High Pressure Permeability Test at Tianhuangping Pumped Storage Power Station
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Graphical Abstract
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Abstract
High pressure permeability test in a drillhole at Tianhuangping was carried out as feasibility studies for manifolds with no steel lining. The maximum testing pressure was 10MPa. Test results show that the average initial stresses in the rock are great enough to build a manifold with no steel linig. But in some places, the stresses are not great enough and the leakage through the surrounding rock mass is rather great. So proper measures should be taken to improve the situation.
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