超前动压影响下西曲矿18503工作面巷道围岩控制技术研究

Study on Surrounding Rock Control Technology of 18503 Working Face in Xiqu Coal Mine under the Effect of Advanced Dynamic Pressure

研究了工作面合理回撤通道附近定向爆破断顶减压技术及配套施工工艺,即对工作面合理回撤通道附近的顶板进行爆破断顶,切断工作面采动应力传递路径,改善工作面回采时动压影响区域内巷道的应力环境,继而实现受动压影响巷道围岩的长时稳定,现场应用效果显著。

The technology of directional blasting roof-breaking and decompression near the reasonable withdrawal passage of the working face and its supporting construction technology are studied,that is,blasting roof-breaking near the reasonable withdrawal passage of the working face,cutting off the stress transmission path of the working face,improving the stress environment of the roadway in the area affected by the dynamic pressure during the mining of the working face,and then realizing the long-term stability of the surrounding rock of the roadway affected by the dynamic pressure.The field application effect is remarkable.