沿空留巷巷旁充填体宽度合理化研究

Study on the rationalization of backfilling width along goaf roadway

针对利用充填法进行沿空留巷后巷旁充填体的宽度值合理化选择问题,通过研究留巷后上覆岩层运动规律,利用UDEC数值模拟软件建立充填体宽度不等的的数值分析模型,然后进行围岩变形及塑性区变化的对比分析,得出充填体宽度的合理值为2.5m,并进行了充填实践,巷道围岩控制效果达到预期目的。

As to the rational choice of backfilling width value along goaf roadway by filling method,through the research on the overlying strata movement rule of goaf roadway,the numerical analysis model of different backfilling width is established by using UDEC numerical simulation software,then the deformation and change of the plastic zones of surrounding rock are compared and analyzed,reasonable value of the backfilling width is 2.5 m.The filling practice is conducted,and the control effect of roadway surrounding rock realizes the desired purpose.