Research Article
Formation Mechanism of “Large-Area Sweating” Water Seepage from Deep Mine Sandstone Pores
Table 1
The petrological characteristics of deep mine sandstone.
| | Petrological characteristics | Jurassic sandstone | Shihezi sandstone | Shanxi sandstone |
| | Main rock type | Lithic arkosic sandstone | Feldspathic quartz sandstone | Feldspathic lithic sandstone | | Clay matrix (%) | Mostly 2-5, rarely 5-12 | 5-12 | 5-12 | | Cement | Siliceous, calcareous | Siliceous, calcareous | Siliceous | | Compositional maturity | Low | Relatively low | Low | | Sorting coefficient () | Well (1.15-1.37) | Medium-well (1.47-1.60) | Medium-well (1.16-1.93) | | Grain shape | Medium psephicity, subrounded-subangular | Medium psephicity, subrounded-subangular | Medium psephicity, subrounded-subangular | | Cement type | Porous | Porous, contact | Porous, contact | | Textural maturity | Secondary immature | Immature | Immature |
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