10 results about "Low-impact development" patented technology

The invention discloses a low-impact development measure planning method based on multi-objective optimization and comprehensive evaluation. The method comprises the following steps: collecting related data of a target area; constructing a rainstorm management model; determining an objective function, a decision variable and a constraint condition, and constructing a multi-objective optimization model based on a second-generation non-dominated sorting genetic algorithm; coupling the rainstorm management model with the multi-objective optimization model to obtain a coupling model, and performing iterative optimization on the coupling model to obtain an optimal solution set; determining a multi-target weight through an entropy weight method and an analytic hierarchy process, and comprehensively evaluating the optimal solution set according to the multi-target weight through an approximate ideal solution sorting method to obtain a low-impact development measure planning scheme; the objective function is determined based on the investment cost, hydrological control capability and environmental benefits of the target area. The method can effectively balance the multi-objective relation, achieves scientific planning of low-impact development measure layout, gives consideration to economic benefits, hydrological regulation and control and environment improvement, and can be widely applied to the technical field of urban planning.

The invention belongs to the technical field of urban rainwater management, and particularly relates to a low-impact development facility optimization layout system based on multi-objective optimization and uncertainty analysis. The system comprises a data acquisition and preprocessing layer, an uncertainty modeling and analysis layer, a multi-target collaborative optimization layer, an intelligent decision support layer and a dynamic adaptation and optimization layer. The data acquisition and preprocessing layer serves as a basic support layer of the system and is responsible for acquisition, cleaning, standardization and integration of multi-source heterogeneous data; the uncertainty modeling and analysis layer serves as a core theory layer of the system and establishes a ternary integrated uncertainty processing framework fusing fuzzy logic, the probability theory and machine learning; the multi-objective collaborative optimization layer serves as an algorithm engine layer of the system and integrates a hybrid optimization technology of an adaptive evolutionary algorithm, machine learning and heuristic search; the intelligent decision support layer serves as an interactive interface layer of the system and provides personalized decision support service based on user preference learning; and the dynamic adaptation and optimization layer is used as a self-learning layer of the system and realizes online optimization and adaptive adjustment based on real-time monitoring data. The invention provides a low-impact development facility optimization layout system based on multi-objective optimization and uncertainty analysis.

This application belongs to the field of environmental engineering and water pollution control technology, specifically relating to an optimized layout method for low-impact development measures that integrates dynamic landscape hydrology theory. The method includes constructing a hydrological connectivity-land use coupling index to dynamically quantify the pollution transport potential of the landscape; objectively identifying the ecological critical threshold of this index based on machine learning and gradient analysis; establishing a multi-objective optimization model with hydrological benefits and costs as objectives and the threshold as a safety constraint; dynamically simulating the underlying surface and hydrological connectivity after implementation for each candidate scheme in the optimization solution, recalculating the index value to verify whether the constraints are met; and finally outputting the Pareto optimal solution set that satisfies the constraints as the optimized layout scheme. This application achieves positive effects in improving the ecological rationality of the scheme, ensuring long-term safety, and realizing automated and efficient decision-making.

The utility model relates to the technical field of sponge city low-impact development, and particularly discloses a concave green space structure which comprises a terrace, a concave land is formed in the surface of the terrace, a concave green space body is filled in the concave land, an overflow well is arranged at the top end of the concave green space body in a penetrating mode, and an overflow cover is assembled at the top of the overflow well. Blind pipes symmetrically communicate with the positions, close to the bottom end, of the two sides of the overflow well, and the blind pipes penetrate through the downwards-concave green land body and extend to an external drainage system. By laying the anti-seepage layer, the anti-seepage performance of the sunken green space structure can be improved, and the situation that the stability of an underground soil matrix is easily damaged due to rainwater seepage is avoided; by arranging the gravel layer, the first gravel layer and the second gravel layer, double-stage filtration is formed, the double-layer structure achieves the double functions of physical filtration and hydraulic buffering, and the water flow impact force can be effectively reduced. The problems that in a traditional concave greenbelt, cracks are prone to being generated under the action of soil freeze-thaw cycle, the seepage-proofing efficiency of geotechnical cloth is prone to being rapidly attenuated, and water retention, weed suppression and ecological restoration capacities are lacked are solved.

