酸雨作用下红黏土渗透性影响机制及压实度控制

doi:10.13722/j.cnki.jrme.2015.0040

摘要
图/表
参考文献(21)
相关文章 (15)

全文: PDF (2059 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要酸雨会溶解红黏土中的部分物质，是导致红黏土路基病害的重要因素。研究红黏土在酸雨环境下的渗透机制、提出红黏土路基压实度建议标准对于红黏土地区路基设计具有很强的工程实际意义。设计新型的淋溶仪器，用不同pH值溶液模拟酸雨对原状红黏土进行淋溶后，进行渗透性试验、物相分析试验及电镜微结构扫描试验，深入分析酸雨对桂林红黏土渗透性的影响因素及影响机制；进一步通过试验研究重塑红黏土渗透系数与压实度的变化关系。结果表明：红黏土渗透系数随干密度增大而减小；红黏土中的主要物质成分包括铁、硅、铝和钾4种金属元素的化合物均能被酸性物质溶解，随地下水迁移而流失，造成土体结构孔隙比增大、内部的孔隙连通性增强，酸雨的pH值越小，这些物质的溶解程度越大，对红黏土的渗透性影响越大；当在pH值≥3的酸雨地区用红黏土作为路基填料时，控制路基压实度≥95%可有效预防酸雨对红黏土的不利作用。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	肖桂元1
	2
	陈学军2
	韦昌富2
	3
	黄翔2
	陈龙2

关键词 ：土力学, 酸雨作用, 红黏土, 渗透性, 压实度, 结构损伤

Abstract：Acid rain will dissolve some of the material of red clay，which is the important factor of red clay roadbed diseases. The research on the penetration mechanism of red clay in acid environment and recommendation of subgrade compaction standards to red clay roadbed has a strong practical significance. Use simulated acid rain of different pH value the solution leaching undisturbed of red clay by designing new leaching equipment to conducting penetration test，phase analysis test and SEM experiments，to deeply analyze the impact of acid rain on the factors and mechanisms of Guilin red clay permeability. Further research on the relationship between changes in permeability and the degree of compaction of reshape red clay by the experimental study. The results show that：Red clay permeability decreases with increasing dry density. Chemical compounds of four metal elements(Fe，Si，Al，K)，which are the main compositions in laterite soil，all can be dissolved by acidic substances，and due to the dissolution caused by acid rain. The lower the pH value of acid rain，the greater the degree of dissolution of these substances，the greater the influence on permeability of laterite soil. When using red clay as roadbed filler in acid rain areas of pH value not less than 3，the degree of compaction not less than 95% could be controlled to prevent the adversely affect of acid rain on the laterite soil subgrade effectively.

Key words： soil mechanics effects of acid rain red soil permeability compaction structural damage

引用本文:

肖桂元1，2，陈学军2，韦昌富2，3，黄翔2，陈龙2 . 酸雨作用下红黏土渗透性影响机制及压实度控制[J]. 岩石力学与工程学报, 2016, 35(S1): 3283-3290.
XIAO Guiyuan1，2，CHEN Xuejun2，WEI Changfu2，3，HUANG Xiang2，CHEN Long2. Mechanism of permeability and control of compaction for red clay under the influence of acid rain. , 2016, 35(S1): 3283-3290.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2015.0040 或 https://rockmech.whrsm.ac.cn/CN/Y2016/V35/IS1/3283

