河南朱阳关-夏馆断裂带板厂矿区地热资源分布特征研究

Study on distribution characteristics of geothermal resources in Banchang mining area of Zhuyangguan-xiaguan fault zone in Henan Province

板厂矿区位于河南内乡县城北约60 km处,位于朱阳关-夏馆断裂带上,具有较好的地热成矿远景。通过2010-2019年在朱阳关-夏馆断裂带上开展的金、银等多金属矿勘查,在布设的ZK1882施工孔下的1450 m处测得水温为43.3℃,证实了板厂矿区赋存地热资源。在此基础上,结合矿区的地层、构造、岩浆岩及水文地质条件,进一步研究了矿区地热资源分布特点和地热资源成因,研究认为:朱阳关-夏馆断裂带是区域上重要的深大断裂带,其与北北西或北北东构造交汇部位,是地热勘查的有利区。分布在朱阳关-夏馆断裂带西端的卢氏县汤河裸浴场,常年水温49.5℃左右,时流量10 t,并含有硫、氟、钙等二十多种微量元素。而东部的南阳盆地内也已发现多处岩溶热水,水温43℃左右,时流量达40 t。后期可建立朱阳关-夏馆断裂带上的地热资源产出模型,指导断裂带上的地热资源勘查。

The Banchang mining area is located about 60 km north of Neixiang County,Henan,on the Zhuyangguan-Xiaguan fault zone,and has a good prospect of geothermal mineralization.Through the exploration of gold,silver and other polymetallic mines on the Zhuyangguan-Xiaguan fault zone from 2010 to 2019,the water temperature measured at 1450m under the ZK1882 construction hole was 43.3℃,which confirmed the existence of the Banchang mining area.Geothermal re⁃sources.On this basis,combined with the stratum,structure,magmatic rock and hydrogeological conditions of the mining are⁃a,the distribution characteristics of the geothermal resources and the genesis of the geothermal resources in the mining area were further studied.The study concluded that the Zhuyangguan-Xiaguan fault zone is an important regionally deep fault.The fault zone,which intersects with the NW or NNE structure,is a favorable area for geothermal exploration.Located at the western end of the Zhuyangguan-Xiaguan fault zone,the Tanghe Naked Bathing Beach in Lushi County has a water tempera⁃ture of 49.5℃throughout the year,an hourly flow of 10t,and contains more than 20 trace elements such as sulfur,fluorine,and calcium.Many karst hot waters have been discovered in the Nanyang Basin in the east,with a water temperature of about 43℃ and an hourly flow of 40t.In the later stage,a geothermal resource production model on the Zhuyangguan-xiaguan fault zone can be established to guide the exploration of geothermal resources on the fault zone.