壤中滴灌条件下植被混凝土水分运移规律

王辰元; 周明涛; 胡旭东; 章涵

doi:10.13870/j.cnki.stbcxb.2022.02.023

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壤中滴灌条件下植被混凝土水分运移规律

更新时间：2024-11-07

- 壤中滴灌条件下植被混凝土水分运移规律
- Moisture Migration of Vegetation Concrete Under Buried Drip Irrigation in Soil
- 水土保持学报 2022年36卷第2期页码：173-180
- 作者机构：
  
  1. 三峡大学土木与建筑学院,湖北,宜昌,443002
  2. 三峡库区地质灾害教育部重点实验室(三峡大学),湖北,宜昌,443002
  3. 三峡库区生态环境教育部工程研究中心,湖北,宜昌,443002
- 作者简介：
  
  [ "王辰元(1996-),男,江苏南京人,硕士研究生,主要从事边坡防护与生态修复研究。E-mail:wcy@ctgu.edu.cn" ]
- 基金信息：
  
  国家重点研发计划项目（2017YFC05049-02）中国华电集团公司科研基金项目（12IJD201800018）
- DOI：10.13870/j.cnki.stbcxb.2022.02.023
  中图分类号： S152.7
- 纸质出版：2022
- 稿件说明：
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王辰元, 周明涛, 胡旭东, 等. 壤中滴灌条件下植被混凝土水分运移规律[J]. 水土保持学报, 2022,36(2):173-180.

WANG Chenyuan, ZHOU Mingtao, HU Xudong, et al. Moisture Migration of Vegetation Concrete Under Buried Drip Irrigation in Soil[J]. 2022, 36(2): 173-180.
王辰元, 周明涛, 胡旭东, 等. 壤中滴灌条件下植被混凝土水分运移规律[J]. 水土保持学报, 2022,36(2):173-180. DOI： 10.13870/j.cnki.stbcxb.2022.02.023.

WANG Chenyuan, ZHOU Mingtao, HU Xudong, et al. Moisture Migration of Vegetation Concrete Under Buried Drip Irrigation in Soil[J]. 2022, 36(2): 173-180. DOI： 10.13870/j.cnki.stbcxb.2022.02.023.

摘要

以复合人造土壤为研究对象

研究滴头流量、坡度因子对植被混凝土水分运移过程的影响效应

揭示壤中滴灌条件下植被混凝土湿润锋运移动态变化及含水率时空分布特征

探讨植被混凝土与天然土壤在水分运移方面的异同

为高陡边坡生态恢复下壤中滴灌系统的灌溉布局与灌溉制度提供理论参考。结果表明:滴头流量、坡度对垂直向上方向的水分运移影响最大

对水平方向的影响较小。灌水前期

土壤基质吸力的影响远大于重力

水分在垂直方向上的运移距离与水平方向相近;灌水中期

垂直向上与水平方向的渗透速率随坡度增大而变缓;灌水后期

垂直向下的渗透速率逐渐趋于由重力为主要诱使因素的稳定速率;相同灌水量下

流量越小

湿润锋运移距离越远;水分再分布时段

受重力梯度和基质势的综合影响

垂直向下的运移距离最远

水平方向次之

垂直向上最近;含水率等值线呈椭圆形分布

且垂直向下的含水率均大于垂直向上和水平方向的含水率。采用幂函数与二次函数均可拟合植被混凝土湿润锋运移距离与入渗时间的关系

其中幂函数拟合程度更佳(R2>0.95)

但R2略小于一般天然土壤

拟合结果扩大了土壤水动力学理论在复合土壤的适用范围。

Abstract

The purpose of this study was to explore the influence of dripper discharge and slope factors on vegetation-concrete moisture migration by using composite artificial soil. The dynamics of wetting front of vegetation concrete and spatial-temporal distribution of soil moisture under buried drip irrigation in soil were studied

and the similarities and differences of moisture transfer between vegetation concrete and natural soil were discussed as well

which could provide theoretical reference for irrigation scheduling of drip irrigation during ecological restoration of high-steep slope. The results showed that dripper discharge rate and slope had the greatest influence on vertically upward moisture migration

but had little impact in horizontal direction. At the earlier stage of irrigation

the influence of soil matrix suction was much greater than that of gravity

and the vertically upward distance of moisture migration was similar to the horizontal distance. During the middle period

the infiltration rate in vertically upward and horizontal directions decreased with the increases of slopes. At the later stage

the vertically downward migration rate gradually tended to be stable

which was mainly induced by gravity. At the same irrigation volume

the smaller the flow rate

the farther the wetting front would migrate. During the period of moisture redistribution

the distance of vertically downward migration was the farthest

followed by horizontal direction

and vertically upward distance was the nearest. The contours of moisture content were oval

and vertically downward moisture content were larger than those in vertically upward and horizontal direction. Both power and quadratic functions could fit the relationship between the distance of wetting front migration and infiltration time

of which power function was better(R2>0.95)

but R2 was slightly smaller than that of natural soil

which expanded the application scope of Soil Hydrodynamics in the composite soil.

