CAJ | 학술논문

为了探讨非饱和保德组红土基质吸力与干密度、含水率、饱和度和体积含水率之间的关系，采用滤纸法在试验室测试了36组不同含水率和干密度状态的重塑非饱和保德组红土的含水率，分别计算了相应的基质吸力，得到了非饱和保德组红土在不同干密度下的土-水特征曲线。对试验结果进行分析表明：基质吸力与干密度、饱和度及体积含水率的关系在不同的含水率段具有不同的特点；在含水率较低时基质吸力值对干密度、饱和度及体积含水率的变化很敏感，而在含水率较高时基质吸力值对干密度、饱和度及体积含水率的变化不敏感；在相同的干密度下，基质吸力与含水率、饱和度及体积含水率呈非线性关系，随着含水率、饱和度及体积含水率的增加，基质吸力呈现出急剧减小的趋势。
위료탐토비포화보덕조홍토기질흡력여간밀도、함수솔、포화도화체적함수솔지간적관계，채용려지법재시험실측시료36조불동함수솔화간밀도상태적중소비포화보덕조홍토적함수솔，분별계산료상응적기질흡력，득도료비포화보덕조홍토재불동간밀도하적토-수특정곡선。대시험결과진행분석표명：기질흡력여간밀도、포화도급체적함수솔적관계재불동적함수솔단구유불동적특점；재함수솔교저시기질흡력치대간밀도、포화도급체적함수솔적변화흔민감，이재함수솔교고시기질흡력치대간밀도、포화도급체적함수솔적변화불민감；재상동적간밀도하，기질흡력여함수솔、포화도급체적함수솔정비선성관계，수착함수솔、포화도급체적함수솔적증가，기질흡력정현출급극감소적추세。
This paper studies the relationship among the matric suction,dry density,water content,saturation and volumetric water content of Baode laterite.The water content of 36groups of experimental specimens under different water contents and dry densities are measured with filter paper method in laboratory.The associated matric suctions are computed.The soil-water characteristics curves (SWCC )for unsaturated Baode laterite under different dry densities are obtained.The results show that the relationships among the matric suction,dry density,saturation and volumetric water content are of different characteristics at different water contents.The matric suction is not sensitive to changes of dry density,saturation and volumetric water content for low water content laterite.But it is contrary for high water content laterite.Relationships among matric suction,water content,saturation and volumetric water content are nonlinear.Matrix suction decreases sharply with the increase of water content,saturation and volumetric water content with the same dry density.