Original soft clay hollow cylinder sample inner core cutting device
A technology for hollow cylindrical samples and soft clay, which is applied in the field of core cutters for hollow cylindrical samples of undisturbed soft clay, which can solve problems such as hindering drilling, increasing sample disturbance, and lack of support points, so as to reduce propulsion resistance , to avoid the effect of secondary adhesion
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[0022] As shown in Figures 1, 2, 3, 4, 5, 6, the original soft clay hollow cylindrical sample core cutter has a protective tube 4, the upper end of the protective tube 4 is provided with a cutting edge 15, and the lower end of the protective tube 4 passes through the protective tube Bottom support-protective tube positioning screw 8 and protective tube-protective tube bottom support connecting screw holes 17 are connected to the detachable protective tube bottom bracket 7, and the detachable protective tube bottom bracket 7 is provided with a detachable earth holding bracket 5 for detachable soil holding The support 5 is provided with a pressure relief hole 16, and the main drill bit 1 is provided in the middle of the protective cylinder 4. The main drill bit 1 is composed of a spiral drill bit 11 and an inner edge blade 12, and is connected with a drill pipe 10, which passes through the detachable soil holder 5. The detachable bottom bracket 7 of the protective tube is fixed by t...
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