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To address the issue of spontaneous coal combustion caused by air leakage from fissures, grouting is commonly employed to seal fissures. PSES is a new type of air-leakage plugging material, whose durability and reliability of sealing performance depend directly on its intrinsic failure process. Uniaxial compression experiments, in conjunction with a single-hole model, the semi-empirical M-T model, and the CDP model, were employed to investigate the mechanical behavior of PSES across micro-, meso-, and macro-scales. The results reveal that at the microscale, the inner wall of the vesicle constitutes a primary weak point within the PSES structure, and the critical external pressure signifies the onset of localized yielding; at the mesoscale, the semi-empirical M-T model accurately predicts the equivalent effective modulus and confirms its capability to characterize the relationship between porosity and stiffness; at the macroscale, the porosity-corrected CDP model accurately fits the stress-strain curve, with the Mean Absolute Percentage Error (MAPE) ranging from 0.23% to 2.69%. Furthermore, the corrected damage factor closely corresponds with the material's actual condition, effectively characterizing its damage evolution characteristics. This, in turn, provides a reliable basis for evaluating the long-term service performance of the air-leakage plugging material.
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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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