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看了“地質与勘探”第11期所載一○六队藉福恩同志写的“用生鉄块卡取岩心的方法介紹”一文后,觉得有些問題,尚值得研究。首先作者在文章里沒有提明用生鉄块卡取岩心适应于什么条件,而它与目前广泛应用的河砂卡取岩心,在作用上又有什么不同。同时很难理解,生鉄块卡取岩心在所有的条件下都是适宜的。因为岩心卡塞物的作用是当每囘次进尺終了时,由鑽杆內投入一定数量不同規格的卡塞物,使其挤夾于井底岩心柱与鑽头壁之間,加上冲洗液的冲击作用,使卡塞物紧紧的卡住岩心柱,使其折断,將岩心完整的采上来不致中途脫掉。由此可見,岩心卡塞物的选擇,应以不影响鑽进工作并保証岩心柱全部无損的采取上来为原則,同时还要考虑經济适用,易加工等方面的条
After reading the article entitled “Introducing the Method of Taking a Core with a Health Card” by Comrade Fuin, contained in the 11th issue of “Geology and Exploration” No. 11, I feel that there are some problems that are still worth studying. First of all, the author does not specify in the article what conditions are suitable for the core to be taken with the raw block card, and what is the difference in function between the core and the currently widely used river sand card. At the same time it is hard to understand that the raw core card is suitable for all conditions. Because the role of the core plug is when the end of each footage, put into the drill pipe by a certain number of different specifications of the jam, it squeezed between the bottom of the core column and the drill bit wall, plus the washing liquid Of the impact, so that the jammed tightly stuck core column, so that it broken, the core of the whole mining up will not take off halfway. Thus, the choice of core plug should not affect the drilling work and to ensure that all non-destructive core column to take up as the principle, but also consider the economic application, easy processing and other aspects