Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.2172/882354 |
| 报告编号 | SAND2005-0480 |
| 来源ID | OSTI_ID: 882354 |
| Calculation set for design and optimization of vegetative soil covers Sandia National Laboratories, Albuquerque, New Mexico. | |
| Peace, Gerald L.; Goering, Timothy James (GRAM, Inc., Albuquerque, NM) | |
| 英文摘要 | This study demonstrates that containment of municipal and hazardous waste in arid and semiarid environments can be accomplished effectively without traditional, synthetic materials and complex, multi-layer systems. This research demonstrates that closure covers combining layers of natural soil, native plant species, and climatic conditions to form a sustainable, functioning ecosystem will meet the technical equivalency criteria prescribed by the U. S. Environmental Protection Agency. In this study, percolation through a natural analogue and an engineered cover is simulated using the one-dimensional, numerical code UNSAT-H. UNSAT-H is a Richards. equation-based model that simulates soil water infiltration, unsaturated flow, redistribution, evaporation, plant transpiration, and deep percolation. This study incorporates conservative, site-specific soil hydraulic and vegetation parameters. Historical meteorological data are used to simulate percolation through the natural analogue and an engineered cover, with and without vegetation. This study indicates that a 3-foot (ft) cover in arid and semiarid environments is the minimum design thickness necessary to meet the U. S. Environmental Protection Agency-prescribed technical equivalency criteria of 31.5 millimeters/year and 1 x 10{sup -7} centimeters/second for net annual percolation and average flux, respectively. Increasing cover thickness to 4 or 5 ft results in limited additional improvement in cover performance. |
| 出版年 | 2005 |
| 报告类型 | Technical Report |
| 语种 | 英语 |
| 国家 | 美国 |
| 来源学科分类 | 12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES ; 36 MATERIALS SCIENCE ; CLOSURES ; CONTAINMENT ; DESIGN ; ECOSYSTEMS ; ENVIRONMENTAL PROTECTION ; EVAPORATION ; HYDRAULICS ; NATURAL ANALOGUE ; OPTIMIZATION ; PLANTS ; SOILS ; SYNTHETIC MATERIALS ; THICKNESS ; TRANSPIRATION ; US EPA ; WASTES ; WATER INFLUX Environmental protection. ; Soil remediation. ; Environment ; New Mexico ; Sandia National Laboratories ; United States ; Environmental Protection Agency-Law and legislation |
| URL | http://www.osti.gov/scitech/servlets/purl/882354 |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/268896 |
| 推荐引用方式 GB/T 7714 | Peace, Gerald L.,Goering, Timothy James . Calculation set for design and optimization of vegetative soil covers Sandia National Laboratories, Albuquerque, New Mexico.,2005. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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