Geomehanska analiza stabilnosti visokovodnega razbremenilnika HE Brežice

diplomsko delo univerzitetnega študijskega programa

Mateja Škrabar (Author), Stanislav Škrabl (Mentor), Borut Macuh (Co-mentor)

Abstract

Diplomska naloga v uvodnem poglavju obravnava opredelitev poplavne in potresne ogroženosti območja RS, ki izhaja iz geoloških, krajinskih, hidroloških in meteoroloških značilnosti ozemlja pod Alpami na prehodu iz Panonske nižine do Jadranskega morja. V nadaljevanju je podan pregled številnih večjih zemeljskih in drugih pregrad na ozemlju RS, ki so namenjene zagotavljanju poplavne varnosti, hidro-energetiki, namakanju in drugim ciljem. Večje pregrade in akumulacije predstavljajo večje posege v okolje ter tudi potencialno nevarnost za ljudi in materialne dobrine, v kolikor je njihova zanesljivost potencialno ogrožena. Zato vse večje pregrade in akumulacije praviloma sodijo v geotehnično kategorijo III, kjer je za projektiranje, izvedbo in obratovanje potrebno upoštevati bolj rigorozne projektne zahteve, kot veljajo za običajne objekte v gradbeni praksi, ki jih določa veljavni standard SIST EN 1997. Pri načrtovanju visokih pregrad v RS praviloma kot alternativni predpis upoštevamo priporočila ICOLD, ki so bolj stroga od predpisov, ki veljajo za gradbene in geotehnične objekte običajne zahtevnosti v RS. V diplomskem delu je podrobno prikazana zasnova, načrtovanje in delovanje visokovodnega razbremenilnika HE Brežice. Slednji predstavlja enega izmed pomembnejših objektov HE Brežice, ki se nahajajo v zelo zahtevnih geoloških, seizmičnih in hidroloških razmerah. Lokacija visokovodnega razbremenilnika je na obrobju sinklinale, globine do 120.0 m, ki je zapolnjena s prepustnimi pliokvartarnimi naplavinami. Z zahtevnimi elasto-plastičnimi in plasto-dinamičnimi analizami sodelovanja med akumulirano vodo, betonsko konstrukcijo visokovodnega razbremenilnika, tesnilno zaveso in heterogeno prepustnimi pliokvartarnim prodnim zasutjem je dokazano izpolnjevanje vseh projektnih zahtev visokovodnega razbremenilnika tako z vidika varnosti in zanesljivosti oz. stabilnosti pri uporabi, zagotavljanja dovolj majhnih vodnih izgub ter tudi izpolnjevanja pogojev stabilnosti in vodotesnosti objekta pri obremenitvah s projektno in največjo pričakovano potresno obtežbo v projektni življenjski dobi objekta.

Keywords

geotehnika;zemeljske pregrade;akumulacije;stabilnost;vodotesnost;diplomske naloge;

Data

Language:	Slovenian
Year of publishing:	2016
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
Publisher:	[M. Škrabar]
UDC:	624.13:627.824(043.2)
COBISS:	20473110
Views:	949
Downloads:	89
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Geomechanical stability analysis of flood overflow Hydro - electric power plant Brežice
Secondary abstract:	The introductory part of the thesis encompasses a determination of flood and seismic hazards in the Republic of Slovenia arising from geological, landscape, hydrologic and meteorological characteristics of the territory beneath the Alps at the transition between the Pannonian Basin and the Adriatic Sea. The following is an overview of several bigger earthfills and other barriers in the territory of the RS intended to provide flood protection, hydropower, irrigation and other. Large barriers and embankment represent large scale activities affecting the environment, as well a potential source of harm for people and material assets in the event that the security of such facilities is potentially at risk. All large barriers and embankments therefore fall into geotechnical category III, which means that more rigorous projects requirements apply when it comes to design, implementation and operation than for normal facilities in construction practice, stipulated by the applicable standard SIST-EN-1997. When designing large barriers in the Republic of Slovenia, the ICOLD recommendations are normally complied with; these recommendations are much stringent than rules that need to be complied within the Republic of Slovenia when dealing with construction and geotechnical works of average complexity. The thesis includes a detailed presentation of the design, planning and operation of the flood overflow in the hydro-electric power plant Brežice. The latter represents one of the most important facilities of the Brežice hydro-electric plant, located in the extremely demanding geological, seismic and hydrological conditions. The flood overflow is located at the margin of the syncline, vertical depth up to 120.0 m, which is filled with pass-through Plioquaternary deposits. Demanding elasto-plastic and plasto-dynamic analyses of cooperation among accumulated water, concrete construction of the flood overflow grouted base, and heterogeneous pass-through Plioquaternary shingle filling were made in order to establish compliance with all the project requirements when it comes to security and stability of the flood overflow when in use, provision of sufficiently small water losses, as well as compliance with the stability and water tightness requirements of the facility at high loads with project, as well as the maximum expected seismic load in the project life cycle of facility.
Secondary keywords:	geotechnics;dams;accumulation;stability;impermeability;
URN:	URN:SI:UM:
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Mariboru, Fak. za gradbeništvo, prometno inženirstvo in arhitekturo
Pages:	VIII, 62 f., [5] zganj. pril. z načrti
ID:	9166846