东北大学学报:自然科学版 ›› 2016, Vol. 37 ›› Issue (4): 578-582.DOI: 10.12068/j.issn.1005-3026.2016.04.026

• 资源与土木工程 • 上一篇    下一篇

无底柱深孔后退式崩矿法采场结构参数优化

汪伟, 罗周全, 秦亚光, 孙杨   

  1. (中南大学 资源与安全工程学院, 湖南 长沙410083)
  • 收稿日期:2014-09-28 修回日期:2014-09-28 出版日期:2016-04-15 发布日期:2016-04-05
  • 通讯作者: 汪伟
  • 作者简介:汪伟(1990-), 男, 安徽安庆人, 中南大学博士研究生; 罗周全(1966-), 男, 湖南邵阳人, 中南大学教授, 博士生导师.
  • 基金资助:
    “十二五”国家科技支撑计划项目(2012BAk09B02-05); 国家自然科学基金资助项目(51274250).

Stope Parameters Optimization of Non-pillar Longhole Retreat Caving

WANG Wei, LUO Zhou-quan, QIN Ya-guang, SUN Yang   

  1. School of Resources and Safety Engineering, Central South University, Changsha 410083.
  • Received:2014-09-28 Revised:2014-09-28 Online:2016-04-15 Published:2016-04-05
  • Contact: WANG Wei
  • About author:-
  • Supported by:
    -

摘要: 为实现某铅锌矿山无底柱深孔后退式崩矿法安全高效开采,开展采场结构参数优化研究.实测-650m中段原岩应力,运用Surpac-FLAC3D模型生成技术构建数值分析模型,进而采用多元应力回归方法反演初始地应力场.通过弹性力学小薄板理论分析得到顶板稳定性随采场结构参数的变化关系,结合实际采准条件,提出采场结构参数初选方案.基于反演地应力场,进行初选方案开采数值分析,获得各方案力学响应指标.引入多目标理想点法决策,考虑安全和经济指标,计算方案评价指标集与理想解的向量近似度,优化确定该矿无底柱深孔后退式崩矿法采场结构参数为矿房采场宽10m,矿柱采场宽8m.

关键词: 初始地应力场, 采场结构参数, 弹性力学, 数值分析, 理想点法决策

Abstract: In order to realize safe and efficient mining of non-pillar longhole retreat caving in a lead-zinc mine, stope parameters optimization was conducted. Field measurement of in-situ stress was carried out on-650m level, and a numerical model was constructed by Surpac-FLAC3D modeling technique. On these grounds, in-situ stress field was inversed by multiple regression method. The change relation of roof stability with stope parameters was obtained by using the small thin elastic mechanics theory, and the primary stope parameters schemes were put forward by combining with actual mining condition. Based on the inversion of ground stress field, the mining numerical analysis of primary schemes was conducted to get mechanical response indexes of different schemes. The safety and economy indexes were comprehensively considered, and the multi-objective TOPSIS decision method was introduced, the superior order of parameter schemes was determined by calculating the vector similarity of evaluation indexes set to ideal solution. Optimal stope parameters of non-pillar longhole retreat caving were finally determined, i.e., chamber width 10m, pillar width 8m.

Key words: in-situ stress field, stope parameter, elastic mechanics, numerical analysis, TOPSIS decision

中图分类号: