摘要
针对深部煤矿开采面临的高地应力难题,以山东某矿3下209工作面为工程背景,系统研究了定向长钻孔分段水力压裂技术的防冲应用效果。通过ABAQUS数值模拟与现场监测验证,揭示了多段压裂裂缝非对称羽状扩展规律及应力干扰机制,表明该技术可形成辐射状损伤区并降低风巷顶板位移量33%,有效实现顶板结构弱化与应力转移。研究成果为深部矿井冲击地压防治提供了理论依据与技术支撑。
Aiming at the high geostress problem faced by deep coal mining,the effect of the application of directional long-drill segmental hydraulic fracturing technology for preventing washout was systematically studied with the engineering background of 209 working face under 3 in a mine in Shandong.Through ABAQUS numerical simulation and on-site monitoring verification,the asymmetric plume expansion law of multi-segment fracture cracks and the stress interference mechanism are revealed,indicating that the technology can form radial damage zones and reduce the displacement of the roof plate of the wind tunnel by 33%,which can effectively realize the weakening of the roof plate structure and the transfer of stresses.The research results provide theoretical basis and technical support for the prevention and control of impact ground pressure in deep mines.
作者
刘亚运
Liu Yayun(Binhu Coal Mine,Zaozhuang Mining(Group)Co.,Ltd.,Zaozhuang Shandong 277000,China)
出处
《山西冶金》
2025年第8期247-249,共3页
Shanxi Metallurgy
关键词
坚硬顶板
定向长钻孔
水力压裂
hard roof
directional long drilling
hydraulic fracturing
