文献类型：期刊文献

中文题名：尾粉砂动力特性试验及数值模拟

英文题名：EXPERIMENT AND NUMERICAL SIMULATION OF DYNAMIC CHARACTERISTICS OF TAILING SILTY SAND

作者：谢强[1];张丹丽[2]

第一作者：谢强

机构：[1]河南财经政法大学工程管理与房地产学院,郑州450046;[2]河南水利与环境职业学院土木工程系,郑州450008

第一机构：河南财经政法大学工程管理与房地产学院

年份：2018

卷号：48

期号：8

起止页码：133-136

中文期刊名：工业建筑

外文期刊名：Industrial Construction

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD_E2017_2018】；

语种：中文

中文关键词：尾粉砂;动力特性试验;数值模拟

外文关键词：tailing silty sand;dynamic characteristics test;numerical simulation

摘要：地震作用下尾矿粉砂液化是尾矿坝灾害的主要原因之一。为研究尾粉砂动力特性,分别对不同围压和固结比的尾粉砂进行动力特性试验,分析其对尾粉砂动强度和动模量的影响。此外采用有限元软件对地震荷载作用下尾矿库的位移、地震加速度和孔隙水压力分布进行数值模拟。结果表明：尾粉砂动模量随着围压和固结比的增加而增大;尾粉砂的动强度及其抗液化能力随着围压和固结比的增大而提高;在地震作用下,位移、加速度和孔压最大值出现在尾矿库堆积坝坡面和顶部沉积滩面。
The liquefaction of tailing is one of the main causes of tailing dam disasters under earthquake action. In order to study the dynamic characteristics of tailing,the dynamic properties of tailing silty sand with different confining pressures and consolidation ratios were tested,and the influence on the dynamic strength and dynamic modulus of tailing silty sand was analyzed. In addition,the displacement,seismic acceleration and pore water pressure distribution of the tailing impoundments under earthquake action were simulated by FEM. The results showed that tailing silty sand dynamic shear modulus increased with the increase of confining pressure and consolidation ratio;the dynamic strength of tailing silty sand and anti-liquefaction capability would be improved with the increase of confining pressure and consolidation ratio; under the seismic action,the maximum values of displacement and acceleration and pore pressure were observed on the tailing dam slopes and the top sediment surfaces.