| 青海麦秀山滑坡形成机理分析 |
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| 引用本文： | 戚宗轲.青海麦秀山滑坡形成机理分析[J].中国地质灾害与防治学报,2007,18(3):6-10. |
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| 作者姓名： | 戚宗轲 |
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| 作者单位： | 中铁西北科学研究院有限公司,甘肃,兰州,730000 |
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| 摘 要： | 文章从地形地貌、地层岩性、地质构造、水文气象条件等方面,对青海麦秀山滑坡的产生机理进行分析,重点阐明地质构造对地质灾害的控制作用。3个滑坡形成的基本机理:滑坡均在断层带,所处地层岩体均因受构造作用,节理裂隙发育,岩体多呈破碎状,风化强烈,表层泥质砂砾岩已全风化成土状,加之岩体破碎,裂隙发育,地表水、地下水补给充分,加速了岩石的风化、泥化,长期在丰富饱和的地下水的浸泡下形成可塑、软塑泥状物,其滑动带主要依附于硬塑-软塑的过渡层,滑床为较硬的砂砾岩。由此建议,对修建山区公路时所遇到的舒缓坡地,应慎重判识是否存在滑坡灾害,并采用合理的绕避或工程措施,将地质灾害在公路建设中产生的损失及不良影响降到最低点。
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| 关 键 词： | 滑坡 地质构造 断层 舒缓坡地 公路选线. |
| 文章编号： | 1003-8035（2007）03-0006-05 |
| 收稿时间： | 2007-03-23 |
| 修稿时间： | 2007-03-232007-05-28 |
Mechanism analysis of Maixiushan Landslide in Qinghai Province |
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| QI Zong-ke.Mechanism analysis of Maixiushan Landslide in Qinghai Province[J].The Chinese Journal of Geological Hazard and Control,2007,18(3):6-10. |
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| Authors: | QI Zong-ke |
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| Institution: | Northwest Research Institute Co., Ltd. of C.R.E.C., Lanzhou 730000, China |
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| Abstract: | The paper analyzes the formation mechanism of Maixiushan landslide based on topographical features,rock character,geologic structure,hydrologic and weather condition.We discussed the influence of geologic structure to the geohazard.The formation mechanism of these three landslides is: they are all in faulted zone; subjected to tectonism,rock mass is ubiquitous-jointed and broken,strong weathered,the upper layers are in soil style;surface water and ground water are abundant,which result in the acceleration of weathering;the slide surface depends on transition layer of rigid plastic layer and soft plastic layer.The bed of slide is the harder sandstone and mudstone.It's suggest that in the construction of highway in gentle slope areas,it should be careful to judge the existing of landslide,thus reduce the damage and negative effect of geologic disaster to the lower-most point. |
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| Keywords: | landslide geologic structure fault gentle slope road selecting |
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