| 白音华一号露天煤矿不良地质现象调查 |
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| 引用本文： | 聂国印,刘大野.白音华一号露天煤矿不良地质现象调查[J].中国煤炭地质,2009(8):48-50. |
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| 作者姓名： | 聂国印 刘大野 |
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| 作者单位： | 内蒙古自治区煤田地质局104勘探队,内蒙古赤峰024005 |
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| 摘 要： | 基于矿区地层结构及地质构造的研究，认为该矿工作帮（BH1）崩塌引发因素是第四系松散层白稳能力差，当采掘台阶前缘临空面较大时，该台阶后缘形成的拉张裂缝处的土体突然脱离母体翻滚而下形成崩塌体；非工作帮（BH2）滑坡引发因素是滑坡体底板为2煤组底板泥岩层，该泥岩中赋存一层厚约2m左右的富含高岭土和其它粘土矿物成份的软弱结构层（面），由于上覆的剥离排弃物在边坡上超载堆积，在众多出水点渗流渗水的作用下，加之温度较低，岩体冻胀，使软弱结构层抗剪强度降低，从而沿软弱结构层（面）倾向发生了滑坡。
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| 关 键 词： | 崩塌 滑坡 机理 白音华一号露天煤矿 |
Unfavorable Geological Phenomena Investigation in Baiyinhua No.1 Surface Coalmine |
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| Nie Guoyin,Liu Daye.Unfavorable Geological Phenomena Investigation in Baiyinhua No.1 Surface Coalmine[J].Coal Geology of China,2009(8):48-50. |
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| Authors: | Nie Guoyin Liu Daye |
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| Institution: | (No. 104 Exploration Team, Inner Mongolia Bureau of Coal Geological Exploration, Chifeng, Inner Mongolia 024005) |
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| Abstract: | Based on mining area stratigraphic configuration and geological structural researches, considered that the inducing factor of collapse in working wall （BH1） of the surface coalmine is poor self-stabilization of Quaternary loose beds, when free face in front of cutting bench toe is large, extensional fissures formed in posterior edge of the bench caused Quaternary soil mass breaking away from matrix suddenly and tumbled down as collapsed mass. While the inducing factor of landslide in non-working wall （BH2） is the No.2 coal group floor mudstone, the mudstone contains an about 2 meters thick weak structural bed （plane） rich in kaolin and other clay minerals, owing to over-weighted overburden upon the slope, under the action of vadose water from many water exits, especially when low temperature causes rock mass frost heaving, lowering down the shear strength of the weak structural bed （plane）, then landslide happened along the weak structural bed （plane）. |
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| Keywords: | collapse landslide mechanism Baiyinhua No 1 surface coahnine |
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