A construction method of lid biological retention ditch in urban road green belt

Abstract

The invention provides a urban road greenbelt LID (low impact development) bioretention trough construction method. The construction method sequentially comprises the following steps: excavating grooves and pits; installing a plastic product inspection well and a municipal pipe network connecting pipe; implementing concrete trench wall construction; paving sand on a basement; paving an impermeable membrane; paving and adding a pebble bed; installing an HDPE (high-density polyethylene) perforated pipe and filling the perforated pipe with pebbles; paving and illuminating a permeable geotextile on lower layer; adding and paving a sand filter bed; paving and illuminating a permeable geotextile on upper layer; installing curbs at two sides; implementing back-filling with a planting soil layer; installing rainwater grates and well coves and implementing construction of a gravel block belt; planting plants; and implementing cleaning as well as acceptance and inspection. According to the construction method provided by the invention, a conventional drainage mode, adopted by urban roads, of direct discharging at a source and centralizing at an end, is changed, and a problem on drainage is solved; meanwhile, by planting the rainwater-cultivated plants in the bioretention trough in normal times, rainwater is utilized; and a urban heat island effect is solved and effects of lighting urban and beautifying environment are achieved.

Description

technical field [0001] The invention relates to the technical field of rainwater treatment, in particular to a construction method for a LID biological retention ditch in an urban road green belt. Background technique [0002] With the vigorous development of cities, urban development is facing huge environmental and resource pressures. At the same time of urban development and construction, the ecological ontology has been destroyed to a certain extent, the hydrological laws have been disrupted, and water ecological damage, water safety risks, Water environment pollution and water shortage and other problems, so the concept of "sponge city" construction came into being. [0003] However, the traditional urban belt road green belt bioretention ditch is accustomed to the urban construction mode of overcoming and transforming nature, with "quick elimination" and "end-centralized" control as the main planning and construction concepts, resulting in serious urban diseases and ec...

AI Technical Summary

Problems solved by technology

[0003] However, the traditional urban belt road green belt bioretention ditch is accustomed to the urban construction mode of overcoming and transforming nature, with "quick elimination" and "end-centralized" control as the main planning and construction concepts, resulting in serious urban diseases and ecological crises, and Sewage is discharged directly from the source to the end, and the centralized drainage method is adopted, and the maintenance cost is relatively high

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