摘要
鲁西南潜隆起深部岩溶热储埋深差异明显,本次研究以嘉祥潜凸起、鱼台凹陷为例,在区域地质研究、地面调查的基础上,在嘉祥潜凸起南部及鱼台凹陷分别施工1398 m及2309 m地热井两眼,综合地温场测量、地球物理勘探、地热井钻探、抽水试验、水质分析等手段,分析了该区岩溶热储赋存特征。鲁西南潜隆起中部断裂构造多为导水导热断裂,断层裂隙是研究区的主要热储层,放射性元素衰变产生的热量所占比例小于一般地区放射性的元素衰变热,煤系地层地温梯度大于2.3℃/100m,奥陶系地温梯度在4℃/100m左右;地热水中富含氟、锶、偏硼酸,均达到医疗价值浓度标准,地热单井的产能分别为4049.72 kW和1431.32 kW,地热水开采一年所获得热量与之相当的节煤量分别为7262.73 t/a和2686.79 t/a,开发前景较好。
The differences of karst heat storage and burial depth are obvious in the southwest of Shandong province.On the basis of regional geological research and ground survey,two geothermal wells of 1398m and 2309m have been constructed in the southern part of Jiaxiang uplift and Yutai depression.The characteristics of karst heat storage in the area have been analyzed by means of geothermal field measurement,geophysics exploration,geothermal well drilling,pumping test and water quality analysis.Most of the faults in the central part of the southwest of Shandong subduction uplift are water conducting and heat conducting faults,and the faults and fissures are main thermal reservoirs in the study area.The geothermal gradient of coal measures is more than 2.3℃/100m,and that of Ordovician is about 4℃/100m.The productivity of single geothermal well is 4049.72kW and 1431.32 kW respectively,and the equivalent coal saving capacity of geothermal water in one year is 7262.73t/a and 2686.79 t/a respectively.The results can provide some references for the exploitation and protection of geothermal resources in southwestern Shandong province.
作者
秦鹏
王振涛
韩淑敏
蒙永辉
李笑泉
常超鹏
王润生
QIN Peng;WANG Zhentao;HAN Shumin;MENG Yonghui;LI Xiaoquan;CHANG Chaopeng;WANG Runsheng(Shandong Provincial Territorial Spatial Ecological Restoration Center,Shandong Ji'nan 250013,China;Shandong Provincial Natural Resources Archive,Shandong Ji'nan 250013,China;Lunan Geo-engineering Exploration Institute(No.2 Geological Brigade of Shandong Provincial Bureau of Geology and Mineral Resources),Shandong Ji'ning 272100,China;Shandong Geophysical and Geochemical Exploration Institute,Shandong Ji'nan 250013,China)
出处
《山东国土资源》
2024年第3期109-115,共7页
Shandong Land and Resources
基金
山东省自然资源厅,山东省2019年度地质勘查项目“山东省鱼台凹陷地热资源调查评价”(鲁勘字〔2019〕9号)
山东省自然资源厅,山东省2021年度地质勘查项目“山东省嘉祥潜凸起南部地热资源调查评价”(鲁勘字〔2021〕9号)。
关键词
地热
岩溶热储
成因机制
鱼台凹陷
鲁西南潜隆起
Geothermal
karst geothermal reservoir
genetic mechanism
Yutai depression
southwest buried uplift in Shandong province
作者简介
秦鹏(1980-),女,山东临沂人,正高级工程师,主要从事水工环地质研究工作,E-mail:365375850@qq.com;通讯作者:李笑泉(1982-),男,山东日照人,工程师,主要从事水工环地质研究工作,E-mail:lixiaoquan@shandong.cn。
