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黄金科学技术 ›› 2019, Vol. 27 ›› Issue (1): 80-88.doi: 10.11872/j.issn.1005-2518.2019.01.080

• • 上一篇    下一篇

基于改进的RS-TOPSIS模型的岩爆倾向性预测

王旷1,李夕兵1,马春德1,2,顾合龙1   

  1. 1. 中南大学资源与安全工程学院,湖南 长沙 410083
    2. 中南大学高等研究中心,湖南 长沙 410083
  • 收稿日期:2017-12-31 修回日期:2018-03-12 出版日期:2019-02-28 发布日期:2019-03-19
  • 作者简介:王旷(1995-),男,江西抚州人,硕士研究生,从事岩石动力学及矿山深部灾害研究工作。kuwang@csu.edu.cn
  • 基金资助:
    国家重点研发计划项目“深部高应力诱导与能量调控理论”(编号:2016YFC0600706)资助

Rock-burst Proneness Prediction Based on Improved RS-TOPSIS Model

Kuang WANG1,Xibing LI1,Chunde MA1,2,Helong GU1   

  1. 1. School of Resource and Safety Engineering,Central South University,Changsha 410083,Hunan,China
    2. Center for Advanced Study,Central South University,Changsha 410083,Hunan,China
  • Received:2017-12-31 Revised:2018-03-12 Online:2019-02-28 Published:2019-03-19

摘要:

针对目前岩爆倾向性中预测模型权重确定存在不足导致模型精度不高的现状,为更准确地预测岩爆倾向性,提出综合运用粗糙集理论中的代数观和信息观,确定属性最优权重,并修正岩爆倾向性与评价指标之间的关系,建立岩爆等级理想点矩阵。根据岩爆发生条件,选取岩石脆性指数、切应力指标和弹性应变能指数3项指标作为岩爆判别指标,以国内外20组典型岩爆数据为样本,建立改进的粗糙集—理想点法(RS-TOPSIS)岩爆倾向性预测模型,并应用该模型对玲珑金矿等工程实际进行了岩爆倾向性预测。结果表明:改进后样本预测精度相比于改进前有了显著提高,所建立的模型对实际工程的岩爆倾向性预测效果良好,预测结果更准确。

关键词: 岩爆预测, 粗糙集理论, 代数观, 信息观, 理想点法, 最优权重

Abstract:

In view of the present situation that the weight determination of the prediction model in rock-burst proneness is insufficient,which leads to the low accuracy of the model,it is not accurate to use the single rough set algebraic view or information view to determine the weight.In order to predict the rock-burst proneness more accurately,the optimal weight was determined according to the algebraic view and information view in the rough set theory.Because the ideal point range of no rock-burst and violent rock-burst is too large,the relationship between rock-burst proneness and evaluation index was corrected and the ideal point matrix of rock-burst grade was established.Half of the interval length of light rock-burst and medium rock-burst was taken as the corresponding interval length of no rock-burst and violent rock-burst,the upper limit and the lower limit were set respectively for the ideal point matrix.The “approximate ideal point” and “interval” indexes were used to optimize the ideal point.Brittleness coefficient,stress strength coefficient and elastic energy index were selected to construct attribute set according to the occurrence conditions of rock-burst.Taking 20 rock-burst cases as the training and testing samples,using the improved rough set method and the modified rock-burst intensity ideal point method to establish the improved RS-TOPSIS model of rock-burst proneness prediction.The model was applied to predict the rock-burst proneness of the Linglong gold mine et al.The results show that the prediction accuracy of the improved sample reaches 95%,which is a certain improvement from the accuracy of 80%.The model can easily and quickly predict the rock-burst proneness,and the prediction accuracy is more accurate.The model has a good effect on predicting the rock-burst proneness of the actual project,provides a more accurate method for predicting the rock-burst proneness of the underground engineering,and the predicted results tallies with the actual situation.The prediction model of rock burst proneness has certain practical value and good application prospects.

