Control Design of Dynamic Pressure of Upper High-strength Rock Beam in Stope
LIU Sili
WU Shiliang
ZHAO Jiyu
Abstract：In order to prevent the dynamic pressure impact during the loading of the upper high-strength rock beam in the stope, the "limited deformation" control design for the lower rock beam of the main roof structure of "double rock beam" was conducted by taking 3101 coal mining face in a mine as the research object and using the theory of"transferring beam" and the measured underground pressure parameters so as to ensure the upper high-strength rock beam to be close to the lower rock beam before loading and decrease the dynamic pressure impact. The research results showed that when the supporting strength was 0. 279 5 MPa, it can not only guarantee that the stope might not be affected by the dynamic pressure impact of the upper high-strength rock beam of the main roof during the first and periodic weighting, but also meet the requirements that the yield of the support prop was not overrun.
Keywords：upper high-strength rock beamlower rock beamdynamic-pressure impactlimited deformationcontrol design
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 45-48 )