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| HYDRAULIC CONDUCTIVITY ESTIMATION OF ROCK MASS IN WATER SEALED UNDERGROUND STORAGE CAVERNS |
| SONG Kun1，2，YAN Echuan2，CHEN Gang3 |
(1. Collaborative Innovation Center for Geo-hazards and Eco-environment in Three Gorges Area，China Three Gorges University，Yichang，Hubei 443002，China；2. Engineering Research Center of Rock-soil Drilling and Excavation and Protection，
Ministry of Education，China University of Geosciences，Wuhan，Hubei 430074，China；3. School of Environmental
Studies，China University of Geosciences，Wuhan，Hubei 430074，China) |
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Abstract After the suitability of some previous model for estimating hydraulic conductivity of rock mass，a new model was proposed considering the hydraulic characteristic of water sealed underground storage caverns. Four geological parameters including rock quality designation(RQD)，rock mass integrity designation(RID)，aperture designation(AD)，and lithology permeability designation(LPD) were adopted for establishing the estimated RMP model according to the double packers test data of Yantai LPG underground storage caverns. Then the hydraulic conductivity of 277 sections of rock mass of 14 boreholes in the area of Qingdao water sealed underground storage caverns were estimated by the RMP model. The results indicate that the rock mass in the study area has much randomness of spatial distribution；and 57.04% of the conductivity are between 10－4 m/d and10－3 m/d. The study result has some theoretical significance and engineering value for water curtain system design and evaluating water sealed effectiveness.
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Received: 10 May 2013
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2014, Vol. 33 
