不同坡度条件下的全风化花岗岩回填土边坡生态防护措施

张慧敏; 李燕清; 燕永锋; 孔志岗; 葛华; 刘振国; 袁庆飞

doi:10.13870/j.cnki.stbcxb.2022.06.020

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不同坡度条件下的全风化花岗岩回填土边坡生态防护措施

更新时间：2025-03-12

- 不同坡度条件下的全风化花岗岩回填土边坡生态防护措施
- Ecological Protection Measures of Completely Weathered Granite Backfill Slope Under Different Slope Conditions
- 水土保持学报 2022年36卷第6期页码：156-162
- 作者机构：
  
  1. 自然资源部高原山地地质灾害预报预警与生态保护修复重点实验室,昆明,650093
  2. 云南省交通运输厅, 云南省交通安全统筹中心,昆明,650031
  3. 昆明理工大学国土资源工程学院,昆明,650093
  4. 国家管网集团西南管道有限责任公司,成都,610041
  5. 中国水电基础局有限公司, 天津武清,301700
  6. 中国电建集团昆明勘察设计研究院有限公司,昆明,650051
- 作者简介：
- 基金信息：
  
  国家管网集团西南管道有限责任公司科技开发项目"油气管道通过全风化花岗岩地区水工保护与水土保持研究"(2018016);云南省重点研究计划项目(202203AC100003)
- DOI：10.13870/j.cnki.stbcxb.2022.06.020
  中图分类号： TU457
- 纸质出版：2022
- 稿件说明：
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张慧敏, 李燕清, 燕永锋, 等. 不同坡度条件下的全风化花岗岩回填土边坡生态防护措施[J]. 水土保持学报, 2022,36(6):156-162.

ZHANG Huimin, LI Yanqing, YAN Yongfeng, et al. Ecological Protection Measures of Completely Weathered Granite Backfill Slope Under Different Slope Conditions[J]. 2022, 36(6): 156-162.
张慧敏, 李燕清, 燕永锋, 等. 不同坡度条件下的全风化花岗岩回填土边坡生态防护措施[J]. 水土保持学报, 2022,36(6):156-162. DOI： 10.13870/j.cnki.stbcxb.2022.06.020.

ZHANG Huimin, LI Yanqing, YAN Yongfeng, et al. Ecological Protection Measures of Completely Weathered Granite Backfill Slope Under Different Slope Conditions[J]. 2022, 36(6): 156-162. DOI： 10.13870/j.cnki.stbcxb.2022.06.020.

摘要

生态防护措施是治理全风化花岗岩回填土边坡坡面侵蚀的有效手段

以中缅油气管道龙陵段全风化花岗岩回填土边坡为研究对象

通过室内人工模拟降雨试验

在坡长相同的情况下

选择不同坡度(10°

20°

30°和40°)

相同雨强(220 mm/h)的4种水土保持措施(工程措施、植物措施、工程+植物措施和工程+耕作措施)来分析坡面土壤侵蚀的变化规律并计算产流率和产沙率

评价其防治效果。结果表明:(1)不同坡度所设置的防护措施均能起到减流减沙的效果

最佳水土保持措施为工程+植物措施。(2)≤10°边坡在裸坡条件下坡体基本稳定

不需要任何防护措施;10°~20°

20°~30°边坡分别在植草(覆盖率100%)和植草+坡面截排水措施下的护坡措施效果较好

＞30°边坡必须在有固坡措施的基础上

坡面设置生物措施方能有效治理坡面侵蚀问题。(3)坡度的阈值不是固定不变的

坡面防护措施越复杂

阈值越大;且在不同的防护措施条件下

坡度对坡面累积产沙量影响最大。

Abstract

Ecological protection measures are effective means to control the slope erosion of completely weathered granite backfill slope. Taking the completely weathered granite backfill slope of Longling section of China-Myanmar oil and gas pipeline as the research object

through the indoor artificial simulated rainfall test

under the same slope length

four soil and water conservation measures (engineering measures

plant measures

engineering + plant measures and engineering + tillage measures) with different slopes (10°

20°

30° and 40°) and the same rainfall intensity (220 mm/h) were selected to analyze the change law of soil erosion on slope surface and calculate the flow yield rate and sediment yield rate to evaluate its control effect. The results showed that: (1) The protective measures set up in different slopes could reduce flow and sediment

and the best water and soil conservation measure was engineering+plant measure. (2) The slope≤10°was basically stable under the condition of bare slope

and no protective measure was required. For 10°~20° and 20°~30° slopes

the slope protection measures of grass planting (coverage rate 100%) and grass planting+slope interception and drainage measures are effective. For slopes ＞30°

biological measures must be set on the slope surface on the basis of slope consolidation measures to effectively control slope erosion. (3) The threshold of slope was not fixed. The more complex the slope protection measures were

the greater the threshold was. Under different protective measures

the slope had the greatest impact on the cumulative sediment yield.

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Keywords

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