Abstract: Combined with technical measures of drainage control of the upper strata and within closed loop, of Quaternary system slope stripping and of bedrock controlled blasting,  the embedded control two-shot grouting curtain technology is introduced to stop the pressure water of the grit scree of Quaternary system layer overlying iron ore.By using this technology, the problem of mining under the pressure water of Quaternary system layer in open pit mine has successfully been resolved.

Key words: Open pit, Pessure water of quaternary system layer, Embedded grouting curtain, Mining method