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我队在处理后石兰哈达矿区ZK2/64号钻孔埋钻事故时,先用“提、拉、冲、打、顶”的办法均无效,后用反管的办法,但阻力大反不动.经党支部领导下的三结合攻关小组研究,采用爆断法取出了全部事故钻杆.爆断井内钻杆是兄弟单位的先进经验,与一般反管法相比,不但操作省力,可省去大量反丝钻杆,而且大大提高了工作效率.但经验介绍的是采用胶质炸药,特点是防水,爆炸力大,可在水中爆破,爆破筒可做得尽量小.在没有胶质炸药的条件下,使用普通硝铵类炸药能否适用?怎样解决防水问题?“一切真知都是从直接经验发
After our team handled the ZK2/64 drilling accident in the Shilan Hada mining area, the methods of “lifting, pulling, punching, hitting, and roofing” were all invalid. Afterwards, countermeasures were used but the resistance was high. Against the fact that the Party’s branch under the leadership of the three-integration research group research, using the explosion method to remove all the accident drill pipe. Breaking the drill pipe in the well is the advanced experience of the brother unit, compared with the general anti-tube method, not only the operation effort, A large number of anti-filament drill rods can be saved, and the working efficiency is greatly improved. However, experience has introduced the use of colloidal explosives, which are characterized by waterproof, explosive force, and can be blasted in water. The blasting drum can be made as small as possible. Under the conditions of explosives, can the use of ordinary ammonium nitrate explosives be applied? How to solve the problem of waterproofing?”All knowledge is made from direct experience.