保水剂用量对排土场土壤持水性的影响

doi:10.16843/j.sswc.2022.02.015

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (960 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract [Background] The waste dump soil(muck)produced by the open-pit coal mines is an artificial loose accumulation with poor water-holding characteristics and uneven pore distribution, which is not conducive to vegetation growth. This phenomenon is more serious in arid and semi-arid areas and has become an important factor restricting the use of vegetation for ecological restoration in mining areas. Based on this, different water-retaining agent content were applied to the muck of Ningxia open-pit coal mine to improve the water-holding characteristics, water availability and pore environment of the muck, and the optimal content was selected. [Methods] We set up 3 sampling points on the upslope, mid-slope, and downslope at the dumping site of Dafeng Mine in Rujigou, Shizuishan city, Ningxia. We then collected and mixed 0-20 cm muck, then passed them through a 2 mm soil sieve and determined its density and particle composition. The soil high-speed centrifuge was used to simulate the dehumidification process of the muck containing water-retaining agent, and Van Genuchten model was used to analyze the effect of the soil water characteristic curve, fitting parameters, water availability and pore distribution of the muck with different water-retaining agent content. [Results] 1) Muck’s water content decreased sharply with the increase of soil water suction at low suction stage, and it was positively correlated with water-retaining agent content, but the downward trend slowed down at low suction stage and had no significant change at high suction stage. 2) Saturated water content(θ_s)increased with the increase of water-retaining agent content. The inverse of air-entry value (α) reduced siginificantly by the use of water-retaining agent, but it increased first and then decreased, and the peak appeared at 1.0% treatment. Residual water content(θ_r)had no significant difference, and the value of shape parameter(n) had no obvious change rule.3) Water-retaining agent increased the total available water and easily available water content of muck by 1.12-3.31 times and 1.11-3.29 times respectively. The high water-retaining agent content(1.0%,1.5% and 2.0%)significantly increased slowly available water content by 3.00-4.38 times, and the unavailable water content only significantly reduced in 0.2% and 0.5% treatment. 4) The water-retaining agent significantly increased the mesopore by 1.2-2.6 times, the micropore by 1.8-3.8 times, and the super micropore by 1.2-4.7 times. [Conclusions] Our results reveal that water-retaining agent relies on its capillary pore to improve the water-holding characteristics of muck. The increase in its content may significantly increase the total available water content, easily available water content, and the ratio of mesopore,micropore,and super micropore. In order to be suitable for vegetation growth, water-retaining agent content applied to the muck should be <1.0%, and 0.5% is the optimal one.

Key words： waste dump water-retaining agent soil water characteristic curve water availability pore distribution

Received: 28 December 2020

PACS:

S152.7

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	HU Yang
	ZHANG Junjiao
	SHI Changqing
	ZHAO Tingning
	LIU Xiaoyong
	WU Chuan
	LIU Bingru

Cite this article:

HU Yang,ZHANG Junjiao,SHI Changqing, et al. Effects of water-retaining agent content on the water-holding characteristics of soil in waste dump[J]. SSWC, 2022, 20(2): 115-123.

URL:

http://journal12.magtechjournal.com/Jweb_stbc/EN/10.16843/j.sswc.2022.02.015 OR http://journal12.magtechjournal.com/Jweb_stbc/EN/Y2022/V20/I2/115

