Combined rainwater seepage well and construction method

Abstract

The invention discloses a combined rainwater seepage well and a construction method, belongs to the field of drainage projects, and particularly relates to a structure for discarding initial rainwater, adjusting the rainwater and supplying underground water by seeped rainwater. The combined rainwater seepage well mainly comprises a shaft, a pipe and a well body, wherein the shaft is positioned on the lower portion of the well body; and the pipe is connected with the well body. Seepage wells are arranged on a rainwater pipe at intervals of 1-3 inspection wells, rainwater is collected through the pipe during raining and seeps into the ground through the seepage well, the flow of the rainwater is reduced at the source, an effect of shifting peaks and adjusting storage is achieved, and waterlogging caused by accumulated water on the ground is reduced. The shaft is filled with filter materials, a slime pit is arranged on the bottom of the well body, a filter screen is arranged on the bottom of the slime pit, and the rainwater is filtered by the filter materials, seeps into the ground and supplements the underground water. The seepage well is constructed in a combined mode, the well body on the upper portion of the seepage well is constructed by using a down-top method, different sections of the shaft on the lower portion of the seepage well are constructed one by one by using a top-down method, and the construction difficulty and the manufacturing cost are greatly reduced.

Description

technical field [0001] The invention relates to a combined rainwater infiltration well and a construction method, belonging to the field of drainage engineering, in particular to a structure and a construction method that can be used for initial rainwater abandonment, rainwater regulation, and groundwater replenishment by rainwater infiltration. Background technique [0002] Most of the urban drainage is discharged through hidden pipes, and the branch pipes collect rainwater and collect it to the main pipe, and finally to the main pipe for discharge into the water body. The construction standards of rainwater pipelines in the old urban areas of many cities in my country are relatively low. In recent years, with the intensification of extreme weather phenomena, waterlogging has occurred to varying degrees, causing serious losses. Urban drainage systems are related to urban safety. Urban waterlogging The issue of disasters has been paid more and more attention by relevant depar...

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Problems solved by technology

However, because the seepage pit is dug deeper, the construction is more difficult. Generally, the bottom of the well is only dug 1 to 2 meters deeper. The depth of the sand and gravel layer is relatively shallow, and the volume of rainwater storage is small, which basically does not play a role in regulating and storing. Rainwater infiltration is also not good

Infiltration wells specially used for rainwater recharging to replenish groundwater. Recharging pipes are installed in deep wells, and the periphery of the recharging pipes is filled with filter materials. This kind of recharging well has a better effect, but it is generally used in concentrated recharging, roads, etc. The rainwater along the line cannot be effectively utilized, and the recharge wells are constructed by drilling rigs, and the installation of recharge pipes is difficult and expensive

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