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An Experimental Study on the Bulking Factor of Rock Mass for Subsidence Behavior Analysis  

Lee, Hee-Joong (강원대학교 공과대학 지구시스템공학과)
Jung, Yong-Bok (한국지질자원연구원 지반안전연구부)
Choi, Sung-O. (강원대학교 공과대학 지구시스템공학과)
Publication Information
Tunnel and Underground Space / v.18, no.1, 2008 , pp. 33-43 More about this Journal
Abstract
The techniques for measuring the bulking factor of rock mass in subsidence area have never been well known all over the world. The volumetric expansion ratios obtained from blasting operation were the only way of acquiring the bulking factor of rock mass. The bulking factor of rock mass obtained from blasting operation, however, has been seldom classified in a certain criterion. Also the bulking factor of rock mass can be very dependent upon rock types. In order to overcome this limitation obtained from these reasons, the authors studied the experimental bulking factor of rock mass according to the stacking shapes as well as the overburden stresses. Gneiss, limestone and shale were chosen for testing specimens, and each bulking factor has been measured with laboratory test of applying a constant load on the fragmented rock specimens.
Keywords
Bulking factor; Subsidence;
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Times Cited By KSCI : 1  (Citation Analysis)
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