A kind of forward type localized double-liquid grouting device and construction method
A technology of double-liquid grouting and construction method, which is applied in the field of geotechnical engineering, can solve the problems of inability to realize the reinforcement of strata with different depths, limited reinforcement range of grouting devices, and inability to secondary grouting, etc. Simple, inexpensive, wide-ranging effects
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[0039] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0040] A forward-type localized double-fluid grouting device, mainly composed of an auxiliary sleeve 12, a PVC grouting pipe, and a sealing grouting port 11. Wherein, the sealing grouting port 11 includes a grouting port 1 , a steel pipe 4 and a flange 2 connected in sequence.
[0041] The auxiliary casing is welded by the flange 2 and the steel casing 3, and its inner diameter is larger than the outer diameter of the PVC grouting pipe. The PVC grouting pipe is composed of a PVC pipe 6, a PVC pipe interface 7 and a grout stop cap 10, and the PVC pipe 6 and the steel pipe 4 are connected through a conversion interface 5. Plum blossom-shaped slurry outlet holes 8 are arranged on the PVC pipe 6 . The auxiliary casing 12 and the sealing grouting port 11 are connected through the flange 2 to realize sealing and shallow grouting. After the sealing grouting ...
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