The project in five facts.
Challenge, approach and results.
The diploma thesis describes and analyses the construction of the Huda Luknja cycling route between Velenje and Mislinja, specifically the Legi Kamen tunnel, which is one of the structures on the aforementioned cycling route and the only tunnel requiring new construction. In the final part of the diploma thesis, the author presents the results of research work in which he compared the execution of tunnel excavation using blasting with the hypothetical execution of tunnel excavation using mechanical breaking. The results demonstrate that in order to determine the more economically appropriate working method, it is necessary to carry out a cost and time analysis of the work.
Solution and Method
The diploma thesis describes and analyses the construction of the Huda Luknja cycling route between Velenje and Mislinja, specifically the Legi Kamen tunnel, which is one of the structures on the aforementioned cycling route and the only tunnel requiring new construction. The main topics of the diploma thesis are the execution of tunnel excavation and the primary support of the Legi Kamen tunnel. In the first part, the author presents the procedures for commencing work on the Legi Kamen tunnel construction project.
First, it is necessary to select a professional and homogeneous working team with the necessary personnel for the smooth execution of works. The planning team then prepares a schedule and financial plan for the work, which must be submitted to the client. To facilitate the execution of works, plans for labour force, materials and mechanisation are also prepared.
Before commencing work, all preparatory works must be carried out, among which the most extensive are the preparation and organisation of the construction site with all facilities, installations and equipment. The construction site must be prepared in accordance with the Health and Safety at Work Act and the Environmental Protection Act, and these laws must then be observed throughout the entire construction process. In addition to the above, tunnel construction requires compliance with additional regulations and laws due to blasting operations (the Mining Act and the Explosives Act).
The Legi Kamen tunnel was built using the New Austrian Tunnelling Method. In the continuation of the diploma thesis, the author presents the aforementioned method in theory and using the example of the Legi Kamen tunnel. He describes in detail the support types that were determined and used for the primary support of the tunnel, and the materials required for their execution.
Results
In the final part of the diploma thesis, the author presents the results of research work in which he compared the execution of tunnel excavation using blasting with the hypothetical execution of tunnel excavation using mechanical breaking. The results demonstrate that in order to determine the more economically appropriate working method, it is necessary to carry out a cost and time analysis of the work. The greatest difference between the two working methods in favour of the blasting method was in the hardest rock category, whilst the smallest difference was in the softest rock category.
He also carried out an analysis of steel consumption during the installation of rock bolts and compared them with other types of steel arches used in mining. It was found that the use of rock bolts saved 65% of the steel that would have been consumed with the installation of classic TH29 steel arches, thereby ensuring a more economical and environmentally friendly working method.
Module, programme and stories.
Your diploma project for a real company.
A diploma thesis at Academia solves a challenge from a company – often the one where you do your 800 hours of placement. Read about the Gradbeništvo module or book a consultation.