直角拐角與障礙物對巷道瓦斯突出沖擊波傳播的影響
發(fā)布時間:2019-01-21 18:28
【摘要】:為了研究瓦斯突出沖擊波穿過直角拐角和障礙物時的動力演化特征,利用計算機模擬了突出沖擊波影響下巷道內壓力、速度和瓦斯?jié)舛确植。結果表明:拐角會對沖擊波壓力造成彈射,在波陣面處分別形成高壓區(qū)和低壓區(qū),相應產生漩渦區(qū)和加速區(qū)。沖擊波在障礙物附近湍流強度增加,在第2障礙物附近形成二次加速。隨著障礙物距離和數量的增加,障礙物對前端沖擊波強度影響越發(fā)減小,障礙物對沖擊波的激勵影響主要在后部。在巷道施工過程中應盡量避免巷道內的剛性突出物,并消除不必要的設備堆積。
[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.
【作者單位】: 河南工程學院安全工程系;河南工程學院計算機學院;
【基金】:河南省科技攻關基金資助項目(132102210448) 河南工程學院科技創(chuàng)新團隊建設經費資助項目(CXTD2014002)
【分類號】:TD713
本文編號: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.
【作者單位】: 河南工程學院安全工程系;河南工程學院計算機學院;
【基金】:河南省科技攻關基金資助項目(132102210448) 河南工程學院科技創(chuàng)新團隊建設經費資助項目(CXTD2014002)
【分類號】:TD713
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