深层地热能开采与储能系统模拟研究  

Research on deep geothermal energy exploitation and storage system

作　　者：王佳铖 赵志宏[1] 陈进帆 贺洁 周露明 谭现锋 WANG Jiacheng;ZHAO Zhihong;CHEN Jinfan;HE Jie;ZHOU Luming;TAN Xianfeng(School of Civil Engineering,Tsinghua University,Beijing 100084,China;Shandong Provincial Lunan Geology and Exploration Institute,Jining 272100,Shandong,China)

机构地区：[1]清华大学土木工程系,北京100084 [2]山东省鲁南地质工程勘察院,山东济宁272100

出　　处：《隧道与地下工程灾害防治》2024年第1期84-93,共10页Hazard Control in Tunnelling and Underground Engineering

基　　金：国家重点研发计划课题资助项目(2021YFB1507302)

摘　　要：为研究深层地热能常规开采与储能相结合的系统在可持续开采条件下的性能,共定义7个评价指标,其中热突破时间、水位降深和地表沉降用于评价深层地热能的可持续开采,可采地热能、储存能量、能量增益系数和能量回收率用于评价系统的储能运行效果。利用井-储系统多场耦合数值模拟方法,基于鄄城地热田的两采一灌地热井系统,解释季节性地热开采和储能情况下的深层热储热-水-力多场耦合过程,验证所提出的评价指标的合理性与适用性。结果表明:在常规地热开采的基础上增加夏季地热储能后,冬季可采地热能增加约360%,该系统可满足热突破时间、水位降深和地表沉降这3个可持续开采评价指标的要求。建议在未来的地热开发过程中加入储能,促进更大规模和更高质量地开发利用深层地热能。To study the performance of system combining common development and energy storage of deep geothermal energy under sustainable development conditions,seven evaluation criteria were defined.Thermal breakthrough time,water level and vertical displacement were used to assess the sustainable development of deep geothermal energy,and total recoverable energy,stored energy,energy gain coefficient and energy recovery efficiency were used to assess the operating performance of proposed system.Based on the well system which consists of two production wells and one injection well in Juancheng geothermal field,the coupled thermo-hydro-mechanical processes subject to seasonal exploitation and storage were demonstrated and the rationality and applicability of proposed evaluation criteria were validated,using the integrated geothermal reservoir model.The results showed that recoverable heat energy could increase about 360%by adding artificial thermal storage into common geothermal reservoir development,and the proposed system could meet the sustainable development demands of thermal breakthrough time,water level and vertical displacement.It is strongly recommended to add energy storage into the future geothermal reservoir development system,which promotes the development and utilization of urban deep geothermal energy on a larger scale and with higher quality.

关 键 词：地热储能 评价体系 可持续开采 多场耦合 

分 类 号：P314[天文地球—固体地球物理学]