岩土工程学报2024，Vol.46Issue(1)：110-119,10.DOI:10.11779/CJGE20221165
压气储能地下储气库衬砌裂缝分布特征及演化规律研究
Distribution characteristics and evolution laws of liner cracks in underground caverns for compressed air energy storage
摘要
Abstract
The liner of underground gas storage cavern is used to transfer the internal pressure to the surrounding rock,and at the same time serves as the base of flexible sealing layer.The excessively wide cracks due to the high internal pressure may lead to generation of reflective cracks in the sealing layer,thus causing the leakage of high-pressure gas.To deeply understand the characteristics of liner cracking in high-pressure underground gas storage cavern,a routine for cracking analysis of a liner based on the FLAC3D platform is developed,and the influences of reinforcement mode and ratio,concrete cover thickness,surrounding rock type and effect of temperature-pressure cyclic loading on cracking evolution characteristics are studied.The research results show that the crack width of the liner can be effectively controlled by reasonable reinforcement of concrete liner and improvement of the surrounding rock quality.For a circular cross-section tunnel gas storage cavern,it is possible to control the maximum crack opening in the liner by differentiated reinforcement mode,so as to reasonably reduce the reinforcement quantity in the liner.The thermo-mechanical coupling effects due to the simultaneous change of compressed air pressure and temperature are helpful to reduce the crack width in the liner.关键词
压气储能/地下储气库/钢筋混凝土衬砌/衬砌开裂特征/裂缝宽度Key words
compressed air energy storage/underground gas storage cavern/reinforced concrete liner/liner cracking characteristic/crack width分类
建筑与水利引用本文复制引用
蒋中明,甘露,张登祥,肖喆臻,廖峻慧..压气储能地下储气库衬砌裂缝分布特征及演化规律研究[J].岩土工程学报,2024,46(1):110-119,10.基金项目
国家自然科学基金项目(52178381,51778070) （52178381,51778070）
