基于cfd的大断面隧道风助喷雾幕降尘研究

IF 4.6 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2025-06-19 DOI:10.1016/j.powtec.2025.121248

Wen Nie , Yifei Wang , Huitian Peng , Changwei Xu , Fei Liu , Jianjun Li

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引用次数: 0

摘要

为解决大采高综采工作面高浓度煤尘污染问题，提出了一种风助喷雾幕除尘装置。我们使用不同类型的通风柜进行风量测试，并使用Fluent软件模拟喷嘴和通风柜的最佳组合。然后通过实验验证了该装置的有效性。通过对某大采高综采工作面的数值模拟，当装置外倾角为20°，风量为18 m3/min，喷淋压力为6 MPa时，效果最佳。高质量喷雾区对断面的覆盖率达到85.11%，D32在20 ~ 120μm范围内为78.2 μm。将该装置应用于小集韩13218综采工作面，监测喷淋前后粉尘浓度。设备启动后，总粉尘浓度和呼吸性粉尘浓度分别降至91.8和48.2 mg/m3。降尘效率分别达到87.4%和85.5%，表明该装置能有效解决工作面高浓度煤尘污染问题。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

CFD-based study on wind-assisted spray curtain dust suppression in large cross-section tunnels

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CFD-based study on wind-assisted spray curtain dust suppression in large cross-section tunnels

To solve the problem of high-concentration coal dust pollution in large mining height fully mechanized mining faces, we propose a wind-assisted spray curtain dust removal device. We conducted air volume tests using various types of hoods and used Fluent software to simulate the optimal combination of nozzles and hoods. We then verified the effectiveness of the device experimentally. Based on our numerical simulation of a fully mechanized mining face with large mining height, the best effect is achieved when the external declination angle of the device is 20°, the air volume is 18 m3/min, and the spray pressure is 6 MPa. The coverage of the high-quality spray field to the section reaches 85.11 %, and the D₃₂ is 78.2 μm in the range of 20–120μm. The device was applied to the Xiaoji Han 13,218 fully mechanized mining face to monitor the dust concentration before and after starting spraying. Total and respirable dust concentrations decreased to 91.8 and 48.2 mg/m³ after starting the device. The dust removal efficiency reached 87.4 % and 85.5 %, indicating that the device can effectively solve the problem of high-concentration coal dust pollution in a working face.

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.