|本期目录/Table of Contents|

[1]詹润,张文永,傅先杰,等.淮南煤田新集与罗连井田逆冲推覆构造变形差异性特征及对煤层气赋存的影响[J].地球科学与环境学报,2022,44(05):750-764.[doi:10.19814/j.jese.2022.02014]
 ZHAN Run,ZHANG Wen-yong,FU Xian-jie,et al.Different Deformation of Thrust Nappe Structure in Xinji and Luolian Coalfields of Huainan Area, Anhui, China and Its Influence on Occurrence of Coalbed Methane[J].Journal of Earth Sciences and Environment,2022,44(05):750-764.[doi:10.19814/j.jese.2022.02014]
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淮南煤田新集与罗连井田逆冲推覆构造变形差异性特征及对煤层气赋存的影响(PDF)
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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第44卷
期数:
2022年第05期
页码:
750-764
栏目:
沉积地质与油气勘探
出版日期:
2022-09-15

文章信息/Info

Title:
Different Deformation of Thrust Nappe Structure in Xinji and Luolian Coalfields of Huainan Area, Anhui, China and Its Influence on Occurrence of Coalbed Methane
文章编号:
1672-6561(2022)05-0750-15
作者:
詹润12张文永1傅先杰3孙贵1方惠京1顾承串4
(1. 安徽省煤田地质局勘查研究院,安徽 合肥 230088; 2. 中国科学技术大学 地球和空间科学学院,安徽 合肥 230026; 3. 中煤新集能源股份有限公司,安徽 淮南 232001; 4. 安徽理工大学 地球与环境学院,安徽 淮南 232001)
Author(s):
ZHAN Run12 ZHANG Wen-yong1 FU Xian-jie3 SUN Gui1FANG Hui-jing1 GU Cheng-chuan4
(1. Exploration Research Institute, Anhui Provincial Bureau of Coal Geology, Hefei 230088, Anhui, China; 2. School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, Anhui, China; 3.China Coal Xinji Energy Co. Ltd., Huainan 232001, Anhui, China; 4. School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, Anhui, China)
关键词:
逆冲推覆 构造变形 差异性 构造解析 煤层气 基底隆起 淮南煤田
Keywords:
thrust nappe structural deformation difference tectonic analysis coalbed methane basement uplift Huainan coalfield
分类号:
P618.11
DOI:
10.19814/j.jese.2022.02014
文献标志码:
A
摘要:
为进一步认识淮南煤田阜凤逆冲推覆构造带中段构造变形机制及对煤层气赋存的控制,指导下一步煤层气勘探开发,利用最新的煤田地质勘探与开发资料,通过详细的构造解析与对比,结合区域地质背景,分析了新集和罗连井田差异性逆冲推覆构造变形特征及其形成演化机制。利用Thermodel for Windows软件对新集与罗连井田含煤地层构造埋藏-热演化史进行了恢复模拟,揭示了构造变形对煤层气生成与分布的控制规律。结果表明:在印支期自南向北的推挤作用下,罗连井田表现为叠瓦扇状构造变形的特点,下伏原地系统构造变形较弱; 新集井田受煤系基底隆起阻挡,表现为双重逆冲推覆构造变形的特点,原地系统在纵弯褶皱变形中沿褶曲轴部形成了大量伸展性构造。新集与罗连井田含煤地层均经历了4个阶段的构造埋藏史与热演化史过程,但新集井田煤层变质程度与生气量明显偏高; 煤系基底隆起与构造变形结构空间耦合引起的古地温梯度变化,是控制新集与罗连井田煤层气差异生成、富集的根本原因; 新集与罗连井田现今煤层含气量空间分布与构造位置相关性明显,主要受构造变形程度与埋深影响。
Abstract:
In order to further understand the structural deformation mechanism of the middle section of Fufeng thrust nappe structural belt in Huainan coalfield and its control on the content of coalbed methane(CBM), and guide the exploration and development of CBM, the diversity characteristics of thrust nappe structural deformation, formation mechanism and its relationship with generation and distribution of CBM were revealed in Xinji and Luolian coalfields; through detailed structural analysis and comparison, combined with regional geological background, the latest geological data of coalfield exploration and production were used to reveal the control of tectonic deformation on generation and distribution of CBM; the burial-thermal evolution history of coal-bearing strata in Xinji and Luolian coalfields was simulated by Thermodel for Windows software. The results show that Luolian coalfield is characterized by imbricated fan structural deformation, and the in-situ system structural deformation is weak under the action of Indosinian pushing from south to north; affected by the uplift of coal-series basement, Xinji coalfield is characterized by double thrust nappe structure deformation, and a large number of extensional structures are formed along the crankshaft of the fold in the in-situ system during longitudinal flexural fold deformation; the coal-bearing strata in Xinji and Luolian coalfields experience four stages of structural burial and thermal evolution history, but the paleogeothermal gradient and coal metamorphism degree in Xinji coalfield are obviously higher; the variation of paleotemperature gradient caused by the coupling of coal-series basement uplift and deformation structure is the fundamental reason for the differential generation and enrichment of CBM in Xinji and Luolian coalfields; the spatial distribution of CBM in Xinji and Luolian coalfields is obviously correlated with the tectonic position, and mainly affected by the degree of structural deformation and burial depth.

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备注/Memo

备注/Memo:
收稿日期:2022-02-11; 修回日期:2022-03-28投稿网址:http:∥jese.chd.edu.cn/
基金项目:国家自然科学基金项目(41902212); 中煤新集能源股份有限公司重点科研项目(ZMXJ-LZ-JS-2020-16);
安徽省地质勘查基金项目(2021-1-12); 安徽省博士后研究人员科研活动项目(2020B417)
作者简介:詹 润(1986-),男,安徽淮南人,安徽省煤田地质局勘查研究院高级工程师,理学博士,E-mail:391541286@qq.com。
更新日期/Last Update: 2022-10-01