Research on pore structure characteristics of gas coal in Fukang mining area
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摘要: 为了研究阜康矿区瓦斯的储存情况与抽采可行性，采用压汞法和低温液氮吸附法对比分析不同条件下煤的孔隙结构参数及其分布特征。分析结果表明，煤样中大孔和微孔占比较大，孔径较大的孔隙由两端开口的圆筒形孔及四边开放的平行板孔组成，开放性好，有利于瓦斯抽采利用；气煤煤样总孔容大于高变质程度煤样，孔隙结构有利于瓦斯赋存和放散；气煤孔隙的比表面积虽然小于高变质程度煤样，但其孔隙结构中小孔的比表面积占比较大，小孔为瓦斯吸附提供了较大空间，所以阜康矿区气煤也具有一定的瓦斯吸附能力，煤层瓦斯可以抽采利用。Abstract: In order to study gas storage and extraction feasibility in Fukang mining area, mercury intrusion method and liquid nitrogen adsorption method in low temperature were used to compare and analyze pore structure parameters and distribution characteristics of coal under different conditions.The analysis results show that large pores and micropores in coal samples account for a large proportion, the pores with large pore diameter are composed of cylindrical pores with open ends and parallel plate holes with four open sides, which has good openness and is beneficial to gas drainage and utilization;The total pore volume of gas coal samples is larger than that of high metamorphism coal samples, pore structure is conducive to the occurrence and release of gas; The specific surface area of gas coal pores is smaller than that of high metamorphic coal samples, but the specific surface area of small pores account for a large proportion in the pore structure, and small holes can provide large space for gas adsorption, so the gas coal in Fukang mining area also has certain gas adsorption capacity, coal seam gas can be extracted and utilized.
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期刊类型引用(2)
1. 门汝佳，雷志鹏，吝伶艳，张国栋，赵瑞雪，朱剑飞，许春雨，宋建成，田慕琴. 矿用乙丙橡胶电缆绝缘电热老化状态评估. 工矿自动化. 2019(04): 67-71 . 
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2. 周岩，王鹏，辛罡，李波，王德志. MQHOA优化算法能级稳定过程及判据研究. 电子学报. 2019(06): 1337-1343 . 百度学术
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