干旱区生态环境知识资源中心(Arid): EXPERIMENTAL STUDY ON RESISTIVITY CHARACTERISTICS OF PURPLE SOIL IN DRYING SHRINKAGE PROCESS IN THREE GORGES RESERVOIR AREA, CHINA

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	EXPERIMENTAL STUDY ON RESISTIVITY CHARACTERISTICS OF PURPLE SOIL IN DRYING SHRINKAGE PROCESS IN THREE GORGES RESERVOIR AREA, CHINA
	Wang, Zhengcheng; Tang, Xin; Mao, Haitao; Shen, Jiwei; Zhou, Tingqiang
通讯作者	Tang, X
来源期刊	FRESENIUS ENVIRONMENTAL BULLETIN
ISSN	1018-4619
EISSN	1610-2304
出版年	2020
卷号	29 期号:4A 页码:3072-3083
英文摘要	Purple soil is widely distributed in the Three Gorges Reservoir area, and its resistivity can represent the basic parameters of soil conductivity. In recent years, due to the frequent occurrence of arid climate, soil moisture evaporation and soil shrinkage and deformation have been caused. We conducted a series of indoor drying experiments to explore the resistivity characteristics of the purple soil during shrinkage. The test results show that: (1) The changes in soil mass and water content during the dry shrinkage process can be divided into rapid evaporation and deceleration rate stage. The soil mass and water content in the early drying period decrease rapidly, and then the decline rate slows down. (2) The change in the axial / transverse shrinkage rate of the soil can also be divided into a rapid shrinkage stage and a deceleration rate stage, and the slope of the curve in the rapid shrinkage phase is larger. (3) AC resistivity decreases with the increase of current frequency, water content, and zinc content. With the development of drying, tensile stress is generated in the soil, which promotes contraction and deformation of the soil. (4) The conductive path of soil is divided into the first conductive path (soil and water), the second conductive path (water), the third conductive path (soil). The main reason for the lack of cracks in the soil is due to the large thickness of Vaseline and the soil. The research results can provide theoretical support for the determination of soil resistivity under dry shrinkage conditions.
英文关键词	Purple soil resistivity water content drying shrinkage current frequency
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000588493100058
WOS关键词	ELECTRICAL-RESISTIVITY ; CLAY ; DESICCATION ; CRACKING
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327463
作者单位	[Wang, Zhengcheng; Mao, Haitao; Shen, Jiwei; Zhou, Tingqiang] Chongqing Three Gorges Univ, Coll Civil Engn, Chongqing 404100, Peoples R China; [Tang, Xin] China Univ Min & Technol, Key Lab Coalbed Methane Resources & Reservoir For, Minist Educ, Xuzhou 221008, Jiangsu, Peoples R China; [Mao, Haitao] Wuhan Univ, Inst Water Conservancy & Hydroelect Power, Wuhan 430072, Peoples R China
推荐引用方式 GB/T 7714	Wang, Zhengcheng,Tang, Xin,Mao, Haitao,et al. EXPERIMENTAL STUDY ON RESISTIVITY CHARACTERISTICS OF PURPLE SOIL IN DRYING SHRINKAGE PROCESS IN THREE GORGES RESERVOIR AREA, CHINA[J],2020,29(4A):3072-3083.
APA	Wang, Zhengcheng,Tang, Xin,Mao, Haitao,Shen, Jiwei,&Zhou, Tingqiang.(2020).EXPERIMENTAL STUDY ON RESISTIVITY CHARACTERISTICS OF PURPLE SOIL IN DRYING SHRINKAGE PROCESS IN THREE GORGES RESERVOIR AREA, CHINA.FRESENIUS ENVIRONMENTAL BULLETIN,29(4A),3072-3083.
MLA	Wang, Zhengcheng,et al."EXPERIMENTAL STUDY ON RESISTIVITY CHARACTERISTICS OF PURPLE SOIL IN DRYING SHRINKAGE PROCESS IN THREE GORGES RESERVOIR AREA, CHINA".FRESENIUS ENVIRONMENTAL BULLETIN 29.4A(2020):3072-3083.