DOI: 10.11799/ce201702014
Research and application of integrated technology of high-strength full bolt-grouting in deep roadway
WEI Xi-he
HUANG Qing-xian
JIANG Jing-ping
YANG Zhan-biao
LI Jian-jian
Abstract：Aiming at the large deformation and instability in deep high stress soft rock roadway under high tectonic stress extrusion, the comprehensive, large range and deep surrounding rock reinforcement technology was proposed using high strength full bolt-grouting, which transferred end-bolting to full-bolting of high strength hollow bolt/cable, consolidated the surrounding rock, and improved the self-bearing capacity of surrounding rock and supporting structure coupling. The technology was applied in air rise test section of V1 rise district under 3rd level in Pingdingshan Coal Mine, and the reasonable time of high-strength bolting was determined according to roadway surface displacement, deep rock separation deformation, rupture observation, etc. Measurement showed, the deformation was less than 10mm, the average maximum settlement of roof was 200mm, long-term stability of roadway could be achieved by simple repair.
Keywords：deep soft rock roadwaylarge deformationhigh-strength fully bolt-groutingdeep mining
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 43-45,48 )