Elaboration of Ground Motion Directivity in Undermined Area Based on Seismic Noise Measurement

Study of Site Effect at Seismic Station Located in Undermined Area of Karviná Region (Czech Republic)

“…The first study by means of spectral ratio methods was performed in the Karviná region by Kaláb and Knejzlík (2006) on the records of mining induced seismic events generated in the Ostrava-Karviná Coalfield (OKC). Next studies were performed both on the records of mining induced seismic events generated in the OKC as well as on the records of seismic noise measured in the Karviná region, e.g., Kaláb and Lyubushin (2008), Lednická and Kaláb (2014), Lednická (2015). The results, gathered in selected parts of the Karvina region, confirmed the possibility of using these methods while investigating the seismic effect amplification in sedimentary layers.…”

“…As mentioned in several studies, fault zones are anisotropic solids characterized by highly fractured zones and ground motion directivity is often documented in the vicinity of these zones (e.g., Vogfjörd 2014, Panzera et al 2014). Elaboration of ground motion directivity using seismic noise measurement was performed in other part of Karviná region -in Stonava locality (Lednická 2015). The measurement was realized in the zone of the Eastern Thrust and it was found that the determined maximum amplification corresponds to the direction of the horizontal component of stresses confirmed by the in situ stress measurements.…”

Use of Fiber-Optic Sensors for the Detection of the Rail Vehicles and Monitoring of the Rock Mass Dynamic Response Due to Railway Rolling Stock for the Civil Engineering Needs

“…In geotechnical engineering, they are most commonly used for in situ measurements of vibrations, monitoring during blasting operations at mines, or during underground construction employing blasting or heavy vibration demolition techniques (e.g., hydraulic hammers) to monitor the dynamic response of buildings or rock mass [25][26][27][28]. In urban areas, the dynamic effect of traffic on buildings and their surroundings has been monitored [29][30][31][32][33][34]. Another branch of seismic engineering where these stations are often used is in the determination of natural seismicity for micro-seismic rationing and operational use in service measurements of induced seismicity (e.g., [34]).…”

“…In urban areas, the dynamic effect of traffic on buildings and their surroundings has been monitored [29][30][31][32][33][34]. Another branch of seismic engineering where these stations are often used is in the determination of natural seismicity for micro-seismic rationing and operational use in service measurements of induced seismicity (e.g., [34]). Our aim was that the presented solution and information could be used for future research in civil engineering, especially in monitoring the condition of buildings and their possible susceptibility to damage caused by rolling stock.…”