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黄金科学技术 ›› 2017, Vol. 25 ›› Issue (4): 39-45.doi: 10.11872/j.issn.1005-2518.2017.04.039

• 采选技术与矿山管理 • 上一篇    下一篇

基于最优组合赋权的地下矿山岩体质量可拓评价模型

胡建华,艾自华   

  1. 中南大学资源与安全工程学院,湖南  长沙  410083
  • 收稿日期:2015-12-29 修回日期:2017-03-20 出版日期:2017-08-30 发布日期:2017-10-30
  • 作者简介:胡建华(1975-),男,湖南衡南人,博士,教授,从事高效安全采矿技术与岩土工程的稳定性分析研究工作。hujh21@126.com
  • 基金资助:
    “十二五”国家科技支撑计划项目“深部多层重叠矿体高效开采与灾害控制关键技术研究”(编号:2015BAB12B01)和国家自然科学基金项目“深部采动下地质结构体跨尺度时变力学行为试验及机理”(编号:41672298)联合资助。
     

Extension Evaluation Model of Rock Mass Quality for Underground Mine Based on Optimal Combination Weighting

HU Jianhua,AI Zihua   

  1. School of Resources and Safety Engineering,Central South University,Changsha    410083,Hunan,China
  • Received:2015-12-29 Revised:2017-03-20 Online:2017-08-30 Published:2017-10-30

摘要:

岩体质量分级辩识是矿山工程设计、施工与支护的基础,在岩体工程应用中具有重要的意义。应用可拓学理论,以司家营铁矿超大规模地下采场的岩体工程为例,选取岩石单轴抗压强度、围岩质量指标、结构面摩擦系数、节理间距、地下水状态和完整性系数等评价指标,建立矿山岩体质量评价物元模型。基于最优组合赋权理论,提出了将层次分析法和熵值法获得的权值进行最优组合的指标权重系数的确定方法。研究结果表明:(1)计算获得了待评价岩体的工程质量特征值,实现了岩体工程分类,客观反映岩体与相邻岩体等级间的差值,为矿山岩体工程提供基础的设计参数;(2)基于最优组合赋权的权重系数,可以实现多种权重值的组合赋权,降低不同赋权间的误差,提高了质量评价的准确性;(3)评价结果与工程地质RMR法、层次分析法和熵权法评价结果一致性高,说明评价结果可靠;(4)基于离差平方和最大,使得评价结果之间的离散性高,更有利于决策。 

关键词: 岩体质量评价, 最优组合, 权系数, 物元模型, 可拓学

Abstract:

The classification identification of rock mass quality is the basis of mine engineering design,construction and support,and has vital significance in rock mass engineering application.Based on extensional theory,taking rock engineering of super-large scale underground stope in Sijiaying iron mine as an example,the evaluation matter element model of rock mass quality was established according on factors,i.e. rock uniaxial compressive strengthen (RC),rock quality designation(RQD),strengthen coefficient of structural plane(Jf),joints distance(Jd), groundwater condition (W),integrity coefficient(Kv).The optimal combination of AHP and entropy method based on optimal combination weighting law used to calculate weight aggregation of evaluating factors is proposed.The study shows that:(1)The engineering quality characteristic value of rock mass to be evaluated are obtained,realizes the engineering rock mass category and objectively reflect the difference between rock mass and  adjacent rock mass level,provides the basis design parameters for mine rock project;(2)Based on the optimal combination weight coefficient,achieve combination of multiple weight values,reduce the error between different weights,improve the accuracy of rock quality evaluation;(3)The evaluation result is consistent with the results by engineering geological RMR method,analytic hierarchy process and entropy weight method,so evaluation result is reliable;(4)Based on the maximum square sum of deviations,the dispersion between evaluation results is high,so it is more conductive to decision-making.

Key words:  rock quality evaluation, optimal combination, weighting coefficients, matter element model, extension theory

中图分类号: 

  • TD313

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