低渗煤层超高压水力割缝有效抽采半径考察及研究

Investigation and Study on Effective Extraction Radius of Ultra High Pressure Hydraulic Fracturing in Low Permeability Coal Seam

为了解决矿井低透气性煤层超高压水力割缝钻孔合理间距的难题,以14201工作面为工程背景,运用抽采流量法研究分析14201工作面采用超高压水力割缝施工区域不同钻孔布置间距与抽采时间的关系。该研究结果对类似地质条件下钻孔布置及抽采时间具有一定的指导意义。

In order to solve the problem of reasonable spacing of ultra-high pressure hydraulic cutting boreholes in low-permeability coal seams in mines,taking the 14201 working face as the engineering background,the relationship between different drilling spacing and pumping time in the construction area of the 14201 working face using ultra-high pressure hydraulic cutting was studied and analyzed using the pumping flow method.The research results have certain guiding significance for drilling layout and extraction time under similar geological conditions.