砒砂岩与沙中矿物粒度分布特征的多尺度微观结构分析
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摘要
在以往研究中,由于测试技术缺失,对砒砂岩与沙中矿物的粒度考虑不足,对砒砂岩与风积沙中不同矿物粒度的复配缺少研究。本文结合扫描电镜,采用多尺度微观结构分析技术,以砒砂岩、内蒙古亚玛雷克沙漠沙、神木沙为样品,将砒砂岩与两种沙分别按质量比为1∶0、1∶1、1∶2、1∶5和0∶1复配,测定并对比了砒砂岩和沙的全样粒度及砒砂岩与两种沙中不同矿物的粒度分布特征。结果表明:砒砂岩和沙中主要的矿物有石英、硅酸盐矿物和碳酸盐矿物,按面积百分比计算,砒砂岩中石英占68.83%,硅酸盐矿物占16.28%,碳酸盐矿物占14.89%,内蒙沙中石英占49.36%,硅酸盐矿物占48.42%,碳酸盐矿物占2.21%,神木沙中石英占38.74%,硅酸盐矿物占59.5%,碳酸盐矿物占1.76%。不同比例砒砂岩与两种风积沙复配土中,砒砂岩中碳酸盐矿物粒度对复配土的影响较大;内蒙沙与砒砂岩复配土中,随着砒砂岩中矿物粒径的缺失,>0.1mm部分风积沙中石英、硅酸盐矿物对粒径变化起主要作用;神木沙与砒砂岩复配土中,曲线在0.03、0.05、0.1mm都出现了转折点,<0.05mm部分,砒砂岩中碳酸盐矿物对粒径的变化影响较大。综上,多尺度微观结构分析技术可以快速得到砒砂岩与沙中不同矿物形态与粒度分布特征,从矿物复配角度对砒砂岩与沙复配成土技术提供了一个新思路。
In the previous research,the grain size in the sand compound did not draw enough attention and research on the compound between different minerals in feldspathic sandstone and sand was not studied due to lack of test technology.In this paper,combined with scanning electron microscopy and multi-scale microstructure analysis technology,the feldspathic sandstone,aeolian sand in Inner Mongolia and Shenmusha are sampled and mixed according to mass ratios of mf∶ms=1∶0,1∶1,1∶2,1∶5 and 0∶1 with the purpose to determine and analyze the morphology and particle size distribution characteristics of main minerals.The results show that the main minerals in the feldspathic sandstone and sand are quartz,silicate mineralsand carbonate minerals.According to the area percentage,the content of the three minerals in the soft rock is 68.83%,16.28% and 14.89% respectively.The content of three minerals in Inner Mongolia sand is 49.36%,48.42% and 2.21%,38.74%,59.5% and 1.76%in Shenmu sand.Among different proportions of compounding soils,the carbonate mineral size in the soft rock has agreat influence on the compound soil.In the compound soil of the Inner Mongolian sand and the feldspathic sandstone,as the mineral grain size in the soft rock is missing,quartz greater than0.1 mm and silicate minerals play a major role in particle size change;Shenmu sand and soft rock compound soil,there are twists at 0.03 mm,0.05 mm,0.1 mm in the curve.Among <0.05 mm,the carbonate minerals in the soft rock have a great influence on the particle size change.Therefore,the multi-scale microstructure analysis technology can quickly obtain the mineral morphology and grain size distribution characteristics of the feldspathic sandstone and sand and provides a new idea from the mineral point of view for the technical principle of feldspathic sandstone and sand compounding.
In the previous research,the grain size in the sand compound did not draw enough attention and research on the compound between different minerals in feldspathic sandstone and sand was not studied due to lack of test technology.In this paper,combined with scanning electron microscopy and multi-scale microstructure analysis technology,the feldspathic sandstone,aeolian sand in Inner Mongolia and Shenmusha are sampled and mixed according to mass ratios of mf∶ms=1∶0,1∶1,1∶2,1∶5 and 0∶1 with the purpose to determine and analyze the morphology and particle size distribution characteristics of main minerals.The results show that the main minerals in the feldspathic sandstone and sand are quartz,silicate mineralsand carbonate minerals.According to the area percentage,the content of the three minerals in the soft rock is 68.83%,16.28% and 14.89% respectively.The content of three minerals in Inner Mongolia sand is 49.36%,48.42% and 2.21%,38.74%,59.5% and 1.76%in Shenmu sand.Among different proportions of compounding soils,the carbonate mineral size in the soft rock has agreat influence on the compound soil.In the compound soil of the Inner Mongolian sand and the feldspathic sandstone,as the mineral grain size in the soft rock is missing,quartz greater than0.1 mm and silicate minerals play a major role in particle size change;Shenmu sand and soft rock compound soil,there are twists at 0.03 mm,0.05 mm,0.1 mm in the curve.Among <0.05 mm,the carbonate minerals in the soft rock have a great influence on the particle size change.Therefore,the multi-scale microstructure analysis technology can quickly obtain the mineral morphology and grain size distribution characteristics of the feldspathic sandstone and sand and provides a new idea from the mineral point of view for the technical principle of feldspathic sandstone and sand compounding.
引文
[1]魏雨露,张露.砒砂岩与沙复配成土的颗粒级配与压实特性研究[J].西部大开发:土地开发工程研究,2017,2(4):25-29.
