我们工作在粵湘边界的南岭、骑田岭、连阳等地一带,勘探上二迭统和上三迭统的煤系。整个工作地区的煤系很不稳定,地层厚度变化悬殊,可由几百米变化到几十米,常有分叉、尖灭、相变现象存在。同时,构造复杂,断层、褶曲发育,出露的地层往往残缺不全,支离破碎,不易建立正常的地层顺序。因而,在实际工作中常常把沉积的分叉、尖灭、相变,同地层的重复和缺失混为一谈。在岩煤层对比上也非常困难。为了对比岩煤层,往往象拉洋片一样,把钻孔柱状拉上去又拉下来,拉下来又拉上去,但分岐意见仍然存在,很难统一。根本原因就是论据不充分,说服力不强。这种情况的造成,则是由于对复杂的地质情况,缺乏详细综合分析研究。 We work in the border of Guangdong and Hunan Nanling, Qitian Ridge, Yang and other areas around the exploration of the Upper Triassic and Upper Triassic coal system. The entire working area of ​​the coal system is very unstable, the thickness of the disparity in the formation, can change from a few hundred meters to tens of meters, often bifurcation, pinch out, the phenomenon of phase change exists. At the same time, stratigraphic structures with complicated structures, developed faults and folds are often incomplete, fragmented and difficult to establish normal sequence of stratigraphy. Therefore, in practical work, the divergence, extinction and phase change of sediments are often confused with the repetition and absence of strata. It is also very difficult to compare rock and coal layers. In order to compare rock and coal seams, it is often the same as pull oceanic chips. The drill holes are pulled up and down, pulled down and pulled up again, but the divergent views still exist and are hard to unify. The fundamental reason is the argument is not sufficient, persuasion is not strong. This situation is caused by the lack of a detailed comprehensive analysis of complex geological conditions.