Non-linear Distribution of Soil Pressure Under Water Attenuation on Purple Soil Sloping Farmland Bunds

Luo Huajin; Wei Jie; Sun Yuhui

doi:10.13961/j.cnki.stbctb.2019.06.022

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Non-linear Distribution of Soil Pressure Under Water Attenuation on Purple Soil Sloping Farmland Bunds

- Non-linear Distribution of Soil Pressure Under Water Attenuation on Purple Soil Sloping Farmland Bunds
- Bulletin of Soiland Water Conservation Vol. 39, Issue 6, Pages: 149-154(2019)
- 作者机构：
  
  1. 重庆师范大学地理与旅游学院,重庆,401331
  2. 三峡库区地表过程与环境遥感重庆市重点实验室,重庆,401331
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2019.06.022
  CLC：
- Published：2019
- 稿件说明：
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Luo Huajin, Wei Jie, Sun Yuhui. Non-linear Distribution of Soil Pressure Under Water Attenuation on Purple Soil Sloping Farmland Bunds[J]. Bulletin of Soiland Water Conservation, 2019, 39(6): 149-154.
DOI：

Luo Huajin, Wei Jie, Sun Yuhui. Non-linear Distribution of Soil Pressure Under Water Attenuation on Purple Soil Sloping Farmland Bunds[J]. Bulletin of Soiland Water Conservation, 2019, 39(6): 149-154. DOI： 10.13961/j.cnki.stbctb.2019.06.022.

摘要

[目的] 揭示紫色土坡耕地埂坎土压力分布特征及其影响因素，为三峡库区乃至长江上游地区的紫色土坡耕地埂坎优化设计、建设与维护提供科学依据。[方法] 采用土槽模拟试验，向土槽注水至土壤基本饱和，使用静态应变仪分层采集土压力，采用烘干法测量各层土壤水分含量，分析土壤水分衰减过程中土压力变化特征。[结果] ①土压力随着土层深度的增加呈非线性分布，表现为土压力先随着土层深度的增加而增大，在距离试验土槽底部0.375 H左右达到最大，然后又随着土层深度的增加而减小。②试验条件下，土壤水分饱和后随着时间的变化呈近似线性衰减，并对土压力产生了显著影响（p<0.01），但不同土层间存在一定差异。③土层深度和土壤水分含量的交互效应对土压力的影响显著（p<0.01）。[结论] 三峡库区紫色土坡耕地埂坎土压力呈非线性分布，土层深度和土壤水分含量及其交互效应对埂坎土压力均存在显著影响。

Abstract

[Objective] The distribution characteristics of soil pressure on purple soil sloping farmlands bunds and its influencing factors were studied in order to provide basis for the optimal design

construction and maintenance of the purple soil sloping farmland bunds in the Three Gorges reservoir area and the upper reaches of the Yangtze River.[Methods] Using soil bin simulation test

water was injected into the soil bin until the soil was basically saturated. Soil pressure was determined by static strain gauge

and soil moisture content was measured by drying method to analyze the variation characteristics of soil pressure under water attenuation.[Results] ① The soil pressure presented a nonlinear distribution with the increase of soil depth

which showed that the soil pressure initially increased with the increase of soil depth

reached the maximum at about 0.375 H from the bottom of the test device

and subsequently decreased with the increasing soil depth. ② Under the experimental conditions

the change of soil moisture content presented an approximate linear attenuation with time

and had a significant impact on the soil pressure(p<0.01)

but there were some differences among different soil layers. ③ The interaction effect of soil depth and soil moisture content on soil pressure was significant(p<0.01).[Conclusion] The distribution of soil pressure show a non-linear trend on purple-soil sloping farmlands bunds in the Three Gorges reservoir area

the soil depth

soil moisture content and their interactive effects have significant effects on the soil pressure.

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references

Teshome A, Rolker D, Graaff J D. Financial viability of soil and water conservation technologies in Northwestern Ethiopian highlands[J]. Applied Geography, 2013,37(1):139-149.

Taye G, Poesen J, Vanmaercke M, et al. Evolution of the effectiveness of stone bunds and trenches in reducing runoff and soil loss in the semi-arid Ethiopian highlands[J]. Zeitschrift Fur Geomorphologie, 2015,59(4):477-493.

李进林,韦杰,贺秀斌.紫色土坡耕地不同规格土坎稳定性分析[J].中国水土保持科学,2018,16(5):1-9.

陈雪,蔡强国,王学强.典型黑土区坡耕地水土保持措施适宜性分析[J].中国水土保持科学,2008,6(5):44-49.

汪三树,史东梅,蒋光毅,等.紫色丘陵区坡耕地生物埂的土壤结构稳定性与抗蚀性分析[J].水土保持学报,2012,26(6):31-35.

赵晓中,潘东兴,刘福臣,等.刚性挡土墙主动土压力的计算通式及影响因素分析[J].山东农业大学学报:自然科学版,2003,34(4):548-552.

赵吉坤,温娇娇.填土含水率对挡土墙土压力影响的试验分析[J].土木建筑与环境工程,2012,34(S2):155-160.

宋自影,王飞.水分入渗对土壤内部综合压力影响的试验研究[J].农机化研究,2012,34(7):191-195.

朱建强.陕南土坎梯地垮坎的原因分析及防治对策[J].水土保持通报,1994,14(3):44-47.

李进林,韦杰.三峡库区坡耕地埂坎类型、结构与利用状况[J].水土保持通报,2017,37(1):229-233.

蒲玉琳,谢德体,倪九派,等.紫色土区坡耕地植物篱模式综合生态效益评价[J].中国生态农业学报,2014,22(1):44-51.

Amare T, Zegeye A D, Yitaferu B, et al. Combined effect of soil bund with biological soil and water conservation measures in the Northwestern Ethiopian highlands[J]. Ecohydrology and Hydrobiology, 2014,14(3):192-199.

彭述权,周健,樊玲,等.考虑土拱效应刚性挡墙土压力研究[J].岩土力学,2008,29(10):2701-2707.

杨果林,黄向京.不同气候条件膨胀土路堤土压力的变化规律试验研究[J].岩土工程学报,2005,27(8):948-955.

陈雪华,律文田,王永和.桥台台背土压力的试验研究[J].岩土力学,2006,27(8):1407-1410.

Paik K H, Salgado R. Estimation of active earth pressure against rigid retaining walls considering arching effects[J]. Geotechnique, 2003,53(53):643-653.

肖衡林,余天庆.山区挡土墙土压力的现场试验研究[J].岩土力学,2009,30(12):3771-3775.

董捷,张永兴,黄治云.柔性板桩板墙加固斜坡填方地基的土压力分配问题研究[J].岩土力学,2010,31(8):2489-2495.

芮瑞,叶雨秋,陈成,等.考虑墙壁摩擦影响的挡土墙主动土压力非线性分布研究[J].岩土力学,2019,40(5):1797-1804.

郑烨,陈振华,张开伟,等.不同填料下钱塘江古海塘塘背土压力现场试验研究[J].岩土力学,2014,35(6):1623-1628.

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