废弃盐穴地下储气库稳定性研究  

STABILITY ANALYSIS OF ABANDONED SALT CAVERNS USED FOR UNDERGROUND GAS STORAGE

作　　者：陈卫忠[1] 伍国军[1] 戴永浩[1] 杨春和[1] 

机构地区：[1]中国科学院武汉岩土力学研究所,湖北武汉430071

出　　处：《岩石力学与工程学报》2006年第4期848-854,共7页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金重点项目(50434050);国家自然科学基金资助项目(50379052);中国科学院重大方向性项目(150501)

摘　　要：国际上公认盐岩体是地下能源(石油、天然气)储存最理想的介质,作为储气库的盐岩溶腔,一般都是根据设计要求通过水溶开采形成。目前,国内外鲜见利用地下废弃盐岩溶腔作为天然气储气库的先例。通过对ABAQUS有限元的二次开发,对某废弃盐岩溶腔的储气库围岩和岩柱的蠕变变形规律及腔顶蠕变损伤区的范围进行数值模拟,并对废弃溶腔作为储气库时的工作压力和储库套管鞋高度设计作了有益的探讨,这对指导工程实践具有一定的指导意义。Salt rock is considered as a perfect medium for underground oil and gas storage. Normally, underground salt caverns for gas storage are formed by aqueous fusion method according to specific design. Presently, there is no underground natural gas storages operation in abandoned salt caverns in the world. Based on numerical results with finite element method（FEM） code ABAQUS, the creep behaviors of caverns and rock pillars and the range of creep damage of the cavern roof are approached. Furthermore, the working pressure for gas storage in abandoned salt caverns and location of casing shoes are discussed. The conclusions drawn from the study can provide useful reference to the practical engineering.

关 键 词：岩石力学 盐岩 废弃盐穴 储气库 蠕变 套管鞋 

分 类 号：TU452[建筑科学—岩土工程]