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Coal Seam Pressure Relief and Permeable Mechanical Cave Making Technology
Release time:
2022-11-09
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Cave-making technology of coal seam pressure relief and permeability enhancement machinery
- Cave-making technology of coal seam pressure relief and permeability enhancement machinery
Mechanical hole-making pressure relief and increased permeability drilling technology and equipment, in a broad sense, refers to the reaming process of using a variable-diameter drill bit to open the blade at any depth position in the drill hole for reaming and cutting. Usually, two modes of high-pressure liquid drive and hydraulic cylinder mechanical core rod drive are adopted. Accurately speaking, mechanical hole making refers to the hole making process independently developed by Shandong Yikuang Science and Technology, in which the blade of the hole making and reaming device is actively opened and closed by pushing the drill pipe core rod through a hydraulic rotary cylinder.
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Key words:
Seam, machinery, reaming, process, open, drive, cylinder, hydraulic, speaking, drilling
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