内衬式地下洞室群氢能存储隆起破坏机制分析

doi:10.13722/j.cnki.jrme.2023.0285

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摘要内衬式地下洞室群的隆起破坏机制分析对于提高氢气存储容量和储库安全性具有重要意义。基于Hoek-Brown强度准则和极限分析上限方法，推导分层岩体中内衬式地下洞室群的隆起破坏线函数，建立极限内压( )的表达式，将理论分析结果与有限元软件计算结果进行对比分析，并在此基础上探讨洞室群形状/布局参数对和隆起破坏线的影响规律。结果表明：理论解与数值解的误差范围处于1.57%～2.20%范围，且隆起破坏范围基本一致；与附加荷载和洞室间距成正比，与洞室半径成反比，且对附加荷载的敏感性最高，半径次之，对洞室间距的敏感性最低；分层界面处各隆起破坏线间的水平距离与盖层厚度成正比；地面处水平隆起破坏范围间的差距与盖层厚度成正比；在内衬式洞室群库址选择时，可将土体黏聚力和内摩擦力作为安全储备，并综合考虑洞室半径对和氢气容量的影响，同时根据隆起破坏范围规避地质构造缺陷区域。研究成果对于分层岩体中内衬式地下洞室群氢能存储库址选择、洞形设计具有指导意义。

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	邱凯1
	李树忱1
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	刘日成1
	刘众众2
	王宗昊2

关键词 ：地下工程, 氢能存储, 内衬式地下洞室群, 隆起破坏, Hoek-Brown强度准则, 极限分析

Abstract：The analysis of uplift failure mechanism for underground lined rock caverns is of significant importance for improving the storage capacity and safety of hydrogen. In this paper，the functions of the uplift failure lines in layered rock formations and the expressions of critical uplift pressure( ) are derived based on the Hoek-Brown strength criterion and the upper bound method of limit analysis. Subsequently，the analytical solutions are compared with numerical simulations. On this basis，the influence laws of shape and layout parameters of the caverns on the and uplift failure lines are investigated. The results show that the error range of between the theoretical and numerical solutions are within the range of 1.57%–2.20%，and the ranges of uplift failure are essentially the same. is directly proportional to the additional loads and cavern spacing，while inversely proportional to the cavern radius. Besides， exhibits the highest sensitivity to the additional loads，followed by the cavern radius，while the lowest sensitivity to the cavern spacing. The horizontal distances between the uplift failure lines at the layered interface are directly proportional to the thickness of the rock layers. Similarly，the gaps between the horizontal uplift failure ranges at the surface are also directly proportional to the thickness of the rock layers. In the selection of the storage sites of lined rock cavers，the cohesion and internal friction of soil can be considered as the safety reserve. Additionally，the influence of the cavern radius on and the capacity for hydrogen storage should also be comprehensively considered. Furthermore，sites with geological tectonic defects should be avoided based on the range of uplift failure lines. The research results hold significant guidance for the selection of hydrogen energy storage sites and the design of cavern shapes in layered rock formations within lined rock caverns.

Key words： underground engineering hydrogen energy storage lined underground rock cavern group uplift failure Hoek-Brown strength criterion limit analysis

引用本文:

邱凯1，李树忱1，2，3，刘日成1，刘众众2，王宗昊2. 内衬式地下洞室群氢能存储隆起破坏机制分析[J]. 岩石力学与工程学报, 2024, 43(2): 468-480.
QIU Kai1，LI Shuchen1，2，3，LIU Richeng1，LIU Zhongzhong2，WANG Zonghao2. Analysis of uplift failure mechanism for underground lined rock caverns in hydrogen energy storage. , 2024, 43(2): 468-480.

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http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2023.0285 或 http://rockmech.whrsm.ac.cn/CN/Y2024/V43/I2/468

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