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Underground water connectivity detection method for obtaining underlying surface conditions of distributed hydrological model

A distributed hydrology and detection method technology, which is applied in the fields of nuclear radiation exploration, geophysical measurement, electrical/magnetic exploration, etc., can solve the problem of inability to monitor the water level changes of multiple wells at the same time, large randomness, and harmful tracer environment. And other issues

Inactive Publication Date: 2011-10-12
HOHAI UNIV
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Problems solved by technology

How to determine the confluence path has always been a very difficult problem
[0003] The basis for determining the confluence path is firstly to detect the connectivity of groundwater. The existing connectivity detection method is to simply drill holes to pump water and analyze the water level changes in the surrounding observation wells. However, this method is relatively random, and due to the number of observers Due to limitations, it is impossible to monitor the water level changes in multiple wells at the same time, and of course the direction of groundwater movement cannot be monitored at the same time
Some other methods use tracer methods to monitor the direction of water movement, many of which are harmful to the environment

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  • Underground water connectivity detection method for obtaining underlying surface conditions of distributed hydrological model
  • Underground water connectivity detection method for obtaining underlying surface conditions of distributed hydrological model
  • Underground water connectivity detection method for obtaining underlying surface conditions of distributed hydrological model

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Embodiment Construction

[0028] The invention obtains the groundwater connectivity detection method for the underlying surface conditions of the distributed hydrological model.

[0029] Specifically, the method of the present invention includes the following steps:

[0030] (1) such as figure 1 As shown in the target watershed, an automatic water level tracker 1 is installed on all wells, and the wells a-1, a-2, a-3, a-4, a-5, a-6 are numbered sequentially.

[0031] (2) Pumping starts from well a-1. At this time, a-1 is called a pumping well, and the other wells are observation wells. When pumping water, the automatic water level monitor 1 transmits the water level of each well to the central control computer 2;

[0032] (3) The water level of pumping well a-1 was maintained at a position lower than the original water level by 0.5 m for 3 hours, resulting in an obvious drop funnel;

[0033] (4) Use the improved conductivity single hole dilution method to obtain the flow direction of the observation well;

[0034...

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Abstract

The invention relates to an underground water connectivity detection method for obtaining the underlying surface conditions of a distributed hydrological model, which belongs to the field of hydrogeology and particularly relates to a detection method for providing the underlying surface conditions for the distributed hydrological model. The method provided by the invention comprises the followingsteps: selecting a target river basin; carrying out the alternate water pumping measurement on the wells in the target river basin; monitoring the water-level variation of each well in real time by utilizing an automatic water-level tracker; and obtaining the flow direction of each well by utilizing an improved electric conductivity single-hole dilution method. In the method provided by the invention, the water-level variation course of each observation well in the water pumping course is obtained in real time by utilizing the automatic water-level tracker; the electric conductivity single-hole dilution method is improved; the flow direction of each observation well is obtained when the water pumping is carried out; and the judgment for the connectivity of underground water is simple, rapid and accurate.

Description

Technical field [0001] The invention provides a groundwater connectivity detection method for acquiring underlying surface conditions of a distributed hydrological model, which belongs to the field of hydrogeology, and particularly relates to a method for detecting underlying surface conditions provided by a distributed hydrological model. Background technique [0002] Distributed hydrological models mostly use the surface morphology of the watershed as the basis of the model structure, while there is less research on karst watersheds with more complex underlying surface conditions such as geology and landforms. The proportion of underground runoff in karst drainage basins is relatively large, and the hydrological processes in the epikarst zone play a role in the surface and ground hydrodynamic processes. Therefore, the simulation of the ground hydrodynamic process and its relationship with surface water flow and water conversion in shallow karst zones are karst areas. The key to...

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Application Information

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IPC IPC(8): G01V9/00G01C3/00G01P13/00G01V15/00
Inventor 石朋侯爱冰张志才杨宇瞿思敏陈喜
Owner HOHAI UNIV
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