防灾减灾工程学报2018，Vol.38Issue(1)：109-117,9.DOI:10.13409/j.cnki.jdpme.2018.01.015
尾砂压缩固结特性试验及e-P曲线模型分析研究
Experimental Research on Compressibility and Consolidation Characteristics of Tailings and e-P Curve Model Analysis
摘要
Abstract
To investigate the influence of bulk factor (K) and moisture content (ω) on the compressibility and consolidation characteristics of lead-zinc tailings,the WG triple high-pressure consolidation apparatus was adopted to carry out standard oedometer tests on lead-zinc tailings.The characteristics of compressibility and consolidation of lead-zinc tailings were analyzed based on the modified e-P curve analysis model.The results indicate that:(1) the compression coefficient avl-2 decreases as K increases.When ω＜ωopt,avl-2 fluctuates between 0.034 MPa-1 and 0.092 MPa-1;When ω≥ωopt,av1-2 increases as ω increases.When ω≥15％,the tailings are categorized as compressible soil.Coefficient of consolidation Cv decreases as K increases and with the increase of ω,it increases first and then reduce.When ω=9％,Cv reaches maximum.The e-P model is modified and the model parameters are optimized.The correctness and rationality of the model is verified.The research results provide experimental and theoretical basis for stability analysis of tailings ponds,which provides a scientific reference for the safe operation and recycling of tailings ponds.关键词
铅锌尾砂/标准固结试验/压缩固结特性/e-P曲线模型Key words
lead-zinc tailings/standard consolidation test/compressibility and consolidation characteristics/e-P curve model分类
建筑与水利引用本文复制引用
梁冰,王堃,姜利国,董擎,王俊光..尾砂压缩固结特性试验及e-P曲线模型分析研究[J].防灾减灾工程学报,2018,38(1):109-117,9.基金项目
国家自然科学基金面上项目(51574145)、国家自然科学基金青年基金项目(51404130)资助 （51574145）
