压气储能衬砌洞室热-力耦合响应与损伤演化数值模拟

魏亮; 杨继盛; 邹永涛; 陈艳明; 李鹏; 王志

doi:10.19666/j.rlfd.202509079

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压气储能衬砌洞室热-力耦合响应与损伤演化数值模拟

更新时间：2026-06-12

- 压气储能衬砌洞室热-力耦合响应与损伤演化数值模拟
- Thermal Power Generation Vol. 55, Issue 4, Pages: 30-40(2026)
- 作者机构：
  
  1. 青海龙源新能源有限公司
  2. 中国电建集团中南勘测设计研究院有限公司
  3. 郑州大学力学与安全工程学院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202509079
  CLC： TK02;TU37
- Published：2026
- 稿件说明：
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[1]魏亮,杨继盛,邹永涛,等.压气储能衬砌洞室热-力耦合响应与损伤演化数值模拟[J].热力发电,2026,55(04):30-40.
[1]魏亮,杨继盛,邹永涛,等.压气储能衬砌洞室热-力耦合响应与损伤演化数值模拟[J].热力发电,2026,55(04):30-40. DOI： 10.19666/j.rlfd.202509079.

DOI：10.19666/j.rlfd.202509079.

摘要

【目的】压缩空气储能(CAES)技术是平抑可再生能源波动、支撑“双碳”目标实现的关键技术之一，其地下储气库在频繁充放气循环下的热力耦合响应与长期稳定性是工程安全的焦点。【方法】以张北县30 000 m

储气库工程为背景，建立了一个热-力-损伤多场耦合数值模型。该模型在COMSOL Multiphysics平台上，综合考虑了高压空气的非理想热力学行为、基于断裂能的混凝土损伤软化、钢筋增强效应以及围岩开挖损伤区(EDZ)的力学折减，系统模拟了充气8 h-保压4 h-放气4 h-保压8 h典型循环下洞室的工作性态。【结果】结果表明：洞室内气温剧烈波动(–30.68～70.18℃)，混凝土衬砌在较低内压(约1.9 MPa)下即萌生裂缝，并随压力升高最终形成环向等间距分布；钢筋在裂缝处出现应力集中，有效承担拉应力，实现了与混凝土的协同工作；围岩承担了约97.7%的内压，其刚度显著影响衬砌应力与洞室收敛变形，提高EDZ刚度可优化荷载传递路径；围岩塑性区在充气阶段于洞室顶底部显著发展，呈现出不可逆的变形特征。【结论】研究揭示了钢-钢筋混凝土-围岩复合结构在循环载荷下的协同工作机制与损伤演化规律，研究结论可为CAES人造洞室的设计优化与安全评估提供理论依据。

Abstract

[Objective

]

Compressed air energy storage(CAES) plays a critical role in stabilizing power systems with high penetration of renewable sources by mitigating intermittency and supporting the achievement of “dual-carbon” objectives. The thermo-mechanical response and damage evolution of an underground lined CAES cavern under repeated operational cycles are investigated based on a 30 000 m

demonstration project in Zhangbei County. [Methods

]

A coupled thermo-mechanical numerical model is developed using COMSOL Multiphysics

incorporating non-ideal thermodynamics of high-pressure air

a fracture energy-based damage model for concrete

the reinforc

ing effect of steel bars

and the mechanical behavior of the excavation damaged zone(EDZ). [Results

]

Simulations are conducted under a typical operational cycle comprising 8 h charging

4 h pressure maintenance

4 h discharging

and 8 h maintenance. The results reveal significant temperature fluctuations inside the cavern(-30.68～70.18 ℃). Concrete cracking is found to initiate at a low internal pressure(～1.9 MPa) and evolve into circumferentially spaced cracks. Steel reinforcement effectively carries tensile stress at crack locations

demonstrating effective collaboration with concrete. The surrounding rock is shown to bear approximately 97.7% of the internal pressure

with its stiffness significantly affecting lining stress and cavern convergence. Increased EDZ stiffness is observed to improve load transfer and stability. Plastic zones are found to develop predominantly near the cavern crown and bottom during charging

exhibiting irreversible deformation. [Conclusion

]

The synergistic behavior of the steel-concrete-rock composite system is elucidated

providing a theoretical basis for the design and safety assessment of CAES caverns.

关键词

Keywords

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