淋溶作用下黏土矿物对土体抗剪强度影响研究
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摘要
在降雨或人工灌溉等环境的影响下,由于水的淋溶作用,土体中矿物成分发生变化,导致土体中黏土矿物的工程特性随之改变。基于土体淋溶破坏,分析了淋溶环境对土体的破坏机理,根据模拟试验,验证土体中矿物成分变化对工程特性的影响。采用多元线性回归分析方法,探究土体中各种化学成分的变化对土体抗剪强度的影响,定量计算化学成分的变化与土体抗剪强度的关系。为降雨或灌溉条件下土体抗剪强度发展变化提供新的分析思路,并为滑坡等地质灾害的预测和治理提供量化依据。
Under the influence of rainfall or artificial irrigation,the mineral composition of soil changes due to water leaching,which leads to the change of engineering properties of clay minerals in soil.Based on the soil leaching damage,the failure mechanism of the leaching environment on the soil is analyzed.According to the simulation test,the influence of mineral composition changes on the engineering characteristics of the soil is verified.By using multiple linear regression analysis method,the influence of the change of chemical composition on the shear strength of soil was studied,and the relationship between the change of chemical composition and the shear strength of soil was quantitatively calculated.It provides a new analysis method for the development and change of soil shear strength under rainfall or irrigation conditions,and provides a quantitative basis for the prediction and treatment of geological hazards such as landslides.
Under the influence of rainfall or artificial irrigation,the mineral composition of soil changes due to water leaching,which leads to the change of engineering properties of clay minerals in soil.Based on the soil leaching damage,the failure mechanism of the leaching environment on the soil is analyzed.According to the simulation test,the influence of mineral composition changes on the engineering characteristics of the soil is verified.By using multiple linear regression analysis method,the influence of the change of chemical composition on the shear strength of soil was studied,and the relationship between the change of chemical composition and the shear strength of soil was quantitatively calculated.It provides a new analysis method for the development and change of soil shear strength under rainfall or irrigation conditions,and provides a quantitative basis for the prediction and treatment of geological hazards such as landslides.
引文
[1]杨华舒,杨宇璐,闫毅志,等.碱性固化材料对红土地基的化学侵蚀[J].建筑材料学报,2013,16(1):159-163.
[2]周新伟,杨华舒,李东.酸性环境对红土的侵蚀与危害[J].地质灾害与环境保护,2016,27(2):69-72.
[3]赵宇,崔鹏,胡良博.黏土抗剪强度演化与酸雨引发滑坡的关系———以三峡库区滑坡为例[J].岩石力学与工程学报,2009,28(3):576-582.
[4]董英,贾俊,张茂省,等.甘肃永靖黑方台地区灌溉诱发作用与黄土滑坡响应[J].地质通报,2013,32(6):893-898.
[5]王家鼎,惠泱河.黄土地区灌溉水诱发滑坡群的研究[J].地理科学,2002,22(3):305-310.
[6]张秦华,张华勋,张志沛.泾阳县泾河南塬黄土滑坡形成机理分析[J].地质灾害与环境保护,2018,29(01):3-8.
[7]汤文,姚志宾,李邵军,等.水化学作用对滑坡滑带土的物理力学特性影响试验研究[J].岩土力学,2016,37(10):2885-2892.
[8]王军,曹平,赵延林,等.水土化学作用对土体抗剪强度的影响[J].中南大学学报(自然科学版),2014,41(1):245-250.
[9] Mesri,G.and Olson,R.E.Shear strength of montmorillonite[J].Geotechnique,1970,20(3):261-270.
[10]Tiwari,B.Tuladhar,G.R.Marui.Variation in residual shear strength of the soil with the salinity of pore luid[J].Journal of Geo-environmental Engineering.2005,131(12):1445-1456.
[11]周训华,廖义玲.红粘土颗粒之间结构连结的胶体化学特征[J].贵州工业大学学报,2004,33(1):26-29.
[12]何蕾.矿物成分与水化学成分对粘性土抗剪强度的控制规律及其应用[D].中国地质大学(北京),2014.
[13]王黎明,陈颖,杨楠.应用回归分析[M].上海:复旦大学出版社,2008.
[2]周新伟,杨华舒,李东.酸性环境对红土的侵蚀与危害[J].地质灾害与环境保护,2016,27(2):69-72.
[3]赵宇,崔鹏,胡良博.黏土抗剪强度演化与酸雨引发滑坡的关系———以三峡库区滑坡为例[J].岩石力学与工程学报,2009,28(3):576-582.
[4]董英,贾俊,张茂省,等.甘肃永靖黑方台地区灌溉诱发作用与黄土滑坡响应[J].地质通报,2013,32(6):893-898.
[5]王家鼎,惠泱河.黄土地区灌溉水诱发滑坡群的研究[J].地理科学,2002,22(3):305-310.
[6]张秦华,张华勋,张志沛.泾阳县泾河南塬黄土滑坡形成机理分析[J].地质灾害与环境保护,2018,29(01):3-8.
[7]汤文,姚志宾,李邵军,等.水化学作用对滑坡滑带土的物理力学特性影响试验研究[J].岩土力学,2016,37(10):2885-2892.
[8]王军,曹平,赵延林,等.水土化学作用对土体抗剪强度的影响[J].中南大学学报(自然科学版),2014,41(1):245-250.
[9] Mesri,G.and Olson,R.E.Shear strength of montmorillonite[J].Geotechnique,1970,20(3):261-270.
[10]Tiwari,B.Tuladhar,G.R.Marui.Variation in residual shear strength of the soil with the salinity of pore luid[J].Journal of Geo-environmental Engineering.2005,131(12):1445-1456.
[11]周训华,廖义玲.红粘土颗粒之间结构连结的胶体化学特征[J].贵州工业大学学报,2004,33(1):26-29.
[12]何蕾.矿物成分与水化学成分对粘性土抗剪强度的控制规律及其应用[D].中国地质大学(北京),2014.
[13]王黎明,陈颖,杨楠.应用回归分析[M].上海:复旦大学出版社,2008.
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