| 吴家沟赤泥尾矿库初期坝稳定性分析 |
| |
| 引用本文： | 靳晓光,;吴庚林,;陈绍清,;谢园丁.吴家沟赤泥尾矿库初期坝稳定性分析[J].世界科技研究与发展,2014(3):221-225. |
| |
| 作者姓名： | 靳晓光 ;吴庚林 ;陈绍清 ;谢园丁 |
| |
| 作者单位： | [1]重庆大学土木工程学院,重庆400030; [2]重庆大学山地城镇建设与新技术教育部重点实验室,重庆400045; [3]河北省区域地质矿产调查研究所,廊坊065000; [4]重庆科技学院安全工程学院,重庆401331 |
| |
| 基金项目： | 重庆市国土资源和房屋管理局科技计划项目（渝国土房管发[2010]171号）资助 |
| |
| 摘 要： | 吴家沟尾矿库初期坝包括下部天然岩土体初期坝和上部土石混填初期坝两部分。在分析初期坝基本特征的基础上,把初期坝视作重力式档土墙结构,采用极限平衡法计算堆积坝对初期坝的静止土压力和主动土压力,应用抗剪强度公式分析上部初期坝与基岩之间坝基面的抗滑稳定性,得到无水和有水工况下静止土压力和主动土压力作用下坝基面抗滑稳定安全系数,其安全系数值明显大于规范规定的安全系数。采用ABAQUS有限元软件对初期坝应力特征进行分析,初期坝(包括天然坝体和堆石坝体)的最大剪应力及最大竖向应力分别小于坝体的抗剪强度和抗压强度,初期坝是稳定的。
|
| 关 键 词： | 赤泥尾矿库 初期坝 稳定性 极限平衡 有限元 |
Stability Analysis of Initial Dam in Wujiagou Red Mud Tailings |
| |
| Institution: | JIN Xiaoguang WU Genglin CHEN Shaoqing XIE Yuanding ( 1. School of Civil Engineering, Chongqing University, Chongqing 400045 ; 2. Key Laboratory of New Technology for Construction of Cities in Mountain Area ( Chongqing University), Ministry of Education, Chongqing 400045 ; 3. Hebei Institute of Regional Geological and Mineral Resource Survey, Langfang 065000; 4. Chongqing Safety Engineering Institute,Chongqing University of Science ＆ Technology ,Chongqing 401331 ) |
| |
| Abstract: | The initial dam of Wujiagou tailings consists of the lower natural rock initial dam and the upper rock-soil mixed initial dam.Based on the analysis of the basic characteristics of the initial dam,the initial dam is considered as gravity retai-ning wall structure.The static earth pressure and active earth pressure of the fill dam to the initial dam are calculated by limit equilibrium method.The shear strength formula is used to study the stability against sliding of the interface between the upper initial dam and the bedrock.Then,the interface stability factor of static earth pressure and active earth pressure are respectively calculated under aqueous and anhydrous conditions.As a result,the interface stability factor is much greater than the safety factor of specification.The stress characteristic of initial dam is analyzed by adopting ABAQUS finite element software.The shear and vertical stress of the initial dam including natural dam and fill dam are both less than shear strength and compressive strength of the dam.It can be inferred the initial dam is stable. |
| |
| Keywords: | red mud tailings the initial dam stability limit equilibrium finite element |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
