DOI: 10.11799/ce201804007
Research and application of coal uncovering technology optimization in rock cross-cut of outburst coal seam
WANG Hai-tao
Abstract：In order to improve the outburst prevention technology of coal uncovering in rock cross-cut of outburst coal seam, based on the engineering background of Pingshou Coal Mine, the geological conditions and gas occurrence status was analyzed in the rock cross-cut coal uncovering site of F15-17-12101 machine lane, a seven-step coal uncovering method was proposed including pre-drainage, skeleton, curing, grouting, anchor meshing, and shedding, shotcreting. The results show that, with the seven-step joint coal uncovering method, daily footage achieves 1.4m, and coal uncovering project is finished in 26 days, saving 2 months compared with the original method; coal production of fully mechanized mining increased 160 thousand tons, adding 100 million 800 thousand yuan of output value; during the construction period, no high gas, roof caving and hanging accident happened, and safe coal covering and coal seam crossing was realized.
Keywords：outburst coal seamcoal uncovering in rock cross-cutseven-step coal uncoveringpressure relief and permeability enhancement
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 22-24,29 )