厚煤层回采巷道超前动压影响下围岩控制技术研究

Study on Surrounding Rock Control Technology under the Influence of Advanced Dynamic Pressure of Mining Roadway in Thick Coal Seam

以枣泉煤矿130203综放工作面两巷为工程背景,针对两巷在工作面回采超前动压影响下围岩变形较大、矿压显现强烈问题,提出了工作面回采期间超前采动应力场影响下巷道综合控制技术方案。通过现场工程应用,巷道变形量较以往缩小了50%,巷道维修量减小,为类似条件下工作面开采积累了经验。

Taking the two roadways of the 130203 fully mechanized top coal caving face in Zaoquan Coal Mine as the engineering background,aiming at the problems of large surrounding rock deformation and strong mine pressure behavior under the influence of advanced dynamic pressure in the working face,a comprehensive control technical scheme of roadway under the influence of advanced mining stress field during mining is put forward.Through the application of on-site engineering,the roadway deformation is reduced by 50%compared with the previous roadway deformation,and the roadway maintenance is reduced,which accumulates experience for working face mining under similar conditions.