Research Article

The Influence of Physical and Chemical Reactions on Water Leakage in a Multiarch Tunnel

Table 2

Differences in the ion contents between the initial solution and dissolution solution.

Hole numberStatisticsCation content/(mmol·L−1)Anion content/(mmol·L−1)Erosion CO2/(mmol·L−1)
Na+ + K+Ca2+Mg2+HCO3−Cl

Hole 1Mean value0.0610.0290.0818−0.00050.2810.01350.306
Mean square error0.12590.09350.04950.04910.23170.02550.145

Hole 2Mean value0.071−0.1310.0045−0.0117−0.1270.00750.68
Mean square error0.14250.06850.03660.05210.15640.02370.199

Hole 3Mean value0.066−0.006−0.0017−0.01920.090.00850.304
Mean square error0.13710.05670.03540.0450.14720.02320.115

Hole 4Mean value0.14−0.0460.07580.0010.2220.00750.623
Mean square error0.21630.0610.04260.05410.12980.02380.161