5 results about "Low-impact development" patented technology

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 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.

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.