[1]	孔令伟，陈正汉.特殊土与边坡技术发展综述[J].土木工程学报，2012，45(5)：141-161.(KONG Lingwei，CHEN Zhenghan. Advancementin the techniques for special soils and slopes[J]. China Civil Engineering Journal，2012，45(5)：141-161.(in Chinese))
[2]	RODHE H，GREENFELT P，WISNIEWSKI J，etal. Acid reign¢95 conference summary statement[J]. Water Air Soil Pollt，1995，85(1)：1-14.
[3]	汪雅各.模拟酸雨对土壤金属离子的淋溶和植物有效性的影响[J].环境科学，1988，9(2)：22-26.(WANG Yage.Simulated acid rain leaching on metal of soil ions and affect the effectiveness of the plant[J]. Environmental Science，1988，9(2)：22-26.(in Chinese))
[4]	朱寿增.柳州市酸雨对土体物理力学性质的影响[J].桂林工学院学报，1996，16(2)：143-149.(ZHU Shouzeng. A discussion about the effect of acid rain on soil mass physical and mechanical nature in Liuzhou city[J]. Journal of Guilin University of Technology，1996，16(2)：143-149.(in Chinese))
[5]	孙重初.酸液对红黏土物理力学性质的影响[J].岩土工程学报，1989，11(4)：89-93.(SUN Zhongchu. Impact of acid on the physical and mechanical properties of red clay[J]. Journal of geotechnical engineering，1989，11(4)：89-93.(in Chinese))
[6]	伯桐震，黄英，石崇喜，等.酸污染红土物理性质的变化特征[J].水文地质工程地质，2012，(2)：111-115.(BO Tongzhen，HUANG Ying，SHI Chongxi，et al. Variation characteristics of physical properties of Acid pollution laterite[J].Hydrogeology and Engineering Geology，2012，(2)：111-115.(in Chinese))
[7]	COLEMAN J D，FARRAR D M. The moisture characteristics composition and structural analysis of a red clay soilfrom Nyeri，Kenya[J].Geotechnique，1964，13(4)：262-276.
[8]	BROOKS R H，COREY A T. Hydraulic properties of porous media[M]. Colorado：Fort Collins，1964：132-144.
[9]	孔令伟，罗鸿禧. 游离氧化铁形态转化对红黏土工程性质的影响[J]. 岩土力学，1991，14(4)：25-39.(KONG Lingwei，LUO Hongxi. Effect of the conversion in form of free Iron Oxide on the engineering property of the red clay[J]. Rock and Soil Mechanics，1991，14(4)：25-39.(in Chinese))
[10]	孔令伟，罗鸿禧，袁建新. 红黏土有效胶结特征的初步研究[J]. 岩土工程学报，1995，17(5)：42-47.(KONG Lingwei，LUO Hongxi，YUAN Jianxin. Preliminary study on the effective cementation characteristics of the red clay[J]. Chinese Journal of Geotechnical Engineering，1995，17(5)：42-47.(in Chinese))
[11]	孔令伟，郭爱国，吕海波. 典型红黏土的基本特征与微观结构特征[J].岩石力学与工程学报，2001，20(1)：973-977.(KONG Lingwei，GUO Aiguo，LUHaibo. The basic and microstructure characteristics of the typical laterite soil[J].Chinese Journal of Rock Mechanics and Engineering，2001，20(1)：973-977.(in Chinese))
[12]	程昌炳，康哲良，徐昌伟. 针铁矿与高岭土胶结本质的微观研究初探[J]. 岩土力学，1992，13(2/3)：122-127.(CHENG Changbing，KANG Zheliang，XU Changwei. Study on chemical kinetics of reaction between goethite and chlorhydric acid[J]. Rock and Soil Mechanics，1992，13(2/3)：122-127.(in Chinese))
[13]	程昌炳，徐昌伟，孔令伟，等. 天然针铁矿胶结土与盐酸反应的化学动力学及其力学特性预报[J].岩土工程学报，1995，17(3)：44-50.(CHENG Changbing，XU Changwei，KONG Lingwei，etal. Chemical kinetics for reaction of the clay samples cemented by nature goethite with ohlorhydric acid and the prediction of their mechanical propertics[J]. Chinese Journal of Geotechnical Engineering，1995，17(3)：44-50.(in Chinese))
[14]	黄运湘，廖柏寒，王志坤.模拟酸雨对森林红壤中铝的溶出及不同土层酸度变化的影响[J].生态环境，2005，14(4)：478-482.(HUANG Yunxiang，LIAO Bohan，WANG Zhikun. Effects of simulated acid rains on Al release and acidity changes in different horizons in forest red soils[J]. Ecology and Environment，2005，14(4)：478-482.(in Chinese))
