Geotechnical and Geoenvironmental Engineering
UNDERGROUND EXCAVATION I
Description
Theory/Practice
4
Instructors
Luís Carlos Ramos
Contents
1. Types of Underground Excavations
2. Underground Blasting: i) different applications for the underground excavation; ii) The different methods used in tunneling excavation depending on the characteristics and classifications of the rock masses. The NATM method;
3. Rock in Escavation. Mechanical excavation vs excavation with explosives: i) With explosives. Drilling of the tunnels in hard rock; ii) Mechanical: Different types of cutting tools. Joint use with water jet: TBM. Different types of machines and their application; Roadheaders. Comparation between transverse cutter head to longitudinal cutter head;
4. The loading and hauling systems;
5. Criteria for selection the machine;
6. Excavation productivity;
7. Economic constraints of the Roadheaders use;
8. Shaft excavation: Different techniques and equipment;
9. Geotechnical monitoring and instrumentation: general and concepts and applicabilities (tunnels, underground structures, other geotechnical structures).
Learning Outcomes
The course aims develop competences in project and design of the excavation and tunneling of rock masses.
The program content defined intend to let know the type of underground escavações that can be perform, the several methods available to the type and goal the escavation, the selection criteria of the methods in function of characteristics of the rock mass. Blast design of underground excavation.