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A Study of the Trigger Effect in a Rock Burst-Hazard Rock Massif by Laser Interferometry

  • Vladimir LugovoyEmail author
  • Grigoriy Dolgikh
  • Denis Tsoy
  • Andrey Gladyr
  • Maksim Rasskazov
Conference paper
Part of the Springer Proceedings in Earth and Environmental Sciences book series (SPEES)

Abstract

The article presents a comprehensive multi-level monitoring system including a laser deformograph and a nanobarograph installed in the mine workings at a depth of 300 m. The results of experimental studies of the laser deformograph at recording deformation disturbances in a rock massif are presented. The research results prove that this equipment can register both oscillations of the rock mass, caused by explosive works and reciprocating movement of tectonic blocks. We have researched the performance of slow deformation waves and present the brief overview of the research results in this article. The results of the registration of earthquakes in the Baikal rift zone are given. Experimental studies were carried out by using the laser deformograph, the laser nanobarograph and an automated multichannel geoacoustic system “PROGNOZ ADS” for monitoring the rock pressure. The main research tasks were to assess the impact of earthquakes on the state of the mountain massif in the area of mining operations in the uranium deposits of Streltsovsky ore field, to work out methods for registering earthquakes and earthquake precursors. The relationship between remote earthquakes and indicators of the rock mass acoustic activity in the form of a significantly increased number of acoustic events and their energy growth after the registration of a seismic wave is established. To monitor the pre- and post-history of seismic events, two-day recordings of the deformograph and nanobarograph have been analyzed before and after the earthquake. In this context, we see a high degree of correlation of the obtained results, which can be explained by interference of the mechanical vibrations and the refraction factor modifications occurring in the air-filled optic path of the deformograph.

Keywords

Laser deformograph Laser nanobarograph Geoacoustic monitoring Slow deformation waves Geoacoustic activity Trigger effect 

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Institute of Mining, Far East BranchRussian Academy of SciencesKhabarovskRussia
  2. 2.V.I. Ilichev Pacific Oceanological Institute, Far East BranchRussian Academy of SciencesVladivostokRussia

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