内衬式高压储气库群布局参数优化及稳定性分析  

OPTIMIZATION AND STABILITY ANALYSIS OF LAYOUT PARAMETERS OF LINED HIGH-PRESSURE GAS STORAGE CAVERNS

作　　者：王其宽 张彬[1] 王汉勋[1] 李玉涛 胡振法 郎保华 WANG Qikuan;ZHANG Bin;WANG Hanxun;LI Yutao;HU Zhenfa;LANG Baohua(School of Engineering and Technology,China University of Geosciences(Beijing),Beijing 100083,China;Hanshan Hengtai Non-metallic Materials Branch,Wanbei Coal-Electricity Group Co.,Ltd.,Ma anshan 238171,China)

机构地区：[1]中国地质大学(北京)工程技术学院,北京100083 [2]安徽省皖北煤电集团有限责任公司含山恒泰非金属材料分公司,马鞍山238171

出　　处：《工程地质学报》2020年第5期1123-1131,共9页Journal of Engineering Geology

基　　金：国家自然科学基金项目(资助号:41972300,41572301,40902086);中央高校基本科研业务经费项目(资助号:2-65-2019-225,2-65-2019-226)。

摘　　要：内衬式岩洞高压储气库兼具抽取率高、循环能力强,且能承受更高的内压力等优点,克服了传统压缩空气储能系统的诸多缺陷,是一种应用前景广阔的储能方式。论文以洞室埋深、内径和间距等3个最主要的储气库布局参数为影响因素,采用ABAQUS有限元软件基于正交试验设计模拟工况,以关键点的位移和塑性区面积作为评价指标,通过单因素试验研究了洞室间距、埋深及内径对围岩变形和稳定性的影响规律,提出了洞室群优化布局建议。研究表明:洞室埋深是影响储气库围岩变形和塑性区面积的最显著因素,其次为洞距和洞径;随着埋深的增大洞室围岩塑性区的发育区域得到有效的抑制,且塑性区主要分布于洞室顶部;增大洞距可有效削弱高内压对围岩的启裂效应;衬砌的最大拉应力主要分布在结构的顶部和底部,增大埋深或减小高径比都有助于提高衬砌的稳定性;综合分析表明储气库群的最优布局方案为埋深400 m、内径42 m、间距60 m。研究成果为内衬式高压储气库群的优化布局和稳定性评价提供了参考依据。The lined high-pressure gas storage cavern has the advantages of high extraction rate and strong circulation capacity,and can withstand higher internal pressure.It overcomes many shortcomings of traditional compressed air energy storage systems and has a wide application.This paper takes the three most important layout parameters including cavern depth,inner diameter and space as influencing factors and uses ABAQUS finite element software to design simulation conditions based on orthogonal test and single-factor experiment.It calculates the displacements of key points and the areas of plastic zones.Suggestions for the optimal layout of caverns are put forward.The results show that the buried depth of the cavern is the most significant factor affecting the deformation of the surrounding rock and the area of the plastic zone,followed by the space and diameter.As the increase of the buried depth,the development area of the plastic zone is effectively restrained,and the plastic zone is mainly developed on the top of the cavern.The restraint effect of high internal pressure on the surrounding rock can be weakened by increasing the space.The maximum tensile stress of the lining is mainly distributed at the top and bottom of the cavern.The stability of the lining is improved when the buried depth increases or the height-to-diameter ratio reduces.The optimal layout of the caverns is that the depth,the diameter and the space are 400 m,42 m and 60 m,respectively.The results provide a reference for the optimization of the layout and stability analysis of the lined high-pressure gas storage caverns.

关 键 词：内衬式岩洞 洞群优化 数值模拟 正交试验 

分 类 号：TU457[建筑科学—岩土工程]