CAJ | 학술논문

利用失水收缩性强的黏土，进行含有基底潜山和无潜山两种情况下土体失水开裂特征试验。研究表明：(1)土体失水开裂过程可划分为开裂前Ⅰ、快速开裂Ⅱ、开裂趋于停滞Ⅲ三个阶段；(2)含有潜山的试验中裂缝发育演化时受到了基底起伏的显著影响；(3)在Ⅲ阶段，尽管表面开裂仍在发生，裂缝发育的整体格局已经不再发生显著变化；从裂缝形态看，后期裂缝与前期裂缝主要呈现为垂直相交，特别是在起伏区范围内。饱和黏土表面开裂主要是由水分丧失引起的土体基质吸力和表面收缩率的变化产生的，边界条件和基底起伏对开裂有着显著控制作用。
이용실수수축성강적점토，진행함유기저잠산화무잠산량충정황하토체실수개렬특정시험。연구표명：(1)토체실수개렬과정가화분위개렬전Ⅰ、쾌속개렬Ⅱ、개렬추우정체Ⅲ삼개계단；(2)함유잠산적시험중렬봉발육연화시수도료기저기복적현저영향；(3)재Ⅲ계단，진관표면개렬잉재발생，렬봉발육적정체격국이경불재발생현저변화；종렬봉형태간，후기렬봉여전기렬봉주요정현위수직상교，특별시재기복구범위내。포화점토표면개렬주요시유수분상실인기적토체기질흡력화표면수축솔적변화산생적，변계조건화기저기복대개렬유착현저공제작용。
The cracking of soil has resulted in significant geological engineering and environmental problems.Indoor experiments on water loss ratio and the desiccation cracking of clay were carried out at room temperature.The research results indicate that:(1 )the cracking progress can be di-vided into pre-cracking,rapid cracking,and cracking stagnation stages,(2)the cracking process is influenced by the buried hill of basement,and (3)though the surface cracking persists,the pattern of cracking has not significantly changed.The later cracks were approximately perpendicu-lar to the early cracks,especially in the basement zone.The change in metric suction and surface shrinkage through water loss leads to the desiccation and cracking of the clay and the cracking process is controlled primarily by the boundary and geomorphologic form of the basement.