Essays about: "Tunnels information"

Showing result 1 - 5 of 15 essays containing the words Tunnels information.

1. 1. Rock Wedge Stability Assessment : A Comparative Analysis of Limit Equilibrium and Discrete Element Methods

   University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

   Author : Vilma Nordh; [2024]
   Keywords : Numerical modelling; wedge stability; 3DEC; UnWedge;

   Abstract : Rock wedge stability is a common concern in underground excavations. Since the wedge stability influences the support design, it is important to use a wedge stability analysis method that can capture factors like excavation geometry, joint parameters and properties, rock mass properties, rock cover, and stress field as accurately as possible. READ MORE

3. 2. Robust Graph SLAM in Challenging GNSS Environments Using Lidar Odometry

   University essay from Linköpings universitet/Reglerteknik

   Author : Jesper Sundström; Alfred Åström; [2023]
   Keywords : graphslam; graph slam; graph; slam; automatic; control; robust; DCS; RRR; lidar odometry; gnss;

   Abstract : Localization is a fundamental part of achieving fully autonomous vehicles. A localization system needs to constantly provide accurate information about the position of the vehicle and failure could lead to catastrophic consequences. READ MORE

4. 3. The Impact of Fracture Orientation on the Choice of Grout Fan Geometry - a Statistical Analysis

   University essay from KTH/Jord- och bergmekanik

   Author : Fredrik Osterman; [2019]
   Keywords : Rock Fissure Grouting; Grout Fan Geometry; Geology; Discrete Fracture Network; Sprickinjektering i berg; skärmgeometri; geologi; diskreta spricknätverk;

   Abstract : Water ingress into rock tunnels is a problematic phenomenon – especially in urban areas – as a lowered groundwater table may cause harmful settlements. Furthermore, too much ingress can be an incentive for the environmental court to halt the tunnel process, in order to protect the nature as part of a national interest. READ MORE

5. 4. Structural Health of a concrete tunnel lining under complex in situ loading

   University essay from KTH/Bro- och stålbyggnad

   Author : LEONARDO DALLA ROSA; [2019]
   Keywords : ;

   Abstract : Supporting structures were designed for a utility tunnel in hard rock which was to be intersectedby some road tunnels. With the intersections involving partial overlapping between the idealcross-sections, a concrete lining and post-tensioned steel cables were added to support theutility tunnel prior to the excavation of the road tunnels. READ MORE

6. 5. Predictive Model for Traffic Control in Underground Mines

   University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

   Author : Claes Andersson; [2019]
   Keywords : underground; mine; tunnel; traffic; control; management; collision avoidance; single track; velocity; prediction; distribution;

   Abstract : Due to the nature of tunnels, a driver in an underground mine may find themselves driving without much vision of the road up ahead. The tunnels usually allow for traffic in both directions but are often only wide enough for a single vehicle. READ MORE