摘要
为探究库岸边坡岩体的损伤特性,以常见的中风化砂岩为例,通过室内长期浸泡、干湿循环条件下的力学试验,分析了砂岩的物理参数、应力—应变曲线及劣化特征。结果表明,长期浸泡对岩样的损伤作用分为前期的饱和作用和后期的水解作用;干湿循环的每个周期都会造成岩样小颗粒脱落或胶结物溶解。长期浸泡、干湿循环两种状态对岩样的损伤都很大,且首次损伤程度较大,占整体损伤的一半以上。研究结果为库岸边坡的稳定性研究提供了理论依据。
The physical parameters,stress-strain curves and degradation characteristics of the common weathered sandstone were analyzed by mechanical experiments under long-term immersion and wet-dry cycle in order to explore the damage characteristics of rock slope in the bank slope.The results show that the damage effect of long-term immersion of rock is divided into pre-saturation and post-hydrolysis effect;each period of the wet-dry cycle results in small rock particles falling off and the cementation dissolution.Both of long-term immersion and wet-dry cycle have great damage to the rock specimen,and the damage degree of the first time is more than half of the total damage.The results provide a theoretical basis for the stability of bank slope.
出处
《水电能源科学》
北大核心
2017年第3期123-126,共4页
Water Resources and Power
基金
水利部公益性行业科研专项经费项目(201401029)
国家自然科学基金重点项目(51439003)
三峡大学土木与建筑学院2015年硕士创新基金项目(2015CX028)
关键词
中风化砂岩
长期浸泡
干湿循环
损伤特性
劣化度
medium weathered sandstone
long-term soaking
dry-wet cycle
damage characteristics
physical parameter
deterioration degree
作者简介
李洁（1991-），女，硕士研究生，研究方向为库岸边坡工程，E—mail：604515903@qq．com
通讯作者：王乐华（1977-），男，教授，研究方向为库岸边坡工程，E-mail：lehuatg@126．com
