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山东大学学报(工学版) ›› 2016, Vol. 46 ›› Issue (2): 94-100.doi: 10.6040/j.issn.1672-3961.0.2015.278

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基于离散裂隙网络法的地下石油洞库洞室间水封性评价

王者超,张振杰,李术才,毕丽平,方水鑫,钟克诚   

  1. 山东大学岩土与结构工程研究中心, 山东 济南 250061
  • 收稿日期:2015-08-19 出版日期:2016-04-20 发布日期:2015-08-19
  • 作者简介:王者超(1980— ),男,山东高唐人,副教授,博士,硕导,主要研究方向为裂隙岩体渗流特性与模拟.E-mail:wanz@sdu.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(51309145,51579141,5151101078)

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

WANG Zhechao, ZHANG Zhenjie, LI Shucai, BI Liping, FANG Shuixin, ZHONG Kecheng   

  1. Geotechnical and Structural Engineering Research Center, Shandong University, Jinan 250061, Shandong, China
  • Received:2015-08-19 Online:2016-04-20 Published:2015-08-19

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摘要： 为研究地下水封石油洞库洞室间水封性,依托黄岛地下水封石油洞库工程,采用离散裂隙网络法进行了7个不同工况的分析,分别获得了在不同水幕压力、洞室间液面差、洞室间距和裂隙倾角条件下的地下水头分布和流体渗流情况。研究结果表明:水幕压力增大、洞室间液面差减小与洞室间距增大均会改善洞库水封性;裂隙网络中裂隙倾角的变化会影响围岩的渗透张量,从而改变裂隙网络中地下水的渗流路径,继而影响地下水封石油洞库洞室间水封性;仅靠增加水幕系统压力并不能保证洞室间水封性,地下水封石油洞库相邻洞室水封设计应综合考虑储油情况、洞室间距、裂隙倾角等因素。

关键词: 离散裂隙网络, 裂隙倾角, 优势渗流路径, 洞室间水封性, 地下水封石油洞库, 裂隙渗流

Abstract: In order to study the inter-cavern containment property for underground oil storage caverns, combining with Huangdao underground oil storage caverns project, seven different cases were investigated by the discrete fracture network method. The water curtain pressure, inter-cavern oil level difference, cavern spacing and joint inclination angles could influent groundwater head distribution and seepage in fracture network. It was concluded that a higher water curtain pressure, smaller inter-cavern oil level difference or wider cavern spacing could improve the inter-cavern containment property of the facility. The inclination angles of rock joints affected the prevailing flow path in the fracture network and thus the inter-cavern containment property of the facility. It was indicated that a favorable inter-cavern containment property would not be guaranteed by increasing the water curtain pressure alone. And the inter-cavern containment property of an underground oil storage project depended on a combined effect of water curtain pressure, stored oil levels, cavern spacing and joint inclination angle.

Key words: inter-cavern containment property, discrete fracture network, fluid flow through joints, underground storage caverns, joints inclination angle, prevailing flow path

中图分类号: 

  • U459.3
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[1] 梁建毅1,李术才2,薛翊国2,王者超2,周毅2,平洋2. 地下储油库岩体水文地质分类及工程应用研究[J]. 山东大学学报(工学版), 2012, 42(6): 86-92.
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