河北水利电力学院学报2025，Vol.35Issue(3)：59-65,7.DOI:10.16046/j.cnki.issn2096-5680.2025.03.010
泥岩膨胀力影响因素试验研究
Experimental Study on Influencing Factors of Mudstone Swelling Force
摘要
Abstract
In order to strengthen the design and construction quality control of mudstone slope,annu-lar knife samples with different initial water content and compaction degree are prepared with expansive mudstone weathered soil samples from northwest Hebei Province as raw materials,and micro-deformation expansion force tests with deformation values of 0,0.2,0.4 and 0.6 mm are carried out by using a single lever consolidation instrument.The law between swelling force and two factors of compaction degree and initial moisture content is studied,the mechanism of swelling force change under micro-deformation is ana-lyzed,and the correlation between each factor and soil swelling force is analyzed by grey correlation theo-ry.The results show that under"0"deformation,the time history curve of the expansion force can be di-vided into three stages:rapid growth of the expansion force,slow growth of the expansion force and stable expansion force.Under micro-deformation,the time history curve of the expansion force can be divided in-to two stages:slow growth of the expansion force and stable expansion force.Under the condition of a cer-tain degree of compaction,the expansion force decreases with the increase of initial water content.Under the condition of a certain water content,the expansion force increases with the increase of the degree of compaction.The expansion force Pe can be reduced effectively by increasing the allowable micro-deforma-tion rate.According to the calculation results of grey correlation theory,it is found that the effect of al-lowable micro-deformation rate on the swelling force of mudstone samples is the most sensitive factor com-pared with initial water content and compaction degree.关键词
膨胀性泥岩/膨胀力/微变形/允许微变形率/灰色关联理论Key words
expansive mudstone/expansive force/micro-deformation/allowable micro-deformation rate/grey correlation theory分类
建筑与水利引用本文复制引用
马江平,万伟..泥岩膨胀力影响因素试验研究[J].河北水利电力学院学报,2025,35(3):59-65,7.基金项目
张家口市重点研发项目(2322012B) （2322012B）
