Sandvik DT 821-SC boom electro-hydraulic jumbo is for sale in Bulgaria
...Sandvik describes it as "Sandvik DT821-SC is a two boom electro-hydraulic jumbo for fast and accurate drilling in tunneling and cavern excavation. The hydraulic controlled drilling system wi...Serbia “Jaroslav Cerni” Institute: Application of the pressure grouting in the hydraulic tunnels
Application of the pressure grouting in the hydraulic tunnels Vladimir Andjelkovic, Zarko Lazarevic, Velim...line 12 May 2013. - The original criterion of prestressing used in hydraulic concrete tunnel linings. - A...
cover tunnel photo by: Matt Brown from London, England / CC BY
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