【摘要】：對淮北煤田祁東煤礦6個煤層的24個煤樣和12個氣樣的穩(wěn)定有機碳同位素分析,分別研究了煤和瓦斯中碳同位素的分布特征和變化趨勢,為不同煤層及瓦斯源分析提供理論依據(jù)。研究表明:祁東煤礦煤的δ13C為-25.11‰~-22.76‰,6-1煤層至9煤層碳同位素均值呈波動變化,可能受當(dāng)時成煤時期沉積環(huán)境的影響;瓦斯的δ~(13)C_1為-63.65‰~-52.51‰,表現(xiàn)出次生生物成因氣的變化特征,二氧化碳碳同位素特征(-22.61‰~-17.96‰)表明其均是煤熱解而來。
[Abstract]:The stable organic carbon isotopes of 24 coal samples and 12 gas samples from 6 coal seams in Qidong Coal Mine of Huaibei Coalfield are analyzed. The distribution characteristics and changing trends of carbon isotopes in coal and gas are studied respectively, which provides a theoretical basis for the analysis of different coal seams and gas sources. The results show that the 未 ~ (13) C of Qidong coal mine is-25.11 鈥，

本文編號：2504116