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首页> 外文期刊>Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems >Numerical simulations on airflow-dust diffusion rules with the use of coal cutter dust removal fans and related engineering applications in a fully-mechanized coal mining face
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Numerical simulations on airflow-dust diffusion rules with the use of coal cutter dust removal fans and related engineering applications in a fully-mechanized coal mining face

机译：气流粉尘扩散规则的数值模拟，采用煤切割机除尘风机及相关工程应用在齐全的煤炭挖掘面上

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摘要

In order to achieve effective dust suppression during coal cutting process in a fully-mechanized coal mining face by using coal cutter dust removal fans, this study first conducted numerical simulations on the airflow-dustmigration rules. Then, by combining simulation results with experimental measurements and field tests, a novel hydraulic axial-flow dust coal cutter removal fan was developed. Simulation results demonstrated that, during the coal cutting process, high-concentration dust clusters exceeding 1000 mg/m(3) were produced 0-20 m away from the coal cutter on the leeward side, which then spread to the operating space along the foot-way. After using dust removal fans, the concentration of the dust clusters on the leeward side of the coal cutter was reduced to below 500 mg/m(3). The dust removal fans were then applied to the 3up705 fully-mechanized coal mining face at seven-five Coal Mine for field measurements. According to the measured results, the use of these dust removal fans can effectively reduce the dust concentration in the operating region around the coal cutter, and the dust removal rates of total dust and respirable dust reached up to 66.5% and 61.8%, respectively. Therefore, the dust removal fans performed well in terms of dust suppression in fully-mechanized coal mining faces. (C) 2018 Elsevier B.V. All rights reserved.
机译：为了通过使用煤切割机除尘风扇在齐全的煤炭挖掘面上实现有效的粉尘抑制，本研究首先对气流除尘规则进行了数值模拟。然后，通过将仿真结果与实验测量和现场测试相结合，开发了一种新型液压轴流粉尘煤切割器去除风扇。仿真结果表明，在煤切割过程中，超过1000mg / m（3）的高浓度粉尘簇从煤层上的煤切割侧产生0-20米，然后沿着脚部蔓延到操作空间-道路。使用除尘风扇后，煤切割器的背风侧的粉尘簇的浓度降至500mg / m（3）以下。然后将除尘风扇施加到七五煤矿的3up705齐全的煤矿面，以进行现场测量。根据测量结果，使用这些除尘风扇可以有效地降低煤切割机周围的手术区域中的粉尘浓度，并且总粉尘的除尘率和可吸尘率分别达到66.5％和61.8％。因此，除尘风扇在齐全的煤炭采矿面上的灰尘抑制方面表现良好。 （c）2018 Elsevier B.v.保留所有权利。

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