Stability Analysis of Mine Drift for Explosive Welding
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Explosive welding was planed in a closed drift of a mine for its reuse. In this study, we analyzed the stabilization of roof and pillar which were expected to be affected by overpressure experienced during the continual explosive welding. Three equations, normal equation, CONWEP and DDESB, were used for the estimation of overpressure. The investigation shows that the continual use of the explosive welding in a drift may result in considerable damage on the drift.
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Jang, Hyong Doo ; Han, K.; Kim, W.; Yang, H.; Jang, M. (2010)Explosive welding is planned in an abandon drift which is approximately 10m radius and 9m height. According to the plan the amount of explosive, ANFO will be up to 1000kg per stage. Before the explosive welding experiment, ...
Jiang, M.; Huang, B.; Jiang, Z.; Lu, Chunsheng ; Dai, L. (2015)This paper reports the development of a thick-walled cylinder explosion technique to weld a typical Zr-based bulk metallic glass (Vitreloy 1 (Vit 1)) to a commercial Cu-based crystalline alloy (brass). It is shown that a ...
Jang, Hyong Doo ; Yang, H.; Ko, Y.; Kim, S.; Moon, H. (2011)Concussion shots were conducted for SS400, a general structural steel, and SM490, a structural steel for welding, using TNT, which is used as a standard explosive. The ability to cut the steels was compared for different ...