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Evaluating method for special vulnerability of local ground water based on measured osmotic coefficients of homogeneous water-bearing stratum

A technology of permeability coefficient and evaluation method, which is applied in the field of environmental science, environmental risk, and hydraulic engineering, and can solve problems such as complex devices, cumbersome calculations, and high equipment costs

Inactive Publication Date: 2013-01-30
CHANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are also some disclosed patents for groundwater permeability coefficient measuring devices or methods, but the devices are relatively complicated, the calculation is cumbersome, and the equipment cost is high. For example, the application number is 201110202597.4 for a device for measuring the in-situ permeability coefficient of soil layers, and the application number is 201010018237.4- A Method for Measuring the Vertical Saturation Permeability Coefficient of Soil

Method used

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  • Evaluating method for special vulnerability of local ground water based on measured osmotic coefficients of homogeneous water-bearing stratum
  • Evaluating method for special vulnerability of local ground water based on measured osmotic coefficients of homogeneous water-bearing stratum
  • Evaluating method for special vulnerability of local ground water based on measured osmotic coefficients of homogeneous water-bearing stratum

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Embodiment Construction

[0062] The specific implementation method of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0063] Example: Risk assessment of groundwater pollution in a city in southern Jiangsu

[0064] 1. Overview of the study area

[0065] A city is a flat and wide alluvial lake plain. The thickness of the Quaternary loose sediments is relatively large (generally above 150m), mainly in fluvial facies with coarse-grained sediments, and the sediment grains range from fine to coarse from top to bottom. The water-bearing sand layer is extremely developed, and the groundwater resources are extremely rich. The lithology of the aquifer is mainly composed of upper Pleistocene alluvial and alluvial lacustrine gray-gray yellow silt, fine sand and silt. The lithology of the northern riverside belt is mostly silt-fine sand and medium-fine sand, and the thickness of the sand layer is relatively large, generally between 15 a...

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Abstract

The invention relates to an evaluating method for the special vulnerability of the local ground water built by combining the local pollutants, which represents the special vulnerability of the local ground water based on a GIS (Geographic Information System) platform. The evaluating method comprises the following three steps of: (1) selecting the main factors for influencing the specificity of the local ground water based on a DRASTIC (Index=DrDw+RrRw+ArAw+SrSw+TrTw+IrIw+CrCw) evaluating method, building an indicator system of the special vulnerability of the local ground water and evaluating the special vulnerability of the local ground water caused by provincial characteristic pollutants through a fuzzy mathematic method; (2) constructing an actual measurement device for the osmotic coefficients of the local ground water, and actually measuring the osmotic coefficients of the local ground water; and (3) repeatedly calculating the special vulnerability of the local ground water based on the GIS technology, and visually representing the special vulnerability of the local ground water.

Description

technical field [0001] The invention belongs to the field of environmental science and environmental risk, in particular to the field of water conservancy engineering and visualization technology, and a method for comprehensively evaluating the special vulnerability of regional groundwater. Background technique [0002] Groundwater is an important part of the water cycle, an important water source for urban water supply in my country, and one of the important drinking water sources. With the increasing development of groundwater resources, its pollution is becoming more and more serious. Such as pollution by agricultural non-point sources and urban rainwater runoff; direct discharge pollution of sewage and solid waste generated by urbanization and industrialization; pollution from mining and waste gas pits; salt water intrusion caused by excessive exploitation of groundwater and pollution of natural harmful substances Dissolution leads to deterioration of groundwater qualit...

Claims

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Application Information

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IPC IPC(8): G01N33/18
Inventor 杨彦李定龙王宗庆
Owner CHANGZHOU UNIV
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