Study on Dust Removal Technology of Explosive Water Mist in Drill and Blast Tunnelling

IF 1.4 4区工程技术 Q3 ENGINEERING, CIVIL

Periodica Polytechnica-Civil Engineering Pub Date : 2023-04-24 DOI:10.3311/ppci.21678

Jianjun Shi, H. Zhao, Wen-ke Xu, W. Zhang, H. An

引用次数: 2

Abstract

In view of the problem that high concentration of dust is easily generated during rock tunnel drilling and blasting construction, explosive water mist to reduce dust is given in this paper. Water bag is set up on tunnel face and explosive water mist is used to reduce blasting dust concentration. With the help of numerical simulation software FLUENT and combined with theoretical analysis, The key parameters of explosion fog and dust reduction technology are obtained: water bag spacing, blasting time difference, water bag layout position, etc., which provides a theoretical basis for practical application of the technology. At the same time, combined with the field test of Huangtai tunnel blasting, the dust concentration with and without water mist was measured, respectively. The results show that the maximum dust removal rate of the tunnel section under the dust removal measures with water mist can reach 80.85%, the average dust removal rate can reach 65.16%. So, the dust removal effect is remarkable.

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钻爆隧道爆炸水雾除尘技术研究

针对岩巷钻爆施工中容易产生高浓度粉尘的问题，提出了采用爆炸细水雾来降低粉尘的方法。在巷道工作面设置水袋，采用爆炸细水雾降低爆破粉尘浓度。借助FLUENT数值模拟软件，结合理论分析，得到了爆炸降雾降尘技术的关键参数:水袋间距、爆破时差、水袋布置位置等，为该技术的实际应用提供了理论依据。同时，结合黄台隧道爆破现场试验，分别测定了有水雾和无水雾时的粉尘浓度。结果表明:采用细水雾降尘措施后，隧道断面最大降尘率可达80.85%，平均降尘率可达65.16%。所以，除尘效果显著。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Periodica Polytechnica-Civil Engineering 工程技术-工程：土木

CiteScore

3.40

自引率

16.70%

发文量

审稿时长

12 months

期刊介绍： Periodica Polytechnica Civil Engineering is a peer reviewed scientific journal published by the Faculty of Civil Engineering of the Budapest University of Technology and Economics. It was founded in 1957. Publication frequency: quarterly. Periodica Polytechnica Civil Engineering publishes both research and application oriented papers, in the area of civil engineering. The main scope of the journal is to publish original research articles in the wide field of civil engineering, including geodesy and surveying, construction materials and engineering geology, photogrammetry and geoinformatics, geotechnics, structural engineering, architectural engineering, structural mechanics, highway and railway engineering, hydraulic and water resources engineering, sanitary and environmental engineering, engineering optimisation and history of civil engineering. The journal is abstracted by several international databases, see the main page.