浅埋煤层破碎围岩回采巷道支护参数优化

Optimization of Support Parameters of Roadway with Broken Surrounding Rock in Shallow Seam

以黄河北煤田某矿2107工作面工程地质和开采条件为背景,在围岩分类和矿压监测的基础上提出了2种合理的巷内支护改进方案,并采用FLAC3D数值模拟方法优选出最佳方案。结果表明,采用改进方案进行巷内支护能够充分发挥锚杆的承载能力,控制巷道变形在合理的范围内,实现了支护参数优化,取得了较好的支护效果和经济效益。

Taking the geological conditions of 2107 working face in coalfield of North Yellow River as the background,were used to conduct roadway pressure observation,on the basis of surrounding rock classification and rock pressure monitoring,two programs of roadway support parameters were put forward,and the best program was determined by FLAC3 Dnumerical simulation method.The results show that the bolts bearing capacity gave full play to with the improved scheme for supporting,the deformation of roadway was controlled,the supporting parameters optimization were achieved,and good supporting effect and economic benefits were obtained.