论文部分内容阅读
3608 综采工作面预掘回撤通道在采动动压作用下顶板变形量较大,给工作面综采设备回撤安全带来一定威胁。为此,提出采用化学注浆方式加固顶板岩层,提高顶板岩层承载能力以及稳定性,并为顶板布置的锚杆、锚索提供较稳定的锚固基础。依据现场实际条件对注浆加固参数进行设计,应用后有效控制回撤通道顶板变形量,满足后续综采设备回撤需要。研究成果可为其他矿井综采工作面回撤通道围岩控制提供经验借鉴。“,”Under the action of mining dynamic pressure, the roof deformation of the pre-excavated withdrawal passage of 3608 fully mechanized mining face is large, which poses a certain threat to the safety of the fully mechanized mining equipment withdrawal. Therefore, the chemical grouting method is proposed to strengthen the roof strata, improve the bearing capacity and stability of the roof strata, and provide a more stable anchor foundation for the anchor rod and cable arranged in the roof. The grouting reinforcement parameters are designed according to the actual field conditions. After application, the roof deformation of the withdrawal channel is effectively controlled to meet the subsequent withdrawal needs of fully mechanized mining equipment. The research results can provide experience and reference for the surrounding rock control of the withdrawal passage in other fully mechanized mining face.