[1]田园,张敬博,马林.尾矿砂固结系数变化规律试验研究[J].西安建筑科技大学学报(自然科学版),2020,52(01):92-97.[doi:10.15986j.1006-7930.2020.01.013]
　TIAN Yuan,ZHANG Jingbo,MA Lin.Experimental study on variation law of tailings sand consolidation coefficient[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2020,52(01):92-97.[doi:10.15986j.1006-7930.2020.01.013]
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尾矿砂固结系数变化规律试验研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
52
期数:
2020年01期
页码:
92-97
栏目:
出版日期:
2020-03-31

文章信息/Info

Title:
Experimental study on variation law of tailings sand consolidation coefficient
文章编号:
1006-7930(2020)01-0092-06
作者:
田园1; 张敬博1; 马林2
(1.杨凌职业技术学院 水利工程分院,陕西 杨凌 712100; 2.山西省交通科学研究院,山西 太原 030000)
Author(s):
TIAN Yuan1;  ZHANG Jingbo1;  MA Lin2
(1. Water Resources Engineering Branch,Yangling Vocational and Technical College, Shaanxi Yangling 712100, China; 2. Shanxi Transportation Research Institute, Taiyuan 030000, China)
关键词:
尾矿砂;  固结系数;  时间平方根法;  孔隙比;  试验研究
Keywords:
tailings sand;  consolidation coefficient;  time square root method;  void ratio;  experimental research
分类号:
TU411.5
DOI:
10.15986j.1006-7930.2020.01.013
文献标志码:
A
摘要:
为了探究尾矿砂固结系数随干密度及压力的变化规律,本文分别对不同粗细颗粒、不同干密度的尾矿砂进行标准固结试验,以时间平方根法求取固结系数,并进行相关分析.试验表明,尾矿砂在固结压缩起始阶段变形最大,有显著的瞬时压缩变形,稍后变形逐渐趋缓; 尾矿砂的固结系数皆随着压力的增加而下降,压力小于200 kPa时,固结系数下降较快,当压力达到200 kPa以后,固结系数下降趋缓.固结系数随着尾矿砂干密度的增大而减小,且粗粒尾矿砂比细粒尾矿砂的固结系数更大.
Abstract:
In order to explore the variation law of tailings sand consolidation coefficient with dry density and pressure, this paper conducts standard consolidation tests on different coarse and fine particles and different dry density tailings sand, and calculates the consolidation coefficient by time square root method. analysis. The test shows that the tailings sand has the largest deformation at the initial stage of consolidation and compression, and there is significant transient compression deformation, and the deformation gradually slows down later; the consolidation coefficient of the tailings sand decreases with the increase of pressure, and the pressure is less than 200 kPa. The knot coefficient decreases rapidly. When the pressure reaches 200 kPa, the consolidation coefficient decreases. The consolidation coefficient decreases with the increase of dry density of tailings sand, and the consolidation coefficient of coarse tailings sand is larger than that of fine tailings.

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备注/Memo

备注/Memo:
收稿日期:2019-09-30修改稿日期:2020-03-17基金项目:山西省应用基础研究基金项目(201701D221213); 杨凌职业技术学院科学研究基金项目(A2017036)第一作者:田园(1986-),女,讲师,硕士研究生,主要从事岩土工程领域的教学与科研工作.E-Mail:1309462032@qq.com
更新日期/Last Update: 2020-04-25