天然沸石改良黑土的物理力学性质及其微观结构

doi:10.16843/j.sswc.2019.05.014

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Abstract [Background] The black soil area in northeast China is one of the important commercial grain supply areas such as corn and japonica rice. However, studies show that the soil erosion in this area is deteriorating, which seriously affects the fine fertility of black soil, and soil erosion is the main reason for this situation. Therefore, improving the anti-erosion ability of black soil is a necessary means to alleviate the current situation of soil erosion. Physical and mechanical properties and microstructure are the basic properties of black soil, which can indicate its resistance to erosion.[Methods] Natural zeolite used in this study was mainly inclined zeolite. XRF, XRD and SEM respectively were used to determine the main chemical composition of natural zeolite, mineral composition and surface morphology and structure. The black soil was taken from Songliao Plain as the research object. Natural zeolite was mixed into the black soil in the proportions of 0, 5%, 10%, 15% and 20%, and after 60 d of pot culture, triaxial compression test method, ring knife method, mercury injection instrument method were adopted to determine and analyze the mechanical properties, physical properties and microstructure change rules of different remolded soil.[Results] 1) With the increase of dosage of added natural zeolite, the cohesive force of the black soil increased gradually and was positively related with added natural zeolite dosage. Internal friction angle increased more than that of control group with added natural zeolite dosage, but there was no obvious regular pattern. The density of black soil increased gradually and was positively related with added zeolite dosage. Total porosity decreased and negatively related with added zeolite dosage. 2) As the mixing dosage of natural zeolite gradually increased, the microstructure of black soil changed, and the total pore volume showed a decreasing trend. The changes at both ends of each curve showed a slight upward trend of small pores and a slight downward trend of large pores, indicating that the proportion of smaller diameter pores in the black soil increased slightly. 3) Based on the analysis of relevant literature, it is reasonable and economic to select 10% natural zeolite to improve black soil.[Conclusions] Natural zeolite may improve the mechanical properties, physical properties and microstructure of black soil. The changes of microstructure and macroscopic physical properties are consistent with each other, which will lead to the changes of mechanical properties of the black soil and effectively improve the shear strength of the black soil. And this change can be explained to some extent by the internal structure changes of the black soil.

Key words： soil improvement black soil natural zeolite mechanical properties microstructure

Received: 07 January 2019

PACS:

S156.2

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	Articles by authors
	ZHANG Fan
	JI Xiaodong
	MA Yuanyuan
	LI Xinyuan

Cite this article:

ZHANG Fan,JI Xiaodong,MA Yuanyuan, et al. Physical and mechanical properties and microstructure of black soil modified by natural zeolite[J]. SSWC, 2019, 17(5): 120-127.

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http://journal12.magtechjournal.com/Jweb_stbc/EN/10.16843/j.sswc.2019.05.014 OR http://journal12.magtechjournal.com/Jweb_stbc/EN/Y2019/V17/I5/120

