苏北浦南构造特征与地热资源靶区预测研究

Study on Structural Characteristics and Geothermal Resource Target Area Prediction in Punan of North Jiangsu

地热资源是重要的绿色能源矿产,变质岩地区的地热赋存条件与断裂构造关系及其密切.充分的构造研究工作可有效提高变质岩地区地热资源靶区预测的可靠性.综合分析地质—物探资料的基础上,采用可控源音频大地电磁测深法、地温测量和氡气测量等工作方法,通过地质—物探成果综合解释,查明了研究区的深部断裂特征和具体展布位置.经综合研究得到了本区构造发育,且热源、通道、储层和盖层等地热地质条件较为良好的结论,并在地质构造和地热条件良好部位预测了地热找矿靶区,为下一步的地热勘查开发提供了较为可靠的地质和物探依据,具有重要指导意义.

Geothermal resources are important green energy minerals,and the geothermal occurrence conditions in metamorphic rock areas are closely related to the fault structure.Sufficient tectonic research work can effectively improve the reliability of geothermal resource target prediction in metamorphic rock areas.Based on the comprehensive analysis of the basic geological and geophysical data,the controlled source audio magnetotelluric method(CSAMT),ground temperature measurement,radon gas measurement and other working methods were used,and through the comprehensive interpretation of geological-geophysical exploration results,the deep fault characteristics and specific distribution location in the study area had been identified.After comprehensive research,it was concluded that the structure was developed in this area and the geothermal geological conditions such as heat source,channel,reservoir,caprock were relatively good,and the geothermal prospecting target area was predicted at the location with favorable geological structure and geothermal conditions.This research work can provide a relatively reliable geological and geophysical basis for the next geothermal exploration and development,and thus has important guiding significance.