Abstract：The Wentang Gorge anticline is one of the anticlines in the broom-shaped dome pleats of Huaying Mountain, with abundant geothermal water resources of natural hot springs and artificial hot springs. Through statistics and analysis of the water quantity, water quality and aquifers of geothermal drillings on both sides of the anticline, the authors have identified that its main thermal storage aquifers are Member 2 and Member 4 of Jialingjiang Formation, and its secondary thermal storage aquifers are Member 1 and Member 3 of Jialingjiang Formation. The main hydrochemical type is sulfate type, but the conditions in the two wings of the anticline are different. The equivalent concentration ratio of magnesium to calcium ions is less than 1, which indicates that the chemical composition of the geothermal water is mainly from limestone aquifer. The water quality and quantity were controlled by the geological structure. The Wentang Gorge anticline has the characteristic of layered structure which includes thermal reservoir cap rocks, thermal reservoir and lower thermal reservoir insulation and confining bed, and the thermal storage temperatures for the two wings of the anticline are similar. The thermal storage temperature is between 26.42 ℃ and 51.7 ℃ at 1 700-2 000 m depth according to the geophysical logging data, with an increasing trend from north to south. This research would provide some references and guide for further exploration and exploitation of thermal water resources in Wentang Gorge.
[1] 罗云菊,刘东燕,刘新荣.重庆打造“温泉之都”的可行性分析[J].重庆大学学报:自然科学版,2007,30(1):147-151. Luo Y J,Liu D Y,Liu X R.Feasibility analysis of exploitation“City of Hot Spring” in Chongqing[J].J Chongqing Univ:Nat Sci Ed,2007,30(1):147-151. [2] 程群,杨华林,曾敏.重庆市主城区岩溶地热水资源的形成与保护[J].中国岩溶,2015,34(3):217-227. Cheng Q,Yang H L,Zeng M.The formation and protection of Karst geothermal water resources in the main urban area of Chongqing[J].Carsolog Sin,2015,34(3):217-227. [3] 曾敏. 重庆温泉分布及类型研究[J].地下水,2013,35(5):4-7. Zeng M.Study on hot spring distribution and types in Chong-qing[J].Ground Water,2013,35(5):4-7. [4] 宋志,倪化勇,姜月华,等.成渝城市群主要地质资源禀赋与绿色产业发展[J].中国地质调查,2019,6(5):74-82. Song Z,Ni H Y,Jiang Y H,et al.Geological resources endowment and green industry development of Chengdu-Chongqing Urban Agglomeration[J].Geol Sur China,2019,6(5):74-82. [5] 杨雷,肖琼,沈立成.重庆市温塘峡背斜地下热水资源特征研究[J].湖南师范大学自然科学学报,2011,34(5):86-91. Yang L,Xiao Q,Shen L C.Characteristics of geothermal water resources in Wentang valley anticline in Chongqing[J].J Nat Sci Hunan Norm Univ,2011,34(5):86-91. [6] 肖琼,杨雷,蒲俊兵,等.重庆温塘峡背斜地表水-地下水-浅层地热水中硫同位素的环境指示意义研究[J].地质学报,2016,90(8):1945-1954. Xiao Q,Yang L,Pu J B,et al.The environmental significance of sulfur isotope in surface water-ground water-shallow thermal water in Wentang Gorge anticline,Chongqing,China[J].Acta Geol Sin,2016,90(8):1945-1954. [7] 杨雷,肖琼,沈立成,等.不同地质背景地热系统水-岩作用下温泉水的地球化学特征:以重庆市温塘峡背斜温泉、滇东小江断裂带温泉为例[J].中国岩溶,2011,30(2):209-215. Yang L,Xiao Q,Shen L C,et al.Hydrogeochemical features of hot spring under water-rock processes of different geologic conditions:A case in the Wentangxia hot spring of Chongqing and the hot spring at Xiaojiang fault zone of the East Yunnan[J].Carsolog Sin,2011,30(2):209-215. [8] 王贵玲,张薇,蔺文静,等.全国地热资源调查评价与勘查示范工程进展[J].中国地质调查,2018,5(2):1-7. Wang G L,Zhang W,Lin W J,et al.Project progress of survey,evaluation and exploration demonstration of national geothermal resource[J].Geol Sur China,2018,5(2):1-7. [9] 李东升,刘东升.重庆地热水资源热储构造与径流补给[J].河海大学学报:自然科学版,2011,39(4):372-376. Li D S,Liu D S.Geothermal reservoir structure and runoff flow recharge of geothermal water resources in Chongqing City[J].J Hohai University:Nat Sci,2011,39(4):372-376. [10] 肖琼,沈立成,杨雷,等.重庆北温泉地热水碳硫同位素特征研究[J].水文地质工程地质,2013,40(4):127-133. Xiao Q,Shen L C,Yang L,et al.Environmental significance of carbon and sulfur isotopes of the North hot spring in Chong-qing[J].Hydrogeol Eng Geol,2013,40(4):127-133. [11] 拓明明,周训,郭娟,等.重庆温泉及地下热水的分布及成因[J].水文地质工程地质,2018,45(1):165-172. Tuo M M,Zhou X,Guo J,et al.Occurrence and formation of the hot springs and thermal groundwater in Chongqing[J].Hydrogeol Eng Geol,2018,45(1):165-172. [12] 肖琼,沈立成,杨雷.地下热水的来源与补给机制分析:以重庆北温泉为例[J].重庆大学学报,2015,38(4):91-103. Xiao Q,Shen L C,Yang L.Analysis on origin and recharge mechanism of geothermal water:A case study of Beiwenquan hot spring in Chongqing,China[J].J Chongqing University,2015,38(4):91-103. [13] 钱会,马致远.水文地球化学[M].北京:地质出版社,2005:55. Qian H,Ma Z Y.Hydrogeochemistry[M].Beijing:Geological Publishing House,2005:55. [14] 张彦普. 重庆市东温泉地热地质特征及成因模式探讨[J].地下水,2018,40(1):36-39,72. Zhang Y P.Discussion about the geothermal geological characte-ristics and genetic model of Dongwenquan in Chongqing City[J].Ground Water,2018,40(1):36-39,72.
2021, Vol. 8 
