3D cavity detection technique and its application based on cavity auto scanning laser system

  • Xi-ling Liu (쇵쾣쇩)Email author
  • Xi-bing Li (샮쾦뇸)
  • Fa-ben Li (샮랢本)
  • Guo-yan Zhao (헔맺퇥)
  • Yu-hui Qin (쟘풥믔)


Ground constructions and mines are severely threatened by underground cavities especially those unsafe or inaccessible ones. Safe and precise cavity detection is vital for reasonable cavity evaluation and disposal. The conventional cavity detection methods and their limitation were analyzed. Those methods cannot form 3D model of underground cavity which is used for instructing the cavity disposal; and their precisions in detection are always greatly affected by the geological circumstance. The importance of 3D cavity detection in metal mine for safe exploitation was pointed out; and the 3D cavity laser detection method and its principle were introduced. A cavity auto scanning laser system was recommended to actualize the cavity 3D detection after comparing with the other laser detection systems. Four boreholes were chosen to verify the validity of the cavity auto scanning laser system. The results show that the cavity auto scanning laser system is very suitable for underground 3D cavity detection, especially for those inaccessible ones.

Key words

cavity detection 3D laser detection cavity auto scanning laser system 


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Copyright information

© Central South University 2008

Authors and Affiliations

  • Xi-ling Liu (쇵쾣쇩)
    • 1
    Email author
  • Xi-bing Li (샮쾦뇸)
    • 1
  • Fa-ben Li (샮랢本)
    • 2
  • Guo-yan Zhao (헔맺퇥)
    • 1
  • Yu-hui Qin (쟘풥믔)
    • 2
  1. 1.School of Resources and Safety EngineeringCentral South UniversityChangshaChina
  2. 2.Luoyang Luanchuan Molybdenum Group Incorporated CompanyLuoyangChina

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