[1]	胡振琪,魏忠义.煤矿区采动与复垦土壤存在的问题与对策[J].能源环境保护,2003(3):3. HU Zhenqi,WEI Zhongyi.Problems and countermeasures of mining and reclamation soil in coal mine area[J].Energy Environmental Protection,2003(3):3.
[2]	路晓,王金满,李博,等.矿山土壤特性及其分类研究进展[J].土壤,2017,49(4):670. LU Xiao,WANG Jinman,LI Bo,et al.Progresses in soil properties and classification of mining soils[J].Soils,2017,49(4):670.
[3]	DEVINE D M,HIGGINBOTHAM C L.Synthesis and characterisation of chemically crosslinked N-vinyl pyrrolidinone (NVP) based hydrogels[J].European polymer journal,2005,41(6):1272.
[4]	KARIMI A,NOSHADI M,AHMADZADEH M.Effects of super absorbent polymer (igeta) on crop,soil water and irrigation interval[J].JWSS-Isfahan University of Technology,2009,12(46):403.
[5]	杜韬,王冬梅,张泽洲,等.煤矸石植生基质保水性能对黑麦草生长的影响[J].中国水土保持科学,2019,17(4):75. DU Tao,WANG Dongmei,ZHANG Zezhou,et al.Effect of the water-retaining property of coal gangue planting substrate on the growth of Lolium perenne[J].Science of Soil and Water Conservation,2019,17(4):75.
[6]	LIAO R,YANG P,ZHU Y.Effect of superabsorbent polymer on root water uptake and quantification of water uptake from soil profile in dry land[J].Soil Use and Management,2017,33(3):482.
[7]	JOHNSON M S.The effects of gel-forming polyacrylamides on moisture storage in sandy soils[J].Journal of the Science of Food and Agriculture,1984,35(11):1196.
[8]	BAI W,ZHANG H,LIU B,et al.Effects of super-absorbent polymers on the physical and chemical properties of soil following different wetting and drying cycles[J].Soil use and management,2010,26(3):253.
[9]	BUSSCHER W J,BJORNEBERG D L,SOJKA R E.Field application of PAM as an amendment in deep-tilled US southeastern coastal plain soils[J].Soil and Tillage Research,2009,104(2):215.
[10]	邵明安,王全九,黄明斌.土壤物理学[M].北京:高等教育出版社,2006:67. SHAO Ming'an,WANG Quanjiu,HUANG Mingbin. Soil physics[M].Beijing:Higher Education Press,2006:67.
[11]	VAN-GENUECHTEN M T.A closed-form equation for predicting the hydraulic conductivity of unsaturated soils[J].Soil Science Society of America Journal,1980,44(5):892.
[12]	XING Xuguang,MA Xiaoyi.Analysis of cracking potential and modification of soil-water characteristic curve by adding wheat residues[J].Soil Science Society of America Journal,2019,83(5):1299.
[13]	GARDNER W R,HILLEL D,BENYAMINI Y.Post-irrigation movement of soil water:1. Redistribution[J].Water Resources Research.1970,6(3):851.
[14]	BROOKS R H,COREY A T.Hydraulic properties of porous media and their relation to drainage design[J].Transactions of the ASABE,1964:3.
[15]	FREDLUND D G,XING Anqing.Equations for the soil-water characteristic curve[J].Canadian Geotechnical Journal,1994,31(4):521.
[16]	李增尧.陕北半干旱黄土区陡坡植被恢复土壤水分有效性[D].北京:北京林业大学,2018:15. LI Zengyao.Availability of soil water for steep slope vegetation restoration in semi-arid loess region of North Shaanxi[D].Beijing:Beijing Forestry University,2018:15.
[17]	尚熳廷,冯杰,刘佩贵,等.SWCC测定时吸力计算公式与最佳离心时间的探讨[J].河海大学学报(自然科学版),2009,37(1):12. SHANG Manting,FENG Jie,LIU Peigui,et al.On formulas for soil suction and optimum centrifugal time by use of SWCC[J]. Journal of Hohai University (Natural Sciences),2009,37(1):12.
