Full
Outline
In order to meet the requirements of lightweight and explosion-proof safety of coal mine equipment, a type Ⅰ non-metallic lightweight explosion-proof enclosure with a volume of 19.5 L was prepared by glass fiber/epoxy resin composite (GF/ER). The comprehensive performance of GF/ER explosion-proof enclosure was analyzed by material performance tests, finite element simulation and multiple explosion-proof safety tests. The results show that the GF/ER explosion-proof enclosure meets the requirements of high mechanical strength, high flame retardancy (V-0 grade) and antistatic property of underground coal mine equipment. The change rates of tensile properties, bending properties and impact strength of GF/ER explosion-proof enclosure are less than 10%, indicating that it has excellent durability and environmental adaptability. In the reference pressure test, the maximum explosion pressure of the GF/ER explosion-proof enclosure is 0.496 MPa, the ultimate bearing capacity is 3.1 MPa, far exceeding the standard requirement of 1.5 MPa. Under the working load, the gap deformation of the GF/ER explosion-proof enclosure is less than 0.15 mm, and the structure is stable and reliable. Compared with the same size metal explosion-proof box, the GF/ER explosion-proof enclosure achieves more than 50% weight reduction effect, significantly reduces the burden of downhole operation, and improves the endurance of mobile equipment. The research results can provide a feasible technical path and theoretical basis for the lightweight of mining equipment.
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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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