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在为地质目的服务的多种技术方法中, 钻探方法是一个主要而又最直接的手段.因此,钻探施工的质量直接关系到地质找矿效果.根据钻探规程要求,岩心钻探的质量指标包括:1.岩心采取率;2.钻孔弯曲度;3.孔深误差;4.原始报表;5.简易水文观测;6.封孔.在上述六项指标中,岩(矿)心采取率和钻孔弯曲度是最重要的指标.而钻孔弯曲度又直接关系到钻孔终孔点是否能落在设计的矿层上,因此,在地层比较复杂的矿区,为了把钻孔打直,使终孔点(又称靶点)落在规程规定的范围内,(使钻孔弯曲度不超过
The drilling method is the most important and direct method among the many technical methods for geological purposes, therefore, the quality of drilling construction is directly related to the geological prospecting results.According to the drilling regulations, the quality indicators of core drilling include: 1. Core take rate; 2. Bending degree of hole; 3. Hole depth error; 4. Original report; 5. Simple hydrological observation; 6. Sealing. Among the above six indexes, Boring curvature is the most important index.Brittle curvature is directly related to whether the drilling hole can fall on the design of the mine, so in the more complex strata mining, in order to drill straight, End hole point (also known as the target point) falls within the scope of the rules, (so that the drilling curvature does not exceed