[18]	冉艳玲.化学保水剂对土壤水分及物理特性的作用效应[D].陕西杨凌:西北农林科技大学,2014:9. RAN Yanling.Effects of super absorbent polyments on soil water moisture and physical properties[D].Yangling, Shaanxi:Northwest A&F University,2014:9.
[19]	雷志栋,杨诗秀,谢森传.土壤水动力学[M].北京:清华大学出版社,1988:18. LEI Zhidong,YANG Shixiu,XIE Senchuan. Soil Hydrodynamic[M]. Beijing:Tsinghua University Press,1988:18.
[20]	TABOADA M A,MICUCCI F G,COSENTINO D J,et al.Comparison of compaction induced by conventional and zero tillage in two soils of the Rolling Pampa of Argentina[J].Soil and Tillage Research,1998,49(1):57.
[21]	孙层层.土壤改良剂对土壤孔隙结构及其水分过程影响的定位研究[D].陕西杨凌:西北农林科技大学,2019:13. SUN Cengceng.Positoining research on the effects of soil amendments addition on soil pore structure and water process[D].Yangling, Shaanxi:Northwest A&F University,2019:13.
[22]	董义阳,赵成义,于志同,等.古尔班通古特沙漠南缘丘间地土壤水分特征曲线及模拟[J].水土保持学报,2017,31(1):166. DONG Yiyang,ZHAO Chengyi,YU Zhitong,et al.Characteristic curves and models analysis of soil water in inter-dune at the southern edge of Gurbantunggut desert[J].Journal of Soil and Water Conservation,2017,31(1):166.
[23]	潘登丽,倪万魁,苑康泽,等.洛川原状黄土的孔隙结构对土水特征曲线的影响[J].甘肃科学学报,2020,32(2):110. PAN Dengli,NI Wankui,YUAN Kangze,et al.Effect of pore structure of original loess in Luochuan on soil-water characteristic curve[J].Journal of Gansu Sciences,2020,32(2):110.
[24]	WOODHOUSE J,JOHNSON M S,党秀丽.超吸水性多聚物对作物幼苗存活和生长的影响[J].水土保持科技情报,2001(3):17. WOODHOUSE J,JOHNSON M S,DANG Xiuli.Effects of super absorbent polymers on survival and growth of crop seedlings[J].Technology of Soil and Water Conservation,2001(3):17.
[25]	冉艳玲,王益权,张润霞,等.保水剂对土壤持水特性的作用机理研究[J].干旱地区农业研究,2015,33(5):101. RAN Yanling,WANG Yiquan,ZHANG Runxia,et al.Research on the mechanism of super absorbent polymer to soil water-holding characteristic[J].Agricultural Research in the Arid Areas,2015,33(5):101.
[26]	NARJARY B,AGGARWAL P,SINGH A,et al.Water availability in different soils in relation to hydrogel application[J].Geoderma,2012(187/188):94.
[27]	KOUPAI J A,ESLAMIAN S S,KAZEMI J A.Enhancing the available water content in unsaturated soil zone using hydrogel to improve plant growth indices[J].Ecohydrology&Hydrobiology,2008,8(1):67.
[28]	AGABA H,ORIKIRIZA L J B,ESEGU J F O,et al.Effects of hydrogel amendment to different soils on plant available water and survival of trees under drought conditions[J].Clean-Soil,Air,Water,2010,38(4):328.
[29]	蔡典雄,王小彬,SAXTON K.土壤保水剂对土壤持水特性及作物出苗的影响[J].中国土壤与肥料,1999(1):13. CAI Dianxiong,WANG Xiaobing,SAXTON K.Effects of soil water retention agents on soil water holding characteristics and crop emergence[J].Soil and Fertilizer Sciences in China,1999(1):13.
[30]	DORRAJI S S,GOLCHIN A,AHMADI S.The effects of hydrophilic polymer and soil salinity on corn growth in sandy and loamy soils[J].Clean-Soil,Air,Water,2010,38(7):584.
[31]	JOHNSON M S.The effects of gel-forming polyacrylamides on moisture storage in sandy soils[J].Journal of the Science of Food and Agriculture,2010,35(11):1196.
