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基于多重分形奇异性理论的瓦斯地质规律预测方法——以淮南矿区潘一矿为例
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  • 英文篇名:Prediction method of methane geological law based on the multifractal singularity theory:An example from the Panyi Coalmine,Huainan coalfield,China
  • 作者:李云波 ; 张腾飞 ; 宋党育 ; 张玉贵
  • 英文作者:LI Yunbo;ZHANG Tengfei;SONG Dangyu;ZHANG Yugui;Institute of Resources and Environment,Henan Polytechnic University;Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region;State Key Laboratory Cultivation Base for Gas Geology and Gas Control (Henan Polytechnic University);
  • 关键词:构造煤 ; 突出预测 ; 瓦斯含量 ; 构造曲率 ; 非常规天然气
  • 英文关键词:tectonically deformed coal;;outburst prediction;;gas content;;structure curvature;;unconventional gas
  • 中文刊名:MTXB
  • 英文刊名:Journal of China Coal Society
  • 机构:河南理工大学资源与环境学院;中原经济区煤层(页岩)气河南省协同创新中心;河南省瓦斯地质与瓦斯治理重点实验室(河南理工大学);
  • 出版日期:2018-12-15
  • 出版单位:煤炭学报
  • 年:2018
  • 期:v.43;No.291
  • 基金:国家自然科学基金青年基金资助项目(41602175);国家自然科学基金面上基金资助项目(41772162);; 中国博士后科学基金资助项目(2015M572104)
  • 语种:中文;
  • 页:MTXB201812022
  • 页数:11
  • CN:12
  • ISSN:11-2190/TD
  • 分类号:184-194
摘要
煤层瓦斯赋存受多期、多种地质因素制约,具有区域分区分带、局部强烈非均衡性叠加特征,其中局部奇异性是造成瓦斯富集异常及煤与瓦斯突出致灾的主要原因。通过借鉴和利用多重分形奇异性理论建立了瓦斯地质规律预测新方法,并以淮南矿区潘一矿13-1煤层瓦斯地质研究为例,探讨了煤层瓦斯的奇异性特征及地质控制机理。研究发现:煤层瓦斯的非线性分布及局部富集特征与地质过程中的奇异性现象具有本质上的一致性,多重分形奇异性方法能够准确描述瓦斯地质规律的奇异性和突变性。通过潘一矿实例研究,揭示了煤层瓦斯赋存的奇异性特征,并将矿井瓦斯赋存分为正常区、逸散区和富集区,发现正常区与高富集区之间突变区易发生煤与瓦斯突出灾害;构造煤局部异常发育及高构造曲率反映出的强挤压应力环境是造成煤层瓦斯奇异性富集的主要控制性因素。
        The gas occurrence in coal seams is constrained by multiple phases and various geo-logical factors.The distribution of coal seam gas is characterized by regional zoning and local strong heterogeneity superposition.Local singularity is the main cause of gas accumulation anomalies and coal and gas outbursts.A new prediction method of gas geology law was established using the theory of multifractal singularity.By studying the 13-1 coal seam gas geology of Panyi Mine in Huainan Mining Area,the singularity of coal seam gas and its geological control mecha-nism had been discussed.The results show that the non-linear distribution and local enrichment characteristics of coal seam gas are essentially consistent with the singularity phenomenon in ge-ological processes. The multifractal singularity method canaccurately describe the singularity and mutability of gas geology.The singularity characteristics of 13-1 coal seam gas occurrence were revealed through the research of Panyi Mine.The gas distribution in mines was divided into three areas: normal area,dispersion area,and enrichment area.It was also found that the transition zone between the normal area and the high-enriched area is an area prone to coal and gas outbursts.The strong anomalous development of tectonically deformed coal and the strong squeezing stress en-vironment reflected by high structural curvature are the main controlling factors that cause coal seam gas accumulation to enrich.
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