DOI: 10.11799/ce201606005
Design on gas drainage drilling field based on two-zone height
LI Jia
XIONG Xiao-feng
SUN Yan
LIU Yu
DAI Shuang-cheng
ZHANG Yu
Abstract：To solve the upper corner gas over-limit, simultaneous drainage-drilling technology is applied in 1208 working face material roadway of Shuguang coal mine, the two-zone height is analyzed using empirical formula and UDEC simulation. According to the study, the height of the fissured zone and fractured zone is 16m and 31m. The gas drainage drilling field is designed according to the two-zone height. According to the observed data in field application, the average gas volume fraction in No?1 drilling field is 39%, the gas concentration in 1208 working face and material roadway is below 1% by gas extraction in material roadway, the upper corner gas concentration is within limit, gas drainage in fissure zone drilling field is effective.
Keywords：two-zone heightgas drainagedrilling fieldnumerical simulation
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( 15-18 )