Permeability-increasing mechanism of network slotting boreholes and application in crossing borehole gas drainage
Abstract：For the pressure relief inadequacy problem of bottom road boreholes, based on the method of combination of theoretical analysis and field tests, the permeability-increasing mechanism of network slotting boreholes was studied, and the permeability-increasing technology of network slotted boreholes crossing from floor was proposed. Filed test show that the technology can improve the extraction effect significantly,the permeability can be increased by 122 times in average, while the extraction flow increases 3.5 times and the gas concentration increases 2.3 times, and the stand- ard time of gas pre-pumping decreases more than 50%.
Keywords：slottingnetworkpermeability-increasingcrossing from floorgas drainage
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 1425-1430 )