[1]	刘宝元, 阎百兴, 魏欣,等. 东北黑土区农地水土流失现状与综合治理对策[J]. 中国水土保持科学, 2008, 6(1):1. LIU Baoyuan, YAN Baixing, WEI Xin, et al. Current status and comprehensive control strategies of soil erosion for cultivated land in the northeastern black soil area of China[J]. Science of soil and Water Conservation, 2008, 6(1):1.
[2]	魏丹, 匡恩俊, 迟凤琴,等. 东北黑土资源现状与保护策略[J]. 黑龙江农业科学, 2016(1):158. WEI Dan, KUANG Enjun, CHI Fengqin, et al. Status and protection strategy of black soil resources in Northeast of China[J]. Heilongjiang Agricultural Science, 2016(1):158.
[3]	朱晓勇. 中美黑土区水土保持工作比较研究[D]. 长春:吉林大学,2017:11. ZHU Xiaoyong. The comparative study on the soil and water conservation in black soil region between China and America[D]. Changchun:Jilin University, 2017:11.
[4]	杨维鸽. 典型黑土区土壤侵蚀对土壤质量和玉米产量的影响研究[D]. 北京:中国科学院大学,2016:1. YANG Weige. Investigating the impacts of soil erosion on soil quality and corn yield in the typical black soil region[D]. Beijing:University of the Chinese Academy of Sciences, 2016:1.
[5]	JI Xiaodong, MA Yuanyuan, PENG Shaohao, et al. Simultaneous removal of aqueous Zn2+, Cu2+, Cd2+, and Pb2+ by zeolites synthesized from low-calcium and high-calcium fly ash[J]. Water Science & Technology, 2017, 76(8):2106.
[6]	张莉, 赵保卫, 李瑞瑞. 沸石改良土壤的研究进展[J]. 环境科学与管理, 2012, 37(1):39. ZHANG Li, ZHAO Baowei,LI Ruirui. Research progress of soil amelioration with zeolite[J]. Environmental Science and Management, 2012, 37(1):39.
[7]	马媛媛, 戴显庆, 彭绍好,等. 天然沸石对松嫩平原黑钙土理化性质和保水能力的影响[J]. 北京林业大学学报, 2018, 40(2):51. MA Yuanyuan, DAI Xianqing, PENG Shaohao, et al. Effects of natural zeolite on physical and chemical properties and water retention capacity of chernozem in Songnen Plain of northeastern China[J]. Journal of Beijing Forestry University, 2018, 40(2):51.
[8]	张薇. 滨海盐碱土改良后水盐动态及理化性质的研究[D]. 北京:北京林业大学, 2014:32. ZHANG Wei. Studies tothe water-salt dynamic and physico-chemical properties of coastal saline soil after improving[D]. Beijing:Beijing Forestry University, 2014:32.
[9]	戴显庆. 沸石增强黑土抗侵蚀能力和保水能力实验研究[D]. 北京:北京林业大学, 2016:37. DAI Xianqing.Experimental study on improving the Anti-erosion ability and water retention ability of black soil which modified by zeolite[D]. Beijing:Beijing Forestry University, 2016:37.
[10]	FORMANEK G E, MCCOOL D K, PAPENDICK R I. Freeze-thaw and consolidation effects on strength of a wet silt loam[J]. Transactions of the ASAE (USA), 1984, 27(6):1750.
[11]	林琳, 单博, 卢倩倩,等. 模拟机械压实黑土持水特征与孔隙分布[J]. 东北林业大学学报, 2014(12):102. LIN Lin, SHAN Bo, LU Qianqian, et al. Water retention characteristics and pore size distribution of black soil under simulated mechanical compaction[J]. Journal of Northeast Forestry University, 2014(12):102.
[12]	赵安平. 季冻区路基土冻胀的微观机理研究[D]. 长春:吉林大学, 2008:14. ZHAO Anping.A study on the mechanism of microstructure of frost heaving in subgrade soil in seasonal frost zone[D]. Changchun:Jilin University, 2008:14.
[13]	范昊明, 蔡强国, 陈光,等. 世界三大黑土区水土流失与防治比较分析[J]. 自然资源学报, 2005(3):389. FAN Haoming, CAI Qiangguo, CHEN Guang, et al. Comparative study of the soil erosion and control in the three major black soil regions in the world[J]. Journal of Natural Resources, 2005(3):389.
[14]	中国科学院南京土壤研究所土壤物理研究室. 土壤物理性质测定法[M]. 北京:科学出版社, 1978:66. Soil Physic Laboratory,Nanjing Institute of Soil Science, Chinese Academy of Sciences. Determination of soil physical properties[M]. Beijing:Science Press, 1978:66.
[15]	WASHBURN E W. Note on a method of determining the distribution of pore sizes in a porous material[J]. Proceedings of the National Academy of Sciences of the United States of America, 1921, 7(4):115.
[16]	DELAGE P, LEFEBVRE G. Study of the structure of a sensitive Champlain clay and of its evolution during consolidation[J]. Revue Canadienne De Géotechnique, 1984, 21(1):26.
[17]	闫小庆, 房营光, 张平.膨润土对土体微观孔隙结构特征影响的试验研究[J]. 岩土工程学报, 2011, 33(8):1303. YAN Xiaoqing, FANG Ying Guang, ZHANG Ping. Effects of natural zeolite on physical and chemical properties and water retention capacity of chernozem in Songnen Plain of northeastern China[J]. Journal of Geotechnical Engineering, 2011, 33(8):1303.
[18]	王静. 季冻区路基土冻融循环后力学特性研究及微观机理分析[D]. 长春:吉林大学, 2012:18. WANG Jing. Research on themechanical properties of subgrade soil after several freeze-thaw cycles in seasonally frozen soil region and microscopic mechanism analysis[D]. Changchun:Jilin University, 2012:18.
[19]	齐吉琳, 张建明, 朱元林. 冻融作用对土结构性影响的土力学意义[J]. 岩石力学与工程学报, 2齐吉琳, 张建明, 朱元林. 冻融作用对土结构性影响的土力学意义[J]. 岩石力学与工程学报, 2003, 22(增刊2):2694. QI Jilin, ZHANG Jianming, ZHU Yuanlin. Sinfluence of freezing-thawing on soil structure and its soil mechanics significance[J]. Journal of Rock Mechanics and Engineering, 2003, 22(s2):2694.
[20]	王云琦, 王玉杰, 张洪江,等. 重庆缙云山不同土地利用类型土壤结构对土壤抗剪性能的影响[J]. 农业工程学报, 2006,22(3):44. WANG Yunqi, WANG Yujie, ZHANG Hongjiang, et al. Impacts of soil structure on shear-resistance of soil under different land uses in Jinyun Mountain of Chongqing City[J]. Journal of Agricultural Engineering, 2006,22(3):44.
[21]	霍习良, 周恩湘, 姜淳,等. 沸石改良土壤结构性状的研究[J]. 河北农业大学学报, 1991(2):21. HUO Xiliang, ZHOU Enxiang, JIANG Chun, et al. A research of zeolite improving the structural property of soils[J]. Journal of Hebei Agricultural University, 1991(2):21.