水城煤田瓦斯赋存的构造逐级控制
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摘要
为认识水城煤田的瓦斯赋存特征,采用构造对瓦斯的逐级控制理论,分析了构造演化、现今构造组合样式及煤层的非均质性等对煤中瓦斯生成、运移和保存的控制。研究表明:研究区具有稳定的三角洲间湾成煤环境,为甲烷的生成提供了较好的物质基础。煤层沉积后经历了三期次的生烃作用,生成大量瓦斯。盆地隔挡式褶皱发育,对瓦斯赋存的控制作用可分为3种类型:宽缓简单向斜+良好封盖层,不对称向斜+良好封盖层,不对称陡立向斜+良好封盖层。埋藏较深的向斜核部煤变质程度较高,瓦斯含量一般较大。变形较大的构造部位煤体结构变形较严重,使得煤体具有更好的微观孔隙结构。
In order to recognize gas occurrence features in Shuicheng coalfield,the tectonic gradual control theory is adopted to systematically study the control role of tectonic evolution,the current tectonic combination type and coal seam heterogeneity on gas occurrence.The results show that the study area has a good sedimentary environment for coal seam,which provides a material basis for methane generation.After the seams have been deposited,there are three stages of hydrocarbon generation and a large amount of gas is generated.Ejective folds are developed,which control function on gas occurrence is divided into 3 types:simple syncline type with good capping layer,asymmetric syncline type with good capping layer,vertical asymmetric syncline type with good capping layer.The coal metamorphic degree of the deep syncline core is high,and the gas content is generally large.The coal body structure has a large deformation in the structural parts with larger deformation,which makes the coal body have a better micro pore structure.
In order to recognize gas occurrence features in Shuicheng coalfield,the tectonic gradual control theory is adopted to systematically study the control role of tectonic evolution,the current tectonic combination type and coal seam heterogeneity on gas occurrence.The results show that the study area has a good sedimentary environment for coal seam,which provides a material basis for methane generation.After the seams have been deposited,there are three stages of hydrocarbon generation and a large amount of gas is generated.Ejective folds are developed,which control function on gas occurrence is divided into 3 types:simple syncline type with good capping layer,asymmetric syncline type with good capping layer,vertical asymmetric syncline type with good capping layer.The coal metamorphic degree of the deep syncline core is high,and the gas content is generally large.The coal body structure has a large deformation in the structural parts with larger deformation,which makes the coal body have a better micro pore structure.
引文
[1]张迎新,李世超,朱育民,等.深部煤层瓦斯抽采的数值模拟与现场实验研究[J].黑龙江科技大学学报,2015,25(6):579-583.
[2]李金海,徐永红,王军飞.樊寨井田二_1煤层瓦斯含量主控因素研究[J].中国矿业,2017,26(8):129-132.
[3]黄政祥,龙祖根.贵州煤矿瓦斯地质规律研究[C]∥瓦斯地质研究进展2013.2013.
[4]黄政祥,覃木广,李浩荡,等.平沟煤矿16号煤层瓦斯地质规律分析[J].煤炭开采,2011,16(5):86-88.
[5]张金山,薛泽民,董红娟,等.我国煤层气资源产业发展现状及展望[J].煤炭技术,2016,35(12):316-318.
[6]贾天让,王蔚,闫江伟,等.贵州省煤矿瓦斯赋存构造控制规律与分带划分[J].地学前缘,2014,21(6):281-288.
[7]张子敏,吴吟.中国煤矿瓦斯赋存构造逐级控制规律与分区划分[J].地学前缘,2013,20(2):237-245.
[8]蒋天国,马樱燕,刘胜彪.云南老厂矿区煤层气地质条件[J].黑龙江科技大学学报,2015,25(1):26-30,45.
[9]方爱民,侯泉林,琚宜文,等.不同层次构造活动对煤层气成藏的控制作用[J].中国煤田地质,2005,17(4):15-20.
[10]沈玉林,秦勇,郭英海,等.黔西上二叠统含煤层气系统特征及其沉积控制[J].高校地质学报,2012,18(3):427-432.
[11]张超.华南晚二叠世层序—古地理与聚煤规律研究[D].北京:中国矿业大学(北京),2013.
