings transport in non-Newtonian drilling fluids: impact of operational parameters[J]. Journal of Petroleum Science and Engineering, 2022, 208: DOI:10.1016/j.petrol.2021.109613.
[7]	MAO Chunzhi, ZHANG Xinxin, LI Fenqiang, et al. On cutting transport for air reverse circulation in horizontal and inclined wells[J]. Tunnelling and Underground Space Technology, 2023, 136: DOI:10.1016/j.tust.2023.105095.
[8]	张鑫鑫, 毛纯芝, 信伟卫, 等. 基于欧拉双流体模型的微小井眼环空岩屑运移数值模拟研究[J]. 中南大学学报:自然科学版, 2023, 54(11):4413-4423.
	ZHANG Xinxin, MAO Chunzhi, XIN Weiwei, et al. Numerical simulation research of cuttings transport in microhole annulus based on Eulerian two-fluid model[J]. Journal of Central South University:Science and Technology, 2023, 54(11):4413-4423.
[9]	AKHSHIK S, BEHZAD M, RAJABI M. CFD-DEM simulation of the hole cleaning process in a deviated well drilling: the effects of particle shape[J]. Particuology, 2016, 25:72-82.
[10]	AKHSHIK S, BEHZAD M, RAJABI M. CFD-DEM approach to investigate the effect of drill pipe rotation on cuttings transport behavior[J]. Journal of Petroleum Science and Engineering, 2015, 127:229-244.
[11]	PANG Boxue, WANG Shuyan, JIANG Xiaoxue, et al. Effect of orbital motion of drill pipe on the transport of non-Newtonian fluid-cuttings mixture in horizontal drilling annulus[J]. Journal of Petroleum Science and Engineering, 2019, 174:201-215. doi: 10.1016/j.petrol.2018.11.009
[12]	胡金帅, 张光伟, 李峻岭, 等. 基于CFD-DEM耦合模型的岩屑运移数值模拟分析[J]. 断块油气田, 2022, 29(4):561-566.
	HU Jinshuai, ZHANG Guangwei, LI Junling, et al. Numerical simulation of cuttings migration based on CFD-DEM coupling model[J]. Fault-Block Oil & Gas Field, 2022, 29(4):561-566.
[13]	LI Botao, ZHANG Hongtu, WEI Jianping, et al. Coal particle transport behavior in a rotating drill pipe used for negative pressure pneumatic conveying[J]. Powder Technology, 2022, 402: DOI:10.1016/j.powtec.2022.117369.
[14]	李博涛. 负压排渣钻孔定点取样过程煤屑-气流动特性研究[D]. 焦作: 河南理工大学, 2020.
	LI Botao. Gas-solid flow characteristics of sampling method based on negative pressure pneumatic conveying[D]. Jiaozuo: Henan Polytechnic University, 2020.
[15]	宋先知, 李根生, 王海柱, 等. 盐穴储气库底部碎屑旋转射流冲洗数值模拟[J]. 天然气工业, 2010, 30(8):83-86.
	SONG Xianzhi, LI Gensheng, WANG Haizhu, et al. Numerical simulation on rotating jet-flow washing for debris on the bottom of cavern underground storage[J]. Natural Gas Industry, 2010, 30(8):83-86.

网格数量	压降/Pa	最大误差/%
64 278	377	3.1
98 319	369
139 308	358
177 118	352

参数对象	数值
钢密度/(kg·m^-3)	7 400
钻杆转速/(r·min^-1)	0、50、100、150、200
取样风速/(m·s^-1)	20
煤屑直径/mm	2
煤屑密度/(kg·m^-3)	1 450
煤屑质量流量/(kg·s^-1)	0.01、0.02、0.03、0.04
煤屑—煤屑静摩擦因数	0.6
煤屑—煤屑动摩擦因数	0.05
煤屑—钢静摩擦因数	0.4
煤屑—钢动摩擦因数	0.05

工况	设定质量流量/ (kg·s^-1)	转速/ (r·min^-1)	设定固气比	实际固气比
1	0.01	0	0.48	0.32
2		50		0.375
3		100		0.36
4		150		0.33
5		200		0.34
6	0.02	0	0.95	0.64
7		50		0.76
8		100		0.71
9		150		0.63
10		200		0.61
11	0.03	0	1.43	0.81
12		50		0.85
13		100		0.77
14		150		0.61
15		200		0.54
16	0.04	0	1.90	0.82
17		50		0.85
18		100		0.77
19		150		0.61
20		200		0.54

负压取样过程钻杆转速对煤屑-气流动特性的影响研究

Study on influence of drill pipe rotation speed on coal particles-gas flow characteristics in negative pressure sampling process

RichHTML

PDF

可视化

摘要/Abstract

引用本文

使用本文

图/表 10

参考文献 15

相关文章 2

编辑推荐

Metrics

本文评价

[1]	魏勇, 许开立, 熊琳, 李梦. 尾矿溃坝砂流流动特性及规律模型试验研究[J]. 中国安全科学学报, 2017, 27(4): 122-126.
[2]	谢元一，王厚华. 建筑物走廊型通道中火灾烟气流动特性的研究[J]. 中国安全科学学报, 2006, 16(1): 88-.