Identification and Correction Method of Topological Relation of Urban Drainage System Based on Drainage Model

Abstract

The invention discloses a method for identifying and correcting topological relationship problems of an urban drainage system based on a drainage model; the steps are as follows: step 1, screening the existing GIS data of the drainage system to find out doubtful data and missing data; step 2, checking all doubtful data The data label is identified; step 3, assign and identify all missing data; step 5, update the existing drainage system GIS data; step 6, export the updated drainage system GIS data. The application of the invention can complete the identification of abnormal topology data of drainage systems of different scales and the automatic assignment of missing data in a short time, and then can quickly establish a runnable topology model network.

Description

technical field [0001] The invention relates to the technical field of computer-aided design, in particular to a method for identifying and correcting topological relationship problems of an urban drainage system based on a drainage model. Background technique [0002] Under the background of the intensification of global extreme weather and the continuous improvement of my country's urbanization level, the urban drainage system is facing unprecedented challenges. The use of digital drainage model is a technical means commonly used at home and abroad. my country began to explore and practice from the beginning of this century, and gradually developed to the present, most large and medium-sized cities have established urban drainage models of a certain scale. In the future, there will be more and more drainage models in the drainage industry. [0003] The construction of a drainage mathematical model requires the use of a large number of drainage network GIS data with comple...

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Problems solved by technology

[0005] 1. Due to the large number of pipelines in the urban pipe network, each drainage model modeling engineer has to spend a lot of time and energy on the identification and processing of basic topology data, which greatly affects the modeling efficiency of the drainage model

[0006] 2. Since there is no definite and unified judgment standard for topology anomalies, the final results of different engineers' manual topology inspections are inconsistent

[0007] 3. There are a certain amount of misjudgments and missed judgments in manual judgment, and it is difficult to confirm which data is the original data and which is manually modified in the later stage

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