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To clarify the accident causes and their association rules of strike accidents in hydropower project construction，specific accident prevention strategies were proposed to curb accidents at source. Based the selected object strike accidents during hydropower construction process，14 accident causal parameters were summarized using text mining from four perspectives including worker，machine，environment and management. Moreover，an importance analysis model was proposed by coupling association rules and the DEMATEL approach to analyze the interrelated relationship between causes and determine major accident causes. The results showed that the accident causes of object strikes in hydropower projects were closely related to each other，among which inadequate safety supervision and inspection，illegal operations，insufficient safety protection，and weak safety awareness directly affected the accident's occurrence. Furthermore，the deeper causing factors of accidents were incomplete on-site cleaning，insufficient disclosure of safety technology，and inadequate safety education. Weak safety awareness ranked first in terms of centrality and had the greatest influence on the accident causation system，thereby the above causative factors should be emphasized in project construction.
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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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