Foundation pit slope soil-nailing dewatering support construction method
A construction method and foundation pit edge technology, which can be applied in basic structure engineering, excavation, construction, etc., can solve problems such as difficulty in pumping water, difficulty in forming holes, and difficulty in forming trenches, so as to improve construction quality, improve stability and shorten construction period Effect
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[0040] Such as figure 1 Shown, foundation pit side slope soil nailing dewatering support construction method of the present invention, it adopts following steps to be:
[0041] S1, make hollow cannula, combine figure 2 and Figure 2A As shown, the manufactured hollow cannula 100 has an injection hole 110 at the tube head, and side injection holes 120 with valves 130 are distributed on the side wall.
[0042] The hollow cannula can be steel pipe, hard plastic pipe or soft plastic pipe. combine figure 2 and Figure 2A As shown, the hollow cannula 100 can be a one-piece structure or a split structure. For the one-piece mechanism, the fabrication is relatively simple, only need to flatten the front end of the hollow cannula 100 and leave the injection hole. For the split structure, a tip 101 with an injection hole is connected to the front end of the hollow cannula 100 . The end of the hollow cannula is a single-taper hole structure or a flat-mouth single-hole structure (...
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