| 黄土丘陵沟壑区沟道土地整治工程的排水设计 |
| 窦少辉1; 高建恩1,2; 李兴华1,3; 高哲3; 刘思璇1
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| 2020
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发表期刊 | 水土保持通报
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卷号 | 40期号:3页码:310-316 |
摘要 | [目的]针对黄土丘陵沟壑区沟道土地整治工程新造地排水困难而引发的土地不均匀沉降、盐碱
化、坝体管涌等灾害问题,探索沟道土地整治工程的排水设计方式,为今后相关领域的排水设计提供参考。
[方法]以陕西省延安市羊圈沟子流域为研究对象,基于小流域暴雨设计标准,结合室内试验结果和相关设
计规范,设计一种碎石与盲沟相结合的排水方式,并通过后期原型观测验证工程设计。[结果] ① 新造地排
水设计3条截面均为1m×0.5m ,长度分别为60 , 30 , 30m ,坡降为6%~10%的地下盲沟。盲沟用粒径50
~80mm的碎石填充,并用无纺土工布包裹,盲沟排水通过挡土坝收集于下游水窖并进行利用; ② 野外初
步监测表明,在次降雨54.2mm 的情况下,对比无工程措施的沟道新造地,碎石盲沟排水工程可分别使新
造地土壤含水率和电导率的增幅相对降低46.81% 和 3.61% 。[结论]碎石盲沟排水设计可有效缓解沟道
新造地土壤的蓄水和盐碱化程度,从而提升沟道新造地的风险响应能力。 |
其他摘要 | [ Objective ] Considering the problems of uneven settlement , salinization , dam piping , and other
disasters caused by the difficulty
of new land reclamation and drainage in gully areas of loess hilly regions ,
the drainage design method of a channel land consolidation project was explored to provide reference for
drainage design in related fields in the future. [ Methods ] The Yangjuangou subbasin in Yan ’ an City ,
Shaanxi Province , was taken as the study area , based on the design criteria of the stormwater in a small
basin.Indoor experimental results were combined with related design specifications.The subsurface drainage
method combined gravel and blind ditch , and it was verified by the engineering design through post prototype
observation. [ Results ] ① The new land drainage design had three cross - sectional areas of 1m × 0.5m ,
with lengths of 60 , 30 , and 30m , and a slope of 6% — 10% of the underground blind ditches.The blind
ditches were filled with gravel with particle size of 50 — 80mm and wrapped with nonwoven geotextile.Blindditch drainage was collected by the retaining dam in the downstream leeches and was utilized.② Initial
monitoring in the field indicated that
, in the case of a subrainfall of 54.2mm , compared with the new land
without any engineering
measures , the gravel blind ditch drainage project could reduce the increase in soil
moisture content and conductivity of new land by
46.81%and 3.61% , respectively. [ Conclusion ] The drainage
design using gravel blind ditch could effectively alleviate the water storage and salinization degree of new land
soil in the channel , thereby improving the risk - response capability. |
关键词 | 黄土丘陵沟壑区
沟道土地整治
碎石盲沟
排水设计
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收录类别 | 中文核心期刊要目总览
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语种 | 中文
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文献类型 | 期刊论文
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条目标识符 | sbir.nwafu.edu.cn/handle/361005/10008
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专题 | 水保所知识产出(1956---)
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作者单位 | 1.西北农林科技大学 水土保持研究所 2.中国科学院 水利部 水土保持研究所 水利部 水土保持生态工程技术研究中心 3.西北农林科技大学 水利与建筑工程学院
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推荐引用方式 GB/T 7714 |
窦少辉,高建恩,李兴华,等. 黄土丘陵沟壑区沟道土地整治工程的排水设计[J]. 水土保持通报,2020,40(3):310-316.
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APA |
窦少辉,高建恩,李兴华,高哲,&刘思璇.(2020).黄土丘陵沟壑区沟道土地整治工程的排水设计.水土保持通报,40(3),310-316.
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MLA |
窦少辉,et al."黄土丘陵沟壑区沟道土地整治工程的排水设计".水土保持通报 40.3(2020):310-316.
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文件名:
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黄土丘陵沟壑区沟道土地整治工程的排水设计_窦少辉.pdf
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