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Gold Science and Technology ›› 2020, Vol. 28 ›› Issue (2): 301-308.doi: 10.11872/j.issn.1005-2518.2020.02.173

• Mining Technology and Mine Management • Previous Articles    

Ventilation Mode Optimization of Mining Face at High Altitude Based on ANP

Rongrong LI(),Zijun LI(),Yilong HUANG,Shuqi ZHAO   

  1. School of Resources and Safety Engineering,Central South University,Changsha 410083,Hunan,China
  • Received:2019-10-27 Revised:2020-02-12 Online:2020-04-30 Published:2020-05-07
  • Contact: Zijun LI E-mail:13164802656@163.com;zijunli@csu.edu.cn

Abstract:

Ventilation of tunneling face is an important part of mine ventilation system,which is of great signi-ficance for guaranteeing the health and life safety of workers.However,the special plateau environment with low pressure and low oxygen has put forward higher requirements for ventilation effect.According to the special environmental requirements of high altitude metal mine and based on analytic network process,11 evaluation indexes were established from three aspects of safety benefit,economic benefit and technical benefit.There is a complex interaction between the evaluation indexes of the ventilation effect of the heading face.The correlation of the evaluation indexes was obtained through group discussion among 12 researchers in the field of mine ventilation.Thus the network structure of ventilation effect evaluation index of heading face was established and the final evaluation system was formed.ANP method involves many elements,the calculation process is complex and the calculation is large.According to the analysis of the ventilation effect evaluation index of the tunneling face of the high-altitude mine and the result of correlation relationship construction,the ANP model diagram of ventilation effect evaluation of the tunneling face was established in the super decision software.The comprehensive weight of three ventilation modes and the global weight of each evaluation index were calculated to select the best ventilation method.This evaluation system was applied to a metal mine at an altitude of 3 400 m in Yunnan.Ten people,including experts in mine ventilation engineering and on-the-job mine ventilation technicians,were invited to fill in the pairwise comparison judgment matrix questionnaire.By comparing the importance of the two evaluation indexes,the judgment matrix was established,and the super decision software was used for relevant calculation.The results show that the comprehensive weight of far-pressing-near-suction ventilation mode ventilation mode is 46.16%,and its ventilation effect is the best.The global weight of “oxygen supply effect” is 20.08%,which is the most important evaluation index.The oxygen supply effect should be taken into account when choosing the ventilation mode of mining face at high altitude.It is proved by practice that the conclusions obtained by the evaluation system are in line with the actual safety of mines,and can point out the main factors to evaluate the ventilation effect of mines.

Key words: high altitude metal mines, drifting ventilation, ventilation scheme, analytic network process(ANP), evaluation index, super decision software

CLC Number: 

  • TD724

Table 1

Evaluate index system of the ventilation effect in tunneling face"

一级指标二级指标一级指标二级指标
方案P长压短抽P1技术效益T有效风量率T1
长抽短压P2风量供需比T2
长抽长压P3通风阻力T3
安全效益S除尘效果S1经济效益E购置费用E1
供氧效果S2安装费用E2
风流稳定性S3使用维护费用E3
风机稳定性S4风机效率E4

Table 2

Investigation form of ventilation effect evaluation index of tunneling face"

评价指标方案安全效益S技术效益T经济效益E
P1P2P3S1S2S3S4T1T2T3E1E2E3E4
方案PP1
P2
P3
安全效益SS1
S2
S3
S4
技术效益TT1
T2
T3
经济效益EE1
E2
E3
E4

Table 3

Correlation of first-level index of ventilation effect evaluation of tunneling face"

评价指标方案P安全效益S技术效益T经济效益E
方案P012912
安全效益S12841
技术效益T91022
经济效益E121669

Table 4

Correlation of secondary index of ventilation effect evaluation of tunneling face"

评价指标方案P安全效益S技术效益T经济效益E
方案PP10434
P20434
P30434
安全效益SS13100
S23100
S33320
S43321
技术效益TT13311
T23311
T33400
经济效益EE13423
E23402
E33421
E43423

Table 5

1~9 scaling method"

序号重要性等级Cij赋值
1i、j两元素同等重要1
2i元素比j元素稍重要3
3i元素比j元素明显重要5
4i元素比j元素强烈重要7
5i元素比j元素极端重要9
6i元素比j元素稍不重要1/3
7i元素比j元素明显不重要1/5
8i元素比j元素强烈不重要1/7
9i元素比j元素极端不重要1/9

Table 6

Judgement matrix of influencing factors of scheme P"

方案P安全效益S技术效益T经济效益E
安全效益S153
技术效益T1/511/2
经济效益E1/321

Fig.1

ANP algorithm steps"

Fig.2

ANP model for ventilation effect evaluation of tunneling face"

Fig.3

Judgment matrix assignment interface between first level indexes in SD software"

Table 7

Comprehensive weight of evaluation index"

一级指标二级指标全局权重/%综合权重/%
方案P长压短抽P117.8646.16
长抽短压P206.7817.51
长抽长压P314.0636.33
安全效益S除尘效果S116.4537.81
供氧效果S220.0846.13
风流稳定性S302.7506.32
风机稳定性S404.2409.75
技术效益T有效风量率T102.2334.70
风量供需比T203.7057.49
通风阻力T300.5007.82
经济效益E购置费用E104.6040.48
安装费用E201.1610.22
使用维护费用E303.3129.11
风机效率E402.3020.20
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