冻融状态和含水率对林区土壤力学性能的影响  

Effects of freezing-thawing conditions and water content on soil mechanical properties in forest areas

作　　者：周远 赵秋月 张博锐 杨全喜 于淼 孙术发[1] Zhou Yuan;Zhao Qiuyue;Zhang Borui;Yang Quanxi;Yu Miao;Sun Shufa(College of Engineering and Technology,Northeast Forestry University,Harbin 150040,China)

机构地区：[1]东北林业大学工程技术学院,黑龙江哈尔滨150040

出　　处：《山西建筑》2020年第18期48-50,共3页Shanxi Architecture

基　　金：中央高校基本科研业务费专项资金资助(2572019BL02)。

摘　　要：林区土壤的冻融扰动一直是阻碍林区装备通过性研究的重要难题,为了进一步了解林区土壤性能,对取自帽儿山实验林场的两种林区土壤进行三轴剪切试验,将得到的试验数据进行统计分析,以含水率和冻融状态为自变量,研究其对林区土壤抗剪强度的影响。结果表明:无论是在冻融状态还是未冻状态,两种土的粘聚力和内摩擦角均随着含水率的增加而减小,而且变化趋势各不相同。试验结果对于林区土壤力学性能的研究具有一定的参考意义。The forest soil freezing and thawing disturbance has been hinder the important problem of forest equipment through the study,in order to further understanding of forest soil properties,from mount Maoer experimental forest farm of two kinds of forest soil triaxial shear test,will be the statistical analysis of test data with moisture content and freeze-thaw status as independent variables,study its effects on forest soil shear strength. The results show that the cohesive force and the angle of internal friction of the two soils decrease with the increase of water content in both freezing-thawing state and unfrozen state,and the variation trend is different. The results of the experiment have certain reference significance for the study of soil mechanical properties in forest areas.

关 键 词：林区土壤 土壤含水率 冻融状态 三轴剪切 

分 类 号：TU411[建筑科学—岩土工程]