[12]窦新钊.黔西地区构造演化及其对煤层气成藏的控制[D].北京:中国矿业大学(北京),2012.
[13]窦新钊,姜波,秦勇,等.黔西地区构造演化及其对晚二叠世煤层的控制[J].煤炭科学技术,2012,40(3):109-114.
[14]方爱民,侯泉林,琚宜文,等.不同层次构造活动对煤层气成藏的控制作用[J].中国煤田地质,2005,17(4):15-20.
[15]王怀勐.新疆某矿区瓦斯和煤自燃特征及其控制条件[J].黑龙江科技大学学报,2015,25(6):593-596.
[16]杨兆彪,秦勇,高弟.黔西比德-三塘盆地煤层群含气系统类型及其形成机理[J].中国矿业大学学报,2011,40(2):215-220,226.
[17]董国伟,胡千庭,王麒翔,等.隔档式褶皱演化及其对煤与瓦斯突出灾害的影响[J].中国矿业大学学报,2012,41(6):912-916.
[18]王怀勐,朱炎铭,李伍,等.煤层气赋存的两大地质控制因素[J].煤炭学报,2011,36(7):1129-1134.
[19]郭晨,卢玲玲.黔西煤层气成藏特性空间分异及其对开发的启示[J].煤炭学报,2016,41(8):2006-2016.
[2]李金海,徐永红,王军飞.樊寨井田二_1煤层瓦斯含量主控因素研究[J].中国矿业,2017,26(8):129-132.
[3]黄政祥,龙祖根.贵州煤矿瓦斯地质规律研究[C]∥瓦斯地质研究进展2013.2013.
[4]黄政祥,覃木广,李浩荡,等.平沟煤矿16号煤层瓦斯地质规律分析[J].煤炭开采,2011,16(5):86-88.
[5]张金山,薛泽民,董红娟,等.我国煤层气资源产业发展现状及展望[J].煤炭技术,2016,35(12):316-318.
[6]贾天让,王蔚,闫江伟,等.贵州省煤矿瓦斯赋存构造控制规律与分带划分[J].地学前缘,2014,21(6):281-288.
[7]张子敏,吴吟.中国煤矿瓦斯赋存构造逐级控制规律与分区划分[J].地学前缘,2013,20(2):237-245.
[8]蒋天国,马樱燕,刘胜彪.云南老厂矿区煤层气地质条件[J].黑龙江科技大学学报,2015,25(1):26-30,45.
[9]方爱民,侯泉林,琚宜文,等.不同层次构造活动对煤层气成藏的控制作用[J].中国煤田地质,2005,17(4):15-20.
[10]沈玉林,秦勇,郭英海,等.黔西上二叠统含煤层气系统特征及其沉积控制[J].高校地质学报,2012,18(3):427-432.
[11]张超.华南晚二叠世层序—古地理与聚煤规律研究[D].北京:中国矿业大学(北京),2013.
[12]窦新钊.黔西地区构造演化及其对煤层气成藏的控制[D].北京:中国矿业大学(北京),2012.
[13]窦新钊,姜波,秦勇,等.黔西地区构造演化及其对晚二叠世煤层的控制[J].煤炭科学技术,2012,40(3):109-114.
[14]方爱民,侯泉林,琚宜文,等.不同层次构造活动对煤层气成藏的控制作用[J].中国煤田地质,2005,17(4):15-20.
[15]王怀勐.新疆某矿区瓦斯和煤自燃特征及其控制条件[J].黑龙江科技大学学报,2015,25(6):593-596.
[16]杨兆彪,秦勇,高弟.黔西比德-三塘盆地煤层群含气系统类型及其形成机理[J].中国矿业大学学报,2011,40(2):215-220,226.
[17]董国伟,胡千庭,王麒翔,等.隔档式褶皱演化及其对煤与瓦斯突出灾害的影响[J].中国矿业大学学报,2012,41(6):912-916.
[18]王怀勐,朱炎铭,李伍,等.煤层气赋存的两大地质控制因素[J].煤炭学报,2011,36(7):1129-1134.
[19]郭晨,卢玲玲.黔西煤层气成藏特性空间分异及其对开发的启示[J].煤炭学报,2016,41(8):2006-2016.