Application of Radial Jet Hydraulic Pressurized Fracturing Technology to Seam Opening of High Gassy Mine Shaft
LI Xiang
LIU Lin-song
Abstract：Nansu Mine Income Ventilation Shaft of Zhaozhuang Mine had a designed depth of 784.5 m. When the mine shaft construction was at a depth of 724.17 m ,the mine shaft sinking was stopped. The radial jet hydraulic pressurized fracturing technology was applied to the seam opening operation of an underneath No.3 seam (high gassy seam ). After the hydraulic pressurized fracturing ,the gas pre-drainage was only conducted with 35 days and the seam had the seam opening conditions. The practices showed that the fracturing technology could play a well role to the seam permeability improved ,stress released and seam pressure bump elimination. In comparison with the conventional seam opening meth‐od ,the fracturing technology could safely and rapidly make the seam with the seam opening condi‐tions.
Keywords：seam opening of mine shaftradial jethydraulic pressurized fracturinghigh gassy mine
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( 18-21 )