中国地质调查2016,Vol.3Issue(6):26-31,6.
贵州西部威水背斜地热赋存规律及靶区预测研究
Geothermal occurrence regularity and target area prediction in Weishui Anticlinein,western Guizhou Province
摘要
Abstract
Weishui Anticline is close to the urban area of Liupanshui City,which has favorable geothermal geolog-ical conditions with the formation of low and middle temperature geothermal resources.So it is rich in potential ge-othermal resources.However,the geological structure conditions are complex.And we have not enough recogni-tion on the corresponding structure,type,burial conditions and spatial distribution of geothermal resources,so the region in the development and utilization of geothermal resources has not yet made a substantive breakthrough. The study of Weishui Anticline geothermal occurrence regularity and target prediction,it is supported by the re-sults of the preliminary exploration work.On the basis of the comprehensive analysis and arrangement of relevant exploration data and by analysis of Weishui Anticline geologic background,heating conditions,thermal reservoir structure,geothermal carrier and its migration and recharge,this paper clearly indicated that this area belongs to the low and middle temperature type controlled by buried depth condition.The heat source mainly comes from the natural temperature formation (i.e.geothermal gradient).The geothermal carrier is mainly based on the ground water,and the type of the thermal reservoir is mainly the type of the thermal reservoir.Combined with existing ge-othermal engineering construction,the key reasons that the project failed to achieve the expected effect were ana-lysed.It reveals that the heat reservoir layers are the Upper Devonian Raoshuo Formation (D3 y)and Wangcheng-po Formation (D3 w),and the Middle Devonian Dushan Formation (D2 d).According to the heat reservoir top boundary depth contour of Weishui Anticline,the authors carried out the target prediction.The theoretical conser-vative water temperature is 44.7 -59.7 ℃,and the stable geothermal water inflow is not less than 500 m3/d, which provides a basis for the further exploration and development of geothermal resources.关键词
威水背斜/靶区预测/地热/赋存规律/贵州西部Key words
Weishui Anticline/prediction of target area/geothermal/occurrence regularity/western Guizhou Province分类
天文与地球科学引用本文复制引用
汪磊,张海..贵州西部威水背斜地热赋存规律及靶区预测研究[J].中国地质调查,2016,3(6):26-31,6.基金项目
中国地质调查局“贵州乌蒙山区优势矿产资源综合调查评价(编号12120113052700)”项目资助。 ()