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references

周明涛,许文年,夏栋.向家坝水电站工程扰动区不同类型边坡土壤酸碱度与肥力分析[J].应用生态学报,2010,21(4):1031-1037.

郭义强.生态保护修复有助于碳中和[J].资源与人居环境,2021(4):52-53.

Cai Y H, Wu P T, Zhang L, et al. Simulation of soil water movement under subsurface irrigation with porous ceramic emitter[J].Agricultural Moisture Management,2017,192:244-256.

Cai Y H, Zhao X, Wu P T, et al. Effect of soil texture on water movement of porous ceramic emitters:A simulation study[J/OL].Water,2019,11(1). DOI:10.3390/w11010022.

钟韵,费良军,傅渝亮,等.多因素影响下土壤上升毛管水运动特性HYDRUS模拟及验证[J].农业工程学报,2018,34(5):83-89.

冀荣华,刘秋霞,陈振海,等.基于HYDRUS-3D模型的微润灌溉土壤水分入渗模拟[J].农业机械学报,2017,48(增刊1):290-295.

王炳尧,韦伟,刘立超,等.直插式地下滴灌土壤湿润体特征值变化规律及灌溉效果分析[J].灌溉排水学报,2019,38(4):1-10.

Gardner W R, Hillel D, Benyamini Y. Post-irrigation movement of soil water:1. Redistribution[J].Moisture Resources Research,1970,6(3):851-861.

Skaggs T H, Trout T J, Simunek J, et al. Comparison of HYDRUS-2D simulations of drip irrigation with experimental observations[J].Journal of Irrigation and Drainage Engineering,2004,130(4):304-310.

Sun L B, Chang X M, Yu X X, et al. Effect of freeze-thaw processes on soil water transport of farmland in a semi-arid area[J].Agricultural Moisture Management,2021,252:e106876.

Zhao P, Tang X Y, Zhao P, et al. Mixing of event and pre-event water in a shallow Entisol in sloping farmland based on isotopic and hydrometric measurements, SW China[J].Hydrological Processes,2016,30(19):3478-3493.

王强民,董书宁,王皓,等.西部风沙区采煤塌陷地裂缝影响下的土壤水分运移规律及调控方法[J].煤炭学报,2021,46(5):1532-1540.

Zhao B Q, Xia L, Xia D, et al. Effect of cement content in vegetation concrete on soil physico-chemical properties, enzyme activities and microbial biomass[J].Nature Environment and Pollution Technology,2018,17(4):1065-1075.

Li C, Zhao S Y, Zhou H Q, et al. A review of research progress of vegetation concrete on coastal highway slope[J].Journal of Coastal Research,2019,94(S1):367-371.

刘大翔,高贤,许亚坤,等.施加生物炭对植被混凝土理化性质及狗牙根生物量的影响[J].应用基础与工程科学学报,2021,29(1):1-14.

国家能源局.水电工程陡边坡植被混凝土生态修复技术规范NB/T 35082-2016[S].北京:中国电力出版社,2016.

中华人民共和国水利部.土工试验方法标准GB/T 50123-2019[S].北京:中国计划出版社,2019.

蔡耀辉,吴普特,张林,等.微孔陶瓷渗灌与地下滴灌土壤水分运移特性对比[J].农业机械学报,2017,48(4):242-249.

Al-Naeem M A. Use of pulse trickles to reduce clogging problems in trickle irrigation system in Saudi Arabia[J].Pakistan Journal of Biological Sciences,2008,11(1):68-73.

张建丰,杨潇,帖西宁,等.深层坑渗灌不同开孔方式单点土壤入渗特性研究[J].农业工程学报,2012,28(21):80-88.

郝瑞,施斌,曹鼎峰,等.基于AHFO技术的毛细水运移模型验证试验研究[J].岩土工程学报,2019,41(2):376-382.

李涛,张建丰,程慧娟,等.深层坑渗灌田间单点入渗湿润锋分布特性及拟合模型研究[J].干旱地区农业研究,2010,28(4):36-39,45.

Budd C J, Stockie J M. Multilayer asymptotic solution for wetting fronts in porous media with exponential moisture diffusivity[J].Studies in Applied Mathematics,2016,136(4):424-458.

Assouline S, Selker J. Introduction and evaluation of a Weibull hydraulic conductivity-pressure head relationship for unsaturated soils[J].Water Resources Research,2017,53(6):4956-4964.

王承书,杨晓楠,孙文义,等.极端暴雨条件下黄土丘陵沟壑区土壤蓄水能力和入渗规律[J].土壤学报,2020,57(2):296-306.

Taghavi S A, Marino M A, Ralston D E. Infiltration from trickle irrigation source[J].Journal of Irrigation and Drainage Engineering,1984,110(4):331-341.

苏李君,蔺树栋,王全九,等.土壤水力参数对点源入渗湿润体形状的影响[J].农业机械学报,2020,51(1):264-274.

何振嘉,傅渝亮,王博,等.涌泉根灌不同浓度肥液入渗特性及土壤湿润体模型研究[J].农业工程学报,2018,34(24):90-99.

Clemmens A J. A statistical analysis of trickle irrigation uniformity[J].Transactions of the ASAE,1987,30(1):169-175.

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