Drilling and grouting combined device for grouting reinforcement of water-rich sand stratum and construction technique
A technology of grouting device and composite device, which is applied in soil protection, infrastructure engineering, construction, etc. It can solve problems such as difficult sand layers, retention, and difficulty in forming holes, so as to improve permeability, achieve stability, and reduce infiltration sexual effect
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[0041] The present invention will be further described below in conjunction with the drawings and embodiments.
[0042] The structure of the drilling and injection composite device mainly includes: a multi-section grouting pipe 1; a grout containing body that is sleeved on each section of the grouting pipe 1, and both ends are tied to the grouting pipe 1, and can expand after being filled with grout ( That is, slurry bag Ⅰ3, slurry bag Ⅱ6, slurry bag Ⅲ8); the slurry bag is made of cloth in a bucket shape, and the two ends are bound on the grouting pipe. When drilling, it is superimposed on the grouting pipe. After the grout is injected, it will slowly open, and it will expand during the grout.
[0043] In order to satisfy the requirement of grouting into the grout container, a grout hole 16 is cut on each section of the grout pipe 1; to prevent the loss of the grout entering the grout container, the two ends of the grout container are tied to the grout pipe 1 Iron binding tape 5 a...
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