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為什么采空區必須及時封閉?

2016-02-25    來源:888    作者:中砼科技  瀏覽次數:1709
為什么采空區必須及時封閉?
   答:采空區必須及時封閉的主要原因有以下幾方面:(1)防止巷道向采空區漏風,避免為采空區內遺留的浮煤提供氧化自燃的條件,預防采空區內自燃發火。(2)防止由于大氣壓力的變化或采空區大面積頂板垮落,采空區內大量的高濃度瓦斯和有害氣體瞬間被擠壓出來,造成連通采空區巷道內的人員中毒窒息,甚至引發瓦斯爆炸事故。
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