Application of Hydraulic fracturing technology on increasing coal tunneling
DONG Guofu
ZHAI Jun
ZOU Lishuang
YIN Xiaolei
Abstract： In the case of high gassy and low air permeable coal seam , if borehole measure is used in directly draining methane , gas drainage effect and time will be poor and long , that is low drainage efficiency.To improve it and achieve a sound effect of preventing gas, an experiment is conducted by using hydraulic fracturing technology for air permeability enhancement at K 1 coal tunneling lane in Tonghua Coal Mine.Result of it shows that hydraulic fracturing technology can enhance the air permeability of coal seam, improve single hole gas drainage concentration and flow rate , reduce outburst -prevention construction ’s influences on tunneling work, strengthen the measures of gas pre -drainage, and reduce the potential safety hazards of tunneling lane during production period.Furthermore, it makes the daily gas drainage amount and tunneling in working face increased more than 120%and 180%respectively.Ultimately achieved the purpose of production increase.
Keywords：hydraulic fracturingthe daily gas drainage volumeincrease production
Publication Date：2013-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 22-28 )