Method for determining ecological dredging range of water body pollution bottom sediment

A technology for ecological dredging and method determination, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as no practical method, lack of sediment pollution evaluation standards, etc., to achieve clear boundaries and clear dredging areas Effect
CN101962961BInactive Publication Date: 2012-01-25NANJING INST OF GEOGRAPHY & LIMNOLOGY
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING INST OF GEOGRAPHY & LIMNOLOGY
Publication Date
2012-01-25
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a method for determining ecological dredging range of water body pollution bottom sediment, comprising steps of: performing space gridding to a water area; setting a sampling point, and obtaining bottom sediment pollution level attribute information of the sampling point; determining the water area requiring dredging after excluding the water area without dredging; processing space interpolation to the bottom sediment attribute information of the water area to cover an unsampled water area with the attribute information, and obtaining the mean value of the single attribute information of the space interpolation in a grid cell, and grading the attribute, and rounding the attribute mean value of the grid cell hierarchically; performing dimensionless standardization treatment of 0-1 numerical values to the hierarchically rounded attribute information, and obtaining the evaluation coefficient of each attribute of the grid cell, summing the evaluation coefficients of all attributes of the grid cell to obtain a comprehensive evaluation value of the grid cell; classifying the comprehensive evaluation values of all grid cells by a natural breaking method of geographic information software and determining the recommended dredging area as the ecological dredging range with high comprehensive evaluation value.
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Description

technical field

[0001] The invention relates to water treatment and restoration technology, in particular to a method for determining the ecological dredging range of water body polluted sediment for the purpose of water quality improvement and ecological protection, which is applicable to inland surface polluted sediment of lakes, reservoirs and swamps. Background technique

[0002] Dredging is the construction operation that removes bottom sediment or sediment from a body of water. When used in lakes for the purpose of water conservancy, it is to remove the silt accumulated at the mouth of the river, the protrusion of the lake bottom and the shore of the lake, so that the water in and out of the lake is unobstructed, the storage capacity is enlarged, and the water storage capacity is increased; for the purpose of port governance When the time comes, dig deep at the place where the boat is moored on the lake bank or dig wide and deep on the lake route. In addition, there i...

Claims

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