An anti-fall and anti-backflow structure, inspection well structure and method

Abstract

The invention discloses an anti-fall anti-return and anti-overflow structure and an inspection well and method. The structure comprises a derrick arranged on the wellhead wall of the inspection well in a manner of being parallel to a well lid, wherein the derrick is fixed through a well loop fixed on the wellhead wall; a large cover plate is arranged below the derrick; an opening through which the large cover plate is conveniently fetched is formed in the middle of the large cover plate; a small cover plate is arranged at the lower part of the large cover plate; the derrick, the large cover plate and the small cover plate are connected through connecting structures. Due to the arrangement of the well loop, the large cover plate and the small cover plate are prevented from continuously moving upwards, continuous rise of rainwater is prevented, and due to the arrangement of the well loop, the derrick and the large cover plate, pedestrians are prevented from accidentally dropping from the wellhead on a rainy day; moreover, due to the well loop taking an approximately C shape, the derrick can be effectively fixed, drop of the well lid or other people or objects can be avoided with the cooperation of the large cover plate and the small cover plate, and the two cover plates are effectively prevented from continuously moving upwards.

Description

technical field [0001] The invention relates to a rainwater inspection well, in particular to an anti-falling and anti-backflow structure, an inspection well structure and a method. Background technique [0002] At present, the phenomenon of urban waterlogging is very prominent in major cities across the country. Under this background, the state has also introduced relevant policies such as sponge city construction. [0003] Through the research on the causes of urban waterlogging, it is found that there are two main causes of waterlogging: [0004] First, the short-term rainfall is heavy, and the capacity of drainage pipes is insufficient. [0005] Second, the large amount of water leaks from the pipe network, causing a large amount of water to accumulate on urban roads. [0006] In particular, the second reason is more harmful. Once the pipe network leaks, the manhole cover of the inspection well is jacked up, and passers-by cannot see the situation under their feet. Som...

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Problems solved by technology

[0004] First, the short-term rainfall is heavy, and the capacity of drainage pipes is insufficient

[0005] Second, the large amount of water leaks from the pipe network, causing a large amount of water on urban roads

[0006] In particular, the second reason is more harmful. Once the pipe network leaks, the manhole cover of the inspection well is jacked up, and passers-by cannot see the situation under their feet. Sometimes they are transferred into the well and are washed away by water. There are few structures that can prevent people or objects from falling from the wellhead of the inspection well at the same time. Even if there are, most of them are devices for preventing the manhole cover from falling into the well, and this structure can not solve the problem of water leakage.

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