| 陇东黄土塬区地裂缝灾害形成机理分析 |
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| 引用本文： | 张彦林,李爱军,付东林. 陇东黄土塬区地裂缝灾害形成机理分析[J]. 中国地质灾害与防治学报, 2010, 21(1): 65-68 |
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| 作者姓名： | 张彦林 李爱军 付东林 |
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| 作者单位： | 1. 甘肃省地质调查院,甘肃兰州,730000
2. 甘肃省地质环境监测院,甘肃兰州,730050 |
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| 基金项目： | 中国地质调查局县(市)地质灾害调查与区划项目 |
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| 摘 要： | 对陇东黄土塬区地裂缝灾害的调查表明,在该区不断发生的地裂缝灾害实际上是在黄土构造节理的基础上,黄土潜蚀灾害的一种表现形式,是黄土塬区边缘一种特有的地质灾害现象,其形成除受黄土构造节理控制外,还受黄土本身的湿陷特性及塬面坡度、降水强度、地面硬化等条件制约。本文在灾害现状剖析的基础上,分析了黄土塬区地裂缝灾害的形成机理。
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| 关 键 词： | 黄土塬 地裂缝 构造节理 湿陷特性 黄土潜蚀 陇东 |
Formation mechanism of ground fissures in Longdong loess tableland |
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| ZHANG Yan-lin,LI Ai-jun,FU Dong-lin. Formation mechanism of ground fissures in Longdong loess tableland[J]. The Chinese Journal of Geological Hazard and Control, 2010, 21(1): 65-68 |
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| Authors: | ZHANG Yan-lin LI Ai-jun FU Dong-lin |
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| Affiliation: | ZHANG Yan-lin1,LI Ai-jun1,FU Dong-lin2(1.Geological Survey of Gansu Province,Lanzhou 730000,China 2.Geological Environment Monitoring Institute of Gansu Province,Lanzhou 730050,China) |
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| Abstract: | Frequent ground fissures were a form of loess erosion hazard.They were formed on the loess structural joints.It was a special phenomenon of geological disaster in the loess tableland.Its formation was restricted by collapsible features,table-land slope degree,precipitation intensity and ground sclerosis conditions besides the loess structural joints.Formation mechanism of the disasters was analyzed based on their present status in this paper. |
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| Keywords: | loess tableland ground fissure structural joint loess erosion |
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