Simulering av ventilationsbehov: vid framtida produktionsökning i Renströmsgruvan
Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Ventilation in underground mines is implied to supply oxygen, dilute respectively remove contaminants and to control the temperature together with the humidity. The most common contaminants are fumes from diesel engines and explosives. The amount of air needed to control these contaminants depends on both the amount and dimensions of the machines and blasts.Boliden AB wants to increase their yearly production in the Renström mine from 300 kton to 400 kton. An investigation is therefore needed to determine whether or not the existing main fans together with the airway system are sufficient. Required efficiency of the system is to evacuate and dilute blasting fumes to concentration levels below threshold limits within 30 minutes. Boliden AB is considering two alternative production plans for the future. One of them is to concentrate the production at upper levels of the mine at the new found ore body called Eskil. This ore body is wide and thick which makes it suitable for an open stoping excavation method. This method has higher productivity than the in Boliden more common cut and fill method. The other alternative is to continue with cut and fill operations at the depth of the mine.A model of the current mine is created in a software called Ventsim Visual 3. Measurements of air flows in the stopes and ducts are performed to increase the accuracy of the model. The effects of different alternatives for new airways are investigated in the model. The time needed to ventilate fumes is simulated at each end of the mine. A financial optimization is performed to determine the diameter of each shaft. The investment cost is calculated and the operational cost is obtained from Ventsim.
Place, publisher, year, edition, pages
2013. , 102 p.
Teknik, Boliden, Renströmsgruvan, gruvventilation, ventsim
IdentifiersURN: urn:nbn:se:ltu:diva-50006Local ID: 74d0f81d-3e85-4516-a2da-6ecc4d7c5d4aOAI: oai:DiVA.org:ltu-50006DiVA: diva2:1023359
Subject / course
Student thesis, at least 30 credits
Civil Engineering, master's level
Validerat; 20131209 (global_studentproject_submitter)2016-10-042016-10-04Bibliographically approved