高安村前-宜丰新庄多金属矿区是3次钻探施工的铜铅锌老矿区,前两次施工均因浅、中部地层岩溶发育、漏失、涌渣等严重问题的干扰,未达到目的而中途下马。1986年重新组织施工,采用“多级口径、泥浆护孔、快速穿过、套管隔离”的综合方案和钢粒、硬质合金、金刚石分层钻进的工艺方法,较理想地解决了施工的难题。后期进行的“上部大口径、下部小口径”全孔金刚石钻探工艺的研究试验,又使生产效益有了较大程度的提高。 Gao’an Village - Yifeng Xinzhuang polymetallic mining area is the three drilling of copper, lead and zinc old mining area, the former two were due to shallow, central strata karst development, leakage, slag and other serious problems of interference, did not achieve the purpose and halfway dismount. In 1986 reorganized construction, using “multi-level caliber, mud hole, fast through, casing isolation,” the integrated program and the steel, carbide, diamond stratified drilling process, the more ideal solution The construction of the problem. Later carried out “large diameter of the upper part, the lower part of the small diameter” "full-hole diamond drilling technology research and test, but also to a greater degree of production efficiency has been improved.