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顶板事故的原因及防治技术 | 2010-10-18 8:32:00

顶板事故的原因及防治技术 


1.顶板事故的原因
在采矿生产活动申,顶板事故是最常见的事故,引发顶板事故的原因有:
(1)采矿方法不合理和顶板管理不善。采矿方法不合理,采掘顺序、凿岩爆破、支架放顶等作业不妥当,是导致这类事故发生的重要原因。
(2)缺乏有效支护。文护方式不当、不及时支护或缺少支架、支架的初撑力与顶板压力不相适应是造成此类事故的另一重要原因。
(3)检查不周和疏忽大意。在顶板事故中,很多事故都是由于事先缺乏认真、全面的检查,疏忽大意,没有认真执行“敲帮问顶”制度等原因造成的。
(4)地质条件不好。断层、褶曲等地质构造形成破碎带,或者由于节理、层理发育,破坏了顶板的稳定性,容易发生顶板事故。
(5)地压活动。地压活动也是顶板事故的一个重要原因。
(6)其他原因。不遵守操作规程、发现问题不及时处理、工作面作业循环不正规、爆破崩倒支架等都容易引起顶板事故。
顶板事故可以采用简易方法和仪器进行检查与观测,常用的简易方法有木楔法、标记法、听音判断法、震动法等。还可以采用顶板报警仪、机械测力计、钢弦测压仪、地音仪等观测顶板及地压活动。
2.顶板事故防治技术
防治顶板事故的发生,必须严格遵守安全技术规程,从多方面采取综合预防措施。
(1)选择合理的采矿方法。选择合理的采矿方法,制定具体的安全技术操作规程,建立正常的生产和作业制度,是防治顶板事故的重要措施。
(2)搞好地质调查工作。对于采掘工作面经过区域的地质构造必须调查清楚,通过地质构造带时要采取可靠的安全技术措施。
(3)加强工作面顶板的支护与维护。为防止顶板事故的发生,永久支护与掘进工作面的距离不得超过规程规定要求,不在空顶下作业。在掘进工作面与永久支护之间,还应进行临时支护。发现弯曲、斜歪、折断和变形的支架,必须进行及时更换或维修。
(4)坚持正规循环作业。
(5)严格顶板监测制度。
(6)及时处理采空区。

  • 标签:安全 安全技术 
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    By:xcfkn(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复
    Re:在漫画中识别身边的违章 | 2016-10-10 3:48:17
    skpqu(游客)http://www.esafety.cn/blog/u/3012/archives/2012/126165.html
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    By:skpqu(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复
    Re:在漫画中识别身边的违章 | 2016-10-8 18:28:29
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    By:czegk(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复
    Re:在漫画中识别身边的违章 | 2016-10-8 15:02:18
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    By:zynqu(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复
    原创 | 2016-9-30 14:51:12
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    原创 | 2016-9-28 20:10:43
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    By:原创(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复
    原创 | 2016-9-6 20:34:20
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    By:原创(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复
    Re:顶板事故的原因及防治技术 | 2011-12-17 21:01:20
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    By:qsf999 | 个人主页 | 引用 | 返回 | 删除 | 回复
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