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Experience of the Application of a Rock Cracking Method Using Steam Pressure to Tunnel Excavation  

Kim, Duk-young ((주)홍림)
Kim, Sun-Woong ((주)홍림 기술영업부)
Publication Information
Explosives and Blasting / v.35, no.2, 2017 , pp. 1-8 More about this Journal
Abstract
In this study, the characteristics of a new rock cracking method using steam pressure are briefly presented. The rock cracking method was originally developed as a means to decrease the ground vibrations from underground rock excavations. The validation tests were also conducted by applying the method to an actual rock tunnel under construction. The ground vibrations were measured in the vicinity of the test site. The measured vibration results were compared with the values predicted by an attenuation equation, which had been proposed by a company in Japan. Also, a simple cost assessment for the method was conducted to demonstrate its cost effectiveness in underground tunnel excavations.
Keywords
Steam pressure; Rock cracking; Ground vibration; Tunnel excavation;
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