Lab activities

The monitoring performed in the Kostanjek Landslide Observatory carries out analysis and research, which are aimed at enhancement of the security of citizens at the landslide area, advancement of scientifi c investigation and advancement of higher education. Observatory for the Kostanjek landslide monitoring is equipped with approximately 40 sensors for automated monitoring of movement of the Kostanjek landslide, as well as for monitoring of landslide causes, rainfall and earthquake. Various types of sensor networks are installed at the area of the Kostanjek landslide in Podsused, whose approximate size is 1 km2, and they encompass the following: (1) sensors for displacement measurement (GNSS receivers, short- and long-span wire-extensometers, vertical extensometers, inclinometer); (2) sensors for hydro-meteorological and hydrogeological measurements (rain
gauge, pore pressure gauges in boreholes, water level gauges in ells/boreholes); and (3) sensors for geophysical measurements (accelerometers). Most sensors communicate in near-real-ti me with automated data transfer to the data center located at the University of Zagreb’s Faculty of Mining, Geology and Petroleum Engineering (UNIZG-RGNF), the Department of Geology and Geological Engineering. The photograph shows central monitoring station of the Kostanjek Landslide Observatory, one of 23 locations with installed sensors.

Head of the Lab: This email address is being protected from spambots. You need JavaScript enabled to view it., Assoc.Prof, PhD

List of methods and procedures

Analytical procedure                                                                 Test method
 

 


 

 

 

 

 

 

 

Capital equipment

  Name inventory        Tech.characteristics     Application                    Image

15 GNSS receiver and antenna with Trimble software T4D

GNSS receiver Trimble NetR9 TI-2, GNSS antena Trimble Zephyr Geodetic 2

Continuous monitoring of superficial landslide movement at the 15 stabilized points. Continuous monitoring results will be applied for interpretation of landslide displacement, velocity and acceleration.


GNSS prijemnik

GNSS antena

7 sets of accelerometers (installed in boreholes at depths of 1.5 m, 20 m and 90 m) with devices for continuous recording of data and software

Colibrys JGI-SVAC 3C MEMS Accelerometer Sensor (3 pcs) modified by Hanshin Co. (Japan) for installation in borehole with water proof case and cable.


Colibrys SF3000L 3-C MEMS Accelerometer Sensor (4 pcs).


 Seismic Source DAQ3-3 3CH high fidelity digital logger, 24bits ADC, 3 channel with GPS, connector cable, clock receiver and USB memory (10 pcs).

Continuous monitoring of acceleration in the underground or at the surface using 7 accelerometers installed in boreholes at different depths at the five locations at the area of the Kostanjek landslide. Results of continuous monitoring will be applied for interpretation of ground shaking caused by earthquake and/or landslide movement.

Akcelerometar 3
Akcelerometar 1
Akcelerometar 2

Small and medium-sized equipment

  Name inventory        Tech.characteristics     Application                    Image

DIVER

Sensor for measuring the water level measuring hydrostatic pressure sensor to measure atmospheric pressure with a base station and Win-Situ software.

Continuous water level monitoring at two superficial streams at the area of the Kostanjek landslide and in its vicinity. Monitoring results will be applied for determination of discharge and for correlation with precipitation data.

Diver 1

Diver 2

WIRE EXTENSOMETER

Wire extensometer with NetLG-501E device for digitally recording and storing data.

Continuous relative displacement monitoring at the area of the Kostanjek landslide using 13 wire extensometers: 8 long-spans; 1 short-span; 4 vertical extensometers in the borehole. Monitoring results will be applied for interpretation of landslide model and for development of early warning system.

Ekstenziometar 1
Ekstenziometar 2

SENSORS FOR MEASURING HYDROSTATIC PRESSURES

Sensor for measuring the water level measuring hydrostatic pressures
NetLG-001E device for digital data recording
.

Continuous water level monitoring at the area of the Kostanjek landslide on 3 locations in 3 wells. Monitoring results will be applied for interpretation of landslide model.


Senzor 1
Senzor 2

AUTOMATIC REGISTRATION OF PRECIPITATION (CONTAINER TO ROLLOVER - TIPPING BUCKET)

RS-1 automatic rainfall recorder (vessel to capsize - tipping bucket) and NETLG-201E device for digitally recording and storing measurement data.

Continuous rainfall monitoring at the Kostanjek landslide with the purpose of analysis and interpretation of rainfall influence to the landslide movement and development of early warning system.

Automatski registrator oborina

SENSORS FOR MEASURING PORE PRESSURE

KPB-PA sensors for measurement of pore pressures NetLG-104E device for digital data recording (data logger).

Continuous pore pressure monitoring at the area of the Kostanjek landslide in one borehole at the following depths: 62,8 m; 50,1 m; i 37,45 m. Monitoring results will be applied for interpretation of landslide model.

Senzori za mjerenje pornih pritisaka

Senzori za mjerenje pornih pritisaka 1
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