| s New Roman'">采煤工作面有串聯(lián)通風(fēng)時(shí)，按其中一個(gè)最大需風(fēng)量計(jì)算。備用工作面也應(yīng)按上述要求，滿(mǎn)足瓦斯、二氧化碳、風(fēng)流溫度和風(fēng)速等規(guī)定計(jì)算需風(fēng)量，且不得低于其回采時(shí)需風(fēng)量的50％。 上一頁(yè) [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] [26] [27] [28] [29] [30] [31] [32] [33] [34] [35] [36] [37] [38] [39] |
