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他并没有像大多数牛仔那样把冒顶摁下去。And he did not push the top of the hat down like most cowboys do.
矿山冒顶是矿山生产过程中严重灾害之一。Roof fall in mines is one of the severe disasters in mining operation.
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冒顶塌方在水工隧洞施工过程中难以完全避免。Roof fall can not be completely avoided in construction of hydraulic tunnels.
分析了冒顶事故的发生原因和预兆，提出了预防措施。The reason and forecast of roof falling are analyzed. And the preventive measures are provided.
矿山井下开采过程中，最常发生的事故就是冒顶事故。The roof falling accident is the most commonly occurring accidents in coal mines mining process.
最后提出了防治描杆支护煤巷冒顶的技术途径。Finally technological methods were brought out to prevent roof falling on bolt support mining roadway.
由于地质环境复杂，常出现冒顶、片帮和坍塌现象。Because of the complexity of the geologic environment, rooffalling slicing and collapse occur frequently.
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因此，预防冒顶事故的发生，对该地区煤矿安全生产具有十分重大的意义。Therefone, the prevention of these occurrences has a significance for the safty production at coal mines in this area.
本发明涉及煤矿井下开采工艺，进一步讲是回采工作面防止片帮冒顶的一种方法。The coal wall or roof of working face is perforated, and a hydraulic expansible anchor stock is inserted into the hole.
金川二矿区不良岩层采场巷道片帮冒顶事故树分析。Fault tree analysis for collapse of roadways with fractured surrounding rock and high tectonic stress in jinchuan mine no.
对铜绿山矿采场冒顶的声发射特征和预报不准的原因进行了分析。The sound emission characteristics and the causes for incorrect prediction of the stope roof fall at Tonglushan Mine were analysed.
综采面过断层时，顶板破碎，煤壁松软，压力显现，管理不当易造成冒顶、片邦。The fully mechanized coal face, crossing the fault zones, would cause the roof soft or roof collapse if the ground control were not correct.
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冒顶是煤矿生产中常见的事故，因此认识冒顶的原因及预兆，控制好冒顶是煤矿安全生产的重要保证。Roof fall is the most ordinary accident in coal mine. So analysing the causes, signs and controling of roof fall is the key of mining in coal mine.
针对义马矿区西部四矿易发冒顶事故的几种类型，进行了原因分析，提出了有效的预防措施，可以达到避免重大恶性顶板事故发生的目的。The authors have discussed on the causal analysis of various roadway roof accidents and posed some prevention measures to reduce roadway roof accidents.
对煤矿冒顶事故发生的原因进行了详细的分析，提出了防止煤矿冒顶事故的具体防范措施，结果表明该措施是合理的。This paper analyzes the roof leakage accidents at the end of fully-mechanized face in Wangcun Coal Mine, and advances some measures for preventing roof leakage.
百花滩2号隧道滑坡为古滑坡，在隧道开挖过程中，由于出现了冒顶和塌方，对2号隧道安全构成了威胁。Baihuatan's No. 2 tunnel landslide is an old-landslide, it has collapsed and roof fallen during excavation of tunnel, which threatens the safety of No. 2 tunnel.
本发明工艺简单，操作方便，基本不增加设备，节省人员、时间，成本低，而效果却十分显著，是采煤面防片帮冒顶行之有效的方法。Thus, the purpose to prevent side and roof fall at working face is attained. The invented mining technology features easy operation, low cost and obvious effect.
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通过对工作面端面冒顶原因及支护系统的分析得出，加大液压支架的流量可以加快移架速度，降低冒顶事故率，提高生产效率。Analysing the roof-fall cause of end face and support system, an effective way to reduce roof fall sensitivity and improving production efficiency are pointed out.
冒顶片帮事故是地下矿山危害最为严重的事故，矿山地压管理是地下开采矿山安全管理的重要任务。Roof fall accident is one kind of dangerous accidents happened at underground mines and underground pressure management is the main task of mining safety management.
本文提出顶板动态监报应包括回采工作面局部冒顶的监报及顶板来压的预报这两个方面的观点。In this paper a new viewpoint has been presented that the roof behavior prediction should include both the local roof fall prediction and the roof weighting prediction.