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黄金科学技术 ›› 2020, Vol. 28 ›› Issue (2): 264-270.doi: 10.11872/j.issn.1005-2518.2020.02.030

• 采选技术与矿山管理 • 上一篇    

基于CRITIC-CW法的地下矿岩体质量评价

戚伟1,2(),李威1,李振阳3,4,赵国彦3   

  1. 1.山东黄金矿业(莱州)有限公司三山岛金矿,山东 莱州 261442
    2.北京科技大学土木与资源工程学院,北京 100083
    3.中南大学资源与安全工程学院,湖南 长沙 410083
    4.北京奥信化工科技发展有限责任公司,北京 100040
  • 收稿日期:2019-04-17 修回日期:2019-11-03 出版日期:2020-04-30 发布日期:2020-05-07
  • 作者简介:戚伟(1980-),男,山东泰安人,工程师,从事采矿工艺及岩石力学方面的研究工作。qiwei109@163.com
  • 基金资助:
    “十三五”国家重点研发计划课题“深部金属矿绿色开采关键技术研发与示范”(2018YFC0604606)

Rock Mass Quality Evaluation of Underground Mine Based on CRITIC-CW Method

Wei QI1,2(),Wei LI1,Zhenyang LI3,4,Guoyan ZHAO3   

  1. 1.Sanshandao Gold Mine,Shandong Gold Mining(Laizhou) Co. ,Ltd. ,Laizhou 261442,Shandong,China
    2.School of Civil and Resources Engineering,University of Science and Technology Beijing,Beijing 100083,China
    3.School of Resources and Safety Engineering,Central South University,Changsha 410083,Hunan,China
    4.Beijing Auxin Chemical Technology Ltd,Beijing 100040,China
  • Received:2019-04-17 Revised:2019-11-03 Online:2020-04-30 Published:2020-05-07

摘要:

岩体质量评价结果是地下矿各类工程的重要基础数据。针对影响岩体质量的因素众多,且各因素间模糊性显著的特点,为更准确地评价地下矿岩体质量,提出了一种可定量分析影响岩体质量各因素间模糊性的CRITIC-CW法。选取了岩石质量指标RQD、岩石单轴饱和抗压强度RW、岩体完整性系数Kv、结构面强度系数Kf和地下水渗水量ω共5个指标用于评价地下矿岩体质量。收集了国内外20组岩体质量评价的样本数据,采用CRITIC法计算样本数据的离散性和内在联系,获得了评价指标的权重。采用CRITIC-CW法对20组岩体质量评价样本进行评价,结果误判仅为一例,表明CRITIC-CW法具有较高的准确性和可靠性。采用CRITIC-CW法对三山岛金矿新立矿区部分采场的岩体质量进行评价,结果表明:所评价采场的岩体质量主要为Ⅲ级和Ⅳ级,岩体质量较差,依据岩体质量评价结果,对评价等级为Ⅳ级的采场及周边工程加强支护后,矿区冒落现象显著减少。

关键词: 岩体质量评价, CRITIC, 云模型(CW), 地下矿, 确定度, 三山岛金矿

Abstract:

The rock mass of underground mine is a very complex dynamic system,which has many influencing factors.The rock mass quality evaluation is not only an important means to understand the characteristics of underground mine rock mass,but also an important basic data of underground mine design,construction and disaster prevention.The fuzzy and uncertainty of rock mass quality evaluation are strong.Cloud model theory can analyze the fuzzy and quantitative problems,which is very suitable for the random and fuzzy evaluation of multi indexes of rock mass quality evaluation.In order to evaluate the rock mass quality of underground mine more accurately and efficiently,the CRITIC-CW method was proposed,which can quantitatively analyze the fuzziness among many factors affecting the rock mass quality.According to the characteristics of many influencing factors of rock mass quality,rock quality index (RQD),rock uniaxial saturated compressive strength(RW),rock mass integrity coefficient(Kv),structural plane strength coefficient(Kf) and groundwater seepage amount(ω) were selected to evaluate the quality of underground mine and rock mass.20 groups of sample data of rock mass quality evaluation at home and abroad were collected.The original data were standardized,the standard deviation,the correlation coefficient and the amount of information were calculated by using critical method to quantify the discreteness and internal relationship of sample data,and then the weight of each evaluation index was obtained.Based on the CRITIC-CW method,20 groups of rock mass quality evaluation samples were evaluated,and only one case is misjudged,which shows that the CRITIC-CW method has high accuracy and reliability.Xinli mining area of Sanshandao gold mine is the only gold mine under the sea in China.The geological conditions of the mining area and the quality of surrounding rock are complex.In the production process,local pumice falling,roof falling,collapse and other disasters often occur due to blasting vibration,mechanical drilling and other activities,that seriously threatening the safety of mine production.In order to understand the rock mass quality of the mining area better,the CRITIC-CW method was used to evaluate the rock mass quality of some stopes in Xinli mining area of Sanshandao gold mine.The results show that the rock mass quality of the evaluated stopes is mainly class Ⅲ and class Ⅳ,and the rock mass quality is general.According to the results of the rock mass quality evaluation,after strengthening the support for the stopes and surrounding works with the evaluation class Ⅳ,the caving phenomenon of the mining area is obvious decrease.

Key words: rock mass quality evaluation, CRITIC, Cloud Model (CW), underground mine, degree of certainty, Sanshandao gold mine

中图分类号: 

  • TD3

表1

岩体质量分级标准[24,25,26]"

类别RQD/%RW/MPaKVKfω/[L·(min·10 m)-1
90~100200~1201.00~0.751.0~0.80~5
75~90120~600.75~0.450.8~0.65~10
50~7560~300.45~0.300.6~0.410~25
25~5030~150.30~0.200.4~0.225~125
0~2515~00.20~0.000.2~0.0125~300

表2

岩体质量评价样本数据"

样本评价指标实测等级本文结果
X1X2X3X4X5
171.890.10.570.450.0
251.040.20.380.5510.5
352.025.00.220.5212.0
468.090.00.380.3821.0
586.3105.00.680.756.3
678.875.00.530.658.8
768.852.50.410.5513.8
887.095.00.700.509.8
976.090.00.570.5011.0
1050.035.00.300.3520.0
1168.090.00.570.3518.5
1282.095.00.700.350.0
1375.087.30.300.630.0
1456.337.50.340.4521.3
1543.826.30.280.3550.6
1631.318.80.230.25100.0
1752.528.60.380.1623.0
18100.0200.01.001.000.0
1997.5180.00.940.951.3
2095.0160.00.880.952.5

图1

各指标隶属于不同岩体质量等级的云模型"

表3

新立矿区各评价指标实测值"

样本位置评价指标
X1X2X3X4X5
-200 m中段1#采场82810.400.4822.0
-200 m中段2#采场80810.400.4517.0
-240 m中段5#采场78800.430.4275.0
-320 m中段2#采场55820.430.4362.5
-320 m中段3#采场75780.400.4217.5

图2

各样本隶属于不同岩体质量等级的确定度"

表4

新立矿区样本评价结果"

样本位置最高确定度评价结果
-200 m中段1#采场0.6333
-200 m中段2#采场0.7067
-240 m中段5#采场0.4437
-320 m中段2#采场0.4578
-320 m中段3#采场0.7161
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