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[9]Han Jichang,Xie Jiancang,Zhang Yang.Potential Role of Feldspathic Sandstone as a Natural Water Retaining Agent in Mu Us A Sandy Land Northweast China[J].Chinese Geographical Science,2012,22(5):550-555.
[10]Wang Ni,Xie Jiancang,Han Jichang.A Sand Control and Development Model in Sandy Land Based on Mixed Experiments of Arsenic Sandstone and Sand:A Case Study in Mu Us Sandy Land in China[J].Chinese Geographical Science,2013,23(6):700-707.
[11]Wang Ni,Xie Jicang,Han Jichang,et al.A comprehensive framework on land-water resources development in Mu Us Sandy Land[J].Land Use Policy,2014(40):69-73.
[12]韩霁昌,付佩,王欢元,等.砒砂岩与沙复配成土技术在毛乌素沙地土地整治工程中的推广应用[J].科学技术与工程,2013,13(25):7287-7293.
[13]童伟,韩霁昌,王欢元,等.毛乌素沙地砒砂岩与沙复配成土技术固沙效应[J].中国沙漠,2015,35(6):1467-1472.
[14]张卫华,韩霁昌,王欢元,等.砒砂岩对毛乌素沙地风成沙的改良应用研究[J].干旱区资源与环境,2015,29(10):122-127.
[15]韩霁昌,孙婴婴,张扬,等.复配型土体有机重构技术初探---以砒砂岩与沙复配成土为例[J].西部大开发:土地开发工程研究,2016(1):16-23.
[16]王欢元,童伟.基于粒度组成分析的砒砂岩与沙复配固沙机理探析[J].西部大开发:土地开发工程研究,2018,3(5):46-50.
[17]郭航,孙婴婴,王欢元.砒砂岩、沙的微观结构及与宏观性能“桥梁”的构建[J].西部大开发:土地开发工程研究,2018,3(01).
[18]杨硕.黄土状土跨尺度空间微观建模的建立与初步应用[D].西安:西安科技大学,2015.
[19]孙乐.洛川黄土微观结构与矿物组分分析研究[D].西安:西安科技大学,2016.
[2]李智佩,岳乐平,薛祥煦,等.毛乌素沙地沉积物粒度特征与土地沙漠化[J].吉林大学学报:地球科学版,2007(3):578-586.
[3]王愿昌,吴永红,寇权,等.砒砂岩分布范围界定与类型区划分[J].中国水土保持科学,2007,5(01):14-18.
[4]王欢元,韩霁昌,罗林涛,等.砒砂岩与沙复配成土过程中沙的调控作用[J].土壤通报,2014,45(02):286-290.
[5]王志,彭茹燕,王蕾,等.毛乌素沙地南缘改良与利用风沙土性质研究[J].水土保持学报,2006,20(2):14-16,21.
[6]赵国际.内蒙古砒砂岩地区水土流失规律研究[J].水土保持研究,2001,8(4):158-160.
[7]王愿昌,吴永红,闵德安,等.砒砂岩区水土流失治理措施调研[J].国际沙棘研究与开发,2007,5(1):39-44.
[8]赵国际.内蒙古砒砂岩地区水土流失规律研究[J].水土保持研究,2001,8(4):158-160.
[9]Han Jichang,Xie Jiancang,Zhang Yang.Potential Role of Feldspathic Sandstone as a Natural Water Retaining Agent in Mu Us A Sandy Land Northweast China[J].Chinese Geographical Science,2012,22(5):550-555.
[10]Wang Ni,Xie Jiancang,Han Jichang.A Sand Control and Development Model in Sandy Land Based on Mixed Experiments of Arsenic Sandstone and Sand:A Case Study in Mu Us Sandy Land in China[J].Chinese Geographical Science,2013,23(6):700-707.
[11]Wang Ni,Xie Jicang,Han Jichang,et al.A comprehensive framework on land-water resources development in Mu Us Sandy Land[J].Land Use Policy,2014(40):69-73.
[12]韩霁昌,付佩,王欢元,等.砒砂岩与沙复配成土技术在毛乌素沙地土地整治工程中的推广应用[J].科学技术与工程,2013,13(25):7287-7293.
[13]童伟,韩霁昌,王欢元,等.毛乌素沙地砒砂岩与沙复配成土技术固沙效应[J].中国沙漠,2015,35(6):1467-1472.
[14]张卫华,韩霁昌,王欢元,等.砒砂岩对毛乌素沙地风成沙的改良应用研究[J].干旱区资源与环境,2015,29(10):122-127.
[15]韩霁昌,孙婴婴,张扬,等.复配型土体有机重构技术初探---以砒砂岩与沙复配成土为例[J].西部大开发:土地开发工程研究,2016(1):16-23.
[16]王欢元,童伟.基于粒度组成分析的砒砂岩与沙复配固沙机理探析[J].西部大开发:土地开发工程研究,2018,3(5):46-50.
[17]郭航,孙婴婴,王欢元.砒砂岩、沙的微观结构及与宏观性能“桥梁”的构建[J].西部大开发:土地开发工程研究,2018,3(01).
[18]杨硕.黄土状土跨尺度空间微观建模的建立与初步应用[D].西安:西安科技大学,2015.
[19]孙乐.洛川黄土微观结构与矿物组分分析研究[D].西安:西安科技大学,2016.