Application of cable anchor on the support technology at the starting cut in a fully mechanized caving face

Based on the situation of support and soft coal at the starting cut in longwall top-coal caving mining,the support technology of net and cable anchor was drawn out.By use of theoretical analysis and numerical simulation calculation,the mechanism of support of net and cable anchor was analyzed,then pointed out that this technology can depress the expansion of fracture zone and plastically deforming area in surrounding rock of road,reduce the surface displacement of road,and then take the stability into reality.The practical results have shown that the support technology of net and cable anchor used at the starting cut can control the reduction of cross-sectional area,then the preliminary robbing time will be earlier and the workface will be high-output and high efficient face.