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http://dx.doi.org/10.7474/TUS.2018.28.2.125

Optimized Design of Mine Span Considering the Characteristics of Rockmass in Soft Ground  

Jang, Myoung Hwan (Mining & Geotechnical Team, Korea Resources Corporation)
Ha, Taewook (Mining & Geotechnical Team, Korea Resources Corporation)
Jeong, Hee Sun (Mining & Geotechnical Team, Korea Resources Corporation)
Publication Information
Tunnel and Underground Space / v.28, no.2, 2018 , pp. 125-141 More about this Journal
Abstract
For a long-term mine development plan, the determination and design of mine tunnel size are very important because it is the basis of plans for equipment, transportation and operation. The ${\bigcirc}{\bigcirc}$ mine has had a difficulty in changing the mining plan due to the design of the tunnels with an emphasis on productivity improvement, and much effort was needed to maintain the mine tunnel. In this study, we designed the mine tunnel with optimized tunnel span considering the mechanical properties of rockmass and established the support plan. To do this, the estimation of the mechanical parameters(Swelling pressure, deformation coefficient and earth coefficient), field investigations and various analyses were carried out. As a result, it was necessary to consider the downsizing of the tunnel section in order to maintain the tunnel stability and dimension by using the roof bolt and analyzed that various functional constructions of the support material and method would be required to maintain the current tunnel size.
Keywords
A long-term mine development plan; Productivity improvement; Design of optimum mine tunnel; Mechanical parameters;
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