Study on Stability of Tableland Slopes and Causes for Landslides on Southern-Bank of Lower Reaches of Jinghe River

SANG Guang-shu; FENG Li-hua; SHANG Li-hua

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Study on Stability of Tableland Slopes and Causes for Landslides on Southern-Bank of Lower Reaches of Jinghe River

更新时间：2024-11-07

- Study on Stability of Tableland Slopes and Causes for Landslides on Southern-Bank of Lower Reaches of Jinghe River
- Vol. 21, Issue 5, Pages: 187-191(2007)
- 作者机构：
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  CLC： P642.22
- Published：2007
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SANG Guang-shu, FENG Li-hua, SHANG Li-hua. Study on Stability of Tableland Slopes and Causes for Landslides on Southern-Bank of Lower Reaches of Jinghe River[J]. 2007, 21(5): 187-191.
DOI：

SANG Guang-shu, FENG Li-hua, SHANG Li-hua. Study on Stability of Tableland Slopes and Causes for Landslides on Southern-Bank of Lower Reaches of Jinghe River[J]. 2007, 21(5): 187-191. DOI：

摘要

泾河下游南岸台塬边坡的滑坡灾害严重，本文中分析了滑坡的特征，通过计算边坡稳定性系数对台塬边坡进行了分类，对具有突发性和短期可变性的滑坡触发因素进行了分析，提出了滑坡治理的方法。研究结果表明，泾河下游南岸台塬边坡临界平衡边坡和不稳定边坡占80．8％，分布在西段和中段。滑坡发生的概率为多水年〉平水年〉少水年；年内夏雨集中的7月和秋雨集中的9月是易于发生滑坡的月份。灌溉期间的滑坡占68．8％，冬季发生的滑坡主要与灌溉有关。台塬区地下水位上升是诱发滑坡的根本原因，当地下水位上升与古土壤层重合时极易诱发滑坡。台塬区应根据地下水量平衡额定灌排量，使地下水位逐步下降至第五古土壤层之下是治理滑坡的根本之计。

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