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Chapter 3: Stresses around Underground Openings | Rock Mechanics
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Stresses around Underground Openings
ROCK MECHANICS AND ENGINEERING (ENCE 373)
Chapter 3: Stresses around Underground Openings
8 Hours | 10 Marks

Stresses around Underground Openings

About this Chapter

This chapter examines the complex behavior of rock stress when an underground opening is created. Topics include Kirsch equations, excavation shapes, tunnel boundary stresses, and numerical modelling.

Syllabus: (10 Marks)

3.1 Origin of rock stress & 3.2 Stresses surrounding underground opening, Kirsch equation

3.3 Circular hole in an elasto-plastic infinite medium & 3.4 Plastic behavior around tunnels

3.5 Excavation shape and boundary stress & 3.6 Stress distribution due to fractured zone

3.7 Tunneling in stratified and blocky rock & 3.8 Rock fractures and scale/size effect

3.9 Numerical modelling & 3.10 Effect of width to height (W/H) ratio

3.11 Tunneling in weak rock & 3.12 Effects of planes of weakness

Notes by Asst. Prof Bharat Bahadur Dhakal

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© Asst. Prof Bharat Bahadur Dhakal, Pulchowk Campus

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