连南县大麦山矽卡岩型多金属矿床为矽卡岩型铜、铅、锌矿床。产在燕山期中酸性侵入体与碳酸盐岩层的外接触带中,矿床成因为矽卡岩型。矿体产状受岩层层理及构造破碎带的控制,形态复杂,大小不等。由于矿山超深超挖,以获得更大的经济效益,忽视环境安全及人生安全。该地区为碳酸盐岩,浅部岩溶非常发育,大量排水疏干,导致岩溶地面塌陷、地面沉降、地面开裂等,造成十几栋房屋开裂、下沉、倒塌。而且选矿形成的废水、废渣影响到十几公里,甚至更远,附近的植物、禾苗不长,生态环境遭到破坏。 The Damanshan skarn-type polymetallic deposit in Liannan County is skarn-type copper, lead and zinc deposits. Produced in the Yanshanian acid intrusion and carbonate outer contact zone, the cause of the deposit skarn type. The ore body is controlled by strata strata and structural fractures, and its shape is complex and varies in size. As the mine ultra-deep over-excavation, in order to obtain greater economic benefits, neglect of environmental safety and safety of life. There are carbonate rocks in the area. The shallow karsts are well developed, and a large amount of drainage and dredging result in karst ground collapse, land subsidence and ground cracking. As a result, more than 10 houses crack, sink and collapse. And waste water formed by the dressing, waste affect a dozen kilometers, or even farther, near the plants, grasses are not long, the ecological environment has been destroyed.