Full
Outline
Take the high-sulfur ore in Gaofeng mine as the research object to address the problems of resource waste and potential safety hazards caused by oxidation and consolidation during the mining process of deep high-sulfur ore. The consolidation characteristics of the ore was analyzed through the weight gain method from the quantitatively perspective, and the anti-consolidation test of sulfur ore was carried out. The anti-consolidation measures of sulfur ore mining were put forward according to the test results. Based on the test results, corresponding anti-consolidation measures for high-sulfur ore mining were proposed. The test results indicate that the consolidation degree of the ore increases with time, and the pressure on the ore can promote its consolidation, and the maximum weight gain rate of the ore sample in 12 d is 0.460%. The composite anti-consolidation agent prepared by sodium bicarbonate (NaHCO3) and hydroxyethyl cellulose (HEC) can significantly inhibit the consolidation of ore samples. When the mass ratio of NaCO3 and NEC is 1:2 and the mass fraction of solute is 2%, the anti-consolidation coefficient is 85.5% and the weight gain rate of ore sample in 27 d is 0.215%. Combined with the test results, the anti-consolidation measures such as optimizing the blasting parameters to control the particle size of ore, continuous ore drawing in stages to shorten the exposure time and spraying anti-consolidation agent were put forward. The research results can provide theoretical basis and practical guidance for safe and efficient mining of deep high-sulfur mines.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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