[32]	GREGG L L,WANG Yintung. Hydrophilic polymers:Their response to soil amendments and effect on properties of a soil-less potting mix[J].Journal of the American Society for Horticultural Science,1990,115(6):943.
[33]	BOWMAN D C, EVANS R Y, PAUL J L,et al.Fertilizer salts reduce hydration of polyacrylamide gel and affect physical properties of gel-amended container media[J].Journal of the American Society for Horticultural Science,1990,115(3):382.
[34]	李小刚,崔志军,王玲英,等.盐化和有机质对土壤结构稳定性及阿特伯格极限的影响[J].土壤学报,2002,39(4):550. LI Xiaogang,CUI Zhijun,WANG Lingying,et al.Effects of salinization and organic matter on soil structural stability and Ateberg limit[J].Acta Pedologica Sinica,2002,39(4):550.
[35]	邢旭光.添加物与盐分对土壤持水与水分入渗-蒸发特性的影响[D].陕西杨凌:西北农林科技大学,2017:69. XING Xuguang.Influences of additives and salts on water retention and soil-water infiltration and evaporation[D].Yangling, Shaanxi:Northwest A&F University,2017:69.
[36]	王艳艳.子牙河流域土壤结构分形与其水力性质关系研究[D].郑州:华北水利水电大学,2020:34. WANG Yanyan.Study on the relationship between soil structure fractal and hydraulic property in Ziya river basin[D].Zhengzhou:North China University of Water Resources and Electric Power,2020:34.
[37]	舒凯民.基于土壤基本理化参数的土壤水分特征曲线Van-Genuechten模型预报研究[D].太原:太原理工大学,2017:26. SHU Kaimin.Research on prediction of soil water characteristic curve Van-Genuechten model based on soil basic physical and chemical parameters[D].Taiyuan:Taiyuan University of Technology,2017:26.
[38]	于元芬,郭明先,孟飞,等.不同植被下黏质红壤水分特征曲线研究[J].节水灌溉,2020(9):69. YU Yuanfen,GUO Mingxian,MENG Fei,et al.Water characteristic curves of the clayey red soil under different vegetation types[J].Water Saving Irrigation,2020(9):69.
[39]	丁新原,周智彬,雷加强,等.塔里木沙漠公路防护林土壤水分特征曲线模型分析与比较[J].干旱区地理,2015,38(5):985. DING Xinyuan,ZHOU Zhibin,LEI Jiaqiang,et al.Analysis and comparison of models for soil water characteristic curves of Tarim Desert Highway Shelterbelt[J].Arid Land Geography,2015,38(5):985.
[40]	范富,侯迷红,张庆国,等.不同质地土壤应用保水剂效果研究[J].干旱地区农业研究,2015,33(3):96. FAN Fu,HOU Mihong,ZHANG Qingguo,et al.Application effect research on super absorbent polymers in different texture[J].Agricultural Research in the Arid Areas,2015,33(3):96.
[41]	YANG Linlin,HAN Yuguo,YANG Peiling,et al.Effects of super absorbent polymers on infiltration and evaporation of soil moisture under point source drip irrigation[J].Irrigation and Drainage,2015,64(2):275.
[42]	SAHA A,SEKHARAN S,MANNA U.Super absorbent hydrogel (SAH) as a soil amendment for drought management:A review[J].Soil and Tillage Research,2020,204:104736.
[43]	孙梅,黄运湘,孙楠,等.农田土壤孔隙及其影响因素研究进展[J].土壤通报,2015,46(1):233. SUN Mei,HUANG Yunxiang,SUN Nan,et al.Advance in soil pore and its influencing factors[J].Chinese Journal of Soil Science,2015,46(1):233.
[44]	韩玉国,范云涛,赵鲁,等.施入保水剂土壤吸水膨胀试验[J].农业机械学报,2012,43(11):74. HAN Yuguo,FAN Yuntao,ZHAO Lu,et al.Experiment on water-swelling property of soil with application of water retention agent[J].Transactions of the Chinese Society for Agricultural Machinery,2012,43(11):74.