德兴九区铜金矿5000t/d采选工程地质灾害危险性评价

Risk assessment of geological hazards in 5000t/d mining and mining of nine copper and gold deposits in Dexing

在研究了德兴九区铜金矿区地质环境特征的基础上,详细研究了区内的地质构造、节理裂隙、采矿等及其对边坡稳定性的影响程度,认为九区铜金矿地质灾害类型为崩塌、塌陷类的崩塌和采空塌陷,主要分布在陡切坡和采空区部位。预测区内工程切坡露采场北东和南切坡稳定性差,露采场北、北西和东切坡及枫树岭尾矿库主坝左坝肩等切坡稳定性相对较差,其余稳定性中等至好;工程区地基稳定性除露采场区局部、枫树岭尾矿库局部及废石运输公路局部等因采矿井巷及采空区和强风化岩等影响较差外,其余中等至较好。预测认为九区铜金矿采选工程建设引发或加剧及工程建设本身遭受地质灾害总体危险性中等,特殊情况下危险性大、威胁大;采选工程安全影响中等,特殊情况下安全影响大。拟建场地作九区铜金矿采选工程建设用地基本适宜。

Based on the geological environment characteristics of the copper gold mining area in the nine district of Dexing,the geological structure,joint fissure,mining and its influence on the stability of the slope are studied in detail.It is considered that the types of geological disasters in the nine zone are collapse,collapse and Goaf Collapse,mainly in steep slope and the slope.The position of the goaf.In the prediction area,the stability of the north and South cut slopes in the mining area is poor,and the slope stability of the north,North West and East cutting slopes and the left abutment of the main dam of the Maple Ridge tailing dam are relatively poor,and the remaining stability is moderate,and the local of the deexposed mining area in the engineering area,the part of the Maple Ridge tailing pond and the part of the waste rock Transportation Highway Other factors such as mining roadway and goaf and strong weathered rock are relatively poor,and the rest are medium to better.It is predicted that the construction of copper and gold mining in the nine area is caused by or aggravated,and the construction itself suffers the overall risk of geological hazard,and the danger is great and the threat is great under special circumstances.The safety influence of the mining project is medium,and the safety influence is great under special circumstances.The proposed site is basically suitable for the construction of nine districts of copper gold mine.