Anti-fall anti-return and anti-overflow structure and inspection well and method
An anti-flooding and anti-falling technology, which is applied to underwater structures, infrastructure engineering, drainage structures, etc., can solve the problem of being transferred into the well, being washed away by water, not being able to solve water leakage, and short-term heavy rainfall and other problems, to achieve the effect of convenient fixing and easy taking of the large cover
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Embodiment 2
[0060] The difference between this embodiment and Embodiment 1 is that the well circle includes at least two sections of support frames arranged along the wellhead wall, and the derrick is a cross plate or a hollowed-out support plate, and the derrick is also installed by rotating the method. Very convenient.
[0061] A method for installing an anti-fall and anti-backflow structure, the specific steps are as follows:
[0062] 1) Set at least two sections of support frames for supporting the derrick on the wellhead wall of the inspection well 1;
[0063] 2) Install the derrick through the support frame;
[0064] 3) Set the boom passing through the derrick, pass through the large cover plate and the small cover plate in sequence at the lower end of the boom, and set the supporting device to support the small cover plate.
[0065] A method for disassembling an anti-fall and anti-backflow structure, the specific steps are as follows:
[0066] 1) After removing the well cover, t...
Embodiment 3
[0069] The difference between this embodiment and Embodiment 1 is: there is an opening in the middle of the large cover for easy access to the large cover; In the opening of the cover plate, correspondingly, the size of the opening increases gradually, and the thickness of the small cover plate is greater than that of the large cover plate, so as to block the opening of the large cover plate. At the same time, when entering the inspection well, push the small cover plate open , take out the large cover through the opening.
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