[15]	廖柏寒，曾敏，郭朝晖，等.模拟酸雨下自然红壤与污染红壤中Cd，Cu，Zn的释放特征[J].环境化学，2009，28(3)：343-349.(LIAO Bohan，ZENG Min，GUO Zhaohui，et al. Release characteristics of Cd，Cu and Zn from the natural and contam inated red soils under simulated acid rain[J].Environmental Chemistry，2009，28(3)：343-349.(in Chinese))
[16]	钟汉珍，袁泉. 长江流域酸雨危害及对策分析[J]. 华中农业大学学报：社会科学版，2002，(3)：18-21.(ZHONGHanzhen，YUAN Quan.Acid rain damage and countermeasureson the Yangtze River basin[J].Huazhong Agricultural University：Social Sciences，2002，(3)：18-21.(in Chinese))
[17]	吴丹，王式功，尚可政. 中国酸雨研究综述[J]. 干旱气象，2006，24(2)：70-77.(WU Dan，WANGShiwu，SHANG Kezheng. Progress in research of acid rain in China[J]. Arid Mereorology，2006，24(2)：70-77.(in Chinese))
[18]	肖桂元，虞梦泽，陈学军，等. 非饱和土体淋溶及渗流场模拟装置[P]. 中国：ZL201220361560.7，2013-01-23.(XIAO Guiyuan，YU Mengze，CHENXuejun，etal.Simulator of unsaturated soil leaching and percolation field[P].China：ZL201220361560.7，2013-01-23.(in Chinese))
[19]	DANIEL D E，TRAUTWEIN S J. Hydraulic conductivity and waste contaminant transport in soil[M]. Philadelphia：American Society for Testing and Materials，1994：30-78.
[20]	SCHACKELFORD C D. Waste-soil interactions that alter hydraulic conductivity[J]. Symposium on Hydraulic Conductivity and Waste Contaminant Transport in Soil，1994，DOI：10.1520/STP23887S.
[21]	谈云志，孔令伟，郭爱国，等. 压实过程对红黏土的孔隙分布影响研究[J].岩土力学，2010，31(5)：1427-1430.(TAN Yunzhi，KONGLinwei，GUOAiguo，et al. Research on effect of compaction on pore size distribution of laterite soil[J]. Rock and Soil Mechanics，2010，31(5)：1427-1430.(in Chinese))
[1]	孔令伟，陈正汉.特殊土与边坡技术发展综述[J].土木工程学报，2012，45(5)：141-161.(KONG Lingwei，CHEN Zhenghan. Advancementin the techniques for special soils and slopes[J]. China Civil Engineering Journal，2012，45(5)：141-161.(in Chinese))
[2]	RODHE H，GREENFELT P，WISNIEWSKI J，etal. Acid reign¢95 conference summary statement[J]. Water Air Soil Pollt，1995，85(1)：1-14.
[3]	汪雅各.模拟酸雨对土壤金属离子的淋溶和植物有效性的影响[J].环境科学，1988，9(2)：22-26.(WANG Yage.Simulated acid rain leaching on metal of soil ions and affect the effectiveness of the plant[J]. Environmental Science，1988，9(2)：22-26.(in Chinese))
[4]	朱寿增.柳州市酸雨对土体物理力学性质的影响[J].桂林工学院学报，1996，16(2)：143-149.(ZHU Shouzeng. A discussion about the effect of acid rain on soil mass physical and mechanical nature in Liuzhou city[J]. Journal of Guilin University of Technology，1996，16(2)：143-149.(in Chinese))
[5]	孙重初.酸液对红黏土物理力学性质的影响[J].岩土工程学报，1989，11(4)：89-93.(SUN Zhongchu. Impact of acid on the physical and mechanical properties of red clay[J]. Journal of geotechnical engineering，1989，11(4)：89-93.(in Chinese))
[6]	伯桐震，黄英，石崇喜，等.酸污染红土物理性质的变化特征[J].水文地质工程地质，2012，(2)：111-115.(BO Tongzhen，HUANG Ying，SHI Chongxi，et al. Variation characteristics of physical properties of Acid pollution laterite[J].Hydrogeology and Engineering Geology，2012，(2)：111-115.(in Chinese))
[7]	COLEMAN J D，FARRAR D M. The moisture characteristics composition and structural analysis of a red clay soilfrom Nyeri，Kenya[J].Geotechnique，1964，13(4)：262-276.
[8]	BROOKS R H，COREY A T. Hydraulic properties of porous media[M]. Colorado：Fort Collins，1964：132-144.
