华北煤系变形特征与煤矿瓦斯赋存规律 |
| |
引用本文: | 王蔚,卫彦昭,贾天让,闫江伟. 华北煤系变形特征与煤矿瓦斯赋存规律[J]. 煤田地质与勘探, 2021, 49(6): 121-130. DOI: 10.3969/j.issn.1001-1986.2021.06.015 |
| |
作者姓名: | 王蔚 卫彦昭 贾天让 闫江伟 |
| |
作者单位: | 河南理工大学 应急管理学院,河南 焦作 454003;瓦斯地质与瓦斯治理省部共建国家重点实验室培育基地,河南 焦作 454003;河南理工大学 安全科学与工程学院,河南 焦作 454003;瓦斯地质与瓦斯治理省部共建国家重点实验室培育基地,河南 焦作 454003;河南理工大学 安全科学与工程学院,河南 焦作 454003 |
| |
基金项目: | 河南省科技攻关项目202102310221河南省科技攻关项目202102310619河南省高等学校重点科研项目20A430016 |
| |
摘 要: | 瓦斯既是煤矿灾害的致灾因素之一,又是重要的清洁能源,厘清煤系变形瓦斯赋存规律是煤矿瓦斯灾害预防和煤层气高效开发的基础。以华北煤系为研究对象,以构造演化及控制为主线,运用板块构造、构造演化和瓦斯赋存构造逐级控制等理论,系统研究华北煤系变形特征与煤矿瓦斯赋存规律。结果表明,华北板块处于三大构造域相互作用交接的中心,控制着华北板块的形成与演化,华北板块与周缘板块之间的相互作用制约煤系的形成、赋存和变形,控制构造煤的形成与分布,同时控制着煤矿瓦斯的生成、运移和保存;华北煤系变形强度具有由板缘向板内、由挤压型造山带向远离造山带减弱的趋势;构造煤的形成与分布和构造演化过程中煤系变形有较好的一致性,构造煤的发育程度也具有由板缘向板内以及由靠近挤压型造山带向远离造山带减弱的趋势,伸展构造带构造煤不发育,但伸展背景下形成的大型滑脱构造容易形成成层发育的构造煤;华北煤矿瓦斯分布具有明显的区带特征,可划分为7个高突瓦斯区和6个低瓦斯区,进一步划分为15个高(突)瓦斯带和13个低瓦斯带。研究成果对国家有的放矢的瓦斯治理和煤层气开发具有重要的指导意义。
|
关 键 词: | 华北煤系 地质构造 构造演化 构造煤 瓦斯赋存 |
收稿时间: | 2021-01-05 |
Deformation characteristics of coal measures and gas occurrence law of coal mines in North China |
| |
Abstract: | Gas is not only one of the important disaster-causing factors in coal mines, but also an important clean energy. Understanding the deformation characteristics of coal measures and the occurrence of gas is the basis for coal mine gas disaster prevention and coalbed methane development. Taking the North China coal measures as the research object, taking the tectonic evolution and control as the main line, using the theory of plate tectonics, tectonic evolution and step by step control of gas-occurring structures, the deformation characteristics of the North China coal-measures and the law of coal mine gas occurrence were systematically studied. The research results show that the North China Plate is at the center of the interaction and junction of the three major tectonic domains and controls the formation and evolution of the coal measures. The interaction between the North China Plate and the peripheral plates restricted the formation, occurrence and deformation of the coal-measure strata, controlled the formation and distribution of tectonic coal, thereby controlling the generation, migration and preservation of coal mine gas; The deformation strength of the North China coal measures has a tendency to weaken from the edge of the plate to the interior of the plate, from the compression orogenic belt to the far orogenic belt; The formation and distribution of coal measures are in good agreement with the deformation of coal measures in the process of tectonic evolution. The development degree of tectonic coal also has a tendency to weaken from the edge of the plate to the interior of the plate and from the nearby compression orogenic belt to the far the orogenic belt. The tectonic coal is not developed in the extending tectonic zones, but the large detachment structures formed under the extensional background is easy to form layered tectonic coal; The gas distribution in North China coal mines has obvious regional characteristics, which can be divided into 7 high gas outburst areas and 6 low gas areas, further divided into 15 high (abrupt) gas belts and 13 low gas belts. The research results have important guiding significance for targeted gas control and coalbed methane development. |
| |
Keywords: | |
本文献已被 万方数据 等数据库收录! |
| 点击此处可从《煤田地质与勘探》浏览原始摘要信息 |
|
点击此处可从《煤田地质与勘探》下载全文 |
|