在中兴矿1200工作面分段采用高水充填巷旁支护及切顶卸压2种沿空留巷技术,两者均能较好地形成稳定留巷,满足二次使用要求。高水充填支护技术机具及材料沉重,工序较为繁琐且耽误工作面推进速度,成本较高。切顶卸压沿空留巷技术所需工序均简单且工作量小,均超前工作面或平行于回采施工,不耽误生产,有效地提高了生产效率并降低了留巷成本。 In Zhongxing Mine 1200 working face, two kinds of gob-side entry retaining technology and top pressure relief tunneling are adopted, both of which can form stable laneway well and meet the requirements of secondary use. High water filling and supporting technology Heavy machinery and materials, the process is more complicated and delayed the advancing speed, high cost. Top-cut pressure relief gob-side entry technology required for the process are simple and small workload, are ahead of the work surface or parallel to the mining construction, without delay production, effectively improve the production efficiency and reduce the cost of retaining Lane.