綜掘面徑向分風(fēng)與壓風(fēng)配比對風(fēng)幕阻塵的影響
[Abstract]:In order to clarify the effect of the ratio of radial air distribution of wall-attached wind tube and tunnel pressure air ratio on wind curtain dustproof, an equal proportion physical model of 2 脳 5082 fully mechanized excavation face in Sanjiahe Coal Mine was established, and the FLUENT software was used to calculate the pressure air volume Q of 350 ~ 600 m ~ (3) ~ (3) 路min ~ (- 1). Numerical simulation of air flow migration and dust diffusion was carried out under the condition that the ratio of radial air volume to pressure air volume B was 50% ~ 90%. The results show that the decrease of Q and the increase of B are beneficial to the formation of dust-resistant wind curtain in the head-on area, and the dust-blocking ability of the head-on wind field is also enhanced. When Q = 350 / 400 m / min, B = 80% and Q = 450 m / min, B = 90%, and B = 90%, an effective dust screen can be formed in the front cross-section space of the driver, and an effective dust screen can be formed in the front cross-section space of the driver when Q = 350 / 400 m / min, B = 450 m / min and B = 90% / 2 / 2, and the production conditions are similar to their production conditions. When Q is 350 m ~ 3 min and B is 90%, the effect of wind screen dust suppression is the best. The numerical simulation results have been applied to the engineering application of the 2x5082 fully mechanized excavation face. The measured results show that the numerical simulation results are more accurate. The dust-proof curtain formed by the wall-attached wind tube can control the high-concentration dust above 50mg/m~3 in the roadway space less than 10 m away from the headhead, thus effectively improving the working environment of the fully mechanized excavation area.
【作者單位】: 山東科技大學(xué)礦山災(zāi)害預(yù)防控制省部共建國家重點(diǎn)實(shí)驗(yàn)室培育基地礦業(yè)與安全工程學(xué)院;
【基金】:國家自然科學(xué)基金煤炭聯(lián)合基金重點(diǎn)項(xiàng)目(U1261205) 國家自然科學(xué)基金青年基金項(xiàng)目(51404147) 山東科技大學(xué)研究生科技創(chuàng)新項(xiàng)目(SDKDYC170101)
【分類號(hào)】:TD714.4
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