Retractable guniting wall protector and construction method thereof
A shotcrete and shrinkage technology, which is applied in shaft equipment, earthwork drilling, wellbore lining, etc., can solve problems such as shotcrete wall cracking, and achieve the effects of avoiding cracking, simple and reliable processing and manufacturing technology, and stable physical and mechanical properties
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[0013] Such as figure 1 As shown, the shrinkable sprayed grouting wall protection device of the present invention is made up of two parts, a shrinkable device and a connecting device, wherein:
[0014] Described collapsible device is made of elastic tubular fan-shaped frame 1 and elastic ring pipe fitting 2; The thickness of the slurry wall is appropriate; the circular pipe fitting 2 is welded in the fan-shaped frame 1 .
[0015] The connecting device is that one end of the connecting rod 3 is provided with a collar 4, and the other end of the connecting rod 3 is connected to the bottom frame opening of the fan-shaped frame 1.
[0016] The four frames of the fan-shaped frame in the above embodiment are processed from low-alloy high-strength Q345B steel plates with good toughness and strong deformability; the above-mentioned circular pipe fittings are low-alloy high-strength Q345B steel circular pipes with good deformability.
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