FLOW RATE CALCULATION METHOD AND FLOW RATE CALCULATION DEVICE OF LEAK OF GROUND WATER INCLUDING SEA WATER, AND CONTROL DEVICE OF AMOUNT OF PUMPED WATER LEAK

摘要

PROBLEM TO BE SOLVED: To determine simply the flow rate of a water leak including sea water without being influenced by alkaline earth metal ions such as a calcium ion which is a component derived from the sea water.;SOLUTION: The flow rate of the water leak including sea water has a linear relation with its electric conductivity. The relational expression is determined beforehand, and the electric conductivity of the water leak measured by using an electrode for electric conductivity measurement which is hardly influenced by the component derived from the sea water such as calcium ions for a long period is substituted into the determined relational expression, to thereby calculate the flow rate of the water leak.;COPYRIGHT: (C)2004,JPO