电阻率法研究双液硅化加固过程中黄土的结构变化

发布时间：2018-01-14 16:40

本文关键词：电阻率法研究双液硅化加固过程中黄土的结构变化　出处：《科学技术与工程》2014年35期 　论文类型：期刊论文

【摘要】：通过连续测试双液硅化加固过程中黄土的电阻率变化。计算得到了电阻率结构特性参数的变化规律,包括土的平均结构因子、平均形状因子与各向异性系数。分析了加固过程土体结构的变化机理。试验结果表明:黄土电阻率随着电流频率的升高而逐渐减小并最终趋于稳定,当电流频率范围为50 k Hz~1 MHz时,电流频率对黄土电阻率实测值影响较小;双液硅化加固过程中,竖向和横向电阻率均随着时间的增加先减小,最终保持稳定,且减小趋势均集中在初始阶段。平均结构因子和平均形状因子均随时间的增加先减小,最终趋于稳定。各向异性系数随时间的增加先快速增大,并最终趋于稳定。
[Abstract]:Through the continuous measurement of the resistivity change of loess during the process of double-liquid silicification reinforcement, the variation law of the resistivity structural parameters, including the average structure factor of the soil, is obtained. The average shape factor and anisotropy coefficient are analyzed. The experimental results show that the resistivity of loess decreases gradually with the increase of current frequency and eventually tends to be stable. When the current frequency range is 50 k Hz~1 MHz, the effect of current frequency on the measured value of loess resistivity is small. In the process of double-liquid silicification, the vertical and transverse resistivity decrease first with the increase of time, and finally keep stable. The decreasing trend is concentrated in the initial stage. The average structure factor and the average shape factor decrease first with the increase of time, and finally tend to be stable. The anisotropy coefficient increases rapidly with the increase of time. And eventually tend to stabilize.
【作者单位】：太原理工大学建筑与土木工程学院;山西省交通科学研究院黄土地区公路建设与养护技术交通行业重点实验室;
【基金】：国家自然科学基金(51078254) 山西省高等学校优秀青年学术带头人支持计划黄土地区公路建设与养护技术交通行业重点实验室开放基金(KLTLR-Y13-4)资助
【分类号】：TU444
【正文快照】： 山西省高等学校优秀青年学术带头人支持计划和黄土地区公路建设与养护技术交通行业重点实验室开放基金(KLTLR-Y13-4)资助化学硅化法,是用压力把浆液均匀地注入目的土层,浆液排挤土粒间的水分、气体并占据其位置与土体融为一体,使原来松散、软弱的土体变为一种结构紧密、强度较

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