Expertise & Experiences of Numerical Modeling

Division of NIRM in HYDro-Power Sector

Discontinuum Modeling of underground excavations – a

Perspective

Discontinuum Modeling of underground excavations – a

Perspective

Discontinuities like joints, faults, shear zones can be modeled explicitly

Model displacements and rotations of discrete bodies

Can simulate loss of contact due to slip, separation and rotations of the bodies and establishes new contacts

Discrete element modeling capabilities AT NIRM

Discrete element modeling capabilities AT NIRM

Discontinuum Behavior in 2D & 3D using discrete element models- UDEC and 3DEC

Non linear material and joint behavior Coupled fluid flow and mechanical behavior Elasto-plastic material behavior Model supports, rock bolts,cable supports

and SFRS explicitly Thermo-Mechanical behavior of rock mass

Projects successfully completed

Analysis of Power House Cavern - Sardar Sarovar Narmada Nigam (SSNNL)

Analysis of Right Bank Training Wall -SSNNL

Stress Analysis of UG Power House Complex - Srisailam, AP

Analysis of UG Power House - Nathpa Jhakri Hydro-power Project H.P.

Analysis of Draft Tube Tunnels - SSNNL Analysis of UG Power House - PYKARA, TN

Overview of the Expertise

Stability Analysis of Underground Structures

Support Design including Rock Bolts and SFRS

Rock Liner Interaction Analysis of Pressure shafts

Liquifaction Analysis Stability Analysis of Earth Dams and

Slopes