唐山市滨海地区地下热水水化学特征及循环深度

牛兆轩; 牛雪; 张成龙; 陈东方; 邓志辉

doi:10.19388/j.zgdzdc.2022.06.11

唐山市滨海地区地下热水水化学特征及循环深度

中国地质调查局水文地质环境地质调查中心,河北保定 071051

基金项目: 中国地质调查局青年科学基金项目“青海共和盆地贵德—达连海地区干热岩资源调查评价(编号: DD20211336)”和“结构面影响下干热岩水力裂缝扩展行为特征及能量释放机制研究(编号: 42102353)”联合资助

详细信息

作者简介:
牛兆轩(1992—),男,工程师,主要从事区域地下水化学演化及深部地热(干热岩)相关研究工作。Email:niuzhaoxuan@mail.cgs.gov.cn。

通信作者:
张成龙(1988—),男,工程师,主要从事深部地下空间碳封存与储气储能及非常规油气资源评价研究工作。Email:zhangchenglong@mail.cgs.gov.cn。

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- 收稿日期: 2022-02-17
- 修回日期: 2022-10-26
- 刊出日期: 2022-12-19

Hydrochemical characteristics and circulation depth of geothermal water in coastal area of Tangshan City

Center for Hydrogeology and Environmental Geology Survey, China Geological Survey, Hebei Baoding 071051, China

摘要

摘要: 唐山市南部滨海地区地热资源丰富、种类齐全,但开发利用效率较低,通常以冬季海产品养殖等途径为主,项目单一、资源浪费严重。以唐山市南部滨海地区地热系统为研究对象,通过分析其地下热水的水化学特征,估算研究区的热储温度与循环深度。结果表明: ①唐山市滨海地区地下热水出露温度为26~86 ℃,属中低温地下热水,热水溶解性固体总量(total dissolved solids,TDS)为482~1 644 mg/L,pH值为8.25~9.15,为高矿化度弱碱性热水,水化学类型为HCO₃-Na型; ②研究区热储温度可分为60~70 ℃和90~100 ℃两个区间,分别代表不同的地热水循环系统,计算得到循环深度为1 500~1 800 m和2 400 m~2 700 m。唐山市滨海地区地热田属于中低温传导型地热系统,形成以馆陶组为主要热储层,深部燕山期高温花岗岩(干热岩)提供持续热源的地热系统; ③研究区水热型地热系统具有持续稳定的高温热源,但其具有循环深度大、远离补给区等特点,水交替循环缓慢,当地应建立完善的地热能开采管理体系,在高效开采清洁地热资源的同时,避免地热尾水影响环境、资源枯竭、地面沉降等生态环境问题。研究加深了对唐山市南部滨海地区水热型地热系统的认识,为区域地热资源的开发利用提供了一定的科学依据。
- 唐山市 /
- 水文地球化学 /
- 热储温度 /
- 循环深度 /
- 成因模式
Abstract: The southern coastal area of Tangshan City has abundant and complete geothermal resources, but the development and utilization efficiency of geothermal resources is low. The conventional application of geothermal resources is winter seafood breeding, which is too single and has caused serious resource waste. The geothermal system in the southern coastal area of Tangshan City was set as the research goal, and the water samples were selected to analyze the hydrochemical characteristics of geothermal water and estimate the thermal storage temperature and circulation depth in the study area. The results show that ①The exposed temperature of geothermal water in Binhai area of Tangshan City is 26~86 ℃, belonging to the medium and low temperature. The total dissolved solid (TDS) of the geothermal water is between 482 and 1 644 mg/L, with pH of 8.25~9.15, belonging to the high-salinity and weak-alkaline thermal water, and the chemical type is HCO₃-Na. ② The thermal storage temperature in the study area can be divided into two ranges, about 60~70 ℃ and about 90~100 ℃, respectively, representing two geothermal water circulation systems. The calculated circulation depths are about 1 500~1 800 m and 2 400~2 700 m. The geothermal field in the Binhai area of Tangshan City is geothermal system of medium-low temperature conduction, forming a geothermal system with the Guantao Formation as the main thermal reservoir. And the deep Yanshanian high-temperature granite (HDR) provides a continuous heat source. ③ The hydrothermal geothermal system in the study area has a continuous and stable high temperature heat source, however, it still has characteristics of large circulation depth, far away from the recharge area, making the water alternately circulates slowly. It is suggested that complete specification of geothermal exploration should be established to avoid effects of geothermal tail water on the environment, resource depletion and land subsidence during exploiting clean geothermal resources. This research would deepen the understanding of the thermal geothermal system in the southern coastal area of Tangshan City, and provide certain scientific basis for the development and utilization of regional geothermal resources.
- Tangshan City /
- hydrogeochemistry /
- thermal storage temperature /
- circulation depth /
- genetic model

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参考文献(32)

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唐山市滨海地区地下热水水化学特征及循环深度

作者简介: 牛兆轩(1992—),男,工程师,主要从事区域地下水化学演化及深部地热(干热岩)相关研究工作。Email:niuzhaoxuan@mail.cgs.gov.cn。

通信作者: 张成龙(1988—),男,工程师,主要从事深部地下空间碳封存与储气储能及非常规油气资源评价研究工作。Email:zhangchenglong@mail.cgs.gov.cn。

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Hydrochemical characteristics and circulation depth of geothermal water in coastal area of Tangshan City

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出版历程

目录

作者简介:
牛兆轩(1992—),男,工程师,主要从事区域地下水化学演化及深部地热(干热岩)相关研究工作。Email:niuzhaoxuan@mail.cgs.gov.cn。

通信作者:
张成龙(1988—),男,工程师,主要从事深部地下空间碳封存与储气储能及非常规油气资源评价研究工作。Email:zhangchenglong@mail.cgs.gov.cn。