Prediction of geotemperatures in coal-bearing strata and implications for coal bed methane accumulation in the Bide-Santang basin,western Guizhou,China

作     者：Chen Guo Yong Qin Dongmin Ma Zhaobiao Yang Lingling Lu Chen Guo;Yong Qin;Dongmin Ma;Zhaobiao Yang;Lingling Lu

作者机构：College of Geology and EnvironmentXi’an University of Science&TechnologyXi’an 710054China Stations for Post-doctoral Research of Geological Resources and Geological EngineeringXi’an University of Science and TechnologyXi’an 710054China Key Laboratory of CBM Resources and Reservoir Formation ProcessMinistry of EducationChina University of Mining&TechnologyXuzhou 221116China 

出 版 物：《International Journal of Mining Science and Technology》 (矿业科学技术学报（英文版）)

年 卷 期：2020年第30卷第2期

页      面：235-242页

核心收录：

学科分类：0819[工学-矿业工程] 0709[理学-地质学] 0808[工学-电气工程] 081903[工学-安全技术及工程] 08[工学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：This paper was jointly sponsored by a National Science and Technology Major Special Project of China(No.2016ZX05044) a Postdoctoral Science Foundation of China(No.2018M631181) a Key Project of the Natural Science Foundation of China(No.40730422).We thank all of the parties that contributed to this publication. 

主　　题：Geotemperature Gray sequence Geothermal gradient Heat damage Coal Coal bed methane 

摘      要：The geothermal fields of coal-bearing strata have become a key topic in geological research into coal and coal bed methane(CBM).Based on temperature data from 135 boreholes that penetrate the Upper Permian coal-bearing strata in the Bide-Santang basin,western Guizhou,the precisions of geothermal predictions made using a geothermal gradient model and a gray sequence GM(1,1)model are analyzed and compared.The results indicate that the gray sequence GM(1,1)model is more appropriate for the prediction of geothermal fields.The GM(1,1)model is used to predict the geothermal field at three levels with depths of 500,1000,and 1500 m,as well as within the No.6,No.16,and No.27 coal seams.The results indicate that the geotemperatures of the 500 m depth level are between 21.0 and 30.0°C,indicating no heat damage;the geotemperatures of the 1000 m depth level are between 29.4 and 44.7°C,indicating the first level of heat damage;and the geotemperatures of the 1500 m depth level are between35.6 and 63.4°C,indicating the second level of heat damage.The CBM contents are positively correlated with the geotemperatures of the coal seams.The target area for CBM development is identified.