Purchase and Installation of Multiple Piezometric Logger Systems in Shallow Boreholes in the Mizunami Underground Research Laboratory Project

not registered; Sawaguchi, Hiroshi*; Horita, Masakuni*

This contract is involved in installation of the multiple piezometric logger systems(MP systems) in order to make long-term measurement of groundwater pressure and graoundwater chemistry in boreholes named MSB-1,MSB-2,MSB-3 and MSB-4 before, during and after excavating shafts of the Mizunami Underground Research Laboratory. After the installation of the MP systems, the function of the systems was tested by measuring the pressure along the boreholes, measuring the water levels for performance check of the pumping ports and measuring in-situ groundwater chemistry with a prototype chemical probe.