ASSESSMENTS OF CONTAINMENT AND STABILITY OF UNDERGROUND CRUDE OIL STORAGE CAVERNS BASED ON FLUID-SOLID COUPLING THEORY FOR DISCRETE MEDIUM
LI Shucai1，PING Yang1，WANG Zhechao1，XUE Yiguo1，LI Shuchen1，WANG Gang2，ZHAO Jiangang1
(1. Geotechnical and Structural Engineering Research Center，Shandong University，Jinan，Shandong 250061，China；
2. Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation，Shandong University of Science and Technology，Qingdao，Shandong 266510，China)
Abstract：Based on fluid-solid coupling theory for discrete medium，containment and stability properties of underground crude oil storage caverns were assessed for the first pilot crude oil storage caverns in China. Elastic modulus and Poisson?s ratio were obtained in triaxial compression tests；while shear modulus and hydraulic aperture were obtained in shear-seepage coupling tests. The back analysis for the other parameters of surrounding rock was performed according to the deformation and water table change in rock mass around the service tunnel under construction. The containment property of the crude oil storage caverns subjected to the groundwater pressure of 50 kPa in the curtaining tunnels was assessed based on the laboratory tests and back analysis. It is obtained that the groundwater table would stabilize at 60 m above the crowns of the caverns，and more than storage media pressure inside hole. The crown settlements range from 9 to 30 mm，which satisfy the standard for the stability of the caverns. The distributions of horizontal stress，vertical stress，normal stress and shear stress around the caverns #8，#9 could be divided into three zones，i.e. excavation induced loose zone，disturbance and undisturbed zones. The extent of loose zone is about 6 m. The research provides theoretical basis for the design of curtain system of large-scale underground crude oil storage caverns.
李术才1，平 洋1，王者超1，薛翊国1，李树忱1，王 刚2，赵建纲1. 基于离散介质流固耦合理论的地下石油洞库水封性和稳定性评价[J]. 岩石力学与工程学报, 2012, 31(11): 2161-2170.
LI Shucai1，PING Yang1，WANG Zhechao1，XUE Yiguo1，LI Shuchen1，WANG Gang2，ZHAO Jiangang1. ASSESSMENTS OF CONTAINMENT AND STABILITY OF UNDERGROUND CRUDE OIL STORAGE CAVERNS BASED ON FLUID-SOLID COUPLING THEORY FOR DISCRETE MEDIUM. , 2012, 31(11): 2161-2170.
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2012, Vol. 31 
