Shotcrete and backfill design in underground structures

The stability of underground engineering structures may be possible by supporting the cavities opened in the structures rapidly.In these days concrete support systems has been commonly begun to establish the stability in the underground mines and specially in the galleries opened in the tunnel buildings. These systems find application field as shotcrete and Cemented rockfill.Together with the developments in shotcrete and filling technology the supporting of the cavities in the underground have been executed more dependable. With this innovation,some difficulties specially in metal mining, in the establishment of tunnel structures and in the setting of the stability have been passed over .Holding of underground structures in a stable form is a cost factor.Designing of precautions tobe taken to hold these structures stable is an optimization process. The aim of this process is to provide the most dependable system by the most economical way for providing stability. For this aim to provide the stability in the underground structures may be possible by finding The most suitable mixture design componenets of shortcrete and filling by testing in lab conditions before underground applications. To determine the suitable concrete mixture is pretty important both for security of underground structures and the economy of support system.