土工基础

›› 2018, Vol. 32 ›› Issue (2): 229-232.

• 工程实录 • 上一篇    下一篇

筑坝尾砂模拟实际工况物理力学性质的研究

 徐 凡, 杨永晶, 李吉权   

  1. （中冶集团武汉勘察研究院有限公司，武汉 430080）
  • 收稿日期:2017-06-21 修回日期:2017-07-02 出版日期:2018-04-30 发布日期:2018-05-09
  • 作者简介:徐 凡（1980-），男，工程师，研究方向为岩土工程。

Physical and Mechanical Properties of a Tailing Sand Under Construction Conditions

 XU   Fan, YANG  Yong-Jing, LI  Ji-Quan   

  1. Wuhan Surveying Geotechnical Research Institute Co. Ltd., MCCC, Wuhan, 430080
  • Received:2017-06-21 Revised:2017-07-02 Online:2018-04-30 Published:2018-05-09

摘要： 拟建尾矿库位于西藏甲玛铜多金属矿二期西南面的果郎沟山沟，工程筑坝材料以废石料为主，筑坝料场就近选择，优先考虑库内。根据设计要求，拟采用尾砂作为子坝筑坝材料，该项目土工试验项目除了坝基、库区内岩土试验项目外，需要对一期尾砂采样并模拟实际工况进行抗剪强度试验及进行相关测试，检测项目主要为：尾矿的物理和力学性质试验；尾矿的平板载荷试验；模袋震动密实试验。试验结果表明，尾砂在不同的状态下，含水率和密度的变化对尾砂的力学指标有较为显著的影响。

关键词: 筑坝尾砂, 物理及力学性, 泌水性, 渗透性, 竖向静载试验, 模袋震动密实试验

Abstract: The proposed tailing reservoir is located at the Qianglanggou gully in the southwest of the Second Phase Development of the Jiala Copper Polymetallic Deposit in Huatailong Mine, Tibet. The tailing dam fill material is predominantly waste soil and rock from the mining operation. The additional borrow material should be directly from local site with a priority consideration of areas inside the reservoir. This paper presents the geotechnical test results on the tailing sands and other materials under construction conditions. The tested items are: Physical and mechanical properties of tailing sands, in-situ plate loading test and mold bag vibration compact tests. The results indicate that, the moisture content and density are significantly affecting the mechanical properties of the tailing sands; 

Key words: Tailing Sand for Dam Construction, Physical and Mechanical Properties, Bleeding, Permeability, Axial Static Loading Tests, Mold Bag Vibration Compaction Test