冻土热物理性质的统计特征及分布规律

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英文篇名：Statistical characters and distribution laws of thermophysical properties of frozen soil 作者：石梁宏 ; 李双洋 ; 王冲 ; 尹楠 英文作者：SHI Lianghong;LI Shuangyang;WANG Chong;YIN Nan;State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences;University of Chinese Academy of Sciences;College of Civil Engineering and Mechanics, Lanzhou University; 关键词：冻土 ; 热物理性质 ; 导热系数 ; 容积热容量 ; 概率分布 ; χ2检验法 英文关键词：frozen soil;;thermophysical property;;thermal conductivity;;volumetric heat capacity;;probability distribution;;χ2 testing method 中文刊名：ZNGD 英文刊名：Journal of Central South University(Science and Technology) 机构：中国科学院西北生态环境资源研究院冻土工程国家重点实验室;中国科学院大学;兰州大学土木工程与力学学院; 出版日期：2018-12-26 出版单位：中南大学学报(自然科学版) 年：2018 期：v.49;No.292 基金：国家自然科学基金资助项目(41672315,41230630);; 中国科学院前沿科学重点研究项目(QYZDY-SSW-DQC015);中国科学院“西部之光”项目(2014);中国科学院青年创新促进会项目(2015349);中国科学院STS项目(HHS-TSS-STS-1502);; 冻土工程国家重点实验室自主研究课题(SKLFSE-ZY-18)~~ 语种：中文; 页：ZNGD201812020 页数：8 CN：12 ISSN：43-1426/N 分类号：166-173

摘要

为揭示冻土热物理性质的随机性及内在规律,以青藏高原粉质黏土为研究对象,分别对5种典型温度条件下冻土的热物理参数进行50组大样本测试。研究结果表明:即使在同一温度下,试样的热物理参数也存在明显的随机性,但又呈现出一定的统计规律;冻土的热物理参数(导热系数和容积热容量)服从正态分布或对数正态分布,并利用总体分布假设的χ2检验法验证了分布规律的正确性。
        To reveal the randomness and intrinsic regularity of the frozen soil, thermal physical parameters of 50 sets of silty clay in Qinghai—Tibet Plateau were tested in each temperature state. The result shows that even though under the same temperature, the thermal parameters of samples exhibit great randomness and uncertainty, but obey statistical rules to some extent. According to the analysis with probability and mathematical statistics method, the thermal physical parameters(thermal conductivity and volumetric heat capacity) of the frozen soil obey normal distribution or lognormal distribution, and this hypothesis is proven to be valid by the χ2 hypothesis testing method.

引文

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