直角拐角与障碍物对巷道瓦斯突出冲击波传播的影响
发布时间：2019-01-21 18:28
【摘要】：为了研究瓦斯突出冲击波穿过直角拐角和障碍物时的动力演化特征,利用计算机模拟了突出冲击波影响下巷道内压力、速度和瓦斯浓度分布。结果表明:拐角会对冲击波压力造成弹射,在波阵面处分别形成高压区和低压区,相应产生漩涡区和加速区。冲击波在障碍物附近湍流强度增加,在第2障碍物附近形成二次加速。随着障碍物距离和数量的增加,障碍物对前端冲击波强度影响越发减小,障碍物对冲击波的激励影响主要在后部。在巷道施工过程中应尽量避免巷道内的刚性突出物,并消除不必要的设备堆积。
[Abstract]:In order to study the dynamic evolution characteristics of gas outburst shock wave passing through right corner and obstacle, the distribution of pressure, velocity and gas concentration in roadway under the influence of outburst shock wave was simulated by computer. The results show that the corner can eject the shock wave pressure and form the high pressure region and the low pressure zone at the front plane of the shock wave, and the vortex region and the acceleration zone will be generated accordingly. The turbulence intensity of shock wave increases near the barrier, and the second acceleration is formed near the second obstacle. With the increase of the distance and number of obstacles, the influence of obstacles on the intensity of the front shock wave decreases more and more, and the influence of obstacles on the shock wave is mainly in the rear. In the course of roadway construction, rigid protrusions should be avoided as far as possible and unnecessary equipment accumulation should be eliminated.
【作者单位】： 河南工程学院安全工程系;河南工程学院计算机学院;
【基金】：河南省科技攻关基金资助项目(132102210448) 河南工程学院科技创新团队建设经费资助项目(CXTD2014002)
【分类号】：TD713
本文编号：2412912
[Abstract]:In order to study the dynamic evolution characteristics of gas outburst shock wave passing through right corner and obstacle, the distribution of pressure, velocity and gas concentration in roadway under the influence of outburst shock wave was simulated by computer. The results show that the corner can eject the shock wave pressure and form the high pressure region and the low pressure zone at the front plane of the shock wave, and the vortex region and the acceleration zone will be generated accordingly. The turbulence intensity of shock wave increases near the barrier, and the second acceleration is formed near the second obstacle. With the increase of the distance and number of obstacles, the influence of obstacles on the intensity of the front shock wave decreases more and more, and the influence of obstacles on the shock wave is mainly in the rear. In the course of roadway construction, rigid protrusions should be avoided as far as possible and unnecessary equipment accumulation should be eliminated.
【作者单位】： 河南工程学院安全工程系;河南工程学院计算机学院;
【基金】：河南省科技攻关基金资助项目(132102210448) 河南工程学院科技创新团队建设经费资助项目(CXTD2014002)
【分类号】：TD713
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