热-流-固耦合条件下CAES储气库气渗特征及气密性分析——以广西崇左储气库为例

doi:10.3973/j.issn.2096-4498.2026.07.007

隧道建设（中英文） ›› 2026, Vol. 46 ›› Issue (7): 1460-1470.DOI: 10.3973/j.issn.2096-4498.2026.07.007

热-流-固耦合条件下CAES储气库气渗特征及气密性分析——以广西崇左储气库为例

戴洪军¹，刘益平¹，袁振²，廖峻慧²，张勇¹，蒋中明^{2， *}

（1. 中国能源建设集团江苏省电力设计院有限公司，江苏南京 211100；2. 长沙理工大学水利与海洋工程学院，湖南长沙 410114）

出版日期:2026-07-20 发布日期:2026-07-20
作者简介:戴洪军（1970—），男，江苏扬州人，2011年毕业于东南大学，管理科学与工程专业，博士，高级工程师，现从事工程项目管理与工程勘测工作。 E-mail： daihongjun@jspdi.com.cn。 *通信作者：蒋中明， E-mail： zzmmjiang@163.com。

Gas Seepage and Air Tightness of Underground Gas Storage Cavern for Compressed Air Energy Storage Under Thermal-Hydro-Mechanical Coupling Conditions: A Case Study of Chongzuo Gas Storage in Guangxi, China

DAI Hongjun¹, LIU Yiping¹, YUAN Zhen², LIAO Junhui², ZHANG Yong¹, JIANG Zhongming^{2, *}

(1. China Energy Engineering Group Jiangsu Power Design Institute Co., Ltd., Nanjing 211100, Jiangsu, China; 2. School of Hydraulic and Ocean Engineering, Changsha University of Science & Technology, Changsha 410114, Hunan, China)

Online:2026-07-20 Published:2026-07-20

摘要/Abstract

摘要： 为揭示长期充、放气循环运行条件下压缩空气储能地下储气库的气渗特性与气密性演化机制，以广西崇左储气库为工程案例，基于热-流-固耦合理论，结合压缩空气热力学理论，利用COMSOL Multiphysics平台建立能反映地下储气库实际运行动态过程的THM（thermal-hydro-mechanical coupling）全耦合数值模型。该模型同时考虑运行中压缩空气温度与压力的动态变化、高压空气泄漏、气体渗流与多孔介质变形之间的相互作用关系，以及由此导致的介质渗透率动态演化问题。研究结果表明： 1）长期运行工况下，储气库的气密性存在恶化风险，压缩空气单日泄漏量随运行周期持续增加，库内空气质量同步下降；设定工况下，气体单日泄漏率由初期的0.25%增至后期的1.36%，超出1%的安全阈值。2）渗流场在长期运行下持续演化，压缩空气的渗流范围、渗流压力、渗流速度随充放、气循环的进行而不断发展，呈现明显的时空非均匀性与扩散性。3）多场耦合能更准确地反映实际运行中气体的泄漏路径与热力响应，考虑渗流作用较未考虑时，围岩热影响范围显著扩大且局部温度更高。

关键词: 压缩空气储能, 地下储气库, 热-流-固耦合, 渗流, 热力学, 气密性

Abstract: To reveal the gas seepage characteristics and air tightness evolution of underground gas storage cavern for compressed air energy storage under long-term charge-discharge cycling, a case study is conducted on the Chongzuo Gas Storage test cavern in Guangxi, China. Based on the coupling theory of thermal-hydro-mechanical (THM) processes and the thermodynamic theory of compressed air, the COMSOL Multiphysics platform is used to establish a fully coupled THM numerical model that reflects the actual dynamic operation of underground gas storage caverns. The model simultaneously considers dynamic variations in the temperature and pressure of compressed air during operation, high-pressure air leakage, the interactive relationship between gas seepage and porous medium deformation, and the resulting dynamic evolution of medium permeability. The results obtained are as follows: (1) Under long-term operation, the air tightness of the gas storage cavern is at risk of deterioration. The daily leakage mass of compressed air continuously rises with operating cycles, accompanied by a simultaneous decrease in the mass of compressed air inside the cavern. Under the designated working condition, the daily gas leakage rate increases from 0.25% to 1.36% in the later stage, exceeding the safety threshold of 1%. (2) The seepage field evolves continuously under long-term operation: the seepage range, pressure, and velocity of the compressed air progressively change with the charge-discharge cycles, exhibiting remarkable spatiotemporal heterogeneity and diffusivity. (3) Multifield coupling accurately reflects the leakage path and thermal response of gas in actual operation. When considering seepage, the thermal influence zone in the surrounding rock expands considerably and the local temperature is higher than that when seepage is not considered.

Key words: compressed air energy storage, underground gas storage cavern, thermal-hydro-mechanical coupling, seepage, thermodynamics, air tightness

戴洪军, 刘益平, 袁振, 廖峻慧, 张勇, 蒋中明. 热-流-固耦合条件下CAES储气库气渗特征及气密性分析——以广西崇左储气库为例[J]. 隧道建设, 2026, 46(7): 1460-1470.

DAI Hongjun, LIU Yiping, YUAN Zhen, LIAO Junhui, ZHANG Yong, JIANG Zhongming. Gas Seepage and Air Tightness of Underground Gas Storage Cavern for Compressed Air Energy Storage Under Thermal-Hydro-Mechanical Coupling Conditions: A Case Study of Chongzuo Gas Storage in Guangxi, China[J]. Tunnel Construction, 2026, 46(7): 1460-1470.

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热-流-固耦合条件下CAES储气库气渗特征及气密性分析——以广西崇左储气库为例

Gas Seepage and Air Tightness of Underground Gas Storage Cavern for Compressed Air Energy Storage Under Thermal-Hydro-Mechanical Coupling Conditions: A Case Study of Chongzuo Gas Storage in Guangxi, China

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