| 马健,郭恒,姜冰,刘明明,张龙,徐伟祥.山东五里地区地热地质特征及控制因素[J].矿产勘查,2025,16(4):792-801 |
| 山东五里地区地热地质特征及控制因素 |
| Geothermal geological characteristics and controlling factors in Wuli Area, Shandong Province |
| 投稿时间：2023-02-13 |
| DOI：10.20008/j.kckc.202504010 |
| 中文关键词: 地热地质特征 控热因素 地热成因 山东五里 |
| 英文关键词: geothermal geological characteristics thermal control factors geothermal origin Wuli of Shandong |
| 基金项目:本文受山东省第四地质矿产勘查院2020年科技创新项目(KJ2011)、山东省地矿局2021年地质勘查与科技创新项目(KC202102)、2022年度山东省地矿局地质勘查引领示范与科技攻关项目(KC202206)联合资助。 |
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| 中文摘要: |
| 前人研究成果已揭示了热源、水源、通道、热储和盖层等因素对地热系统的控制作用，但针对鲁中山区中低温地热系统的研究仍较为薄弱，制约了该区地热资源的科学开发。本文通过总结山东省五里地区的地热地质条件及地温场特征，分析了对地热资源的形成分布起到控制作用的因素，探讨了地热资源形成模式。研究结果表明:山东五里地区属于传导型和断裂-深循环型相叠加中低温地热系统，地热水上升至地表过程中与浅层地下冷水发生了混合作用。研究区热源主要来源于地层中放射性生热元素的衰变生热和地壳深部；断裂构造为地热水的补给和运移提供了良好通道；热储类型以寒武系—奥陶系灰岩裂隙岩溶型层状热储为主，兼有裂隙带状热储特征；盖层为馒头组泥岩、泥灰岩。本研究工作确定了五里地区放射性生热与深部传导热的协同贡献，明确了西店—苏峪寺断裂作为深循环通道的关键作用，为同类中低温地热田的成因解析与靶区预测提供了范例。 |
| 英文摘要: |
| Previous studies have elucidated the controlling factors of geothermal systems, including heatsources, water sources, conduits, thermal reservoirs, and caprocks. However, research on medium-low temperature geothermal systems in the Luzhong Mountain area of Shandong Province remains limited, hindering the scientific ex-ploitation of geothermal resources in this region. This study systematically investigates the geothermal geologicalconditions and geothermal field characteristics of the Wuli area in Shandong Province, analyzes the controlling fac-tors influencing the formation and distribution of geothermal resources, and proposes a genetic model for geothermalresource formation. The results demonstrate that the Wuli area represents a medium-low temperature geothermalsystem superimposed by conductive and fault-controlled deep-circulation mechanisms. During ascent, geothermalwater undergoes mixing processes with shallow groundwater. The heat sources primarily derive from radioactive de-cay of heat-generating elements within strata and deep crustal heat flow. Fault structures act as critical pathways forgeothermal water recharge and migration. The thermal reservoirs are dominated by Cambrian-Ordovician limestonefractured-karst layered reservoirs, accompanied by fractured zonal reservoirs. The caprock consists of mudstonesand marls of the Mantou Formation. This study quantifies the synergistic contributions of radiogenic heat and deepconductive heat, and identifies the Xidian-Suyusi Fault as the principal deep-circulation conduit. These findingsprovide a methodological framework for genetic analysis and target prediction in analogous medium-low tempera-ture geothermal fields. |
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