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设置岩粉棚应遵守哪些规定? | 2011-8-4 12:43:00
设置岩粉棚应遵守哪些规定?
(1)岩粉棚分轻型岩粉棚和重型岩粉棚。主要岩粉棚的岩粉用量,按巷道断面积计算,为400千克/立方米;辅助岩粉棚为200千克/立方米。
(2)岩粉棚的排间距离,轻型棚为1.0~
(3)堆岩粉的平台与侧帮立柱(或侧帮)的空隙不小于50毫米,岩粉表面与顶梁(顶板)空隙不小100毫米。岩粉板距轨面不小于
(4)岩粉棚与工作面的距离,必须保持60~
(5)岩粉极与台板及撑板之间,严禁用钉子固定,以利于煤尘爆炸时岩粉的翻落。
(6)岩粉棚上的岩粉每月至少进行一次检查和可燃物含量分析。当岩粉变潮、变硬、可燃物含量超过20%时,应立即更换,岩粉量减少时应立即补充。
(7)岩粉可燃物的组分不得超过5%;游离二氧化硅的组分不得超过10%;不含砷,五氧化二磷不超过0.01%;岩粉的粒度必须全部小于0.3毫米,其中70%以上小于0.075毫米,呈浅色。
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