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松桃锰矿,钻探工程质量最突出的问题,就是孔斜指标很难达到地质要求,在几个大矿区中,杨立掌矿区算是最有代表性的。1978—1979年两年中,共施工钻孔19个,多数钻孔因为孔斜超差降低钻孔等级,虽然当时在操作工艺上也采取了很多措施,又颁发了“预防孔斜的技术措施”等规章,也未从根本上解决,钻孔弯曲仍然很严重.为解决孔斜和矿心采取率这两个主要指标,改合金钻进为金刚石钻进.随钻探工艺的改革,矿心采取率完全达到地质要求,可钻孔弯曲仍未解决,又出现了新的情况——即钻孔方位角的扭转方向与合金钻进相反.带着
Songtao manganese ore, the most prominent issue of the quality of drilling engineering is that it is difficult to meet the geological requirements of oblique hole index. In several large mining areas, Yangliatang mining area is the most representative. During the two years from 1978 to 1979, a total of 19 boreholes were drilled. Most boreholes reduced the borehole grade because of the deviation of the borehole inclination. Although many measures were taken in the operation process at the time, the technical measures "And other regulations, has not been fundamentally resolved, drilling bending is still very serious.In order to solve the hole oblique and the core take rate of these two main indicators, change the diamond into diamond drilling technology .With the drilling technology reform, mining heart Take the rate to fully meet the geological requirements, drilling bending can not be solved, there has been a new situation - that the azimuth of the drill hole reverse the direction and alloy drilling.