[1]王效宾,杨平,张婷.人工冻土融沉特性试验研究[J].南京林业大学学报(自然科学版),2008,32(04):108-112.[doi:10.3969/j.jssn.1000-2006.2008.04.025]
 WANG Xiao-bin,YANG Ping*,ZHANG Ting.Study on thaw settlement behaviour of artificial freezing soil[J].Journal of Nanjing Forestry University(Natural Science Edition),2008,32(04):108-112.[doi:10.3969/j.jssn.1000-2006.2008.04.025]
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人工冻土融沉特性试验研究
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《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

卷:
32
期数:
2008年04期
页码:
108-112
栏目:
研究论文
出版日期:
2008-07-20

文章信息/Info

Title:
Study on thaw settlement behaviour of artificial freezing soil
文章编号:
1000-2006(2008)04-0108-05
作者:
王效宾杨平张婷
南京林业大学土木工程学院, 江苏 南京 210037
Author(s):
WANG Xiao-bin YANG Ping* ZHANG Ting
College of Civil Engineering Nanjing Forestry University, Nanjing 210037, China
关键词:
人工冻土 融沉系数 含水率 干密度 冷端温度
Keywords:
Artificial freezing soil Thaw settlement coefficient Water content Dry density Freezing end temperature
分类号:
TU445
DOI:
10.3969/j.jssn.1000-2006.2008.04.025
文献标志码:
A
摘要:
<正>根据生态系统经营的目的,提出了森林生态系统经营决策的6个空间结构因子,并建立了以顶极群落为目标,以维持生态系统健康和功能持续为目的,形成林木空间均匀分布为特征的森林生态系经营决策模型。结果表明,所建决策模型可以极大地改善系统的空间结构,有利于系统功能的完整和健康。
Abstract:
In order to promote the application of the artificial freezing technology in the underground engineerings of city, a set of testing devices were developed to do frozen swollen experiment and thaw settlement experiment of artificial permafrost. According to three kinds of soil in Nanjing region, thaw settlement experiments were done at the selfdeveloped testing devices. The experiments results showed that the thaw settlement of soil occured only when the soil water content above the boundary water content. The thaw-settlement coefficient increased with the water content augment. Regarding to non-saturated soil,there existed a critical dry density between thaw-settlement coefficient and dry density changes. The critical dry density corresponded to the thaw-settlement coefficient in the smallest soil body. As there is the water source supply, thaw-settlement coefficient increases along with the temperature increment. When the water source doesnt supply, thaw-settlement coefficient reduces along with the temperature increment. Mealy sand is not the frozen swollen sensitive soil if it was compared with silt clay and mealy clay.

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更新日期/Last Update: 2013-05-20