Naslov
Establishment of the Grohovo Landslide monitoring system

Autori
Arbanas, Željko ; Jagodnik, Vedran ; Ljutić, Kristijan ; Dugonjić Jovančević, Sanja ; Vivoda, Martina

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
2nd Project Workshop: Monitoring and Analyses for disaster mitigation of landslides, debris flow and floods. Book of Abstracts / Ožanić, Nevenka ; Arbanas, Željko ; Mihalić, Snježana ; Hideaki, Marui - Rijeka : University of RIjeka, 2011, 9-9

ISBN
978-953-6953-26-4

Skup
Second Workshop on the Monitoring and Analyses for disaster mitigation of landslides, debris flow and floods

Mjesto i datum
Rijeka, Hrvatska, 15.12.2011. - 17.12.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
landslide; monitoring system; establishment equipment; installation

Sažetak
The Grohovo Landslide, the largest active landslide along the Croatian part of the Adriatic coast, is located on the north-eastern slope of the Rječina Valley. It was noted that during 19th and 20th century a lot of instabilities on the Rječina Valley slopes were occurred. The last complex retrogressive landslide was reactivated in December 1996, after long time dormant period and about 1.0x106 m3 were moved down the slope and buried the Rječina river-bed and after initial movements, the landslide was retrogressively developed up the slope. Slip surfaces are considered to be on the contact of superficial deposits and flysch bedrock. In 2009 the Croatian-Japanese research joint project “Risk identification and Land-Use Planning for Disaster Mitigation of Landslides and Floods in Croatia” was initiated and the Grohovo Landslide was chosen as a pilot area for monitoring system development. A comprehensive monitoring system was designed consisted of geodetical and geotechnical monitoring. Installation of monitoring equipment started in March 2011 and will be complete to the end of 2011. Integrated monitoring system will be consisted of surveying system using GPS and robotic total station, so as geotechnical monitoring using pore pressure gauges, inclinometers, extensometers and seismographs. The establishment of monitoring system was carried out in stages according delivery purchasing and delivery of monitoring equipment. Installation of inclinometer casing and pore pressure gauges was started in March 2011 and foundations and poles for long span extensometers were finished in May 2011. The main part of monitoring equipment was installed in July 2011, when complete geodetical monitoring equipment was delivered and installed. After monitoring system starting up, some problems in equipment operating were observed and equipment re-adjustment was carried out until the end of November 2011. Installation of long span extensometers was completed in same time. In next stages of monitoring equipment installation, the short span extensometers, vertical extensometers, pore pressure gauges data loggers and pluviometer will be installed. In the automated integrated monitoring system until December 2011 are included observation of geodetic prisms with robotic total station and system of 10 GPS rovers (including master unit). Rest of equipment will be included after equipment connection in unique system. In this paper we will described the planned monitoring system so as details from monitoring equipment installation in detail.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

POVEZANOST RADA