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《China Mining Magazine》 2012-S1
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Research on technology of efficient mining and security in large-undersea metal deposit

CHEN Yu-min,XIU Guo-lin(Shandong Gold Group Co.,Ltd,Jinan 250100,China)  
Sanshandao Gold Mine is the first under-sea metal mine in China,so it is necessary to develop the key technology of efficient mining and security in the large metal deposit.A series of studies are done,such as the three-dimensional survey of the seabed rock mass,the three-dimensional geostress field test in the seabed deposit and the visualizing quality classification of the rock mass.At the same time,a simulation platform of the submarine metal deposit mining is developed,and the mechanism of water inrush is explored during seabed mining.Furthermore,the critical depth of the Security impermeable layer is determined,and a new continuous mining method of overall exploitation patterns and alternate room-and-pillar mining is introduced in the seabed deposits.In the meantime,the safety warning system of deformation in rock mass,and the microseismic of rock rupture and the index value of water inflow are set up,as well as the emergency measures and contingency plans of water-related disasters is put forward.With all the above researches,the seabed resources are safely mined and better technical and economic indicators are acquired.
【CateGory Index】: TD807
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