采高、放煤步距等参数的优化

Optimization of Parameters Such as Mining Height and Coal Drawing Step Distance

为进一步提升综合机械化放顶采煤方法开采的安全性和顶煤的回收率,以16#煤层工作面为例,在对其地质、煤层等条件分析的基础上,基于FLAC3D软件构建数值模拟仿真模型,并对模型的岩体参数进行设置,重点对不同采高和放煤步距对煤体的破坏情况进行对比,最终确定得出最佳采高范围控制在2.0~2.5 m之间,放煤步距为0.6 m。

In order to further improve the safety of comprehensive mechanized top coal caving mining method and the recovery rate of top coal,taking the 16#coal seam working face as an example,based on the analysis of its geological and coal seam conditions,a numerical simulation model is constructed using FLAC3D software,and the rock parameters of the model are set.The focus is on comparing the damage of different mining heights and coal caving steps to the coal body.The final decision was made to control the optimal mining height range between 2.0 and 2.5 meters,with a coal drawing step distance of 0.6 meters.