Assessment of inter-cavern containment property for underground oil storage caverns using discrete fracture network method

摘要：

　　The inter-cavern containment property of underground storage caverns was assessed using Discrete Fracture Network(DFN)method.The fundamentals of the discrete fracture network method are described and a calculation procedure is proposed.The method was used to assess a pilot Underground oil storage facility with water curtaining system in China.The effects of water curtain pressure,inter-cavern liquid level difference,cavern spacing and joint distributions on the groundwater head distribution around the caverns were explored.It was concluded that:(1)higher water curtain pressure,smaller inter-cavern liquid level difference,and wider cavern spacing can improve the inter-cavern containment property of the facility;(2)the inclination angles of rock joints affect the prevailing seepage path in the fracture network and thus the inter-cavern containment property of the facility.It is indicated that the inter-cavern containment property of an underground oil storage project reply on a combined effect of water curtain pressure,stored liquid levels,cavern spacing,and rock joint orientations.A favorable inter-cavern containment property would not be guaranteed through increasing the water curtain pressure alone.

作者: Zhechao Wang Shucai Li Zhenjie Zhang Liping Bi Yuanyuan Wan Qing Wang

作者单位: Geotechnical and Structural Engineering Research Center, Shandong University, Jinan, Shandong, China

会议类型: 国际会议

会议名称: The 12th International Conference on Analysis of Discontinuous Deformation(第12届非连续变形分析国际大会)

会议地点: 武汉

会议语种:英文

页码: 116-125

在线出版日期: 2015-10-16（万方平台首次上网日期，不代表论文的发表时间）