| 摘要: |
| 为解决陕南秦巴山区梯田垮坎的实际问题,采用理论计算的方法,对PP织物袋不同筑坎型式的抗滑稳定性、抗倾覆稳定性和抗剪强度进行了分析,结果显示:1)单坎型PP织物袋梯田田坎,坎坡α≥75°时,坎高控制在1.6 m 以下;60°<α<75°时,坎高应控制在1.8 m以下;α≤60°时,可以修筑2 m坎高。2)L坎型PP织物袋梯田田坎,坎坡α≥85°以上时,坎高应控制于1.8 m以下;坎坡80°≤α<85°时,坎高应控制于1.6 m以下;α<80°时,应以2 m 为宜。3)反坡L型PP织物袋梯田田坎,坎坡α≥85°以上时,坎高应控制在1.8 m以下;坎坡α<85°时,坎高应以2 m为宜。 |
| 关键词: PP织物袋 梯田 垮坎形式 稳定性 陕南秦巴山区 |
| DOI：10.11841/j.issn.1007-4333.2015.02.025 |
| 投稿时间：2014-05-04 |
| 基金项目:水利部科技推广项目(TG1308); 陕西省水土保持局科技示范项目(2010100) |
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| The main forms and stability of terraced walls build with polypropylene geotextile bags |
|
LI Guang-lu1, GAO Xia1, Liu Xing2
|
| (1.College of resources and environment, Northwest A& F University, Yangling 712100, China;2.Water and soil conservation station of Mianxian, Mianxian 724200, China) |
| Abstract: |
| In order to solve the collapse problem of terrace in Qinba Mountains of southern Shaanxi Province, the sliding stability, stability against overturning and shearing strength were theoretically evaluated on the different building ridge types with polypropylene geotextile bags.The results showed that.1) The suitable heights of inclined terrace wall built with polypropylene geotextile bags should be lower than 1.6 m, 1.8 m and 2.0 m at the slopes of ≥75°, 60°-75°, ≤60° respectively.2) The suitable heights of L-shaped terrace wall of polypropylene geotextile bags should be controlled below 1.8 m, 1.6 m and 2.0 m at the slopes of ≥85°, 80°-85°, ≤80° respectively.3) The wall heights of L-shaped with notched sill should be controlled below 1.8 and 2.0 m at the slopes > 85° and < 85° respectively. |
| Key words: polypropylene geotextile bags terrace terrace wall form stability Qinba mountains |
