瓦斯地质区划及瓦斯异常分析——以顺和煤矿二_(2)煤层为例  

Gas anomaly analysis and gas geological division of No.2_(2) coal seam in Shunhe Coal Mine

作　　者：韩松林 赵亚娟[2] 高琳 吕闰生[3] HAN Songlin;ZHAO Yajuan;GAO Lin;LYU Runsheng(Henan Energy aucl Chemical Industry Group Co.,Ltd.,Zhengzhou 476600,China;Department of Electronic Information,Yongcheng Vocational College,Yongcheng 476003,China;Institute of Resources&Environment,Henan Polytechnic University,Jiaozuo 454000,China)

机构地区：[1]河南能源化工集团有限公司,河南郑州476600 [2]永城职业学院电子信息工程系,河南永城476003 [3]河南理工大学资源环境学院,河南焦作454000

出　　处：《煤炭科学技术》2021年第11期150-156,共7页Coal Science and Technology

基　　金：河南省创新团队资助项目(17IRTSTHN025);国家自然科学基金资助项目(41572139)。

摘　　要：为提高煤与瓦斯突出矿井瓦斯有效分级管理水平和瓦斯分区防治技术水平,结合顺和煤矿地质条件和构造分布形态,基于瓦斯地质区划理论和瓦斯地质指标量化技术,运用数理统计学、瓦斯地质学等理论技术与方法,分析了顺和煤矿二_(2)煤层构造演化与瓦斯赋存的地质控制特征,探讨了影响瓦斯异常分布的地质影响因素,运用数量化理论Ⅰ筛选了影响瓦斯异常的主控因素,在此基础上建立了预测瓦斯异常区的预测模型并进行了有效性验证,对未采区进行了瓦斯地质区划。研究结果显示:顺和井田共划分6个瓦斯地质单元,边界大中型断层是控制瓦斯分区分带的单元边界;③号瓦斯地质单元局部瓦斯存在正异常,划分出2个瓦斯异常区,①和②号单元东部靠近岩浆侵入区瓦斯正异常,④和⑥号单元瓦斯负异常;基岩厚度、煤层顶板岩性和大型断层影响范围是局部瓦斯正异常的主控因素,基岩厚度和岩浆侵入是瓦斯负异常的主要因素;井田反相褶皱是控制煤层埋藏深度变化的主要因素。In order to improve the effective hierarchical management level and gas prevention technical level of mine gas zoning control,combining geological condition and geological structure distribution of Shunhe Coal Mine,based on the theory of gas geological regionalization and gas geological index quantification technology,using the theories and methods of mathematical statistics and gas geology,the geological structure evolution of No.2_(2) coal seam was analyzed.The geological control characteristics of gas occurrence and the geological influence factors affecting gas anomaly distribution were discussed.The crucial controlling factors affecting gas anomalies were screened according to quantitative theory Ⅰ.Based on this,a mathematic model to predict gas anomaly area was established and validated.Gas geological zoning was carried out in the unmined area.The study results showed that the boundary of large-medium faults were gas geological unit boundaries for controlling the gas zoning,the whole mine field was divided into six gas geological units,there were two partial positive gas anomalies zones in ③ unit and one positive zone near magmatic intrusion in the east of ① and ② units,and ④ and ⑥ unit were gas negative anomaly area.The lithology distribution of the coal seam roof,bed rock thickness and fault range in the mine field were the main controlling factors of gas anomalies.Bed rock thickness and magmatic intrusion are the main factors of gas negative anomaly,reverse folds control the buried depth of 2_(2) coal seam.

关 键 词：瓦斯异常 沉积演化 瓦斯地质单元 反相褶皱 

分 类 号：TD712[矿业工程—矿井通风与安全]