Feasibility of open-pit mining on shallow coal pillars of mine

Research on the safety and stability of slope in open-pit mining is very significant to safety production of open mines.

Accor ding to the depth increasing of open-pit, the ore source of open-pit mining is decreasing day by day, at the same time, the condition of open-pit mining turns into very hard, so some open-pit mines start to transfer into the underground mining.

Building of analog virtual laboratory for open mining;

Preliminary exploration of the cause of land slip and its prevention and control in the open mining of metal mines;

Open mining aims at Sedimentary and Accumulative bauxite,underground mining is for Permian bauxite,Middle-upper carboniferous bauxite and mid-Carboniferous bauxite.

Control of blasting cost during opencast mining;

Using"the optimizing software package of the opencast mining design"optimizes the opencast boundary of the second deposit of the Huogeg Iron Ore in Wulate Rear-banner of Inner Mongolia.

On the basis of the exploitation actuality of a large-scale gold-copper deposit, the technical measures are suggested such as utilizing the potential reserves, conducting the technological transformations and increasing productivity to realize full opencast mining, and achieve a mining scale with gold of 16 t/a, copper ore of 20 000 t/d, total mining and overburden amount of 85 Mt/a.

Engineering geological character of goaf surrounding rocks and its damage control from underground mining to open pit mining in Zijinshan Gold Mine;

In the case of open pit mining with underground goaf,there are no uniform and normative calculations at present to determine the boundary pillar's safety thickness.

The effect of bench height on open pit mining is studied.