Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.2172/138337 |
| 报告编号 | LBL--29700 |
| 来源ID | OSTI_ID: 138337 |
| Sorptivity of rocks and soils of the van Genuchten-Mualem type | |
| Zimmerman, R.W.; Bodvarsson, G.S. [Lawrence Berkeley Lab., CA (United States)] | |
| 英文摘要 | One hydrological process that will have great relevance to the performance of the proposed underground radioactive waste repository at Yucca Mountain, Nevada, is that of the absorption of water from a water-filled fracture into the adjacent unsaturated rock formation. The rate at which water is imbibed by a rock depends on the hydrological properties of the rock and on the initial saturation (or initial capillary suction) of the formation. The hydrological properties that affect imbibition are the relative permeability function and the capillary pressure function. These functions are often collectively referred to as the `characteristic functions` of the porous medium. For one-dimensional absorption, it can be shown that, regardless of the details of the characteristic functions, the total amount of water imbibed by the formation, per unit surface area, will be proportional to the square root of the elapsed time. Hence the ability of a rock or soil to imbibe water can be quantified by a parameter known as the sorptivity S, which is defined such that the cumulative volumetric liquid influx per unit area is given by Q = S{radical}t. The paper discusses the simplification of these characteristic functions of porous medium. |
| 出版年 | 1991 |
| 报告类型 | Technical Report |
| 语种 | 英语 |
| 国家 | 美国 |
| 来源学科分类 | 05 NUCLEAR FUELS ; 54 ENVIRONMENTAL SCIENCES ; 58 GEOSCIENCES ; RESERVOIR ROCK ; SORPTIVE PROPERTIES ; YUCCA MOUNTAIN ; SITE CHARACTERIZATION ; CAPILLARY FLOW ; DIFFUSION ; EQUATIONS ; HYDROLOGY ; PERMEABILITY ; POROUS MATERIALS ; PROGRESS REPORT ; RADIOACTIVE WASTE FACILITIES ; SORPTION ; TUFF ; WATER ; WATER SATURATION ; Yucca Mountain Project |
| URL | http://www.osti.gov/scitech/servlets/purl/138337 |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/264459 |
| 推荐引用方式 GB/T 7714 | Zimmerman, R.W.,Bodvarsson, G.S. [Lawrence Berkeley Lab., CA . Sorptivity of rocks and soils of the van Genuchten-Mualem type,1991. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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