为保证上保护层尖灭被保护层工作面的回采安全,根据华丰煤矿地质条件,采用理论研究和数值分析的方法,研究其冲击地压发生机理和防治技术。结果表明:单保护层开采条件下,工作面大部分处于卸压范围内,上巷附近区域煤体应力产生集中,易发生冲击地压。通过采用“负煤柱”沿空掘巷能有效降低上巷附近区域煤体应力,促使高应力向深部转移。 In order to ensure the safety of the top protective layer in mining the protected working face, according to the geological conditions of Huafeng Coal Mine, the theoretical research and numerical analysis methods are used to study the rock burst mechanism and prevention and control technology. The results show that under the condition of single protective layer mining, most of the working face is in the pressure relief range, and the stress of coal in the vicinity of the upper lane is concentrated, so the rock burst is easy to occur. Through the use of “negative coal pillar ” roadway driving along the gully can effectively reduce the coal stress in the vicinity of the upper lane, prompting the transfer of high stress to the deep.