运输机械荷载对土的黏着性特征影响研究  

Study on the Influence of Transport Machinery Load on Soil Adhesion Characteristics

作　　者：李航[1,2,3] 张泽 金豆豆[4] 翟金榜 杨林桢[1,2,6] 董添春 LI Hang;ZHANG Ze;JIN Doudou;ZHAI Jinbang;YANG Linzhen;DONG Tianchun(School of Civil Engineering,Northeast Forestry University,Harbin 150040,China;Institute of Cold Regions Science and Engineering,Northeast Forestry University,Harbin 150040,China;Collaborative Innovation Center for Environment,Road Construction and Maintenance in Northeast Permafrost Region(Northeast Forestry University),Harbin 150040,China;State Key Laboratory of Frozen Soil Engineering,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China;School of Traffic and Transportation,Northeast Forestry University,Harbin 150040,China;Heilongjiang Transportation Investment Group Co.,LTD.,Harbin 150001,China;Qinghai-Tibet Railway Company,Xining 810000,China)

机构地区：[1]东北林业大学土木工程学院,哈尔滨150040 [2]东北林业大学寒区科学与工程研究院,哈尔滨150040 [3]东北多年冻土区环境、道路建设与养护协同创新中心(东北林业大学),哈尔滨150040 [4]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,兰州730000 [5]东北林业大学交通学院,哈尔滨150040 [6]黑龙江省交通投资集团有限公司,哈尔滨150001 [7]中国铁路青藏集团有限公司,西宁810000

出　　处：《森林工程》2023年第2期157-164,共8页Forest Engineering

基　　金：国家自然科学基金项目(41771078);国家自然科学基金委员会(NSFC)与俄罗斯基础研究基金会(RFBR)合作交流项目(42011530083);黑龙江省交通投资集团有限公司科研项目(JT-100000-ZC-FW-2021-0129);青藏集团公司科技研究开发计划(QZ2021-G03)。

摘　　要：土颗粒与水作用后黏着外部介质的性能称为土的黏着性,这种黏附外部介质能力的强弱,通常用黏着力来衡量。外部介质特征与土壤成分的改变都会使土的黏着性发生改变,其产生的黏着力会导致各种运输机械耗能增加,降低工作效率。为找寻不同外部荷载对黏着力特征影响程度,选取亚黏土、兰州黄土进行黏着力实验,分析在500、750、1000、1500 g加载情况下黏着力峰值的分布情况,结合图像电子化处理软件Image-ProPlus与Adobe Photoshop对试验土样微观图像处理计算的结果,得到黏着力与变形量的关联性。结果表明,随着含水率增大,黏着力呈现先上升达到峰值而后下降的变化趋势;随着外荷载增加,黏着力达到峰值所需含水率逐渐下降,且黏着力会随外荷载增大而增大;黏着力增大,接触面分离后产生的变形面积也会增大,可以通过观察变形面积去估算黏着力大小。The performance of soil particles adhering to external media after interaction with water is called soil adhesion,and the strength of this adhesion ability is usually measured by adhesion force.The change of external medium characteristics and soil composition will change the adhesion of soil,which will lead to the increase of energy consumption of various transportation machinery and the decrease of work efficiency.In order to find out the influence degree of different external loads on the adhesion characteristics,the sub-clay and Lanzhou loess were selected for adhesion experiments,and the distribution of the adhesion peak value under the loading conditions of 500,750,1000 and 1500 g was analyzed.The correlation between adhesion and deformation was obtained by combining the results of microcosmic image processing of test soil samples with Image-ProPlus and Adobe Photoshop.The results showed that with the increase of moisture content,the adhesive force increased firstly,reached the peak value and then decreased.With the increase of external load,the moisture content required to reach the peak of the adhesive force gradually decreased,and the adhesive force increased with the increase of external load.As the adhesive force increased,the deformation area generated by the separation of the contact surface would also increase.The adhesive force can be estimated by observing the deformation area.

关 键 词：土黏着性 黏着力特征 图像处理 二值化 土壤表面 

分 类 号：U421[交通运输工程—道路与铁道工程] TU42[建筑科学—岩土工程]