福建省水土保持试验站,福州,350003
[ "林敬兰(1970-),女,福建浦城人,博士,高级农艺师,主要从事水土保持科研和技术推广研究。E-mail:14705232@qq.com" ]
纸质出版:2019
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林敬兰. 花岗岩崩岗红土层土体胀缩特性研究[J]. 水土保持学报, 2019,33(2):87-92.
LIN Jinglan. Study on the Expansion and Contraction Characteristics of Red Soil Layer in Benggang of Granite Area[J]. 2019, 33(2): 87-92.
林敬兰. 花岗岩崩岗红土层土体胀缩特性研究[J]. 水土保持学报, 2019,33(2):87-92. DOI: 10.13870/j.cnki.stbcxb.2019.02.014.
LIN Jinglan. Study on the Expansion and Contraction Characteristics of Red Soil Layer in Benggang of Granite Area[J]. 2019, 33(2): 87-92. DOI: 10.13870/j.cnki.stbcxb.2019.02.014.
为研究崩岗土体因水分变化而发生干湿胀缩的特性,采集福建省安溪县典型崩岗区的红土层土样,通过室内无荷膨胀试验和收缩试验,分析不同初始干密度(1.3,1.4,1.5 g/cm3)、不同初始含水量(15%,20%,25%和30%)下土体的无荷膨胀率和线缩率。结果表明:当含水量较低时,初始干密度越大土体膨胀率也越大;当初始干密度相同时,土壤膨胀率随其初始含水率的增大而减小。当初始含水率相同时,土样膨胀率随其初始干密度的增大而增大。不同处理的土样收缩过程有一定差异,初始含水率高的土样线缩率大,土壤膨胀和收缩过程不一致,且均为不可逆过程。该研究结果在一定程度上揭示了土壤含水率和干密度与崩岗侵蚀之间的关系。
To study the characteristics of Benggang soil expansing and contracting with the moisture changes
soil samples of the red soil layer in the typical Benggang area of Anxi County
Fujian Province were collected. Through the experiment of non-charge expansion and shrinkage
non-charge expansion rates and the linear shrinkage rates of the soil samples under different initial dry densities (1.3
1.4 and 1.5 g/cm3) and different initial soil water contents (15%
20%
25% and 30%) were analyzed. The results showed that the soil expansion rate was larger when the initial dry density increased in the low soil moisture. When the initial dry density was the same
the soil expansion rates decreased with the increases of initial water contents. When the initial soil moisture content was the same
the soil sample expansion rates increased as its initial dry density increased. There was a difference in the shrinkage process of soil samples with different treatments. The soil shrinkage rate with high initial water content was large
and the soil expansion and contraction processes were inconsistent and both processes were irreversible. The result revealed the relationships between soil water contents and dry densities and Benggang erosion.
水利部,中国科学院,中国工程院.中国水土流失防治与生态安全[M].总卷.北京:科学出版社,2011:924-925.
王礼先,孙保平,余新晓,等.中国水利百科全书:水土保持分册[M].北京:中国水利水电出版社,2004:48-49.
梁音,宁堆虎,潘贤章,等.南方红壤区崩岗侵蚀的特点与治理[J].中国水土保持,2009(1):31-34.
张信宝.崩岗边坡失稳的岩石风化膨胀机理探讨[J].中国水土保持,2005(7):10-11.
魏玉杰,吴新亮,蔡崇法.崩岗体剖面土壤收缩特性的空间变异性[J].农业机械学报,2015,46(6):153-159.
张佩佩,张文太,贾宏涛,等.新疆北部地区与其他地区变性土壤线性膨胀系数的差异及矿物学机制[J].南京农业大学学报,2017,40(6):1074-1080.
张同娟,王益权,刘军,等.黄土地区影响土壤膨胀性的因子分析[J].西北农林科技大学学报(自然科学版),2007,35(6):185-189.
范本贤,黄英,孙书君,等.云南红土的循环胀缩特性研究[J].水土保持学报,2018,32(2):120-127.
章李坚,郭永春,代聪,等.含水率对膨胀土胀缩性能影响的试验研究[J].工程地质学报,2012,20(增刊1):108-112.
杨和平,张锐,郑健龙.有荷条件下膨胀土的干湿循环胀缩变形及强度变化规律[J].岩土工程学报,2006,(11):1936-1941.
李志清,余文龙,付乐,等.膨胀土胀缩变形规律与灾害机制研究[J].岩土力学,2010,31(增刊2):270-275.
吕殿青,邵明安.土壤收缩特征曲线的实验研究[J].土壤学报,2003,40(3):471-474.
吴珺华,袁俊平,杨松,等.干湿循环下膨胀土胀缩性能试验[J].水利水电科技进展,2013,33(1):62-65.
Hillel. Effect of plate impedance, wetting method, and aging on soil moisture retention[J].Soil Science,1966,102(2):135-139.
武科,赵闯,张文,等.干湿循环作用下膨胀土表观胀缩变形特性[J].哈尔滨工业大学学报,2016,48(12):121-127.
Lin J S, Huang Y H, Wang M K, et al. Assessing the sources of sediment transported in gully systems using a fingerprinting approach:An example from South-east China[J].Catena,2015,129:9-17.
阮伏水.福建崩岗沟侵蚀机理探讨[J].福建师范大学学报(自然科学版),1996(增刊1):24-31.
牛德奎,郭晓敏,左长清,等.我国南方红壤丘陵区崩岗侵蚀的分布及其环境背景分析[J].江西农业大学学报,2000,6(2):204-208.
国家规范标准.土工试验方法标准(GB/T 20123-1999)[S].北京:中国计划出版社,1999.
东南大学.土力学[M].北京:中国建筑工业出版社,2005.
李献民,王永和,肖宏彬,等.击实膨胀土胀缩速度特性的对比研究[J].铁道学报,2003,25(2):115-120.
侯龙清,黎剑华.土力学试验[M].北京:中国水利水电出版社,2012.
黄昌勇,徐建明.土壤学[M].3版.北京:中国农业出版社,2010.
曾召田.膨胀土干湿循环效应与微观机制研究[D].南宁:广西大学,2007.
唐大雄.工程岩土学[M].北京:地质出版社,1999.
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