Underground Space Technology

Week 1-2: Rock Engineering Basics: rocks and rock masses, physical and mechanical properties, classification and failure criteria, planning of and exploration for various underground construction projectsWeek 3: Stereographic projection method, principle and its application in underground excavation designWeek 4-7: In-situ stress, elastic stress distribution around tunnels, stress distribution for different shapes and under different in-situ stress conditions, Greenspan method, design principles, multiple openings, openings in laminated rocks, elasto-plastic analysis of tunnels, Daemen’s theoryWeek 7-8: Application of rock mass classification systems, ground conditions in tunneling, analysis of underground openings in squeezing and swelling ground, empirical methods, estimation of elastic modulus and modulus of deformation of rocks, uni-axial jacking /plate jacking tests, radial jacking and Goodman jacking tests, long term behaviour of tunnels and caverns, New Austrian tunneling Method (NATM), Norwegian Tunneling Method (NMT), construction dewateringWeek 9-11: Rock mass-tunnel support interaction analysis, ground response and support reaction curves, Ladanyi’s elasto-plastic analysis of tunnels, design of various support systems including concrete and shotcrete linings, steel sets, rock bolting and rock anchoring, combined support systems, estimation of load carrying capacity of rock bolts.Week 12: In-situ stress, flat jack, hydraulic fracturing, single and multi-point bore hole extensometers, load cells, pressure cell. Instrumentation and monitoring of underground excavations, during and after construction, various case studies.