虽然煤矿顶板事故的发生数量、死亡人数均出现了大幅下降，但是总体占比仍然

虽然煤矿顶板事故的发生数量、死亡人数均出现了大幅下降，但是总体占比仍然偏高，顶板事故仍然是煤矿的主要安全事故。工作面内的顶板事故主要由液压支架对顶板支护失效引起，主要表现为顶板发生漏冒、煤壁片帮、液压支架发生压架等引发人员伤亡。液压支架的支护参数、支护状态及对围岩断裂失稳的适应性是影响工作面安全生产的主要因素。

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结果 (英语) 1: [复制]

复制成功！

Although the number of coal mine roof accidents and the number of deaths have dropped significantly, the overall proportion is still high, and roof accidents are still the main safety accidents in coal mines. The roof accident in the working face is mainly caused by the failure of the hydraulic support to the roof support, which is mainly manifested as the leakage of the roof, the coal siding, and the compression of the hydraulic support, which cause casualties. The supporting parameters, supporting state and adaptability to the fracture and instability of surrounding rock of the hydraulic support are the main factors that affect the safety of the working face.

正在翻译中..

结果 (英语) 2:[复制]

复制成功！

Although the number of coal mine roof accidents and the number of deaths have dropped significantly, but the overall proportion is still high, roofing accidents are still the main safety accidents in coal mines. The top plate accident in the work surface is mainly caused by the failure of the hydraulic support to the top plate support, mainly manifested in the leakage of the roof plate, coal wall help, hydraulic support pressure frame and other casualties. The support parameters of hydraulic support, the state of support and the adaptability to the instability of surrounding rock fracture are the main factors affecting the safe production of the work surface.

正在翻译中..

结果 (英语) 3:[复制]

复制成功！

Although the number of coal mine roof accidents, the number of deaths have decreased significantly, but the overall proportion is still high, roof accidents are still the main safety accidents in coal mines. The roof accidents in the working face are mainly caused by the failure of the hydraulic support to the roof, which is mainly manifested in the roof leakage, coal wall spalling, hydraulic support frame pressing and so on. The support parameters, support state and adaptability to surrounding rock fracture and instability of hydraulic support are the main factors affecting the safety production of working face.<br>

正在翻译中..

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