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Gold Science and Technology ›› 2021, Vol. 29 ›› Issue (4): 620-628.doi: 10.11872/j.issn.1005-2518.2021.04.170

• Mining Technology and Mine Management • Previous Articles    

Teaching and Training of Mine Roof Fall Accident Based on VR Technology

Zhenyu NIE1,2(),Keping ZHOU1,2(),Zhipeng LIANG1,2   

  1. 1.School of Resources and Safety Engineering,Central South University,Changsha 410083,Hunan,China
    2.Research Center for Mining Engineering and Technology in Cold Regions,Central South University,Changsha 410083,Hunan,China
  • Received:2020-09-24 Revised:2021-03-30 Online:2021-08-31 Published:2021-10-08
  • Contact: Keping ZHOU E-mail:nzy2785738607@163.com;kpzhou@vip.163.com

Abstract:

In order to improve the efficiency of VR training for non-coal mine roof fall,based on Unity3D,3DMax and Visual Studio 2019 software,a mine roof fall accident teaching and training platform has been developed including three modules:Pre-training,hidden rock recognition training and disaster site escape training.The platform uses 3DMax modeling software and Unity3D engine to complete the mining VR environment modeling,through the HTC VIVE equipment to complete the interaction between trainees and the mine virtual environment,using virtual coaches for demonstration teaching.Firstly,train the trainees through the mine knowledge question bank to improve the trainees’ cognition level of the mine,and then use the virtual coach to guide the trainee to identify and clear the hidden rock blocks and escape from the disaster site.The comparison of the training effect of the virtual coach and the traditional UI text was carry out,and the trainees will be tested on the disaster scene and the effect evaluation of the VR virtual coach training platform will be completed.The results showed that the average time of escape for trainees trained by virtual coach was 192.9 s,and the average time for trainees trained by UI text was 238.1 s.The latter was 45.2 s longer than the former.The test were repeated one week later. The average time of the trainees who trained by virtual coach was 224.7 s,and the average time of the trainees who used UI text training was 290.9 s.The latter was 66.2 s longer than the former.At the same time,compare to the first test,the escape time of trainees using virtual coach training increased by 16.5%,while the escape time of trainees using UI text training increased by 22.2%.The test results show that the VR technology-based non-coal mine roof fall teaching and training platform can promote the trainees to maintain a longer-term memory of the training content,and the overall training efficiency is higher than UI text teaching,which can effectively improve the trainees’ safety awareness and emergency response capabilities.Interviews with trainees show that the use of virtual coach training can better guide trainees’ attention,create an atmosphere of real-person teaching,and have good promotion and application value.

Key words: metal mine, roof fall, rock roadway, VR modeling, route planning, safety training

CLC Number: 

  • TP391.9

Fig.1

Diagram of mine model effect"

Table 1

Overall architecture of mine roof fall spalling accident application platform based on VR technology"

模块内容功能
预培训模块应用平台简介,受训者注册登录,对矿山内容的初步教学帮助受训者熟悉应用平台,提高其对矿山的认知水平
隐患岩块识别培训模块虚拟教练陪同受训者熟悉灾害演化规律隐患岩块识别和清理培训,沉浸性教学
灾害现场逃生培训模块虚拟教练传授逃生技巧,受训者体验岩块坍塌现场提高受训者的灾害现场逃离能力

Fig.2

Running route of mine roof fall spalling accident application platform based on VR technology"

Fig.3

Loose rock signs"

Fig.4

Flow chart of disaster scene escape"

Fig.5

Schematic diagram of user escape when a disaster occur"

Fig.6

Comparison of two training methods"

Fig.7

Evaluation experiment site"

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