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同時采用穿層孔和順層孔預抽煤層瓦斯區域防突措施時,效果檢驗的鉆孔布置方式和檢驗指標如何選擇?

作者:煤礦安全網 2015-08-21 10:00 來源:煤礦安全網

同時采用穿層孔和順層孔預抽煤層瓦斯區域防突措施時,效果檢驗的鉆孔布置方式和檢驗指標如何選擇?

當同時采用穿層孔和順層孔預抽煤層瓦斯時,采用直接測定殘余瓦斯含量指標檢驗,兩種鉆孔布置都可以;采用殘余瓦斯壓力指標檢驗,應該選擇穿層鉆孔,并停止被檢驗區域的瓦斯抽采,以減小測定誤差。(見《防突規定》第53條)

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