Key words: rock-burst prediction, rough set theory, algebraic attributes, informational attributes, TOPSIS method, optimal weight

中图分类号: 

  • TU45

图1

改进的粗糙集—理想点法处理流程图"

表1

国内外若干工程岩爆数据"

编号σc/σtσθ/σcWet岩爆倾向性
113.20.586.3强岩爆
217.50.455.1中等岩爆
320.90.394.6中等岩爆
441.00.201.7无岩爆
513.20.666.8强岩爆
617.50.384.5弱岩爆
729.70.413.3无岩爆
831.20.113.7无岩爆
927.80.233.9无岩爆
1015.00.536.5中等岩爆
1121.70.424.5中等岩爆
1221.70.395.0中等岩爆
1323.00.104.7无岩爆
1426.90.445.5中等岩爆
1518.50.813.8中等岩爆
1629.40.417.3弱岩爆
1722.90.595.0弱岩爆
1817.50.546.6弱岩爆
1919.70.385.0中等岩爆
2028.40.385.0弱岩爆

表2

岩爆倾向性分级标准"

分级标准σc/σtσθ/σcWet
无岩爆>40.0<0.3<2.0
弱岩爆40~26.70.3~0.52.0~3.5
中等岩爆26.7~14.50.5~0.73.5~5.0
强岩爆<14.5>0.7>5.0

表3

岩爆倾向性预测的知识表达系统"

样本编号单项指标确定的岩爆等级D
C1C2C3
14344
23243
33233
41111
54344
63232
72221
82131
92131
103343
113233
123233
133131
142243
153433
162242
173332
183342
193233
202232

表4

属性最优权重"

属性基于代数观属性权重基于信息观属性权重最优权重
C10.26670.3626250.2955
C20.46670.4076080.4489
C30.26670.2297670.2556

表5

修正的岩爆倾向性分级标准"

分级标准σc/σtσθ/σcWet
无岩爆40.00~46.650.20~0.301.25~2.00
弱岩爆26.70~40.000.30~0.502.00~3.50
中等岩爆14.50~26.700.50~0.703.50~5.00
强岩爆8.40~14.500.70~0.805.00~5.75

表6

改进的RS-TOPSIS岩爆倾向性模型预测结果"

样本编号Si+Si-Ei+预测等级实际等级
改进的RS-TOPSISRS-TOPSIS
10.1559050.4521060.743582444
20.2557110.3551610.581400333
30.3047170.3312680.52087432*3
40.5173800.0791460.132579111
50.1039980.4971100.82699042*4
60.3047110.3210160.48697123*2
70.3458250.1678590.326794111
80.5000330.1581150.240242111
90.4213900.2012380.323208111
100.1873020.4276620.695426333
110.2921510.3113510.515908333
120.3008560.3096310.507187333
130.4757090.2337240.329452111
140.2844900.3189520.528554333
150.1671920.5103060.7532214*33
160.3004650.2907310.49176824*2
170.2033180.1828640.473518222
180.1869710.1529080.449890222
190.3016220.3158920.511555333
200.3274570.2762570.457596222
注:X*表示第X组数据误判

表7

岩爆倾向性等级贴近度"

岩爆倾向性等级Ei+岩爆倾向性等级Ei+
无岩爆0~0.370541中等岩爆0.506471~0.740015
弱岩爆0.370541~0.506471强岩爆0.740015~1.000000

表8

国内若干工程岩爆倾向性预测结果"

工程名称岩性或位置σc/σtσθ/σcWet实际情况预测结果
玲珑金矿花岗岩31.70.316.41强岩爆强岩爆
小秦岭金矿888坑38号SM6200段12.20.5424.89中等岩爆中等岩爆
888坑38号SM4740段30.70.4097.30弱岩爆弱岩爆
888坑38号SM4320段29.80.4615.30弱岩爆弱岩爆
冬瓜山矽卡岩11.10.5543.97中等岩爆中等岩爆
平煤集团某矿三水平大巷岩爆位置15.30.5603.30中等岩爆中等岩爆
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