Global Geology 2010, 13(2) 85-89 DOI:     ISSN: 1673-9736 CN: 22-1371/P

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pumped storage
high-pressure packer permeability test
rock mass
rock cleavage

Drillhole high-pressure packer permeability test for underground powerhouse in Pushihe pumped storage hydro-plant

TIAN Zuoyin1, CHEN Li2, REN Xiangyu1 and LI Zhanjun1

1. Institute of Northeast Hydroelectric Investigation Design, Changchun 130000, China; 2. College of Construction Engineering, Jilin University, Changchun 130026, China


Usually the water head of the pumped storage hydro-plant is high, generally up to 400-500 m, therefore the rock mass under the high-pressure bifurcation pipe have to bear as high as millions Pascal water pressure, in according with the requirements of high water head pumped storage hydro-plant should be 1.2 times of the water head special high-pressure packer permeability test compared with normal to test the permeability of rock and rock cleavage pressure value. The test results on the choice of design options often play a decisive role. Based on the engineering practice, the authors studied the drillhole high-pressure packer permeability test in the pumped storage hydro-plant's underground powerhouse, by the analysis of test results, this article offers a demonstration of the deformation of rock fracture witch under building in the condition of high-pressure water head, it provides a more detailed engineering geological background.

Keywords pumped storage   high-pressure packer permeability test   rock mass   deformation   permeability   rock cleavage  
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