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利用钻探取得的岩芯确定地下岩(矿)层或断裂面的产状,是勘探工作的重要内容之一.层面产状数据对正确认识深部地质构造,查明矿体形态和延伸情况有很大价值,同时对指导勘探工程布置和矿床开采也非常重要. 在覆盖层较厚的地区,通常用三点法求层面产状,即利用相近的三个钻孔穿过同一层面的标高计算岩(矿)层或断裂面的产状要素.三点法是以岩(矿)层或断裂面为平面做基础的,因此它不能反映钻孔之间层面产状的变化,况且还要打三个孔才能算出层面产状.当标志层不明显时,往往难以判定三孔穿过的同一层面,从而不能准确了解层
The use of cores obtained from drilling to determine the occurrence of the underground rock (ore) or fracture surface is one of the important aspects of exploration work.The data of level occurrence have a very important role in correctly understanding the deep geological structure and ascertaining the shape and extension of the ore body Large value, at the same time to guide the layout of exploration projects and mining is also very important.In the thicker areas, usually three-point method for the level of production, namely the use of similar three drilling through the same level elevation calculation rock (Ore) or fracture surface of the production elements of the three point method is based on the rock (ore) layer or fracture plane as the basis, it can not reflect the level of production between the borehole changes, but also to play three A hole to calculate the level of occurrence.When the flag is not obvious, it is often difficult to determine the three holes through the same level, which can not accurately understand the layer