湿陷性黄土模型试验相似材料的研制

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摘要湿陷性黄土模型试验相似材料一直是地质力学模型试验相似材料研究的瓶颈，限制着湿陷性黄土地区模型试验的应用。采用空中自由下落法，通过大量配比试验，成功研制湿陷性黄土模型试验相似材料，该材料选用重晶石粉和砂作为无黏性材料，工业盐、石膏和膨润土作为黏结性材料，加水均匀拌合，润湿24 h后采用空中自由下落法制成试样，50 ℃恒温条件下烘干试样，模拟风成黄土的沉积方式和形成条件。通过湿陷试验，得到该相似材料具有和天然湿陷性黄土相似的湿陷特征，浸水产生强烈湿陷；通过直剪试验，得到该材料的强度参数也与天然黄土相似，而且可调节的容重范围广，是一种比较理想的湿陷性黄土模型试验相似材料。

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	张延杰1
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	王旭1
	梁庆国1
	蒋代军1
	马学宁1

关键词 ：土力学, 湿陷性黄土, 空中自由下落法, 模型试验, 相似材料

Abstract：The model test material of collapsible loess is the bottleneck of similar materials model research in geomechanics，which has limited the application of model tests in loess area. A model test material for collapsible loess is successfully developed after a lot of compounding tests by airfall method. This similar material is firstly mixed with barite powder and sand as non-cohesive material，and industrial salt，gypsum and bentonite as cohesive material. Then the material is mixed with water evenly. After wetted for 24 hours，the samples are produced by airfall method. At last，the samples are maintained at constant temperature of 50 ℃，which simulates the deposition mode and formation conditions of eolian loess，to obtain the targeted model test material. Odometer collapse test results show that this artificial material have similar collapsibility with natural loess；and also produce significant collapse when wetted. Shear test results indicate that shear strength parameters of the similar material are much close to natural loess. Since the density of the similar material can be adjusted widely，the model test material developed by the above method would be an ideal model test material for collapsible loess.

Key words： soil mechanics collapsible loess airfall method model test similar material

引用本文:

张延杰1，2，王旭1，梁庆国1，蒋代军1，马学宁1. 湿陷性黄土模型试验相似材料的研制[J]. 岩石力学与工程学报, 2013, 32(s2): 4019-4024.
ZHANG Yanjie1，2，WANG Xu1，LIANG Qingguo1，JIANG Daijun1，MA Xuening 1. DEVELOPMENT OF MODEL TEST SIMILAR MATERIAL OF COLLAPSIBLE LOESS. , 2013, 32(s2): 4019-4024.

链接本文:

https://rockmech.whrsm.ac.cn/CN/Y2013/V32/Is2/4019

[1]	陈兴华.脆性材料结构模型试验[M].北京：水利电力水电出版社，1984：1-4.(CHEN Xinhua. The structural model test ofbrittle materials[M]. Beijing：WaterResources andElectricPowerPress，1984：1-4.(inChinese))
[2]	罗先启，葛修润.滑坡模型试验理论及其应用[M].北京：中国水利水电出版社，2008：25-36.(LUO Xianqi，GE Xiurun. Theory and application of model test on landslide[M]. Beijing：China Water Power Press，2008：25-36.(inChinese))
[3]	韩伯鲤，陈霞龄，宋一乐，等.岩体相似材料的研究[J].武汉水利电力大学学报，1997，30(2)：6-9.(HANBoli，CHEN Xia1ing，SONG Yile，et al. Research onsimilar material of rockmass[J]. Journal of Wuhan University of Hydraulic and Electric Engineering，1997，30(2)：6-9.(in Chinese))
[4]	马芳平，李仲奎，罗光福.NIOS相似材料及其在地质力学相似模型试验中的应用[J].水力发电学报，2004，23(1)：48-51.(MA Fangping，LI Zhongkui，LUO Guangfu. NIOSmodel material and its application togeo-mechanical similarity model test[J]. Journal of HydroelectricEngineering，2004，23(1)：48-51.(in Chinese))
[5]	王汉鹏，李术才，张强勇，等.新型地质力学模型试验相似材料的研制[J].岩石力学与工程学报，2006，25(9)，1842-1847.(WANG Hanpeng，LI Shucai，ZHANG Qiangyong，et al. Development of a newsimilar materialfor geomechanicalmodel test[J].Chinese Journal of Rock Mechanics and Engineering，2006，25(9)，1842-1847.(in Chinese))
[6]	JIANG M J，SHEN Z J. Preparation of artificial structured collapsible loess and its behavior in odometer test[C]// Proceedings of the 2nd International Conference on Unsaturated Soils. Beijing：[s. n.]，1998：374-378.
[7]	骆亚生，谢定义，邵生俊，等.非饱和黄土的结构变化特性[J].西北农林科技大学学报，2004，32(8)：114-118.(LUO Yasheng，XIE Dingyi，SHAO Shengjun，et al. Variation characteristics of soil structure of unsaturated loess[J].JournalofNorthwest Sci-Tech Universityof Agriculture and Forest：NaturalScience，2004，32(8)：114-118.(inChinese))
[8]	钱鸿缙，王继堂，罗玉生，等.湿陷性黄土地基[M].北京：中国建筑工业出版社，1985：42-56.(QIAN Hongjing，WANG Jitang，LUO Yusheng，et al.Collapsed loess foundation[M]. Beijing：China Architectureand Building Press，1985：42-56.(inChinese))
[9]	高国瑞.黄土显微结构分类与湿陷性[J].中国科学，1980，(12)：1 203-1 208.(GAO Guorui. Classification of microstructure and collapsibilityof loess[J]. 1980，(12)：1 203-1 208.(in Chinese))
[10]	谭罗荣，孔令伟. 特殊岩土工程土质学[M].北京：科学出版社，2006：246-248.(TAN Luorong，KONG Lingwei. Soil tectonics of special geotechnical engineering[M]. Beijing：Science Press，2006：246-248.(in Chinese))
[11]	ASSALLAY AM，ROGERS CDF，SMALLEY IJ.Formation and collapse of metastable particle packings and open structures in loess deposits[J]. Engineering Geology，1997，48(1/2)：101-115.
[12]	JEFFERSON I，AHMAD M.Formation of artificial collapsible loess[C]// Problematic Soils and Rocks and In Situ Characterization，[S. l.]：[s. n.]，2007：1-10.
[13]	ASSALLAY AM，JEFFERSON I，ROGERS CDF，et al.Fragipan formation in loess soils：development of the Bryant hydroconsolidation hypothesis[J]. Geoderma，1998，83(1/2)：1-16.
[14]	ROGERSCDF，SMALLEYIJ. The shape of loess particles[J].Naturwissenschaften，1993，80(10)：461-462.