Design of Support Scheme for Large Section Roadways
In order to explore the support scheme for large section coal roadways,taking the cutting excavation of 18110 working face in Wangjialing Coal Mine as an example,FLAC3D software was used to simulate the influence of support parameters such as anchor cable length and spacing on the support scheme,and a set of coal roadway support schemes was proposed.The results indicated that in order to achieve a balance between support effectiveness and economy,the length of the top anchor rod and the side anchor rod were both determined at 2.4 m;the length of the anchor rod should be strictly controlled,and the anchoring effect of excessively long sections was relatively weak;the effect of reducing the deformation of coal roadway surrounding rock by controlling the spacing between anchor rods was not significant,but the reduction of the spacing between anchor cables can significantly reduce the deformation of the roof and side walls.
万方数据
维普
