Research Article
Damage Characteristics and Mechanism of a Strong Water Inrush Disaster at the Wangjialing Coal Mine, Shanxi Province, China
Table 1
Results of the groundwater quality analysis unit: mg⋅l−1/X%.
| | Source | The inrush water | The Ordovician water | The P+C sandstone water in the roof of the No.2 coal seam | | Sampling site | The water pump outlet | No.1 supply well | S5 hydrological hole |
| | Sampling time | 2010.3.28 | 2010.3.31 | 2010.4.2 | 2009.3.11 | 2008.8.6 | | Total hardness | 101.17 | 91.88 | 73.8 | 1454.2 | 12.46 | | Ca2+ | 23.45/4.88 | 26.22/3.54 | 20.58/4.48 | 324.97/48.76 | 3.33/1.06 | | Mg2+ | 10.35/3.55 | 6.41/2.23 | 5.44/1.95 | 156.06/38.60 | 1.01/0.53 | | Na+ | 495.00/0.70 | 495.93/91.36 | 489.18/92.80 | 94.67/12.38 | 355.40/92.28 | | K+ | 6.60/89.76 | | Fe3+ | 1.60/0.36 | 0.19/0.04 | 0.23/0.04 | 1.52/0.24 | 0.34/0.10 | | Total cation | 540.52/100 | 532.20/100 | 518.31/100 | 577.30/100 | 360.20/100 | | Cl− | 69.51/8.00 | 60.98/7.28 | 50.33/6.19 | 515.92/43.75 | 52.86/9.48 | | SO42− | 204.42/17.33 | 205.39/18.11 | 195.92/17.78 | 537.55/33.65 | 159.70/21.14 | | HCO3− | 1110.01/74.10 | 1072.74/74.46 | 1015.83/72.61 | 456.29/22.48 | 580.09/60.44 | | F− | 2.64/0.57 | 2.96/0.68 | 3.40/0.78 | — | | | Total anion | 1386.66/100 | 1340.99/100 | 1285.89/100 | 1512.17/100 | 835.36/100 | | pH value | 7.62 | 7.91 | 8.35 | 7.44 | 8.3 | | Salinity | — | 1310 | 1350 | 2089.47 | 1195.56 | | Hydrochemical type | HCO3-Na | HCO3-Na | HCO3-Na | Cl·SO4-Ca·Mg | HCO3-Na |
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