Experimental and numerical simulation study on forced ventilation and dust removal of coal mine heading surface

IF 6.9 1区工程技术 Q2 ENERGY & FUELS

International Journal of Coal Science & Technology Pub Date : 2024-03-12 DOI:10.1007/s40789-024-00667-z

Haotian Zheng, Bingyou Jiang, Haoyu Wang, Yuannan Zheng

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Abstract

In order to study the problems of unreasonable airflow distribution and serious dust pollution in a heading surface, an experimental platform for forced ventilation and dust removal was built based on the similar principles. Through the similar experiment and numerical simulation, the distribution of airflow field in the roadway and the spatial and temporal evolution of dust pollution under the conditions of forced ventilation were determined. The airflow field in the roadway can be divided into three zones: jet zone, vortex zone and reflux zone. The dust concentration gradually decreases from the head to the rear of the roadway. Under the forced ventilation conditions, there is a unilateral accumulation of dust, with higher dust concentrations away from the ducts. The position of the equipment has an interception effect on the dust. The maximum error between the test value and the simulation result is 12.9%, which verifies the accuracy of the experimental results. The research results can provide theoretical guidance for the application of dust removal technology in coal mine.

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煤矿顶面强制通风除尘试验与数值模拟研究

为了研究航向面气流分布不合理、粉尘污染严重等问题，基于相似原理建立了强制通风除尘实验平台。通过类似的实验和数值模拟，确定了强制通风条件下巷道气流场的分布和粉尘污染的时空演变规律。巷道中的气流场可分为三个区域：射流区、涡流区和回流区。粉尘浓度从巷道头部向尾部逐渐降低。在强制通风条件下，粉尘呈单侧积聚，远离风道的粉尘浓度较高。设备的位置对粉尘有拦截作用。测试值与模拟结果的最大误差为 12.9%，验证了实验结果的准确性。研究成果可为煤矿除尘技术的应用提供理论指导。

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来源期刊

International Journal of Coal Science & Technology Multiple-

CiteScore

11.40

自引率

8.40%

发文量

678

审稿时长

12 weeks

期刊介绍： The International Journal of Coal Science & Technology is a peer-reviewed open access journal that focuses on key topics of coal scientific research and mining development. It serves as a forum for scientists to present research findings and discuss challenging issues in the field. The journal covers a range of topics including coal geology, geochemistry, geophysics, mineralogy, and petrology. It also covers coal mining theory, technology, and engineering, as well as coal processing, utilization, and conversion. Additionally, the journal explores coal mining environment and reclamation, along with related aspects. The International Journal of Coal Science & Technology is published with China Coal Society, who also cover the publication costs. This means that authors do not need to pay an article-processing charge.