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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Convergence measurement of the vent shaft on the 3rd floor during the mining of coalface No. 292 200/4
 Koníček, Petr ; Kajzar, Vlastimil ; Kukutsch, Radovan ; Staš, Lubomír
On the basis of a contract, the Institute of Geonics of the CAS realized repeated convergence measurement of selected part of the mining roads and appropriate part of vent shaft on the 3rd floor in the vicinity of the ČSM Sever vent shaft. The main reason was to capture spatio-temporal and dynamic changes in relation to the mining of the coalface No. 200 200/4. A section of the embankment of the 3rd floor of the vent shaft was selected for the convergence measurement. The work can be divided into 3 separate tasks - terrestrial laser scanning of the vent shaft from level of the 3rd floor, pilot laser scanning of the vent shaft from the skip elevator and evaluation of seismological activity registered during the mining of the coalface No. 292 200/4.
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