中国石油大学学报（自然科学版）2018，Vol.42Issue(4)：135-142,8.DOI:10.3969/j.issn.1673-5005.2018.04.016
含夹层盐岩椭球储气库极限压力
Limit pressure of ellipsoid gas storage in laminated salt rocks
摘要
Abstract
The underground gas storage in salt rocks plays an irreplaceable role in peak shaving and safety ensuring for gas supply.Therefore, determining the reasonable limit pressure of gas storage is of great significance.With regard to the limit pressure for ellipsoid gas storages, the limit pressures of different ellipsoid sizes of gas storages are calculated by using the fi-nite element software ABAQUS.The limit pressures are discussed by the Mohr-Coulomb shear failure criterion, maximum pressure criterion and minimum pressure criterion.Besides, effects of the varying cohesion and tension strength of interlayer of underground salt rock gas storages on the limit pressure are studied.The results show that the limit pressure of the gas storage increases with the decrease of the ratio of the axis length of ellipsoid cavity.While the limit pressure of the same gas storage does not change with the variation of cohesion and tension strength.When different gas storages attain the maximum pressure, damage occurs at the top of the salt rock cavity, and for the minimum pressure, the damage area of the interlayer is basically unchanged.The existence of interlayer has little influence on the limit pressure of ellipsoid gas storages.关键词
椭球储气库/极限压力/有限元法/抗拉强度Key words
ellipsoid gas storage/limit pressure/finite element method/tension strength分类
建筑与水利引用本文复制引用
陈金平,贾善坡,张雪松,井文君,龚俊..含夹层盐岩椭球储气库极限压力[J].中国石油大学学报（自然科学版）,2018,42(4):135-142,8.基金项目
国家自然科学基金项目(51509261,41102182) （51509261,41102182）
湖北省自然科学基金项目(2015CFB194) （2015CFB194）
山东省优秀中青年科学家科研奖励基金项目(BS2014NJ006) （BS2014NJ006）
