酸性环境对红土的侵蚀与危害  

EROSION AND HARM OF THE ACIDIC ENVIRONMENT ON LATERITE

作　　者：周新伟[1] 杨华舒[1] 李东[1] 

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093

出　　处：《地质灾害与环境保护》2016年第2期69-72,共4页Journal of Geological Hazards and Environment Preservation

基　　金：国家自然科学基金项目(41462013;50869003;51069003)

摘　　要：自然环境和工业过程产生的酸性物质与红土中的氧化物发生反应,将导致红土工程的特性发生变化。基于红土破坏的化学分析,采用加速寿命试验,检测红土中氧化物变化对工程特性的影响。利用变异系数的灰色关联分析方法,探究氯离子为代表的酸性物质对红土的侵蚀,定量计算在酸性环境中,不同氧化物对红土工程指标的贡献率,从而获知成分变化对工程指标的影响。讨论了酸性环境对红土的侵蚀机理,为红土工程的发展趋势和劣化评估提供了新的分析思路,并为治理措施的选择提供了针对性较强的量化依据。The natural environment and industrial production of acidic substance and the amphoteric oxide laterite react,leading to changes of engineering properties of laterite.Based on chemical analysis and testing principles of laterite destruction,by using accelerated life test,detecting the impact of the oxide change in laterite on changes of the engineering properties.Adopting grey relational analysis of variation coefficient method,analysis of chlorine ion as a representative of the acidic environment to the laterite erosion,quantitative analysis the contribution rate of different oxides in the acid environment to the laterite indices,so as to know the influence of chemical composition＇s changes to laterite project characteristics.Through the analysis of acidic environment to the mechanism of laterite＇s erosion and deteriorate,providing a new analysis ideas for the evaluation and development trend of the laterite engineering deterioration,and for the theoretical basis for engineering measures.

关 键 词：岩土工程 红土 酸性侵蚀 变异系数 灰色关联 

分 类 号：TU41[建筑科学—岩土工程] TU472.5[建筑科学—土工工程]