Reasonable choice of mining method means that it can strengthen the safety management of mining work and reduce personal injury and death for geological conditions. Depending on the stope ore mining process management method, a metal, non-metallic underground mining methods are roughly classified into the following categories: (1) Empty field mining method. It is characterized in that during the mining process, the goaf is mainly supported by the retained or permanently retained pillars, and the goaf is always empty. Generally used when the ore and surrounding rock are very stable. (2) Caving mining method. It is characterized in that, with the mining of ore, it is planned to fill the goaf with the cover rock and the upper and lower rock of the collapsed ore body, and timely control the ground pressure of the goaf and the treatment of the goaf. It is generally used under the condition that the surrounding rock of the ore body is unstable and the surface is allowed to fall. (3) Mining and mining law. It is characterized in that during the mining process, some ore collected in the goaf is temporarily retained, so as to support the pillar to support the goaf. Generally, the ore is relatively stable, and it is not easy to be oxidized, bonded and spontaneously burned, and the ore body surrounding rock is moderately stable. (4) Filling mining method. The utility model is characterized in that, in the mining, the goaf supports the goaf by means of the artificial support body formed by filling the filler, the pillar or the filler and the filler. It is mainly used for ore bodies with high value of mining ore, high recovery rate, convenient filling materials, no surface subsidence and special complex geological conditions. Sports Shoes For Men,Mens Tennis Shoes,Mens Basketball Shoes,Mens Black Football Shoes Shangqiu JIAYING SHOES CO.,LTD. , https://www.hnjyshoes.com