Xinhuanet Jinan, November 6th (Reporter Lu Fuming) The Gulin-Lanling Iron Mine Exploration Site in Cangshan County, Shandong Province, reported on the 6th that a hole was drilled by the Third Geological Brigade of the Shandong Provincial Bureau of Geology and Minerals. 2188.28 meters, once again refreshed the domestic drilling rig with small diameter core drilling domestic drilling hole depth record.
According to the Shandong Provincial Bureau of Geology and Minerals, this iron ore mine is located in Cangshan County, Linyi City. It is a concealed deposit with a ore-bearing stratum below 600 meters and a mine cover of more than 600 meters. Due to the difference between the dip angle and the strike of the caprock and the strike, the borehole bending is difficult to control, and the quartzite containing the ore magnet is hard, the drilling time is low, and the construction is difficult.
The third geological brigade of Shandong Bureau of Geology and Minerals selected the domestic advanced drilling rig, adopted the diamond rope coring process, and adopted the multi-stage drilling structure and the full-eye drilling tool combination. It officially opened the drill on May 14 and completed the construction task in 177 days. The hole depth is 2182.28 meters.
Zhang Min, a member of the China Geological Exploration Engineering Committee and a professor-level senior engineer, said: "The drilling completed this time marks a new step in the drilling and construction technology of the Shandong Bureau of Geology and Minerals. An important technical support."
According to the Shandong Provincial Bureau of Geology and Minerals, since November last year, the Shandong Provincial Bureau of Geology and Minerals has used domestic drilling rigs to break the domestic hole depth record of small-diameter diamond ropes for four consecutive times. The depth of the first three holes is 2046. 02 meters, 2100.18 meters and 2109.81 meters.
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