摘要
以山西省某工程弃渣场为例,通过建立弃渣场有限元分析模型,分析其内部应力大小及分布情况,并考虑不同堆载过程的渣场稳定性变化情况。结果显示,渣场边坡位移变形主要集中在边坡下部,在渣场坡脚处有局部破坏趋势。考虑压坡脚式(顺排)和覆盖式(逆排)两种堆载顺序方式,堆载后对原有边坡整体稳定性造成削弱趋势;但相较而言,覆盖式堆载所产生的最大位移平均值和最大应变平均值均小于压坡脚式,覆盖式堆载优于压坡脚式。
The waste dump slope is made up of loose slag body with poor engineering performance and poor skid resistance. Taking the abandoned slag yard of a project in Shanxi Province as an example,by establishing the finite element analysis model of the abandoned slag yard,the size and distribution of internal stress are analyzed,and the stability changes of the slag yard in different loading processes are considered. The results show that the displacement and deformation of the slag yard slope are mainly concentrated in the lower part of the slope,and there is a trend of local failure at the foot of the slag yard slope. Considering the two loading sequence modes of foot-loading and cover-loading,the overall stability of the original slope will be weakened after loading,but in comparison,the average value of maximum displacement and maximum strain produced by cover-loading are less than that of foot-loading,and the cover-loading is better than that of foot-loading.
作者
杨建强
YANG Jian-qiang(China Railway 17th Bureau Group Construction Engineering Co.Ltd.,Taiyuan 030006,China)
出处
《水利科技与经济》
2019年第3期72-78,共7页
Water Conservancy Science and Technology and Economy
关键词
弃渣场
稳定性
堆载过程
有限元分析
slag dump
stability
loading process
finite element analysis
