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概况云锡矿床为高中温热液交代矿床。上部为土状氧化矿,下部为坚硬致密的硫化矿。矿体产状复杂,零星分散。上盘为大理岩,夹一些白云岩,节理裂隙发育,岩石破碎,溶洞较多,渗透性好。下盘为花岗岩,裂隙不发育,不透水。氧化矿多采用方框进路的分层崩落法,硫化矿多用小中段空场法开采。云锡各矿都有上百年开采历史。范围广,井下四通八达,巷道总长2200余公里。采空区总数达数百个,总体积约1～2千万米~3 ,多已塌陷,部分塌陷至地表。属矽尘危害较小的矿山。长期以来,基
At a glance Yunyun deposit is high temperature hydrothermal ore replacement deposit. The upper part is earthy oxide ore, and the lower part is hard and dense sulphide ore. Complex shape of ore body, sporadic scattered. The upper plate is made of marble, with some dolomite sand, joints and fractures developed, the rock is broken, there are many karst caves and good permeability. Under the plate for the granite, the fracture is not developed, impermeable. Oxygen ore multi-box approach to the use of sub-level caving method, sulphide ore and more use of small and medium-sized open-field mining. Each mine has hundreds of tin mining history. A wide range of underground, extending underground, total length of 2200 km roadway. The total number of goafs up to hundreds of the total volume of about 1 to 2 million meters ~ 3, many have collapsed, and some collapse to the surface. Is a less dangerous mine dust mine. For a long time, base