苏中及其南部地区地热勘查物探方法  

Geophysical prospecting of geothermal resources in middle and southern Jiangsu Province

作　　者：王军成[1] 张作宏[1] 杨光[1] 孙平[1] 

机构地区：[1]江苏省地质勘查技术院,江苏南京210049

出　　处：《地质学刊》2017年第2期318-327,共10页Journal of Geology

基　　金：江苏省地质勘查基金项目"江苏省南京东郊地区地热资源调查"(苏财建[2015]65)

摘　　要：苏中及其南部是江苏地热能主要分布区,区内地热类型多、水量大、温度高、分布广、开发滞后,因此,对苏中及其南部地区开展不同深度的地热勘查与研究工作,尤其是在地热资源勘查中起重要作用的物探方法研究非常必要。通过对区域地热地质、区域地球物理场特征、时空及温度对岩石物性参数影响的分析,对区内浅层地温、中浅层地热、深成干热岩物探勘查方法进行了研究。分析认为:浅层地温能勘查应以电(磁)类方法为主;中浅部地热资源勘查以电磁法为主,地震微动技术为辅;干热岩资源勘查应以重力和磁法勘查为基础,以大地电磁法和地震微动法为主要勘查方法。通过2个有代表性的成功勘查实例,说明浅层地温能和中浅层地热物探勘查方案的可行性。The middle and southern Jiangsu Province is abundant in geothermal resources, which are featured with great variety,large amount of water, high temperature, wide distribution, but whose development is lagging behind. Therefore, it is necessary to carry out geothermal resources of different depths prospecting in the middle and southern Jiangsu Province, especially the vital geophysical prospecting. By studying the geothermal geology, regional geophysical field, the effect of space-time and temperature on physical parameters of rocks, the paper investigated the geophysical prospecting techniques of shallow geothermal resources, shallow-middle geothermal re- sources and deep dry-hot-rock. The result shows that： shallow geothermal prospecting should mainly use electric （magnetic） techniques; shallow-middle geothermal prospecting should mainly use electric magnetic methods, assisted with seismic microtremor; hot- and-dry prospecting should mainly use gravitational and magnetic prospecting of magnetotelluric method and seismic microtremor. Two typical prospecting examples were presented to illustrate the feasibility of geophysical prospecting of shallow geothermal resources and shallow-middle geothermal resources.

关 键 词：浅层地温 中浅层地热 深成干热岩 物探勘查 苏中及其南部 

分 类 号：P314.3[天文地球—固体地球物理学]