Device for rotary drilling and coring to measure thickness of sediment of pile foundation and construction method
A technology of sediment thickness and pile foundation, which is applied in the direction of foundation structure engineering, foundation structure test, construction, etc., can solve the problems of increasing construction process risk, lengthy construction process, and relying on construction experience, etc., to reduce uncertainty risk and facilitate The effect of simple operation and construction process
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[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0030] The device for measuring the thickness of pile foundation sediment by rotary drilling and coring in the embodiment of the present invention includes a rotary drill pipe 1, a conical movable drill bit 2, a rotary drilling disc 3, and a backing plate 4; wherein:
[0031] The rotary drill pipe 1 is provided with multiple sections, and the number of sections of the rotary drill pipe 1 is set according to different pile foundation depths; the conical movable drill bit 2 is installed at the bottom of the rotary drill pipe 1, between the rotary drill pipe 1 and the conical movable drill bit 2 A hel...
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