Steam outburst in a hot mine in Japan

M. Inoue

Research output: Chapter in Book/Report/Conference proceedingConference contribution


This paper describes a steam outburst in a metal mine which occurred in December 1992 in Japan, resulting in two fatalities. The outburst occurred just after blasting in a heading face 600 m below surface (SL-50 m), 1664 m from a mouth of the mine. The scale of the outburst was large and the fragments of the outburst spread up to 34 m from the face, the total volume of the outburst was estimated to be 206 m3 The outburst materials were mostly clay originated from the typical surrounding rock of sulfide ore and basalt. The shape of the larger outburst fragments were slabs with a thickness of 10 to 20 cm. The victims were found in a main ventilation air shaft, 175 m and 380 m from the face, respectively. The mine mainly produces copper, lead and zinc. The face was ventilated by a 560 mm diameter duct with a fan and the strata temperature of the rock was estimated to be in the range of 120 to 140°C. There is a famous hot spring near the mine. A thorough investigation into the unprecedented accident was made including an on-site inspection and investigation of rock characteristics in laboratories.

Original languageEnglish
Title of host publication8th International Mine Ventilation Congress - Proceedings
Number of pages4
Publication statusPublished - 2005
Event8th International Mine Ventilation Congress - Brisbane, QLD, Australia
Duration: Jul 6 2005Jul 8 2005

Publication series

NameAustralasian Institute of Mining and Metallurgy Publication Series


Other8th International Mine Ventilation Congress
CityBrisbane, QLD

All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering
  • Geotechnical Engineering and Engineering Geology


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