Application and evaluation of soil suction and moisture equipment for unsaturated soils

非饱和土吸土保湿设备的应用与评价

• 批准号: 331161-2006
• 负责人: Fredlund, Delwyn
• 金额: $ 1.49万
• 依托单位: University of Saskatchewan
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2006
• 资助国家: 加拿大
• 起止时间: 2006-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=325675
• 关键词: Application; evaluation; soil; suction; moisture

Soils in semi-arid regions such as Saskatchewan and near surface soils generally are unsaturated.  There is a great need for reliable and rapid measurement of water content and negative pore-water pressure in soils which is referred to as matric suction.  The measurement of matric suction can be used to: predict/monitor the stability of slopes; improve the design, performance and maintenance of highways subgrates; predict/monitor moisture movements through waste dumps, landfills and other contaminated sites, into the regional groundwater; and to design/monitor soil covers.  The annual costs associated with such problems in geotechnical, geo-environmental, and highway engineering, are estimated to be in the multi-million dollar range.   University of Saskatchewan has been a leader in research and development of matric suction measuring devices.  Given the public demand for stringent safety and environmental regulations, the need to reliably monitor slopes and industrial sites for contaminants has become urgent.    The proposal is to evaluate and use two new pieces of equipment in the areas of geotechnical and geo-environmental engineering.  The equipment is WP4-T Dew Point PotentiaMeter that measures suction rapidly and 6 ThetaProbes that measure water content in the field..  ThetaProbes will be installed in the field.  This equipment will be used for in both geotechnical and geo-environmental engineering research as and in particular in the study of unsaturated soil behaviour at low water contents and high suctions.   Graduate and undergraduate students and a research engineer will be trained in the use of this equipment.  Unsaturated soil mechanics is a relatively new area of study and the training will enhance the ability of our engineers to complete in a global market and promote innovations and research findings of Canada.

半干旱的土壤（例如萨斯喀彻温省）和表面土壤通常是不饱和的。或者通过废物垃圾场，垃圾填埋场和其他受污染的地点的运动来设计/监视土壤萨斯喀彻温省是Rearch的读者和矩阵的开发，鉴于公众对脱节和环境法规的需求是紧急的。设备。水分的行为和较高的苏化。全球市场并促进加拿大的创新和研究结果。