中南大学学报（自然科学版）Issue(1)：254-261,8.DOI:10.11817/j.issn.1672-7207.2016.01.035
考虑渗流-应力耦合作用的层状盐岩界面裂缝扩展模型研究
Analytic model for interface crack propagation of salt rock with interlayer under coupled mechanical-hydrological environment
摘要
Abstract
According to the reality of bedded rock salt and clay interlayer for oil or gas storage in China, the cohesive element built in bedded salt rock was used to simulate the initiation, propagation and fluid seepage resulted from hydraulic loading by the cohesive zone model. The damage evolution equation, crack propagation criterion and fluid flow equation of interlayer were established. Based on the fluid-solid coupling theory of rock, the coupled interface crack propagation model of salt rock with interlayer was put forward and a typical example of application was presented to verify the validity of the model. Then, the crack propagation process of salt cavern was studied and the influence law of pore pressure, injection pressure and crack propagation was discussed in different conditions. The results show that the permeability of rock and leakage coefficient of crack has significant effects on the condition of crack propagation. The condition of crack aggravates with low permeability of rock and reduces with high leakage coefficient.关键词
层状盐岩/储气库/裂缝扩展/渗漏/有限元Key words
bedded rock salt/storage cavern/crack propagation/seepage/finite element分类
能源科技引用本文复制引用
贾善坡,杨建平,谭贤君,王越之..考虑渗流-应力耦合作用的层状盐岩界面裂缝扩展模型研究[J].中南大学学报（自然科学版）,2016,(1):254-261,8.基金项目
湖北省自然科学基金资助项目(2015CFB194)；中国博士后科学基金资助项目(2014M551055)；岩土力学与工程国家重点实验室开放基金资助项目(Z013007)(Project(2015CFB194) supported by the Natural Science Foundation of Hubei Province （2015CFB194）
Project(2014M551055) supported by China Postdoctoral Science Fund （2014M551055）
Project(Z013007) supported by the Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering) （Z013007）
