安全与环境工程2025，Vol.32Issue(4)：34-42,9.DOI:10.13578/j.cnki.issn.1671-1556.20241005
地应力对压气储能地下洞室衬砌结构力学响应的影响机制
Influence mechanism of geostress on mechanical response of liner structure of underground caverns for compressed air energy storage
摘要
Abstract
The pressure-diameter product of the underground caverns for compressed air energy storage is substantial,so the stress state of the sealing steel lining is of great significance for the long-term safe operation of the power station.Based on the ABAQUS platform,considering the material nonlinear characteristics and the contact nonlinearity between the sealing steel lining and the concrete lining,the influence mechanism of the initial geostress of the surrounding rock on the stress of the sealing steel lining and the damage development of the concrete lining is analyzed.The results are as follows:during the process of the side pressure coefficient increasing from 0.25 to 2.50,the stress peak of the sealing steel lining first decreases and then gradually increases.The high-stress zone of the sealing steel lining,the severe damage zone of the concrete lining,and the plastic zone of the surrounding rock all gradually shift from the top and bottom to the waist.When the side pressure coefficient is equal to 1.00,the stress of the structure and surrounding rock along the circumference is the most uniform.During the pressure-relief maintenance period,a gap forms between the top of the sealing steel lining and the concrete lining.The gap value first decreases and then slowly increases with the increase of the side pressure coefficient,but the sensitivity decreases when the side pressure coefficient exceeds 1.00.The influence mechanism of the surrounding rock geostress on the mechanical response of the lining structure mainly adjusts the circumferential stress state of the surrounding rock during the operation period,thereby changing the distribution of the surrounding rock plastic zone,and finally affecting the external constraint stiffness of the concrete lining and sealing steel lining.It is of reference value for this study to consider the influence of initial geostress in the technical demonstration of underground caverns for compressed air energy storage through numerical simulation methods.关键词
压气储能地下洞室/地应力/密封钢衬/混凝土损伤/数值模拟Key words
underground cavern for compressed air energy storage/geostress/sealing steel lining/concrete damage/numerical simulation分类
资源环境引用本文复制引用
雷豪杰,傅丹,伍鹤皋,王友,李聪..地应力对压气储能地下洞室衬砌结构力学响应的影响机制[J].安全与环境工程,2025,32(4):34-42,9.基金项目
国家自然科学基金项目(52179110) （52179110）
长江科学院开放研究基金项目(CKWV20231179/KY) （CKWV20231179/KY）
