INŽENJERSKOGEOLOŠKE ZNAČAJKE KLIZIŠTA MLIJA I NJIHOV UTJECAJ NA INŽENJERSKE OBJEKTE (OMIŠ, JUŽNA HRVATSKA)

In order to design the by-pass road of the city of Omiš which will partially he founded on the landslide Mlija and for the safety of foundations of houses, detail subsurface exploration especially engineering-geological surveys, geophysical surveys, boring and laboratory tests of the sliding material were conducted. Obtained results are presented in this paper. Due to numerous damages of roads, walls and houses built in the area of Mlija and Borak, the possibility of construction in the area was discussed and the foundation method proposed. In order to obtain an overview of circumstances, constant monitoring of variations of the water table level and velocity of the moving material has been proposed.Za potrebe projektiranja obilaznice Omiša koja će dijelom biti temeljena na klizištu Mlija te za sigurna temeljenja obiteljskih kuća na toj padini, provedena su detaljna istraživanja, posebice inženjersko-geološko kartiranje, geofizička istraživanja, istraživačko bušenje i laboratorijska ispitivanja materijala koji klizi, U ovom radu prikazani su postignuti rezultati, a zbog brojnih oštećenja na prometnicama, zidovima i stambenim zgradama izvedenim na području Mlija i Borak, raspravljena je mogućnost gradnje na odnosnom terenu s prijedlogom načina temeljenja. Uz to, za dobivanje cjelovite slike stanja, predloženo je stalno praćenje kolebanja razine podzemne vode i brzine kretanja materijala

Investigations and design solution for the Stupe hydropower tunnel

Opisani su opsežni istražni radovi na lokaciji hidrotehničkog tunela Stupe u Splitu koji su poslužili za izradu projektne dokumentacije. Rezultati istraživanja bili su osnova za klasifikaciju i kategorizaciju stijenske mase. Tako određene geotehničke karakteristike bili su odlučujuće pri odabiru trase tunela i za projektiranje podgradnog sustava koji je predviđen kao tunelska obloga. Na kraju su navedeni podaci o tijeku iskopa tunela pri čemu su opisane i karakteristike tla.Authors describe extensive investigations on the site of the Stupe hydropower tunnel in Split which were underaken in order to enable preparation of design documents. The investigation results were the basis for the rock mass classification and categorization, which is also presented in the paper. Geotechnical properties defined in this way were of crucial significance for the selection of the tunnel route and for designing the support system for which tunnel lining has been adopted. Finally, a brief account is given of the construction process, including data on soil properties

ENGINEERING GEOLOGICAL AND GEOTECHNICAL CHARACTERISTICS OF THE PLOČE BY-PASS ROAD

Obilaznica Ploča bit će izvedena dijelom na vapnencima, a dijelom na glinovito-prašinasto-pjeskovitim sedimentima. S ciljem postizanja pouzdanih rezultata za sigurno temeljenje prometnice i izvedbu objekata na njoj, obavljena su terenska i laboratorijska istraživanja čiji se rezultati prikazuju u ovom radu. Razredba vapnenaca učinjena je prema GSI, a značajke glinovito-prašinasto-pjeskovitih sedimenata određene su u laboratoriju i poslužili su kao podloga računskom modelu za geostatički proračun i temeljenje.The Ploče by-pass road will be constructed partly in limestones and partly in clayey-silty-sandy sediments. In order to obtain reliable data for purposes of safe foundation technique for the road and respective structures, field and laboratory investigations were performed. The results are given in this paper. The limestones were classified based on Geological Strength Index (GSI) while the properties of clayey-silty-sandy sediments were determined in the laboratory. The obtained results were used as a base for geostatic calculations by a numerical model and for the design of foundations

ENGINEERING GEOLOGICAL CHARACTERISTICS OF THE ROAD SOLIN - KLIS (DALMATIA, CROATIA)

Istraživanjima u »intaktnom« terenu, kao i na izvedenim kosinama usjeka i zasjeka, u temeljnim jamama objekata i u tunelima, određene su inženjerskogeološke i osnovne tektonske značajke senonskih vapnenaca, eocenskog fliša, prominskih breča i brečo-konglomerata, te oligocenskih slabo sortiranih breča, na trasi poluautoceste Solin-Klis (Dalmacija, Hrvatska). Laboratorijskim ispitivanjima na velikom broju uzoraka stijena utvrđeni su rasponi njihovih osnovnih fizikalnih i mehaničkih značajki unutar pojedinih inženjerskogeoloških cjelina. Rezultati laboratorijskih ispitivanja uspoređeni su sa svojstvima stijenskih masa u cjelini procijenjenim primjenom RMR-klasiflkacije stijena i rezultata mjerenja brzine širenja uzdužnih seizmičkih valova. Ukazano je na mogući istovjetan pristup i kod izrade Osnovne inženjerskogeološke karte Republike Hrvatske.The research, that has been done both on the »intact« terrain and on the opened cuts and discontinuities, and which has been carried on in the basic caves of the object, as well as in the tunnels; has verified the engineering geological and basic tectonic characteristics of Senonian limestones, Eocene flysch, the Promina breccias and breccia-conglomerates, as well as Oligocene poorly sorted breccias, on the route of semi-highway Solin-Klis (Dalmatia, Croatia). The lab analyses, of the great number of the rock samples, have brought out the parametres of their basic physical and mechanical features within a particular engineering geological unit. The results, thus obtained, have been compared to the qualities of the rock structure block as a whole, and had been previously evaluated by applying RMR-classification of the rocks, and the results of the measured velocities of the longitudinal waves. It has been pointed out that similar procedure may be applied in the publication of General Engineering Geological Map of the Republic of Croatia

