am analysing drainage tunnels in Hong Kong within zones of Granodiorite and Tuff rock mass.The rock mass has very low cohesion values and friction angle are 30-35 degrees. Deformation modulus are too high (65-70 GPa), so we are expecting very low deformations. Hydrofracture test data indicates...
I am analysing drainage tunnels in Hong Kong within zones of Granodiorite and Tuff rock mass.The rock mass has very low cohesion values and friction angle are 30-35 degrees. Deformation modulus are too high (65-70 GPa), so we are expecting very low deformations. Hydrofracture test data indicates...
I am a first time user of PLaxis2D, I like to use for solutions of tunnelling problems in both hard and soft rocks. Can anybody send some sample problems so I can be familiar with it much
We are attempting to interpret the interactions between excavations of 7.0m dia main tunnel with a 4.0m dia vertical shaft that also connects to an inclined tunnel of same dia. My basic interest area is 3d from main tunnel face and I am not considering the total inclined tunnel length. I assumed...
In Tunnelling problems we tell about deep tunnels and shallow tunnels. are there any definite criteria of depth below ground surface where it can be identified as deep/shallow?
Dear All,
In Numerical analysis of Tunnels, seismic loading is applied at the final stage of construction.
Is it necessary to apply at intermediate stages of excavation to check conditions such as earthquake occurs during construction.
Generally in deep ground tunnels earthquake loadings are...
