ISWC OpenIR  > 水保所知识产出(1956---)
工程堆积体标准小区界定与可蚀性因子改进
马洪超1; 谢永生1,2; 赵暄2,3; 吴媛媛1; 丁新辉1
2016
Source Publication水土保持学报
Volume30Issue:3Pages:59-64
Abstract

将USLE模型应用于工程堆积体侵蚀预报时结果偏差较大,这是因为其标准小区与土壤可蚀性因
子不适合直接应用于工程堆积体侵蚀预报。针对这一问题,结合对我国6大水蚀类型区工程堆积体参数
的调查、统计、分析,界定工程堆积体标准小区的坡度、坡长;结合国内外已有研究成果,分析论证堆积体可
蚀性因子的改进办法,并引用相关数据验证其可行性。结果表明,6大区域工程堆积体坡度、坡长及坡面物
质组成均与USLE中规定的标准小区相差较大;为了尽量消除误差,建议工程堆积体标准小区坡度采取众
数35°,坡长采取平均值5m;堆积体可蚀性因子更名为土石质因子Tr,并将单位体积土石混合体中石砾总
表面积Cs,作为石砾因素指标纳入堆积体土石质因子Tr中,与堆积体物质中土壤可蚀性因子K 共同构建
工程堆积体土石质因子函数。验证结果表明,堆积体可蚀性因子改进办法是可行的。工程堆积体坡度、坡
长的界定及可蚀性因子的改进,对提高基于USLE模型的堆积体侵蚀预报精度有重要意义。

Other Abstract

The large deviation of engineering accumulations erosion prediction by the model of USLE was due
to the unit plot and the soil erodibility factor could not be directly used to erosion prediction of engineering
accumulations.This study aimed to define the gradient and slope length of engineering accumulations unit
plot according to the survey of engineering accumulations from six water erosion areas in China,analyzed the
improvement method of engineering accumulations erodibility factor according to relative research achievements
and proved the feasibility of this improvement method by published data.Survey results showed that
the gradient,slope length and surface composition of engineering accumulations from six water erosion areas
are large different from the unit plot of the model of USLE.So,we chose the mode 35°of gradient and the
mean 5mof slop length of engineering accumulations from six water erosion areas as the gradient and the
slop length of engineering accumulations unit plot.In order to distinguish soil erodibility factor Kfrom engineering
accumulations erodibility factor,we gave engineering accumulations erodibility factor a name of soil
and rock factor(Tr).Brought the index of unit volume soil-rock mixture's total surface area of rock(Cs)into
soil and rock factor,building a function of Trwith soil erodibility factor K.Verification results showed that
this improvement method of engineering accumulations erodibility factor was reasonable.In conclusion,the
defining of the gradient and slope length of engineering accumulations unit plot and the improvement method
of engineering accumulations erodibility factor was significant to enhance the accuracy of engineering accumulations
erosion prediction by the model of USLE.

Keyword工程堆积体 侵蚀预报 Usle 标准小区 可蚀性因子
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8554
Collection水保所知识产出(1956---)
Affiliation1.中国科学院水利部水土保持研究所
2.西北农林科技大学资源环境学院
3.西安高科集团高科房产有限责任公司
First Author Affilication中国科学院水利部水土保持研究所
Recommended Citation
GB/T 7714
马洪超,谢永生,赵暄,等. 工程堆积体标准小区界定与可蚀性因子改进[J]. 水土保持学报,2016,30(3):59-64.
APA 马洪超,谢永生,赵暄,吴媛媛,&丁新辉.(2016).工程堆积体标准小区界定与可蚀性因子改进.水土保持学报,30(3),59-64.
MLA 马洪超,et al."工程堆积体标准小区界定与可蚀性因子改进".水土保持学报 30.3(2016):59-64.
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