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Test method for obtaining hydrogeological parameters

A test method, hydrogeological technology, applied in the test field of obtaining hydrogeological parameters, can solve the problem of low accuracy and achieve the effect of improving accuracy

Active Publication Date: 2021-07-09
核工业西南勘察设计研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned problems in the prior art, the present invention provides a test method for obtaining hydrogeological parameters, which solves the problem of low accuracy of methods for obtaining hydrogeological parameters in the prior art

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  • Test method for obtaining hydrogeological parameters

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Embodiment Construction

[0018] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0019] The test methods for obtaining hydrogeological parameters include:

[0020] S1, using ground penetrating radar to detect the area to be tested, calculate the relative permittivity of the medium through the wave velocity of the ground penetrating radar, and then calculate the volumetric water content and unsaturated zone porosity of the medium according to the different dielectric constants of different media.

[0021...

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Abstract

The invention provides a test method for acquiring hydrogeological parameters, which comprises the following steps of: detecting a to-be-detected area by using a ground penetrating radar to obtain the volume water content and the unsaturated zone porosity of the to-be-detected area; dividing the to-be-detected area into a plurality of sampling areas according to the volume moisture content, and sampling soil in each sampling area to obtain a columnar soil sample; placing the columnar soil sample in a test cylinder, and carrying out permeability tests under different water temperature conditions to obtain test permeability coefficients; and according to the porosity of the unsaturated zone, obtaining an estimated permeability coefficient through a Kozeny-Carman formula, if the ratio of the test permeability coefficient to the estimated permeability coefficient is 0.9-1.1, adopting the test permeability coefficient, and otherwise, abandoning the test permeability coefficient in the test. The problem that in the prior art, a method for obtaining hydrogeological parameters is low in accuracy is solved.

Description

technical field [0001] The invention relates to the technical field of engineering geological survey, in particular to a test method for obtaining hydrogeological parameters. Background technique [0002] In nature, the irregular change and movement of groundwater is called hydrogeology, and the hydrogeological conditions are relatively complicated. Many engineering projects have not studied the hydrogeological conditions of the area in depth during the survey process, and in the subsequent design stage Hydrogeological problems were ignored, resulting in a series of geotechnical engineering hazards caused by groundwater, which not only greatly damaged the reputation of the survey company, but also brought large economic losses to the society. Therefore, in the actual survey process, it is of great practical significance to strengthen the study of hydrogeological problems. [0003] In the prior art, test methods are usually used to obtain hydrogeological parameters to reflec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08G01N27/22G01N33/24
CPCG01N15/0826G01N15/0893G01N27/221G01N33/24G01N33/246
Inventor 董云于丰泽冯瑞王首智陶瑜黄方泉
Owner 核工业西南勘察设计研究院有限公司
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