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笔者重点对西宁盆地北西缘南门峡-台子地区地下热水的赋存条件、热储构造概念模型进行了讨论。基于实际资料,得出地处老爷山凸起与双树凹陷间斜坡带,具有“凹中凸”地质结构的南门峡-台子地热异常热储为新元古界克素尔组大理岩和白垩系民和组砂砾岩,地热地质条件好。提出了该区的热储概念模型是“层控热储-侧向径流补给-大地热流供热-深大断裂导热-低热导率岩层聚热”,且具一定的地热资源开发利用前景。
The author focuses on the extinction conditions of underground hot water in the Nanmenxia-Taizi area on the north western edge of Xining basin and the conceptual model of thermal storage structure. Based on the actual data, it is concluded that the geothermal anomalous thermal reservoir of the Nanmenxia-Taizi with the “concave-convex” geological structure is located in the slope zone between the Protuberance and the Shuangshu depression in the Neoproterozoic. Cretaceous Minhe Formation conglomerate, geothermal geological conditions are good. It is proposed that the conceptual model of thermal storage in this area is “layer controlled thermal storage - lateral runoff recharge - geothermal heat supply - deep fault thermal conductivity - low thermal conductivity rock formation”, and has certain prospect of geothermal resource development and utilization.