南水北调与水利科技
南水北調與水利科技
남수북조여수리과기
SOUTH-TO-NORTH WATER
2014年
2期
129-132
,共4页
南水北调中线%非饱和黄土%物理力学试验%基质吸力%强度规律
南水北調中線%非飽和黃土%物理力學試驗%基質吸力%彊度規律
남수북조중선%비포화황토%물리역학시험%기질흡력%강도규률
Middle Route of South-to-North Water Diversion Project%unsaturated loess%physical mechanics test%matrix suction%shear strength
为了查明南水北调中线穿黄工程南岸黄土的工程性质，研究不同工况下的黄土边坡稳定性，并为后续渠道开挖方案的确定提供设计依据，对该区域非饱和黄土强度特性进行了试验研究，内容包括黄土的物理性质试验、饱和黄土三轴CU试验、土-水特征曲线试验和非饱和黄土的抗剪试验。试验结果表明，该区域的黄土为低液限黏土，粉粒含量较大，持水能力较差，吸力内摩擦角φb＝7．58°。
為瞭查明南水北調中線穿黃工程南岸黃土的工程性質，研究不同工況下的黃土邊坡穩定性，併為後續渠道開挖方案的確定提供設計依據，對該區域非飽和黃土彊度特性進行瞭試驗研究，內容包括黃土的物理性質試驗、飽和黃土三軸CU試驗、土-水特徵麯線試驗和非飽和黃土的抗剪試驗。試驗結果錶明，該區域的黃土為低液限黏土，粉粒含量較大，持水能力較差，吸力內摩抆角φb＝7．58°。
위료사명남수북조중선천황공정남안황토적공정성질，연구불동공황하적황토변파은정성，병위후속거도개알방안적학정제공설계의거，대해구역비포화황토강도특성진행료시험연구，내용포괄황토적물이성질시험、포화황토삼축CU시험、토-수특정곡선시험화비포화황토적항전시험。시험결과표명，해구역적황토위저액한점토，분립함량교대，지수능력교차，흡력내마찰각φb＝7．58°。
In order to investigate the characteristics of loess on south bank of crossing the Yellow River Project in the Middle Route of South-to-North Water Diversion Project ,and the slope stability of loess under different working conditions to provide design support for the subsequent channel excavation scheme ,the strength tests of unsaturated loess were conducted in the study area .The experimental tests included the tests of physical properties of loess ,the CU triaxial tests of saturated loess ,the tests of soil-water characteristic curve ,and the shear tests of unsaturated loess .The results showed that the loess in the study area is clay with low liquid limit ,large quantity of silt ,low water-holding capacity ,and a suction internal friction angle of φb=7.58° .
