汝城钨矿是一座具有 70多年历史的老矿山 ,采用矿脉留矿法采矿 ,从上至下逐渐延伸 ,现已开采至地下约 40 0ｍ。在井下排水排泥系统设计时 ,考虑到金属矿山泥砂量相对较少 ,故采用港道水沟沉淀 ,人工清理的方法处理泥砂。但近几年随着采矿向下延伸 ,向外扩展 ,只要人工清理不及 Rucheng tungsten ore is a 70-year-old mines, mining using mineral retention method, gradually extending from top to bottom, has been mined to the ground about 400m. Drainage mud system in the underground design, taking into account the relatively small amount of metal mine sand, so the use of port ditch sedimentation, manual cleaning methods to deal with sand. But in recent years as the mining extends downward, expanding outward, as long as manual clean-up