Full
Outline
To reveal the mechanical response law of filling body in deep stope under high ground stress and mining disturbance, the stope of the eighth middle section of Jiaojia Gold Mine was selected as the research object. The stress and deformation data of filling body in different mining stages were obtained by setting pressure cells and settlement sensor. The three-dimensional numerical model of filling body in deep stope was established, and the stress redistribution and deformation evolution law of filling body under multi-layer mining conditions were obtained. The results show that the stress of the filling body fluctuates periodically in the process of mining disturbance. The maximum stress fluctuation in the blasting stage is about 0.02 MPa, and the filling body is mainly elastic strain. During the mining process, the stress of the internal measuring points of the filling body is generally higher than that of the peripheral measuring points, and the vertical stress increases the most. The numerical simulation results show that the interlayer stress transfer characteristics are obvious, and the overall layer-by-layer transfer law from top to bottom is presented. The deformation of the filling body is relatively concentrated and large in the early stage of bearing, and tends to be stable in the later stage. The research results can provide theoretical basis and technical reference for the design of filling body and stability control of stope in deep gold mine.
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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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