水土保持学报2017，Vol.31Issue(3)：85-90,95,7.DOI:10.13870/j.cnki.stbcxb.2017.03.015
砾石含量及粒径对崩岗崩积体渗透特性的影响
Effects of Content and Size of Gravel on Soil Permeability of the Colluvial Deposit in Benggang
摘要
Abstract
The aim of this study was to explore the influence of gravel on infiltration characteristics of the colluvial deposit.The cutting ring method was used to study the changes of infiltration characteristics of the colluvial deposit that mixed with different content and size of gravel.The results were as follows:(1) The steady infiltration time of the colluvial deposit was between 9 min and 10 min when the content of gravel was 0％,10％,20％,and 30％,but it was between 19 and 20 min when the content of gravel was 40％ and 50％.(2) The initial infiltration rate,steady infiltration rate,average infiltration rate,and accumulative infiltration volume of the colluvial deposit were enhanced with the increasing gravel content.The infiltration parameters changed little at 10％,20％,and 30％ gravel content when the colluvial deposit was mixed with gravels of 2-3 mm,3-5 mm,and 5-10 mm size.The values of infiltration parameters decreased with increasing size of gravels when the gravel content was 40 ％;when the gravel content was 50 ％,the values of infiltration parameters of the colluvial deposit mixed with 2-3 mm gravel were the least.(3) A further comparison showed that the Kostiakov model was more suitable for simulating the infiltration process of the colluvial deposit.关键词
崩岗/崩积体/砾石含量/砾石粒径/土壤渗透Key words
Benggang/colluvial deposit/gravel content/gravel size/soil permeability分类
农业科技引用本文复制引用
詹振芝,黄炎和,蒋芳市,林金石,李歆博,王晓妍,蔡佳翔..砾石含量及粒径对崩岗崩积体渗透特性的影响[J].水土保持学报,2017,31(3):85-90,95,7.基金项目
国家科技支撑计划项目(2014BAD15B0303) （2014BAD15B0303）
国家自然科学基金项目(41571272) （41571272）
福建省自然科学基金项目(2015J01156) （2015J01156）
