Barylova, Aleksandra

Brui, A.V.

Sukhova, V.V.

English

Scientific hub Dnipro University of Technology

 Aleksandra Barylova A.V. Brui, research supervisor V.V. Sukhova, language adviser                                       SHEI “National Mining University”, Dnipropetrovsk   Surveying of Mine Workings Supported with Rock Bolts    Modern  mining industry of Ukraine is currently facing the issues of gradual raising of  coal production  and its intensification. Supporting system like rock bolt is used as a safeguard against toppling caused be intensive coal extraction  and   it transfers  the load from unstable exterior to the confined interior of rock mass.  It should be recognized that installation of various reinforcement systems  and their timely maintenance leads to significant cost savings.  Besides, anchoring provides the resistance and reliability of  mine workings while reducing metal costs.  Over the last decade, research on  condition of mine workings supported with rock bolts has increasingly demonstrated  that the rate of deformation  at the edge of massif previouly neglected by mine surveyors requires detailed study. The lack of a unified approach to the normative standards and nonconformance  with collected data about conditions of  mine workings to passport of mine workings supported with reinforcement systems may be hazardous for mine surveyors  whose job is to efficiently estimate the condition of  deformation  at the edge of massif  in a particular mine working.       Until now, mine surveyors apply the method of visual monitoring and measuring to estimate the rate of edge massif deformation on a specially constructed observation stations. Observation stations are usually constructed during the entry driving. Regular measurements are carried out at these stations and vertical and horizontal convergence is defined.  The aim of this work is to develop a method that enables the mine surveyor  to effectively assess the state of workings and to predict areas that require immediate reinforcement. Reference picket,heights and width, seam height of mine working serve as initial data for any mine surveyor who want to compare the actual condition of  mine opening  with  a previous one.  Due to its relative simplicity and accuracy in measurements method proposed can be introduced and practised in mine workings of Ukraine without  attraction of additional human and technical resources    18

Surveying of Mine Workings Supported with Rock Bolts

http://ir.nmu.org.ua//bitstream/123456789/148821/1/18.pdf

Surveying of Mine Workings Supported with Rock Bolts

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Scientific hub Dnipro University of Technology