地下储气库热力耦合数值分析动态边界条件研究

doi:10.16285/j.rsm.2017.1873

岩土力学 ›› 2019, Vol. 40 ›› Issue (3): 1149-1157.doi: 10.16285/j.rsm.2017.1873

地下储气库热力耦合数值分析动态边界条件研究

蒋中明^{1, 2}，刘澧源¹，赵海斌³，唐栋^{1, 2}，胡炜^{1, 2}，梅松华³，李鹏³

1. 长沙理工大学水利工程学院，湖南长沙 410114；2. 长沙理工大学水沙科学与水灾害防治湖南省重点实验室，湖南长沙 410114； 3. 中国电建中南勘测设计研究院有限公司，湖南长沙 410014

收稿日期:2017-09-11 出版日期:2019-03-11 发布日期:2019-04-08
作者简介:蒋中明，男，1969年生，博士后，教授。主要从事岩土工程稳定性理论与数值分析方面的科研工作
基金资助:
国家自然科学基金资助项目（No.51778070）；中国电建集团科技计划项目（No.GW-KJ-2012-26-02）

Study of dynamic boundary conditions for thermo-mechanical coupling analysis of underground gas storage cavern

JIANG Zhong-ming^{1, 2}, LIU Li-yuan¹, ZHAO Hai-bin³, TANG Dong^{1, 2}, HU Wei^{1, 2}, MEI Song-hua³, LI Peng³

(1. School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, China; 2. Key Laboratory of Water-Sediment Sciences and Water Disaster prevention of Hunan Province, Changsha University of Science & Technology, Changsha, Hunan 410114, China; 3. PowerChina Zhongnan Engineering Corporation Limited, Changsha, Hunan 410014, China

Received:2017-09-11 Online:2019-03-11 Published:2019-04-08
Supported by:
This work was supported by the National Natural Science Foundation of China (51778070) and the Project of PowerChina (GW-KJ-2012-26-02).

摘要/Abstract

摘要： 为获取地下储气库围岩热力耦合效应数值分析的边界条件，基于压缩空气质量和能量守恒方程，提出了利用FLAC3D软件求解压缩空气热力学过程及储气库围岩热力耦合数值分析边界条件的确定方法，通过算例验证了压缩空气热力学过程计算方法的正确性。采用数值分析方法研究了充放气条件下的储气库洞壁边界条件的变化特点，分析了围岩初始温度、对流换热系数以及热传导系数对边界条件变化过程的影响。研究表明：地下储气库力学及传热分析边界在运行过程中具有十分显著的动态变化特点，并与压缩空气的状态、洞壁表面热交换特性及围岩热传导特性密切相关。

关键词: 压气储能, 地下储气库, 热力耦合分析, 边界条件

Abstract: To obtain the boundary conditions for coupling thermo-mechanical simulation of underground caverns for compressed gas storage, based on the mass and energy conservation equations of compressed air, a calculation method for the solution of thermodynamic process analysis of compressed air and determination of boundary conditions of coupling thermo-mechanical simulation was proposed in software FLAC3D. The calculation method for thermodynamic process analysis of compressed gas was also validated by an example cited in the paper. The variation characteristics of boundary conditions acting on the cavern wall under the situation of charging and discharging were explored with numerical simulation method. The influences of the initial temperature, the convective heat transfer coefficient and the thermal conductivity of the surrounding rock on the boundary conditions of the cavern wall were also analyzed. The research results show that the boundary of mechanics and heat transfer analysis of underground gas storage cavern has a remarkable dynamic change during operation, which is closely related to the state of compressed air, the heat exchange characteristics of cavern wall surface and the heat conduction characteristics of surrounding rock.

Key words: compressed air energy storage, underground rock cavern, coupling thermo-mechanical analysis, boundary conditions

中图分类号:

O241

蒋中明, 刘澧源, 赵海斌, 唐栋, 胡炜, 梅松华, 李鹏, . 地下储气库热力耦合数值分析动态边界条件研究[J]. 岩土力学, 2019, 40(3): 1149-1157.

JIANG Zhong-ming, LIU Li-yuan, ZHAO Hai-bin, TANG Dong, HU Wei, MEI Song-hua, LI Peng, . Study of dynamic boundary conditions for thermo-mechanical coupling analysis of underground gas storage cavern[J]. Rock and Soil Mechanics, 2019, 40(3): 1149-1157.

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地下储气库热力耦合数值分析动态边界条件研究

Study of dynamic boundary conditions for thermo-mechanical coupling analysis of underground gas storage cavern

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