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首页> 外文期刊>Global and planetary change >Significance of basin asymmetry and regional groundwater flow conditions in preliminary geothermal potential assessment - Implications on extensional geothermal plays
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Significance of basin asymmetry and regional groundwater flow conditions in preliminary geothermal potential assessment - Implications on extensional geothermal plays

机译：盆地不对称性和区域地下水流动条件在初步地热潜在评估中的意义 - 对广大地热剧的影响

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摘要

Extensional domain type geothermal plays, as fertile targets for future resource development, consist of an orogen and an adjoining sedimentary basin of asymmetric physiographic and geologic setting. Preliminary geothermal potential, i.e. prospective geothermal regions, basin-scale flow patterns, heat transfer processes, temperature distribution and appearance of thermal springs were analyzed systematically by numerical simulations in groundwater basins with special emphasis on the effects of basin asymmetry. The importance of basin-scale regional groundwater flow studies in preliminary geothermal potential assessment was demonstrated for synthetic and real-life cases. A simulated series of simplified real systems revealed the effects of anisotropy, asymmetry of the topographical driving force for groundwater flow, basin heterogeneity and basal heat flow on heat accumulation, locations of thermal spring discharge and prevailing mechanisms of heat transfer. As a new aspect in basin-scale groundwater and geothermal studies, basin asymmetry was introduced which has a critical role in discharge and accumulation patterns, thus controlling the location of basin parts bearing the highest geothermal potential. During the reconnaissance phase of geothermal exploration, these conceptual, generalized and simplified groundwater flow and heat transport models can support the identification of prospective areas and planning of shallow and deep geothermal energy utilization, also with respect to reinjection possibilities. Finally, the scope of "geothermal hydrogeology" is defined in a scientific manner for the first time.
机译：扩展领域类型地热竞争，作为未来资源开发的肥沃目标，由orogen和一个不对称地质和地质环境的邻接沉积盆地组成。通过地下水盆地的数值模拟系统地分析了初步地热势，即前瞻性地热区，盆地尺度流动模式，热弹簧，温度分布和热弹簧的出现。盆地不对称的影响。综合和现实病例证明了盆地级区域地下水流程研究的重要性。一种模拟的简化实际系统系列揭示了各向异性，地形驱动力的各向异性的影响，地下水流动，盆地异质性和基础热流对散热，热弹簧放电的位置和热传递的普遍机制。作为盆地地下水和地热研究中的一个新方面，引入了盆地不对称，其在排出和累积模式中具有关键作用，从而控制盆地部件的位置具有最高的地热势。在地热勘探的侦察阶段，这些概念性，广义和简化的地下水和热传输模型可以支持识别前瞻性区域和浅层和深层地热能量利用规划，也相应于再影响可能性。最后，第一次以科学方式定义“地热水文地质”的范围。

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