OPTIMAL DESIGN OF DRAINAGE BOREHOLE LAYOUT IN YUANBAOSHAN OPEN PIT

Considering the stochastic characteristic of main hydrogeologic parameters in Yuanbaoshan open coal pit,a groundwater stochastic management model for optimal drainage borehole design is established.The result of the modeling shows the effect of stochastic characteristics of hydrogeologic parameters on the result of management modeling.It was found that the higher the parameters uncertainty and the management reliability level,the worse the management result.