ENGINEERING GEOLOGICAL AND STRUCTURAL GEOLOGICAL CHARACTERISTICS USED TO PROVE THE STABILITY OF HIGH CUTS IN COMPACT ROCKS ON THE ROAD MC-11, SOLIN-KLIS

Opisane su inženjerskogeološke značajke stijena, nužne kao podloga za računanje i dokaz stabilnosti visokih zasjeka u čvrstim razlomljenim stijenama. Mjerenjem i analizom pukotinskih sustava, dobijeni su podaci za strukturno-geološku obradu. Uz pretpostavljeni i simulirani ravni lom utvrđen je nagib s kojim bi kosine zasjeka bile stabilne.The paper deals with the engineering geological characteristics of the rock massif in charge to compute and provide the stability of high cuts in solid fractured rocks. The data for the structural geological processing have been obtained by measuring and analyzing the system of fissures. In addition to the supposed and simulated straight fracture the maximum slope of the high cut has been determined considering additional forces which were introduced into the rock mass

ENGINEERING GEOLOGY PROPERTIES OF \u27KONJSKO\u27 TUNNEL

Istraživačkim radovima za potrebe projektiranja tunela «Konjsko» s dvije tunelske cijevi na autocesti Split-Zagreb, dobiveni su svi relevantni podaci o značajkama stijena i terena temeljem kojih su izrađeni prognozni inženjerskogeološki uzdužni profili. Zapadni portali tunela su locirani u naslagama zgnječenih i dijelom dinamički metamorfoziranih lapora eocenskog fliša, a istočni u naslagama senonskih vapnenaca. Kontakt flišnih lapora i vapnenaca je navlačan. Početkom iskopa tunela počelo je i redovito registriranje svih pojava i stanja stijenske mase nakon svakog miniranja, što je rezultiralo stvarnim uzdužnim inženjerskogeološkim profilima i poprečnim profilima čela. Odstupanja od prognoziranog stanja je bilo, a nastala su zbog nemogućnosti posve točnog određivanja nagiba navlačne plohe koja se nalazila plitko ispod nivelete tunela i pojave poprečnih rasjeda koji su raskinuli navlaku i uzdignuli lapore u dio tunelskog profila. Podaci prikupljeni prije i tijekom izvedbe tunela upotpunili su spoznaje o geološkoj građi šireg okoliša i fizičko-mehaničkim značajkama naslaga.Investigation works for the design of the Konjsko Tunnel with two pipes, part of the Split-Zagreb Motorway, provided relevant data on rock mass and soil properties for construction of the prognose engineering-geological longitudinal sections. West tunnel portals are situated in tectonically deformed and partly dynamically metamorphosed Eocene flysch marls, while east ones are located in Senonian limestones. There is an overthrust contact between flysch marls and limestones. With the beginning of the excavations, rock mass characteristics were regularly registered after each blasting and actual longitudinal engineering-geological cross-sections were constructed as well as cross-sections of the excavation face. There were some differences between prognosticated and registered sections since it was infeasible to accurately determine the dip of the overthrust plane that was at shallow depth below the tunnel grade line and also due to the occurrence of transversal faults that intersected the overthrust. Data collected before and during the tunnel construction complemented the knowledge on geological structure of the surroundings and physical-mechanical characteristics of strata

ENGINEERING-GEOLOGICAL CHARACTERISTICS OF THE LANDSLIDE MLIJA AND THEIR IMPACT ON ENGINEERING STRUCTURES (OMIŠ, SOUTHERN CROATIA)

In order to design the by-pass road of the city of Omiš which will partially he founded on the landslide Mlija and for the safety of foundations of houses, detail subsurface exploration especially engineering-geological surveys, geophysical surveys, boring and laboratory tests of the sliding material were conducted. Obtained results are presented in this paper. Due to numerous damages of roads, walls and houses built in the area of Mlija and Borak, the possibility of construction in the area was discussed and the foundation method proposed. In order to obtain an overview of circumstances, constant monitoring of variations of the water table level and velocity of the moving material has been proposed

ENGINEERING GEOLOGICAL CHARACTERISTICS OF THE ROAD SOLIN - KLIS (DALMATIA, CROATIA)

The research, that has been done both on the »intact« terrain and on the opened cuts and discontinuities, and which has been carried on in the basic caves of the object, as well as in the tunnels; has verified the engineering geological and basic tectonic characteristics of Senonian limestones, Eocene flysch, the Promina breccias and breccia-conglomerates, as well as Oligocene poorly sorted breccias, on the route of semi-highway Solin-Klis (Dalmatia, Croatia). The lab analyses, of the great number of the rock samples, have brought out the parametres of their basic physical and mechanical features within a particular engineering geological unit. The results, thus obtained, have been compared to the qualities of the rock structure block as a whole, and had been previously evaluated by applying RMR-classification of the rocks, and the results of the measured velocities of the longitudinal waves. It has been pointed out that similar procedure may be applied in the publication of General Engineering Geological Map of the Republic of Croatia (the paper is published in Croatian)