DOI: 10.11799/ce201711013
Research on roof control technology of coal-rock roadway under complex conditions
QIU Wen-hua
KONG Ling-hai
OUYANG Zhen-hua
WANG Hui-ming
Abstract：In order to reduce the deformation of roadsides and roof of coal-rock roadway before mining and reduce maintenance engineering,the surrounding strata failure mechanism of roadway under the condition of unequal thickness compound roof and soft thick interlayer in ultra-close distance coal seam group in Liliu mining area of Gaojiazhuang Mine,theoretical analysis,numerical simulation and field measurement were carried out.The results show that the soft thick interlayer of coal seam and the unequal thickness compound roof is the main cause of large scale destruction of surrounding strata.And the strata structure in an unbalanced state of pressure is the nature of the reasons causing widespread damage to the surrounding strata roadway.Based on the above results,the unequal thickness compound roof cable active supporting technology is proposed,part of the soft thick interlayer of coal seam supporting and reinforcing supporting parameters are optimized.The engineering application shows that the roof had been effectively controlled,and the largest deformation of the roadsides of the soft thick interlayer could also be slowed down,the roadway deformation and maintenance inputs are controlled.
Keywords：ultra-close coal seam groupcoal-rock roadwaycoal and strata failure mechanismultrasonic detection technologyroof control
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：5( 45-49 )