倾斜综采工作面粉尘运移特性研究

doi:10.16265/j.cnki.issn1003-3033.2026.S1.0027

摘要/Abstract

摘要：

为探究倾斜综采工作面粉尘运移特性,以某矿倾斜综采工作面为研究对象,建立1∶1全尺寸物理模型,基于气固两相流理论,结合现场实测参数,运用ANSYS数值模拟软件对粉尘运移特性进行计算分析。结果表明:风流在进风隅角、采煤机位置及回风隅角形成高速区,最大风速分别为2.32、2.24和2.12 m/s,且整个空间内人行道侧风速始终低于电缆槽侧。粉尘随风流向工作面下风侧扩散,采煤机前滚筒处粉尘浓度最高达2 465.67 mg/m³;工作面倾角延长了粉尘悬浮时间并降低沉降速率,在采煤机前滚筒后方人行道呼吸带高度形成长62.39 m、宽1.75 m、平均浓度892.43 mg/m³的高浓度粉尘团,此区域为煤矿开采过程中的重点防护区域。

关键词: 综采工作面, 粉尘运移, 扩散特性, 数值模拟, 粉尘防治

Abstract:

To explore the dust migration characteristics in inclined fully mechanized working faces, this study established a 1∶1 full-scale physical model using Solidworks. Based on the gas-solid two-phase flow theory and combined with field-measured parameters, ANSYS numerical simulation software was employed to calculate and analyze the dust migration characteristics. The results show that airflow forms high-velocity zones at the intake corner, shearer position, and return corner, with maximum wind speeds reaching 2.32, 2.24, and 2.12 m/s, respectively. Additionally, the wind speed on the walkway side is consistently lower than that on the cable trough side throughout the space. Dust diffuses downwind along the airflow direction in the working face, with the highest dust concentration (2 465.67 mg/m³) observed at the front drum of the shearer. The working conditions prolong dust suspension time and reduce the settlement rate, forming a high-concentration dust cloud at the breathing zone height on the walkway behind the shearer's front drum, with a length of 62.39 m, width of 1.75 m, and average concentration of 892.43 mg/m³. This area is identified as a key protection zone during coal mining.

Key words: fully mechanized working face, dust migration, diffusion characteristic, numerical simulation, dust prevention and control

中图分类号:

X936

张文政, 赵盛男. 倾斜综采工作面粉尘运移特性研究[J]. 中国安全科学学报, 2026, 36(S1): 183-189.

Zhang Wenzheng, Zhao Shengnan. Research on dust migration characteristics in inclined fully mechanized working face[J]. China Safety Science Journal, 2026, 36(S1): 183-189.

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类别	参数	数值
边界条件	湍流模型	k-ε
	入口边界速度/(m/s)	1.15
	滚筒轴向平面速度/(m/s)	0.6
	滚筒径向平面速度/(m/s)	-0.455
	水力直径/m	4.03
	湍流强度	3.29%
粉尘参数	滚筒产尘质量流率/(g/s)	11.5
	移架产尘质量流率/(g/s)	12.3
	粉尘最小粒径/m	2.19×10^-7
	粉尘中等粒径/m	3.92×10^-6
	粉尘最大粒径/m	3.08×10^-5
	分布指数	1.78