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Lisse phenomenon considered shallow groundwater level prediction method

A groundwater level and prediction method technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as affecting groundwater mining work and overestimating groundwater volume.

Inactive Publication Date: 2015-04-22
TIANJIN UNIV
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Problems solved by technology

Therefore, if the Lisse phenomenon cannot be accurately identified, the groundwater volume may be overestimated, thereby affecting the exploitation of groundwater.

Method used

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  • Lisse phenomenon considered shallow groundwater level prediction method
  • Lisse phenomenon considered shallow groundwater level prediction method
  • Lisse phenomenon considered shallow groundwater level prediction method

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Embodiment Construction

[0075] The present invention aims to establish a water-gas two-phase flow model of unsaturated soil based on the multiphase flow theory of porous media in unsaturated soil, and on the basis of considering the water phase and gas phase flow laws and their interactions at the same time, to simulate Analyze the fluctuation of groundwater level under rainfall conditions, considering the Lisse phenomenon.

[0076] The technical scheme adopted in the present invention is:

[0077] Step 1: Establish the water-air two-phase flow model of unsaturated soil, including the basic governing equations and constitutive relations, assuming that the system is always in a constant temperature state. details as follows:

[0078] The basic governing equations of the model are:

[0079] ∂ M κ ∂ t = - div F κ ...

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Abstract

The invention relates to the technical field of shallow groundwater level fluctuation prediction and aims at conducting simulation analysis on the Lisse phenomenon considered groundwater level fluctuation situation under the rainfall condition. Therefore, according to the adopted technical scheme, the Lisse phenomenon considered shallow groundwater level prediction method comprises the following steps of 1 establishing a water-air two-phase flow model of unsaturated soil, including basic control equation and constitutive relation, and supposing that a system is always in a constant-temperature state, 2 solving the model, 3 determining the boundary conditions of the model, and 4 utilizing the water-air two-phase flow model of the unsaturated soil and using the steady seepage situation as the initial condition of rainfall infiltration to conduct simulation analysis on the Lisse phenomenon considered groundwater level fluctuation situation under the rainfall condition. The Lisse phenomenon considered shallow groundwater level prediction method is mainly applied to the shallow groundwater level fluctuation prediction.

Description

technical field [0001] The invention relates to the technical field of predicting shallow groundwater level fluctuations; specifically, it relates to a shallow groundwater level forecasting method considering the Lisse phenomenon. technical background [0002] As an important part of water resources, groundwater has become one of the ideal water supply sources due to its good water quality, wide distribution and easy development. Therefore, it is becoming more and more important to use observation wells to monitor groundwater levels in real time. However, under rainfall conditions, the groundwater level changes greatly and rapidly, and the monitoring data of the observation wells may be biased. Therefore, using a mathematical model to simulate the groundwater level can reflect the fluctuation of the water level more precisely, and avoid unnecessary manpower and material resources. [0003] In the traditional sense, the groundwater table is consistent with the top of the sat...

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Application Information

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IPC IPC(8): G06F19/00
Inventor 孙冬梅臧永歌
Owner TIANJIN UNIV
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