堅硬煤層超高壓水力割縫增透技術(shù)研究

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中圖分類號：U467.48 文獻標(biāo)志碼：A 文章編號：2095-2945（2025）24-0065-04

Abstract：InChinacoalseamshavelowpermeabilityanditisdificultforgasextractiontomeetstandards.Inorderto improvegasextractioneficiencyandatthesametimesolvetheproblemofpooslagremovalefectoftraditionalhydraulic measures，asetofultra-highpressurehydraulicslitingwithaworkingpressureofmorethan9OMPaisused.Theultra-high presure hydraulicslottedpressurerelief andpermeabilityenhancementtechnologyuseswaterasthemedium toscourandpeel offthecoalbodyaroundtheborehole，increasethenumberofcracksinthecoalbody，andimprovetheeficiencyofgas extraction.Itis the development direction of coal minegas disaster prevention measures one of the directions.

Keywords：hardcoalseam;ultra-hghpressure;hydraulicseamcutingpressurereliefandpermeabilityimprovementgasextraction

趙固二礦西翼措施巷二，煤層瓦斯含量在 9.33～ 14.80m3/t 之間，原始區(qū)域?qū)崪y瓦斯壓力為 0.16～ 0.36MPa ，鉆孔瓦斯流量衰減系數(shù)在 0.1036～0.1546d-1 之間，二 1 煤層煤的堅固性系數(shù)在0.86～1.92，瓦斯放散初速度 ΔP 在28～42。（剩余4543字）