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  • BEHAVIOR OF SHIELD SUPPORT IN LONGWALL MINING

    The success of longwall mining depends to a large extent on the capacity and design of shield support. Throughout the history of longwall mining, shield support design has been a critical issue to the success of mining operation. To make mining operations safe and sound the study of behavior of shield support and its design is very essential for complete success of the mine. Support

  • Behavior of Shield Support in Longwall Mining

    16/10/2016· This study is focused on behavior of shield support in longwall mining and shall concentrate to evaluate on the following areas: 1. To study the shield behavior in a underground longwall coal mine. 2. Simulation of the field conditions in FLAC 5.0 software. 3. Interpretation of the results generated from simulating the models in FLAC 5.0 to determine the shield behavior.

  • [PDF] Behaviour of Shield Support in Longwall Mining

    Field observation were conducted on behaviour of chock shield support of capacity 800T during extraction of longwall panel no. 3D2 at 250m depth and 150m face length of GDK 10A Incline, Singareni Collieries Company Limited. Chock leg pressures and leg closures were regularly monitored at different stages of extraction of longwall panel. During extraction of the panel, maximum leg closure and

  • Behaviour of Shield Support in Longwall Mining Nature

    Behaviour of Shield Support in Longwall Mining Free download as PDF File (.pdf), Text File (.txt) or read online for free. observation were conducted on behaviour of chock shield support of capacity 800T during extraction of longwall panel no. 3D2 at 250m depth and 150m face length of GDK 10A Incline, Singareni Collieries Company Limited. Chock leg pressures and leg closures were regularly monitored at different stages of extraction of longwall

  • Behaviour of Shield Support in Longwall Mining

    Behaviour of Shield Support in Longwall Mining @inproceedings{Kumar2014BehaviourOS, title={Behaviour of Shield Support in Longwall Mining}, author={C. Kumar}, year={2014} } C. Kumar; Published 2014; Engineering; Field observation were conducted on behaviour of chock shield support of capacity 800T during extraction of longwall panel no. 3D2 at 250m depth and 150m face length of

  • Behaviour of Shield Support in Longwall Mining ethesis

    Field observation were conducted on behaviour of chock shield support of capacity 800T during extraction of longwall panel no. 3D2 at 250m depth and 150m face length of GDK 10A Incline, Singareni Collieries Company Limited. Chock leg pressures and leg closures were regularly monitored at different stages of extraction of longwall panel. During extraction of the panel, maximum leg closure and pressure on the chock shield

  • Behavior of Shield Support in Longwall Mining Nature

    This is to certify that the thesis entitled, “ BEHAVIOR OF SHIELD SUPPORT IN LONGWALL MINING ” submitted by Mr. Chandan Kumar, 109MN0392, in partial fulfillment of the requirement for the award of Bachelor of Technology Degree in Mining Engineering at the National Institute of Technology, Rourkela (Deemed University) is a record of original research work carried out under my supervision.

  • [PDF] Behaviour of Shield Support in Longwall Mining

    Field observation were conducted on behaviour of chock shield support of capacity 800T during extraction of longwall panel no. 3D2 at 250m depth and 150m face length of GDK 10A Incline, Singareni Collieries Company Limited. Chock leg pressures and leg closures were regularly monitored at different stages of extraction of longwall panel. During extraction of the panel, maximum leg closure and

  • Behaviour of Shield Support in Longwall Mining

    Behaviour of Shield Support in Longwall Mining Free download as PDF File (.pdf), Text File (.txt) or read online for free. observation were conducted on behaviour of chock shield support of capacity 800T during extraction of longwall panel no. 3D2 at 250m depth and 150m face length of GDK 10A Incline, Singareni Collieries Company Limited. Chock leg pressures and leg closures were regularly monitored at different stages of extraction of longwall

  • Behaviour of Shield Support in Longwall Mining

    Behaviour of Shield Support in Longwall Mining @inproceedings{Kumar2014BehaviourOS, title={Behaviour of Shield Support in Longwall Mining}, author={C. Kumar}, year={2014} } C. Kumar; Published 2014; Engineering; Field observation were conducted on behaviour of chock shield support of capacity 800T during extraction of longwall panel no. 3D2 at 250m depth and 150m face length of

  • Performance of Chock Shield Supports in Longwall

    Understanding the shield-roof interaction in longwall panels enables us to apply the SSRI system for ground control in longwall coal mines. Early warning of severe roof weighting can be achieved

  • Introduction To Longwall Mining

    Behavior Of Shield Support In Longwall Mining 1.Introduction the success of longwall mining depends to a large extent on the capacity and design of shield support.Throughout the history of longwall mining, shield support design has been a critical issue to the success of mining operation.To make mining.

  • Shield-Roof Interaction in Longwall Panels: Insights

    16/12/2018· Large-cutting-height mining requires strong shield to support the extraordinarily high roof loading, and therefore, the shield capacity in this panel reaches 26,000 kN by increasing the diameter of shield leg. Nevertheless, a strong shield does not necessarily address all the issues in the longwall panel with large-cutting-height. Shield crushing still occurs during the retreating of some

  • Support capacity and roof behaviour at longwall faces

    Field investigations on seven U.S. longwall coal faces were carried out to examine the behaviour and interaction of roof, floor and support on longwall faces equipped with hydraulic powered supports. The most important factor in determining face stability was found to be periodic weighting and an empirical design equation was developed for support capacity. The interaction of various elements in the face

  • Two-Leg Longwall Shield Mechanics

    TWO-LEG LONGWALL SHIELD MECHANICS By Thomas M. Barczak,1 and David E. Schwemmer2 ABSTRACT This Bureau of Mines report investigates shield mechanics by describing the elastic response and in­ teraction of shield components to applied vertical and horizontal displacements for various canopy and base contact configurations. This research provides information on generalized shield

  • CHOCK SHIELD SUPPORTS Mining Science and

    Home / Longwall Mining / Equipment / Powered Supports / CHOCK SHIELD SUPPORTS. CHOCK SHIELD SUPPORTS . Powered Supports 0 Comment. Chock shields supports always have 4 hydraulic legs and all 4 legs are connected to the canopy of the support. The legs of a chock shield support are either vertical or inclined but the majority of chock shields have inclined legs as this provides better support

  • LONGWALL FACE SUPPORTS IN THE GERMAN COAL MINING INDUSTRY

    Longwall face supports developed from single props with roof bars to self-ad­ vancing supports (frame and chock type) and finally to shield supports with 2 or 4 props (Figure 1). In the early seventies shield supports of the caliper type were first introduced in the German coal mining industry. Following their initial success these supports