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首页> 外文期刊>Advanced Powder Technology: The internation Journal of the Society of Powder Technology, Japan >Application and research of dry-type filtration dust collection technology in large tunnel construction
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Application and research of dry-type filtration dust collection technology in large tunnel construction

机译：干式过滤除尘技术在大型隧道施工中的应用与研究

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Large amounts of rock dust are produced in the process of constructing large tunnels. It then accumulates in the tunnel where, because it is difficult to disperse, it is a serious threat to workers' health; more than 90% of dust is respirable. Traditional methods to reduce rock dust concentrations, such as a water spray, ventilation, and foam are not effective. Therefore, a new dry-type filtration dust collection method is put forward to use in the construction of large tunnels, and a dry-type filtration dust collection device is designed. Experiments and field application of the dry-type filtration dust collection device were carried out. Experimental results showed that the total dust suppression efficiency reached 98.41% and the leakage rate was 7.86% with the dry-type filtration dust collector. The field application in the Chaoyang tunnel indicated that the efficiency of the dry-type dust collector in suppressing total and respirable dust was 98.13% and 97.86%, respectively. During lining trolley shotcreting operations, the total dust concentration decreased from 253.41 mg/m(3) to 29.97 mg/m(3) and the respirable dust concentration dropped from 226.73 mg/m(3) to 28.85 mg/m(3). The dust collection system also reached the optimal dust removal efficiency in two other tunnel construction operations and made an obvious improvement in the environment behind the dust collection system in the large tunnel. The dry-type filtration dust collector effectively improves the rock dust collection efficiency and makes up for the problem of inadequate treatment of respirable dust by the traditional methods. (C) 2017 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.
机译：在构建大隧道的过程中生产了大量的岩尘。然后它在隧道中积累，因为难以驱散，这对工人的健康是严重的威胁;超过90％的灰尘是可吸入的。减少岩尘浓度的传统方法，例如水喷雾，通风和泡沫无效。因此，提出了一种新的干式过滤除尘方法，用于建造大型隧道，设计干式过滤除尘装置。进行了干式过滤除尘装置的实验和田间应用。实验结果表明，干式过滤除尘器，总尘抑制效率达到98.41％，渗漏率为7.86％。朝阳隧道中的现场应用表明，抑制总和可吸入粉尘的干式除尘器的效率分别为98.13％和97.86％。在衬里推车喷射运动过程中，总粉尘浓度从253.41mg / m（3）降至29.97mg / m（3），并且可吸入粉尘浓度从226.73mg / m（3）滴到28.85mg / m（3）。除尘系统还达到了两种其他隧道施工操作中最佳的除尘效率，并对大型隧道中的集尘系统后面的环境显而易见。干式过滤除尘器有效地提高了岩石粉尘收集效率，并通过传统方法弥补了可吸入可吸入灰尘的问题。 （c）2017年日本粉末科技学会。由elsevier b.v发表。和日本粉末科技会。版权所有。

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