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Method and equipment for raising urban water-logging prevention standard and controlling water pollution

A kind of urban and standard technology, applied in the direction of waterway system, sewage discharge, water supply equipment, etc., can solve the problem of simplification of drainage facilities, achieve the effect of avoiding house demolition, avoiding repeated investment, and improving waterlogging prevention standards

Inactive Publication Date: 2014-03-26
GUANGZHOU MUNICIPAL ENG DESIGN & RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a method and equipment that can improve urban waterlogging prevention standards and effectively control water pollution. There are disadvantages of single function of drainage facilities

Method used

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  • Method and equipment for raising urban water-logging prevention standard and controlling water pollution

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Experimental program
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Effect test

Embodiment 1

[0017] A watershed in Guangzhou covers an area of ​​12.47 square kilometers. The main channel of the watershed is 4.51 kilometers. The upper reaches of 2.62 kilometers are covered by underground channels, and the lower reaches of 1.89 kilometers are open channels, which flow into the Pearl River from north to south. The watershed is a combined drainage system. The combined pipes and canals along the line in the watershed merge into the main river. In the rainy season, the water is drained through the combined pipes and the main river. Sewage interception pipes are installed along the main river, and sewage interception facilities are installed at the outlet of the combined pipes and canals. According to calculations: the existing water conservancy waterlogging prevention standard for the main river is once in 11 years, the municipal drainage standard for the combined pipes and canals along the line is once in three years, the main drainage pipes in the basin are once in 0.5~1 ye...

Embodiment 2

[0024] This embodiment is another design scheme of Embodiment 1, adopting the present invention to set a deep main tunnel 2 with an inner diameter of 7.7 meters at 30 m below the ground in the direction of the downstream river channel from north to south, and set four connecting shafts 3 along the line, and four connecting shafts 3 The maximum inflows are 41 m3 / s, 5.2 m3 / s, 5.3 m3 / s, and 26 m3 / s respectively, and the storage capacity of the tunnel system is 106,000 cubic meters.

[0025] A pumping station 5 is set near the end of the main tunnel 2. The pumping station 5 is provided with a drainage shaft 4 connected to the main tunnel 2, an emptying pump set 7 and a flood pumping set 6. The emptying pump set 7 is installed in the drainage shaft 4. The emptying pipeline 71 is connected with the main tunnel 2, the outlet of the emptying pump set 7 is close to the top of the urban sewage channel 8, and the capacity of the emptying pump set 7 is 1.7 m3 / s; the flood discharge pump se...

Embodiment 3

[0030] This embodiment is another design scheme of embodiment 2. The present invention is adopted to set a deep main tunnel with an inner diameter of 7.7 meters in the direction of the downstream channel from north to south 30 m below the ground, set four connecting shafts 3 along the line, and four connecting shafts 3 The maximum inflows are 23 m3 / s, 4.8 m3 / s, 4.8 m3 / s, and 23 m3 / s respectively. The storage capacity of the tunnel system is 106,000 cubic meters. The capacity of the pumping unit is 1.7 m3 / s. Capacity 48 m3 / s.

[0031] In the method of controlling water pollution with the above-mentioned equipment, when the rainfall is small, the control valve 11 on the connecting shaft 3 is opened, and the combined sewage exceeding the capacity of the shallow sewage intercepting pipeline 1 enters the main tunnel 2 of the deep tunnel through the connecting shaft 3 for regulation and storage. After the rain, the emptying pump group 7 is turned on, and the combined sewage stored i...

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Abstract

The invention provides a method for raising the urban water-logging prevention standard and controlling water pollution. According to the method, a deep layer tunnel system is arranged at least 30m deep under the ground in the direction of a main drainage line in a drainage basin, a plurality of connecting vertical shafts are distributed above a main tunnel, the lower ends of the connecting vertical shafts are communicated with the main tunnel, the upper ends of the connecting vertical shafts are connected with an urban shallow layer sewage intercepting pipeline, a drainage pumping station is arranged in the position close to the main tunnel and an urban downstream water channel and beside an urban sewage drainage water channel, the main tunnel and the urban sewage drainage water channel are communicated by an emptying pump unit through a pipeline, and the tunnel channel and the urban downstream water channel are communicated by a floodwater drainage pump unit through a pipeline. By the utilization of spatial and temporal distribution of rainfall, scheduling operation is performed on the deep layer tunnel system, so that the main tunnel serves as a floodwater flowing channel to raise the water-logging prevention standard of the drainage basin when rainfall is large and serves as a converging sewage storage pond to play a role in control over water pollution when rainfall is small. According to the method for raising the urban water-logging prevention standard and controlling water pollution, the main tunnel for drainage is built in underground deep layer space, house removal caused by construction of ground facilities is avoided, and investment is reduced.

Description

technical field [0001] The invention relates to a method for urban waterlogging prevention and control and water pollution control, in particular to a method capable of improving waterlogging prevention standards and effectively controlling water pollution. Background technique [0002] With the expansion of cities and the increase of construction density, the rate of ground hardening is getting higher and higher, the original reservoirs, mountains, lakes, and fish ponds are gradually being occupied, and the sections of rivers are becoming narrower and narrower. The urban surface water storage and drainage The natural purification ability is greatly weakened, and the urban heat island effect leads to frequent extreme weather. Urban flooding and waterlogging seriously threaten the life and property safety of urban residents. Waterlogging has become a difficult problem for urban water control. [0003] The extremely high population density and urban construction density make t...

Claims

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Application Information

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IPC IPC(8): E03F1/00
Inventor 隋军汪传新牛樱陈贻龙王广华周建华李文涛
Owner GUANGZHOU MUNICIPAL ENG DESIGN & RES INST CO LTD
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