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  • Gravitational rules are used as the basis for the prognosis of vertical stress distribution in exploited rock masses. A decrease in stress in a worked-out area (decrease between the initial stress and the stress acting on the floor of the outmined seam) results in an increase in stress in the surrounding unworked area. The size of load in the floor of the worked-out area is determined by the degree of disturbance in the overlying strata rocks. An overall additional load in the surrounding rocks of the unworked area is determined based on the difference between the initial geostatic stress and the load in the floor of the worked-out area. The additional load, which is determined from the force of relieving the stress in the worked-out area divided by the periphery of the worked-out area, decreases per unit of length of the periphery of the worked-out area. Furthermore, the behaviour of stress in the direction of the worked-out area is calculated mathematically. In this way, the stress in the grid of points on the level of seams being mined can be calculated, and isolines of acting stress can be determined. As an example, we show calculations for a specific situation in a mine before rigid overlying strata failure and after the failure. After the rigid overlying strata failure, the additional stress decreased by approximately 40%.
  • Gravitational rules are used as the basis for the prognosis of vertical stress distribution in exploited rock masses. A decrease in stress in a worked-out area (decrease between the initial stress and the stress acting on the floor of the outmined seam) results in an increase in stress in the surrounding unworked area. The size of load in the floor of the worked-out area is determined by the degree of disturbance in the overlying strata rocks. An overall additional load in the surrounding rocks of the unworked area is determined based on the difference between the initial geostatic stress and the load in the floor of the worked-out area. The additional load, which is determined from the force of relieving the stress in the worked-out area divided by the periphery of the worked-out area, decreases per unit of length of the periphery of the worked-out area. Furthermore, the behaviour of stress in the direction of the worked-out area is calculated mathematically. In this way, the stress in the grid of points on the level of seams being mined can be calculated, and isolines of acting stress can be determined. As an example, we show calculations for a specific situation in a mine before rigid overlying strata failure and after the failure. After the rigid overlying strata failure, the additional stress decreased by approximately 40%. (en)
Title
  • The assessment of stress in anexploited rock mass based on the disturbance of the rigid overlying strata
  • The assessment of stress in anexploited rock mass based on the disturbance of the rigid overlying strata (en)
skos:prefLabel
  • The assessment of stress in anexploited rock mass based on the disturbance of the rigid overlying strata
  • The assessment of stress in anexploited rock mass based on the disturbance of the rigid overlying strata (en)
skos:notation
  • RIV/61989100:27350/12:86079655!RIV14-GA0-27350___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(ED2.1.00/03.0082), P(GP105/09/P277)
http://linked.open...iv/cisloPeriodika
  • 2012
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 123858
http://linked.open...ai/riv/idVysledku
  • RIV/61989100:27350/12:86079655
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • overlying strata disintegration; surface subsidence; stress distribution; longwall mining; underground mining (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [C53111740F26]
http://linked.open...i/riv/nazevZdroje
  • International journal of rock mechanics and mining sciences
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 50
http://linked.open...iv/tvurceVysledku
  • Šancer, Jindřich
  • Jiránková, Eva
  • Petroš, Vladimír
issn
  • 1365-1609
number of pages
http://bibframe.org/vocab/doi
  • 10.1016/j.ijrmms.2012.01.004
http://localhost/t...ganizacniJednotka
  • 27350
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