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52 150 (0,233s)

Výsledek výzkumu

Seismo-acoustic effects of fractures in rock samples

The submitted contribution describes an original method of studying both linear and pulse loading of the rock environment that can be applied to both borehole cores from any type of prospecting borehole, prepared rock blocks or in-situ measurements. ...

Volcanology

  • 2019
  • Jost
  • Odkaz
Výsledek výzkumu

Acoustic emission of quasi-isotropic rock samples initiated by temperature gradients

In paper is described the course of seismoacoustic emission induced by heating of rock samples. Isotropic rock samples (marble and sandstone) were subjected by slow (0,50C/min) and fast (100 C/min) heating. Seismacoustic emission was mon...

DB - Geologie a mineralogie

  • 2006
  • Jx
Výsledek výzkumu

Localization of Acoustic Emission in Anisotropic Velocity Field

Seismoacoustic events localization in anizotropic medium.

DC - Seismologie, vulkanologie a struktura Země

  • 2008
  • Jx
Výsledek výzkumu

Long-term development of seismic monitoring networks in the Ostrava-Karviná coal mine district

, there were systems for monitoring seismoacoustic emissions during coal extraction. LaterThis paper is devoted to a complex review of various monitoring networks surface seismic stations which monitor manifestatio...

DC - Seismologie, vulkanologie a struktura Země

  • 2012
  • Jx
  • Odkaz
Výsledek výzkumu

Ultrasonic and Seismoacoustic Control of Rheological Deformations of Loaded Sandstone Samples.

Annotation not available...

DC - Seismologie, vulkanologie a struktura Země

  • 1999
  • Jx
Výsledek výzkumu

Investigation into the Seismoacoustic Properties of Specific Polycrystalline Materials Used in Nuclear Reactors

The characteristics of the wave fields observed during the transmission of quasi longitudinal ultrasonic waves through polycrystalline graphite samples have been studied. Experimental results are compared with theoretical calculations using the data ...

DB - Geologie a mineralogie

  • 2012
  • Jx
  • Odkaz
Výsledek výzkumu

Statistical study of acoustic emissions generated during the controlled deformation of migmatite specimens

of approximately 2 s. During load testing, seismoacoustic emissions were monitored and time decay. The present work focuses on a detailed analysis of the seismoacoustic......

Geology

  • 2017
  • Jimp
  • Odkaz
Výsledek výzkumu

A Study of Mining-induced seismicity in Czech Mines with longwall coal exploitation

A review is performed for the data of local and regional seismographical networks installed in mines of the Ostrava-Karviná Coal Basin (Czech Republic), where underground anthracite mining is carried out and dynamic events occur in the form of rockbu...

DC - Seismologie, vulkanologie a struktura Země

  • 2007
  • Jx
Výsledek výzkumu

Seismic activity of hard coal longwall mining in protective shaft pillar near closed room and pillar panel

Monitoring of seismic activity during mining in the Upper Silesian Coal Basin is a part of rockburst prevention system. System is composed from two parts - seismological (SL) and seismoacoustic (SA) monitoring. Evaluation o...

Mining and mineral processing

  • 2021
  • D
  • Odkaz
Výsledek výzkumu

Environmental monitoring in the vicinity of the Mokrá, ČMC a.s.cement works - a) soil monitoring - b) air monitoring - 13071110596

*Environmental monitoring in the vicinity of the Mokrá, ČMC a.s.cement works in 2013 - a) soil monitoring - b) air monitoring (long term monitoring with passive sampling technique)....

DN - Vliv životního prostředí na zdraví

  • 2014
  • Vsouhrn
  • 1 - 10 z 52 150