[9]	孔令伟，罗鸿禧. 游离氧化铁形态转化对红黏土工程性质的影响[J]. 岩土力学，1991，14(4)：25-39.(KONG Lingwei，LUO Hongxi. Effect of the conversion in form of free Iron Oxide on the engineering property of the red clay[J]. Rock and Soil Mechanics，1991，14(4)：25-39.(in Chinese))
[10]	孔令伟，罗鸿禧，袁建新. 红黏土有效胶结特征的初步研究[J]. 岩土工程学报，1995，17(5)：42-47.(KONG Lingwei，LUO Hongxi，YUAN Jianxin. Preliminary study on the effective cementation characteristics of the red clay[J]. Chinese Journal of Geotechnical Engineering，1995，17(5)：42-47.(in Chinese))
[11]	孔令伟，郭爱国，吕海波. 典型红黏土的基本特征与微观结构特征[J].岩石力学与工程学报，2001，20(1)：973-977.(KONG Lingwei，GUO Aiguo，LUHaibo. The basic and microstructure characteristics of the typical laterite soil[J].Chinese Journal of Rock Mechanics and Engineering，2001，20(1)：973-977.(in Chinese))
[12]	程昌炳，康哲良，徐昌伟. 针铁矿与高岭土胶结本质的微观研究初探[J]. 岩土力学，1992，13(2/3)：122-127.(CHENG Changbing，KANG Zheliang，XU Changwei. Study on chemical kinetics of reaction between goethite and chlorhydric acid[J]. Rock and Soil Mechanics，1992，13(2/3)：122-127.(in Chinese))
[13]	程昌炳，徐昌伟，孔令伟，等. 天然针铁矿胶结土与盐酸反应的化学动力学及其力学特性预报[J].岩土工程学报，1995，17(3)：44-50.(CHENG Changbing，XU Changwei，KONG Lingwei，etal. Chemical kinetics for reaction of the clay samples cemented by nature goethite with ohlorhydric acid and the prediction of their mechanical propertics[J]. Chinese Journal of Geotechnical Engineering，1995，17(3)：44-50.(in Chinese))
[14]	黄运湘，廖柏寒，王志坤.模拟酸雨对森林红壤中铝的溶出及不同土层酸度变化的影响[J].生态环境，2005，14(4)：478-482.(HUANG Yunxiang，LIAO Bohan，WANG Zhikun. Effects of simulated acid rains on Al release and acidity changes in different horizons in forest red soils[J]. Ecology and Environment，2005，14(4)：478-482.(in Chinese))
[15]	廖柏寒，曾敏，郭朝晖，等.模拟酸雨下自然红壤与污染红壤中Cd，Cu，Zn的释放特征[J].环境化学，2009，28(3)：343-349.(LIAO Bohan，ZENG Min，GUO Zhaohui，et al. Release characteristics of Cd，Cu and Zn from the natural and contam inated red soils under simulated acid rain[J].Environmental Chemistry，2009，28(3)：343-349.(in Chinese))
[16]	钟汉珍，袁泉. 长江流域酸雨危害及对策分析[J]. 华中农业大学学报：社会科学版，2002，(3)：18-21.(ZHONGHanzhen，YUAN Quan.Acid rain damage and countermeasureson the Yangtze River basin[J].Huazhong Agricultural University：Social Sciences，2002，(3)：18-21.(in Chinese))
[17]	吴丹，王式功，尚可政. 中国酸雨研究综述[J]. 干旱气象，2006，24(2)：70-77.(WU Dan，WANGShiwu，SHANG Kezheng. Progress in research of acid rain in China[J]. Arid Mereorology，2006，24(2)：70-77.(in Chinese))
[18]	肖桂元，虞梦泽，陈学军，等. 非饱和土体淋溶及渗流场模拟装置[P]. 中国：ZL201220361560.7，2013-01-23.(XIAO Guiyuan，YU Mengze，CHENXuejun，etal.Simulator of unsaturated soil leaching and percolation field[P].China：ZL201220361560.7，2013-01-23.(in Chinese))
[19]	DANIEL D E，TRAUTWEIN S J. Hydraulic conductivity and waste contaminant transport in soil[M]. Philadelphia：American Society for Testing and Materials，1994：30-78.
[20]	SCHACKELFORD C D. Waste-soil interactions that alter hydraulic conductivity[J]. Symposium on Hydraulic Conductivity and Waste Contaminant Transport in Soil，1994，DOI：10.1520/STP23887S.
[21]	谈云志，孔令伟，郭爱国，等. 压实过程对红黏土的孔隙分布影响研究[J].岩土力学，2010，31(5)：1427-1430.(TAN Yunzhi，KONGLinwei，GUOAiguo，et al. Research on effect of compaction on pore size distribution of laterite soil[J]. Rock and Soil Mechanics，2010，31(5)：1427-1430.(in Chinese))