盐岩地下新能源储备库高频注采热力耦合效应对围岩长期变形的影响  

INFLUENCE OF HIGH-FREQUENCY THERMOMECHANICAL COUPLING EFFECT ON LONG-TERM DEFORMATION OF THE SALT ROCK RENEWABLE ENERGY STORAGE

作　　者：张宁 王赐佳 邓树新[3] ZHANG Ning;WANG Cijia;DENG Shuxin(College of Transportation Engineering,Nanjing Tech University,Nanjing 211816,China;School of Science,Nanjing University of Science and Technology,Nanjing 210094,China;School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京工业大学交通运输工程学院,南京211816 [2]南京理工大学理学院,南京210094 [3]南京理工大学机械工程学院,南京210094

出　　处：《力学与实践》2024年第2期323-331,共9页Mechanics in Engineering

基　　金：国家自然科学基金项目(72271125)资助。

摘　　要：盐岩因其致密性被公认为地下储能的良好介质,随着我国双碳战略的提出,利用盐岩进行地下新能源存储备受关注。盐岩新能源储备库运营过程中的高频注采造成了盐岩溶腔温度和应力场的高频往复。本文对高频注采效应下盐岩新能源储库的长期形变进行了热力耦合计算,并与传统能源储库的变形过程进行了对比。结果表明:新能源储库在考虑热力耦合情况下围岩最大位移增大7.8%,相较于传统能源储库,热效应对新能源储备库的影响更为显著,在新能源储库的稳定性评估中应充分考虑热效应的影响。Salt rock is recognized as an ideal medium for underground energy storage because of its integrity.With the proposal of dual-carbon strategy,salt rock for underground renewable energy storage has attracted much attention.However,the high-frequency injection and production during the salt rock renewable energy storage operation result in the high-frequency variation of the temperature and stress field in the salt cavern.In this article,the thermal-mechanical coupling simulation of salt rock renewable energy storage has been conducted to acquire the long-term deformation characteristics under high-frequency injection and production,which are compared to the deformation of traditional salt rock energy storage.The results show that the maximum displacement of the surrounding rock increases by 7.8%when thermal coupling is considered in the renewable energy storage.Compared to the traditional energy storage,the thermal effect on the renewable energy storage is more significant.The influence of the thermal effect should be concerned in the stability assessment of the renewable energy storage.

关 键 词：盐岩 储气库 热力耦合 变形特性 

分 类 号：O37[理学—流体力学]