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机械工业部重型矿山总局委托江苏省机械工业厅于1984年12月21～23日在南京市召开了“LCX—12型长楔齿滚刀”鉴定会。 LCX—12型长楔齿滚刀系洛阳矿山机械研究所、南京遵义机械厂、两淮特凿公司一处和上海交通大学联合设计、研究、试验而成功的。在谢桥矿东风井φ3米超前孔表土钻进试验中,整盘刀进尺达305.52米;总钻进时间512小时,纯钻进时间369.25小时,纯钻进效率达72％;创造了一次连续钻进204米和一昼夜进尺33.4米的全国记录,深受用户欢迎。并受到与会代表的高度赞赏。
Ministry of Machinery Industry Heavy Mine General Administration commissioned the Jiangsu Provincial Department of Machinery Industry in December 1984 December 21 ~ 23 held in Nanjing, “LCX-12-type wedge hob” appraisal. LCX-12-type wedge hob cutter Luoyang Mining Machinery Institute, Nanjing Zunyi Machinery Factory, a sink and a special joint venture with Shanghai Jiaotong University joint design, research, test and success. In the Xieqiao Mine Dongfeng Wells drilling hole φ3 meters ahead of the hole drilling test, the whole disc knife footage of up to 305.52 meters; total drilling time of 512 hours, the pure drilling time of 369.25 hours, the pure drilling efficiency of 72%; to create a continuous Drilling 204 meters and a day and night into the national record of 33.4 meters, welcomed by users. And by the delegates highly appreciated.