The present invention relates to a technology for manufacturing an LID concrete half structure box capable of improving a core function by applying general vegetation soil, while excluding the use of multi-functional vegetation soil, to a tree box filter, a planter box, and the like in the field of low-impact development filtration facilities. The technology for manufacturing an LID top-down / bottom-up structure box applies a pre-treatment technology which can treat road rainfall runoff in a top-down / bottom-up manner and can be applied to an LID tree box filter, an LID planter box, and the like, the top-down / bottom-up LID structure box improving the underlying technologies for water drainage, tree planting, and pollution reduction by using general vegetation soil.

The invention relates to the technical field of urban planning and rainwater management, and discloses a land parcel scale low-impact development planning verification method, system and device and a medium, and the method comprises the steps: determining a comprehensive runoff coefficient threshold value which needs to be reached by a land parcel based on a given land parcel low-impact development management and control target; obtaining planning layout parameters of the land parcel and hydrological parameters corresponding to various underlying surfaces in the land parcel; according to the planning layout parameters and the hydrological parameters, calculating through a runoff coefficient synthesis model to obtain an expected comprehensive runoff coefficient of the land parcel; and comparing the expected comprehensive runoff coefficient with the comprehensive runoff coefficient threshold value, and judging whether the planning scheme of the land parcel meets the low-impact development management and control target or not according to a comparison result. According to the method, existing indexes (such as green land rate and building density) which must be declared in a planning scheme are directly used as input, extracorporeal circulation of examination is avoided, and the management efficiency is greatly improved.

An urban pipe network system and low-impact development integrated road system address the existing issues of long construction periods, difficulty ensuring road quality, prone to waterlogging, and high green space irrigation costs. It comprises a roadway module assembly, a sidewalk module assembly, and a green space module assembly. A basic roadway module is installed above the roadway base, with a stabilization layer, a protective layer, and an asphalt concrete layer laid layer by layer above the roadway. A basic sidewalk module is installed above the sidewalk base, with a filter layer and permeable concrete layer laid layer by layer above the sidewalk. A permeable green space module is installed above the green space base, with a pedestrian walkway installed above the green space water collection slope. Its rational design and compact structure facilitate installation and laying, shorten the construction period, ensure construction quality, reduce environmental pollution, lower irrigation costs, and facilitate the installation, maintenance, and upgrading of pipelines beneath the road surface.

A low impact development plant box built on a road and / or residential area, comprising a plurality of segment boxes each having any one of curved, straight line, and slanted shapes in such a way as to provide a structure with a given shape when coupled to one another and an accommodation space formed therein to accommodate planting soil in which a plant is planted.

This invention discloses a method for optimizing and upgrading urban stormwater drainage systems. The method includes establishing a model input database for the area to be upgraded; establishing a two-dimensional surface hydrodynamic model and a one-dimensional stormwater drainage network hydraulic model; constructing a bidirectional coupled exchange model to simulate the surface runoff confluence and underground drainage transport process; identifying weak links in the system; and implementing drainage zoning optimization, pipe diameter adjustment, and the addition of drainage channels or outlets to address issues such as excessively long drainage paths, excessively large zoning areas, insufficient local discharge outlets, and insufficient pipe diameter capacity. Based on this, multiple low-impact development (LID) facility deployment schemes are constructed and comprehensively evaluated to select the optimal urban stormwater drainage system upgrade scheme. This method can simultaneously identify the operational status of the underground stormwater drainage network and the response to surface water accumulation, improving the accuracy of identifying the urban flooding formation process and key weak links. By considering the optimized system and the deployment of LID facilities in a unified manner, it achieves simultaneous optimization between improving end-of-pipe discharge capacity, reducing emissions at the source, and regulating the process.

The utility model discloses a modular rain garden, including a water storage and filtration module and an overflow module arranged in an array form, the water storage and filtration module including a bottom plate and a side plate connected end to end along the edge of the bottom plate and vertically enclosed, the side plate including a first mounting frame and a perforated flat plate, the mounting frame is fixed with three layers of perforated flat plates from top to bottom, the space enclosed by the perforated flat plates of each layer is sequentially arranged as a planting soil layer, a gravel drainage layer and a water collection layer from top to bottom; the overflow module includes an overflow cover and a box body sleeved under the overflow cover, the overflow cover includes a perforated cover body at the top and a cover body adapted to the perforated cover body, a layer of impermeable membrane is laid on the side plate of the box body, and a water pipe interface is reserved on the lower side of the box body; the water storage and filtration module and the overflow module are both arranged on a concrete foundation. The application is applicable to low-impact development rainwater systems for buildings and community courtyards, makes up for the deficiencies of the prior art, and provides a safe, reliable and convenient modular installation system for rain gardens.