Construction method of all-casing rotary jet grouting pile
A construction method and technology of spraying piles, applied in sheet pile wall, foundation structure engineering, construction, etc., can solve problems such as waste, and achieve the effects of easy installation and operation, reduced penetration, and reliable pile formation.
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[0016] The construction method of a full-pipe rotary jet grouting pile of the present invention will be further described below in conjunction with the drawings and specific embodiments.
[0017] As shown in the figure, a construction method of a full-pipe rotary jet grouting pile is characterized in that the construction steps are as follows:
[0018] Step 1: With the center of the hole as the center of the circle, insert the prefabricated steel structure casing with a diameter slightly larger than the designed pile body into the ground until it is 500mm below the design elevation;
[0019] Step 2: Positioning the drilling rig. Move the jet grouting pile machine to the designated pile position (the center of the casing), align the drill bit to the center of the hole position, and level the drill rig at the same time, and place it smoothly and horizontally. The verticality deviation of the drill rod is not more than 1% to 1.5%. After being in place, first perform a low pressure (0.5...
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