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文中通过方案比较论述了荣华二井利用现有的3号上层系统,增加必要的工程,开拓深部14号煤层的合理性。
Through the comparison of schemes, this paper discusses the rationality of Ronghua No.2 well using the existing No.3 superstructure, adding the necessary engineering and opening up the deep No.14 coal seam.