Full
Outline
For the shaft wall-tank structure in mining areas under thermal-fluid-solid three-phase coupling action, a combined method of numerical simulation and field monitoring was adopted. The “node displacement difference” of the beam-rod system structure was innovatively proposed to characterize the displacement of tank seams, and the influence of temperature and water head variations on the synergistic deformation of the structure were systematically analyzed. The results show that the increase in temperature causes the maximum vertical compressive stress of the shaft wall to increase by 24.35％, and the axial compressive stress of the tank beam to decrease by 25.63％, leading to the tank beam bending upward instead of downward. The overall structure shows a trend of thermal expansion. The reduction of water head increases the maximum vertical stress of the shaft wall by about 5 times, and increases the axial compressive stress of the tank beam by 24.45％. The extrusion deformation of the shaft wall triggers the delamination bending of the tank beam. In six working conditions, the increase in temperature and the reduction of water head lead to an increase of the vertical stress of the shaft wall by 21.1％, 20.9％, 19.6％ and 16.4％, 14.2％. The axial compressive stress of the tank beam increases as the water head decreases. The increase in temperature slightly weakens the growth amplitude of the shaft wall shear strain. The vertical displacement of the tank seam at the measuring point 3AA45 near the shaft wall is most affected by the three-phase coupling. The mathematical model shows that the influence of hydrophobic action on the vertical displacement of tank seams is 3.63 times that of temperature action. The research results can provide important references for the safety of the shaft wall-tank structure.
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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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