Multivariate Analysis for Hydrochemical Changes near the Mizunami Underground Research Laboratory

Todaka, Norifumi*; Ajima, Shuji*; Nakanishi, Shigetaka*; Tezuka, Shigeo*

JNC TJ7400 2005-001, 216 Pages, 2005/03

JNC-TJ7400-2005-001.pdf:35.25MB
JNC-TJ7400-2005-001(errata).pdf:0.08MB

One of the tasks in the program of the Mizunami Underground Research Laboratory is development of methodology for evaluating geochemical effects caused by construction of underground facilities. Using the M3 (Multivariate Mixing and Mass balance) analysis tool developed by SKB in Sweden, PHREEQC developed by USGS in USA, and the reactive chemical transport simulator (TOUGHREACT) developed by LBNL in USA, the analyses concerning hydrochemical changes of groundwater at the Mizunami Underground Research Laboratory was conducted to verify their modeling applicability and to construct a hydrochemical model for predicting perturbations caused by the shaft excavation in the next phase.