Research Article
Quantitative Identification of Grouting Effect of Working Face Floor with Multifactor Set
Table 3
The weight of the grouting evaluation on the 15092 coal workface of Guhanshan mine.
| | Evaluation factor of first level | Weight | Evaluation factor of second level | Weight | Distinction | Good | Average | Poor |
| | Dynamic hydrological characteristics of grouting hole | 0.38 | Water absorption | 0.28 | 3 | 4 | 2 | 1 | | Water inflow | 0.27 | 5 | 3 | 1 | 1 | | Water pressure | 0.30 | 4 | 4 | 1 | 1 | | Water temperature | 0.15 | 3 | 3 | 3 | 1 | | Grouting characteristics | 0.31 | Curve of -- | 0.23 | 3 | 4 | 2 | 1 | | Dynamic relationship of water pressure, quantity of water, and grout amount | 0.16 | 4 | 3 | 2 | 1 | | Grouting characteristics of fault | 0.19 | 3 | 3 | 3 | 1 | | Pressure after grouting | 0.40 | 4 | 3 | 2 | 1 | | Inspection hole | 0.18 | Porosity | 0.16 | 4 | 5 | 0 | 1 | | Rock mass density | 0.15 | 2 | 4 | 2 | 2 | | Compressive strength | 0.31 | 3 | 3 | 1 | 3 | | Osmotic coefficient | 0.38 | 4 | 3 | 1 | 2 | | Geophysical prospecting | 0.13 | TEM | 0.43 | 3 | 3 | 1 | 2 | | DC | 0.57 | 4 | 2 | 2 | 2 |
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