20.500.12556/RUL-179662 Vpliv kraških pojavov na tehnologijo gradnje predora Beka (T2) na drugem tiru med Divačo in Koprom magistrsko delo Impact of Karst Phenomena on Construction Technology of Beka Tunnel (T2) on Second Railway Track between Divača and Koper master's thesis Gradnja predorov v kraškem okolju predstavlja izjemno zahteven inženirski izziv zaradi izrazite heterogenosti kamninskega masiva, nepredvidljivega pojavljanja kraških votlin ter kompleksnih hidrogeoloških razmer. Uspešna izvedba takšnih projektov zahteva stalno in celovito spremljanje geoloških, geofizikalnih in geotehničnih razmer ter sposobnost hitrega prilagajanja tehnologije gradnje ob odkritju nepredvidenih kraških pojavov. Ključnega pomena je pravočasno in usklajeno delovanje vseh vpletenih strok – geologov, krasoslovcev, hidrogeologov, geotehnikov, nadzora in izvajalca – saj le interdisciplinaren pristop omogoča varno, časovno učinkovito in okolijsko sprejemljivo gradnjo. Ob odkritju kraškega pojava se tehnologija gradnje praviloma spremeni: izkop se lahko začasno ustavi ali omeji, uvedejo se dodatni raziskovalni in zaščitni ukrepi, prilagodi se način podpiranja ter izvedejo obvodi za ohranitev naravnega režima pretakanja podzemne vode. Posebna pozornost je namenjena preprečevanju dviga hidrostatskih tlakov, zaščiti kraških vodonosnikov ter ohranjanju občutljivega kraškega okolja. Hkrati je za zmanjševanje časovnih zastojev in dodatnih stroškov nujna ustrezna organizacija gradbišča, ki omogoča nadaljevanje del na drugih izkopnih fazah ali napadnih točkah, kadar je napredovanje v kaloti začasno omejeno. Magistrska naloga obravnava navedena izhodišča gradnje predorov v kraškem okolju na primeru gradnje Drugega tira železniške proge Divača–Koper, s poudarkom na predoru Beka in odkritju kraškega pojava 2TDK-025. Na konkretnem primeru je prikazan vpliv kraških pojavov na spremembo tehnologije gradnje, potek odločanja o primerni vrsti sanacijskih del, izvedba začasnih in trajnih sanacijskih ukrepov. V nalogi je poudarjen pomen pravočasne detekcije kraškega in ustreznega tehničnega odziva projektanta, inženirja in izvajalca. Naloga potrjuje, da je gradnja predorov v kraškem okolju lahko uspešna le ob stalnem nadzoru, prilagodljivi tehnologiji gradnje ter doslednem upoštevanju naravovarstvenih in hidrogeoloških zahtev. Tunnel construction in karst environment represents an exceptionally demanding engineering challenge due to the pronounced heterogeneity of the rock mass, the unpredictable occurrence of karst cavities, and complex hydrogeological conditions. The successful execution of such projects requires continuous and comprehensive monitoring of geological, geophysical, and geotechnical conditions, as well as the ability to promptly adapt construction technology when unforeseen karst phenomena are encountered. Timely and coordinated cooperation among all involved disciplines—geologists, karstologists, hydrogeologists, geotechnical engineers, supervisory staff, and contractors—is essential, as only an interdisciplinary approach can ensure safe, time-efficient, and environmentally acceptable construction. When a karst feature is discovered, the construction technology typically needs to be modified: excavation may be temporarily halted or limited, additional investigation and protective measures are introduced, the support system is adapted, and bypass systems are implemented to preserve the natural regime of groundwater flow. Particular attention is given to preventing the increase in hydrostatic pressures, protecting karst aquifers, and preserving the sensitive karst environment. At the same time, minimizing delays and additional costs requires appropriate site organization, enabling construction activities to continue in other excavation phases or working faces when advancement in the tunnel crown is temporarily restricted. This master’s thesis examines principles of tunnel construction in karst environment through the case study of the Second Track railway project Divača–Koper, with a focus on the Beka Tunnel and the discovery of the karst feature 2TDK-025. The case study demonstrates the impact of karst phenomena on changes in construction technology, the decision-making process for the choice on remedial measures the implementation of temporary and permanent remediation measures. It is highlited in the thesis the importance of timely detection and an appropriate technical response of designer, enginere and contractor. The thesis confirms that successful tunnel construction in karst environments is only achievable through continuous monitoring, adaptable construction technology, and strict compliance with nature conservation and hydrogeological requirements. Kraške votline tehnologija gradnje predorov detekcija začasna sanacija trajna sanacija. Karst phenomena tunnel construction technology detection temporary remediation permanent remediation. true false false S. Hidanović Slovenski jezik Angleški jezik Magistrsko delo/naloga 2026-02-19 09:00:06 2026-02-19 09:00:18 2026-08-12 04:02:55 0000-00-00 00:00:00 2026 0 Ljubljana 0 Ljubljana XV, 69 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 622 113343 269438467 28553.pdf 28553.pdf 1 1A41F960B2AA4B3F39A4B6C2A109112D 863dbd6e4aba98c954d225a83369a98b76fa7f15e7cf0178ac902de6c496204a c880dfa9-0d68-11f1-a1ba-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=228422 Naravoslovnotehniška fakulteta 0 0 0