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The bibliographic record is provided by 李玉珉老師.
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莫高窟壁畫地仗土的土水特性研究=The Soil-Water Characteristics of Base Coat in Mogao Grottoes Murals |
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| Author |
趙天宇
;
張虎元
;
嚴耿生
;
劉平
;
張永霞
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| Source |
敦煌研究=Dunhuang Research
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| Volume | n.6 (總號=n.130) |
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| Date | 2011.12 |
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| Pages | 36 - 42 |
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| Publisher | 敦煌研究編輯部 |
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| Publisher Url |
http://www.dha.ac.cn/
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| Location | 蘭州, 中國 [Lanzhou, China] |
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| Content type | 期刊論文=Journal Article |
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| Language | 中文=Chinese |
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| Keyword | 澄板土; 含水量; 土水特征曲線; 非飽和導水率 |
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| Abstract | 水分運動引起的鹽分遷移、富集及土水相互作用引起的土體應力變化已成為壁畫病害發生的重要原因,本文通過室內試驗開展地仗土的土水特性研究,期望能為壁畫病害防治提供理論支持。利用壓力膜儀實測莫高窟壁畫地仗制作材料——澄板土的土水特征曲線,分析了澄板土基質吸力隨含水量的變化趨勢,研究了澄板土的土水特征曲線形態及描述模型。利用柔性壁滲透儀實測澄板土的飽和導水率,采用Van Genuchten(1980)預測模型計算得到不同含水量條件下澄板土的非飽和導水率,建立了非飽和導水率與含水量、基質吸力的相關關系,結果表明澄板土的非飽和導水率隨含水量減小呈非線性降低,高吸力段(100—100000kPa)在雙對數坐標中隨基質吸力增加以某一特定速率線性下降。
There are two important causes of mural deterioration.One is the salt migration and enrichment caused by water movement,and the other is the soil stress change caused by soil-water interaction.Both are related to the soil-water characteristics.This paper describes the research on the soil-water characteristics of the soil in mural plaster by laboratory tests,intending to provide theoretical guidance for mural conservation.By using pressure plate extractors,the soil-water characteristic curve(SWCC) of washed soil(dengbantu),which is the plaster material in the Mogao Grottoes murals,was measured.The relationship between matrix suction and water content was analyzed,and the curve morphology and model for SWCC of washed soil were also studied.The saturated hydraulic conductivity of washed soil was tested by flexible-wall permeameter,and then the unsaturated hydraulic conductivity in different water content was calculated through the Van Genuchten(1980) prediction model.Based on the measurement and calculation,the correlation between unsaturated hydraulic conductivity and water content(matrix suction) was established.Research results show that the unsaturated hydraulic conductivity of washed soil decreases non-linearly as the water content decreases,while at a high-suction section(100-100000kPa) it has a linear decline at a certain specific rate as the matrix suction increases in double logarithmic coordinates. |
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| ISSN | 10004106 (P) |
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| Categories | 石窟; 繪畫; 文物維護 |
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| Dynasty | 中國-無 |
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| Regions | 甘肅(敦煌) |
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| Hits | 311 |
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| Created date | 2016.05.12 |
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| Modified date | 2018.05.10 |
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