干旱区生态环境知识资源中心(Arid): Moisture content analysis of covered uranium mill tailings

Arid

DOI	10.2172/5257898
报告编号	UMT-0207; PNL-4132
来源ID	OSTI_ID: 5257898
	Moisture content analysis of covered uranium mill tailings
	Mayer, D.W.; Beedlow, P.A.; Cadwell, L.L.
英文摘要	The use of vegetation and rock covers to stabilize uranium mill tailings cover systems is being investigated by Pacific Northwest Laboratory. A modeling study of moisture movement through the tailings and cover layers was initiated to determine the effect of the stabilizing techniques. The cover system was simulated under climatic conditions occurring at Grand Junction, Colorado. The cover consisted of a layer of wet clay/gravel mix followed by a capillary barrier of washed rock and a surface layer of fill soil. Vegetation and rock were used to stabilize the surface layer. The simulation yielded moisture content and moisture storage values for the tailings and cover system along with information about moisture losses due to evaporation, transpiration, and drainage. The study demonstrates that different surface stabilization treatments lead to different degrees of moisture retention in the covered tailings pile. The evapotranspiration from vegetation can result in a relatively stable moisture content. Rock covers, however, may cause drainage to occur because they reduce evaporation and lead to a subsequent increase in moisture content. It is important to consider these effects when designing a surface stabilization treatment. Drainage may contribute to a groundwater pollution problem. A surface treatment that allows the cover system to dry out can increase the risk of atmospheric contamination through elevated radon emission rates.
出版年	1981
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES ; COVERINGS ; COMPARATIVE EVALUATIONS ; FEED MATERIALS PLANTS ; MILL TAILINGS ; CLAYS ; EXPERIMENTAL DATA ; GROUND COVER ; MOISTURE ; PLANTS ; ROCKS ; SOILS ; STABILIZATION ; URANIUM ORES ; DATA ; INDUSTRIAL PLANTS ; INFORMATION ; NUCLEAR FACILITIES ; NUMERICAL DATA ; ORES ; SOLID WASTES ; TAILINGS ; WASTES 052001* -- Nuclear Fuels-- Waste Processing
URL	http://www.osti.gov/scitech/servlets/purl/5257898
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/263186
推荐引用方式 GB/T 7714	Mayer, D.W.,Beedlow, P.A.,Cadwell, L.L.. Moisture content analysis of covered uranium mill tailings,1981.