Research Article
Grouting Reinforcement of Large Building Foundation over Old Gob Areas: A Case Study in Huaibei Mining Area, China
Table 5
Parameters of grouting boreholes.
| | Drilling no. | Grouting time | Grouting amount | Reason for stopping grouting | | Starting | Ending | Cement (t) | Fly ash (t) |
| | Z3 | Jan. 14 | Jan. 29 | 607.4 | 2635.2 | Emitting of slurry at ground | | Z6 | Jan. 14 | Jan. 15 | 34.0 | 175.7 | Emitting of slurry at ground | | Z7 | Jan. 15 | Feb. 20 | 1068.5 | 4216.3 | Emitting of slurry at ground | | Z5 | Jan. 18 | Jan. 26 | 385.4 | 1873.9 | Emitting of slurry at ground | | Z14 | Feb. 6 | Feb. 21 | 499.8 | 2518.1 | Reaching grouting pressure | | Z12 | Feb. 18 | Feb. 19 | 19.2 | 87.8 | Emitting of slurry at ground | | Z17 | Feb. 21 | Mar. 27 | 829.6 | 3854.4 | Emitting of slurry at ground | | Z13 | Feb. 27 | Mar. 8 | 139.0 | 778.8 | Reaching grouting pressure | | Z16 | Mar. 8 | Mar. 27 | 190.6 | 1111.0 | — | | Z4 | Mar. 10 | Mar. 27 | 396.3 | 2582.4 | Emitting of slurry at ground | | Z8 | Mar. 22 | Mar. 27 | 105.5 | 979.2 | — |
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