Rock bolts for Tunnels and underground excavations

Rock bolts are tensioned once the anchorage is attained to actively set up a compressive force into the surrounding rock.

18/dic/2015 09:37:30 sinorockzqq Contatta l'autore

Questo comunicato è stato pubblicato più di 1 anno fa. Le informazioni su questa pagina potrebbero non essere attendibili.

 

Tunnels and underground excavations, horizontal underground passageway produced by excavation or occasionally by nature’s action in dissolving a soluble rock, such as limestone. A vertical opening is usually called a shaft. Tunnels have many uses: for mining ores, for transportation—including road vehicles, trains, subways, and canals—and for conducting water and sewage. Underground chambers, often associated with a complex of connecting tunnels and shafts, increasingly are being used for such things as underground hydroelectric-power plants, ore-processing plants, pumping stations, vehicle parking, storage of oil and water, water-treatment plants, warehouses, and light manufacturing; also command centres and other special military needs.

Rock bolts are tensioned once the anchorage is attained to actively set up a compressive force into the surrounding rock. This axial force increases the shear capacity and is generated by pre-tensioning of the bolt. The system requires a bond length to enable the bolt to be tensioned. In essence, rock bolts start to support the rock as soon as they are tensioned and the rock does not have time to start to move before the rock bolt becomes effective.

Rock bolts are widely used in Tunnels and underground excavations.Sinorock rock bolt systems are built from top quality materials guaranteeing high strength and durability to stand up to the toughest environments.Sinorock anchor bolt systems are the unsung heroes of most fall protection systems,often overlooked but critical components because they securely attach your system to the anchorage.

http://www.sock23.com/forums/topics.aspx?ID=522

blog comments powered by Disqus
Comunicati.net è un servizio offerto da Factotum Srl