裂土裂隙演化过程试验研究  

Experimental research on crack evolution process in fissured clay

作　　者：马佳[1] 陈善雄[1] 余飞[1] 冯美果[1] 

机构地区：[1]中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,武汉430071

出　　处：《岩土力学》2007年第10期2203-2208,共6页Rock and Soil Mechanics

基　　金：国家自然科学基金资助项目(No.50279050)

摘　　要：裂土的裂隙是影响其工程性质的重要因素。为研究土体裂隙在外界环境变化条件下的演化过程,设计了一套精确控制湿度的试验装置,再现了裂土在脱湿情况下裂隙产生、传播、扩展的过程。对试验结果进行了理论分析,总结了试验中裂土裂隙出现、传播、扩展的规律。研究结果有助于加深对土体裂隙变化物理过程的认识,为处理工程问题提供思路。The cracks of fissured soils are important factors that affect the soil engineering properties. To study the process of crack evolution under changing environmental conditions, an experimental device that can precisely control the humidity is designed; and the process of crack formation, propagation and extending reappears by using this device. The experimental results have been theoretically analyzed; and the disciplinarians of crack emergence, propagation and extending in the experiment have been educed. The research results could do help to the comprehension of the physical changing process of soil cracks and provide considerations to deal with the engineering problems.

关 键 词：裂土 裂隙 形成 传播 扩展 非饱和土理论 裂隙扩展判据 

分 类 号：TU411.3[建筑科学—岩土工程]