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Experimental study of water curtain performance for gas storage in an underground cavern

Journal of Rock Mechanics and Geotechnical Engineering 2009年第1期1卷 89-96页

作者： Zhongkui Li Kezhong Wang Anmin Wang Hui Liu State Key Laboratory of Hydroscience and Engineering Tsinghua University Beij＇ing 100084 China School of Civil Engineering andArchitecture Zhejiang University of Technology Hangzhou 310014 China

An artificial water curtain system is composed of a network of underground galleries and horizontal boreholes drilled from these ***-grouting measures are introduced to keep the bedrock saturated all the *** system is deployed over an artificial or natural underground cavern used for the storage of gas（or some other fluids） to prevent the gas from escaping through leakage paths in the rock *** experimental physical modeling system has been constructed to evaluate the performance of artificial water curtain systems under various *** conditions include different spacings of caverns and cavern radii located below the natural groundwater *** principles of the experiment,devices,design of the physical model,calculation of gas leakage,and evaluation of the critical gas pressure are presented in this *** result shows that gas leakage is strongly affected by the spacing of water curtain boreholes,the critical gas pressure,and the number and proximity of storage *** hydraulic connection between boreholes is observed to vary with depth or location,which suggests that the distribution of water-conducting joint sets along the boreholes is also *** designing the drainage system for a cavern,drainage holes should be orientated to maximize the frequency at which they encounter major joint sets and permeable intervals studying in order to maintain the seal on the cavern through water *** experimental results provide a significant contribution to the theoretical controls on water curtains,and they can be used to guide the design and construction of practical storage caverns.

关键词： artificial water curtain model test storage cavern gas pressure

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