江西城门山铜矿马家沟尾矿库工程地质研究

Research on engineering geology of Majiagouwei ore reservoir in Chengmenshan Copper Mine,Jiangxi Province

城门山矿区大地构造位于下扬子-钱塘台坳,九江台陷中的瑞昌-九江凹褶断束带内,区域内褶皱、断裂发育。拟建尾矿库址位于长山-城门山背斜东段东南翼,地层主要由奥陶系至三叠系中统及第三系下统和第四系组成。矿区第四系工程性能极差-一般,志留系上统纱冒组、中统罗惹坪组工程性能好-较好;库区及边坡稳定性较好;尾矿库建成后不易引发地面塌陷及渗漏,属工程建设适宜区。

The Chengmenshan mining area is located in the lower Yangtzi-Qiantangtai Depression and Ruichang Jiujiang depression fold fault belt,and folds and faults are developed in the area.The site of the proposed tailings reservoir is located in the southeast wing of the eastern section of Changshan-Chengmenshan anticline,and the strata are mainly composed of Ordovician to Triassic middle Series,Tertiary lower Series and Quaternary system.Mining district The engineering performance of the fourth system is very poor-average,the engineering performance of the upper Silurian Shamao formation and the middle Series Luogaping Formation is good-good;The reservoir area and the slope have good stability.Construction of tailings pondIt is not easy to cause ground collapse and leakage after completion,and is an appropriate area for engineering construction.