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| 基于三维数值模拟的露天煤矿复合边坡稳定性分析 | |
| 引用本文： | 李荣伟,侯恩科,刘天林.基于三维数值模拟的露天煤矿复合边坡稳定性分析[J].煤田地质与勘探,2008,36(2):43-47. |
| 作者姓名： | 李荣伟 侯恩科 刘天林 |
| 作者单位： | 1. 西安科技大学地质与环境工程系,陕西,西安,710054;华北科技学院安全工程中心,北京,101601 2. 西安科技大学地质与环境工程系,陕西,西安,710054 3. 煤炭科学研究总院西安研究院,陕西,西安,710054 |
| 摘 要： | 借助VC及fish语言编程,将AutoCAD、Surfer、ANSYS等软件耦合应用,完成了复杂地质条件下的FLAC3D建模。在地质调查及统计分析试验数据的基础上,应用Hoek-Brown经验破坏准则确定了边坡岩体的综合强度指标。然后,采用FLAC3D,对比分析了不考虑地下水及三维流固耦合两种情况下的位移场、应力场和塑性区分布规律,并采用强度折减法求得了三维边坡安全稳定系数。结果表明,由外排土场和采掘帮坡构成的复合边坡呈现复杂的潜在破坏模式,以及在地下水影响下存在潜在失稳。与传统的边坡稳定性分析方法相比,三维数值分析优势明显。 |
| 关 键 词： | 边坡稳定性 三维数值分析 三维建模 FLAC3D 流固耦合 |
| 文章编号： | 1001-1986(2008)02-0043-04 |
| 修稿时间： | 2007年8月22日 |
Stability analysis of combined slope in open-pit coal based on 3D numerical simulation |
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| LI Rong-wei,HOU En-ke,LIU Tian-lin.Stability analysis of combined slope in open-pit coal based on 3D numerical simulation[J].Coal Geology & Exploration,2008,36(2):43-47. | |
| Authors: | LI Rong-wei HOU En-ke LIU Tian-lin |
| Abstract: | The FLAC3D modeling,under complex geologic condition,is brought to success by coupling ANSYS with AutoCAD and Surfer by VC or Fish-Language programming.Based on the trial statistical datum,geological investiga-tion and Hoek-Brown rock mass strength estimation method,the rock mass strengths are decided.And then the numerical calculations of mechanical distortion are finished under the two different instances,namely without taking account of groundwater and 3D fluid and stress coupling analysis.By comparative analyzing the distribution of ground displacement field,principal stresse field and plastic zones under the two different instances,and slope safety factor get by shear strength reduction method without taking account of groundwater.The analysis results show that the potential failure model of combined body of open pit slope and external dump slope is complex,and the slope may be instable under the influence of groundwater.The paper concludes that the superiority of 3D numerical analysis in the analysis of slope sta-bility is obvious,which deserves practice and generalization. |
| Keywords: | slope stability 3D numerical analysis 3D modeling FLAC3D fluid and stress coupling |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |