A blind ditch fine design method based on GIS

By automatically identifying the ditch network through the GIS hydrological analysis module and combining it with measured flow data, the problem of relying on manual experience in traditional blind ditch design has been solved. This has enabled more refined blind ditch design and accurate calculation of engineering quantities, thereby improving the efficiency and safety of the drainage system.

CN122365631APending Publication Date: 2026-07-10POWER CHINA KUNMING ENG CORP LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
POWER CHINA KUNMING ENG CORP LTD
Filing Date
2026-03-11
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Traditional blind drain design methods rely on manual experience, resulting in blind drain layouts that deviate from actual hydrological channels, low drainage efficiency, distorted engineering quantity calculations, and a lack of scientific quantitative support, making it difficult to meet the refined design requirements of modern engineering.

Method used

A GIS-based refined design method for blind drains is adopted, which combines the hydrological analysis module of the geographic information system to automatically identify the ditch network, calculate the length of blind drains through DEM, and perform accurate flow estimation and segmented design based on measured flow data, thereby realizing the automated output of engineering quantities.

Benefits of technology

It improves the scientific and precise design of blind drains, ensures the rational layout of drainage systems, reduces engineering cost deviations, and enhances engineering safety and long-term stability.

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Abstract

This invention discloses a GIS-based refined design method for blind drains, relating to the field of geotechnical engineering technology. The method includes the following steps: acquiring topographic data of the target area and constructing a Digital Elevation Model (DEM) based on the topographic data; performing hydrological analysis based on the DEM, extracting the gully network, and distinguishing between main gully lines and tributary gully lines; determining the blind drain layout scheme based on the gully network, where the main gully lines correspond to the locations of main blind drains and the tributary gully lines correspond to the locations of tributary blind drains; calculating the three-dimensional surface length of the blind drains along the actual terrain in the layout scheme based on the DEM; and performing engineering quantity statistics and output based on the three-dimensional surface length. This method deeply integrates the hydrological analysis module of a Geographic Information System (GIS) with blind drain engineering design, achieving automation and precision from gully identification to engineering quantity calculation.
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