Study on the optimization of stope structure parameters under the protection of top leaf;

Rock mechanics analysis of structural parameters of stope using back-filling method;

Drilling and blasting test under condition of increased structural parameters of stope in Meishan Iron Ore Mine

Proposes on optimization of stope structural parameter in deep at Meishan Iron Mine;

The development trend of sublevel caving method without sill pillar is increasing the stope structural parameter, so the problem of how to make transition of stope structural parameter from ordinary space to large space is existed in many mines.

In view of the low technical-economical indexes caused by drilling way stability and unsuitable stope structural parameters of sublevel caving without sill pillar in Chambishi Copper Mine,improvement measures were put forward.

Considering the problems caused by the complex factors which affect stope structural parameters choice,the paper put forward a new synthetic assessment method based on the AHP(analytical hierarchy process) and the fuzzy mathematics method to evaluating stop structural parameters.

Meanwhile he introduces the leaching technique and characteristics and the parameters of stope structure.

Adopting rational stope structure parameters is an important measure to exploit the deep deposit safely and to guard against the terra-pressure damages.

Optimization of stope structure parameters of deep deposit prone to rockburst is discussed.