A wide range of terrain features and landforms,which are exemplified by intricate geological formations and diverse rock compositions,are found in the western mountainous regions of China.These areas frequently encoun...A wide range of terrain features and landforms,which are exemplified by intricate geological formations and diverse rock compositions,are found in the western mountainous regions of China.These areas frequently encounter geological disasters.As one of the natural disasters,landslides lead to considerable loss of human life and property.Considering mitigation of the losses caused by landslide disasters,a necessary measure for disaster prevention and mitigation involves conducting detailed investigations and monitoring of landslides,which is also the cornerstone of landslide warning.This study compares and analyzes the feasibility of the magnetotelluric detection method for landslides using the results of engineering geological surveys and landslide monitoring.The study aims to address the scientific problem of the validity of using magnetotelluric methods to detect landslide development processes.The Tangjiawan landslide signal on the left side of the K94+000~K94+145 section of the Wenma Expressway is analyzed by employing engineering geological survey,magnetotelluric detection,landslide monitoring,landslide analysis,and other methods.Analysis results provide the static electrical characteristics of lithology,structure,and groundwater,as well as the dynamic electrical characteristics of landslide development.This study focuses on analyzing the relationship between the methods of magnetotelluric detection and engineering geological surveys and the results of landslide monitoring.The workflow and methods for data collection,processing,inversion,interpretation,and analysis using the magnetotelluric method to detect the dynamic development process of landslides are presented in the conclusion.Preliminary conclusions indicate a strong correlation between the dynamic changes in magnetotelluric wave impedance with the surface displacement of landslides and the dynamic changes in groundwater.The use of the magnetotelluric method for landslide detection and monitoring is a feasible example.The research results can offer certain technical references for the detection and monitoring of landslides using magnetotelluric methods and also provide references and guidance for the selection of diversified landslide monitoring methods in the future.展开更多
对2022年OEKO-TEX协会发布最新版标准的变化进行详细解读。分别对STANDARD 100 by OEKO-TEX、LEATHER STANDARD by OEKO-TEX、STeP by OEKO-TEX、MADE IN GREEN by OEKO-TEX、ECO PASSPORT by OEKO-TEX五大体系新增与变更内容进行分析...对2022年OEKO-TEX协会发布最新版标准的变化进行详细解读。分别对STANDARD 100 by OEKO-TEX、LEATHER STANDARD by OEKO-TEX、STeP by OEKO-TEX、MADE IN GREEN by OEKO-TEX、ECO PASSPORT by OEKO-TEX五大体系新增与变更内容进行分析、总结。分别对新增限量物质和受监控物质的基本信息、限量要求、监控原因、化学危险性及主要用途进行说明。对新标准的变更内容进行补充说明,方便使用者更深入理解标准内容。展开更多
对2019年STANDARD 100 by OEKO-TEX及LEATHER STANDARD by OEKO-TEX进行了详细解读。列出了新增测试项目,含钡、硒无机颜料,含钡有机颜料色淀和酸性络合染料;作为柔软剂的各种聚硅氧烷游离硅氧烷的安全性,特别是与REACH法规注册有关豁...对2019年STANDARD 100 by OEKO-TEX及LEATHER STANDARD by OEKO-TEX进行了详细解读。列出了新增测试项目,含钡、硒无机颜料,含钡有机颜料色淀和酸性络合染料;作为柔软剂的各种聚硅氧烷游离硅氧烷的安全性,特别是与REACH法规注册有关豁免化学品和授权有关的SVHC事项相悖;纺织品中的甲醛限量更加严格,以低甲醛醚化2D树脂为例,皮革以合成鞣革剂为例,牛仔服装着色剂以靛蓝为例。笔者认为3个月过渡期肯定不够,因为2019版新检测标准中众多有害化学品尚无国际标准检测方法,如何执行也是一个问题,这种状态是欧洲先立法的惯例使然。展开更多
基金supported by the Construction S&T Project of Department of Transportation of Sichuan Province(Grant No.2023A02,No.2024A04,No.2020A01)the Sichuan Science and Technology Program(Grant No.2022YFG0141)+3 种基金the Research Project of Sichuan Highway Planning,Survey,Design,and Research Institute Ltd.(Grant No.KYXM2021000049,No.KYXM2022000038,No.KYXM2023000056)the National Natural Science Foundation of China(41630640)the National Science Foundation of Innovation Research Group(41521002)the National Natural Science Foundation of China(41790445).
文摘A wide range of terrain features and landforms,which are exemplified by intricate geological formations and diverse rock compositions,are found in the western mountainous regions of China.These areas frequently encounter geological disasters.As one of the natural disasters,landslides lead to considerable loss of human life and property.Considering mitigation of the losses caused by landslide disasters,a necessary measure for disaster prevention and mitigation involves conducting detailed investigations and monitoring of landslides,which is also the cornerstone of landslide warning.This study compares and analyzes the feasibility of the magnetotelluric detection method for landslides using the results of engineering geological surveys and landslide monitoring.The study aims to address the scientific problem of the validity of using magnetotelluric methods to detect landslide development processes.The Tangjiawan landslide signal on the left side of the K94+000~K94+145 section of the Wenma Expressway is analyzed by employing engineering geological survey,magnetotelluric detection,landslide monitoring,landslide analysis,and other methods.Analysis results provide the static electrical characteristics of lithology,structure,and groundwater,as well as the dynamic electrical characteristics of landslide development.This study focuses on analyzing the relationship between the methods of magnetotelluric detection and engineering geological surveys and the results of landslide monitoring.The workflow and methods for data collection,processing,inversion,interpretation,and analysis using the magnetotelluric method to detect the dynamic development process of landslides are presented in the conclusion.Preliminary conclusions indicate a strong correlation between the dynamic changes in magnetotelluric wave impedance with the surface displacement of landslides and the dynamic changes in groundwater.The use of the magnetotelluric method for landslide detection and monitoring is a feasible example.The research results can offer certain technical references for the detection and monitoring of landslides using magnetotelluric methods and also provide references and guidance for the selection of diversified landslide monitoring methods in the future.
文摘对2022年OEKO-TEX协会发布最新版标准的变化进行详细解读。分别对STANDARD 100 by OEKO-TEX、LEATHER STANDARD by OEKO-TEX、STeP by OEKO-TEX、MADE IN GREEN by OEKO-TEX、ECO PASSPORT by OEKO-TEX五大体系新增与变更内容进行分析、总结。分别对新增限量物质和受监控物质的基本信息、限量要求、监控原因、化学危险性及主要用途进行说明。对新标准的变更内容进行补充说明,方便使用者更深入理解标准内容。
文摘对2019年STANDARD 100 by OEKO-TEX及LEATHER STANDARD by OEKO-TEX进行了详细解读。列出了新增测试项目,含钡、硒无机颜料,含钡有机颜料色淀和酸性络合染料;作为柔软剂的各种聚硅氧烷游离硅氧烷的安全性,特别是与REACH法规注册有关豁免化学品和授权有关的SVHC事项相悖;纺织品中的甲醛限量更加严格,以低甲醛醚化2D树脂为例,皮革以合成鞣革剂为例,牛仔服装着色剂以靛蓝为例。笔者认为3个月过渡期肯定不够,因为2019版新检测标准中众多有害化学品尚无国际标准检测方法,如何执行也是一个问题,这种状态是欧洲先立法的惯例使然。
