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Testing device and method of hydrogeological parameter determining of obliquely-filled cracks

A hydrogeological and parametric testing technique used in surveying, earthmoving, wellbore/well components, etc.

Active Publication Date: 2017-06-20
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no mature method to accurately determine the hydrogeological parameters of inclined filling fractures

Method used

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  • Testing device and method of hydrogeological parameter determining of obliquely-filled cracks
  • Testing device and method of hydrogeological parameter determining of obliquely-filled cracks
  • Testing device and method of hydrogeological parameter determining of obliquely-filled cracks

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Embodiment 2

[0087] It is basically the same as Example 1, except that the length of the concentric double-layer capsule is 800mm, the outer diameter is 127mm, and the inner diameter is 89mm; the diameter of the multi-functional probe is 68mm.

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Abstract

The invention discloses a testing device and method of hydrogeological parameter determining of obliquely-filled cracks. The testing device comprises an oscillation test parameter testing system main machine, an air pressure type oscillation test water head stimulating unit well head sealing cavity, a casing pipe, a communication electric cable, a multi-functional probe, a sealing cavity pressure releasing valve, a sealing cavity barometer, a sealing cavity air inlet valve, a sealing cavity air inlet pipe, an air pressure plugging system, a punched hole and a chock plug; according to the testing method, one single target crack is isolated through an air pressure plug, and the target cracks are subjected to an air pressure type oscillation test; and a standard curve is drawn through a derived obliquely-filled crack oscillation test module, the target crack transmissibility coefficient and the water storage coefficient of the target cracks are calculated through the curve fitting method, and the influence of the border distance of a radial constant head on the precision of parameter calculating is evaluated.

Description

technical field [0001] The invention relates to a test device and a test method for determining hydrogeological parameters of obliquely filled fissures. Background technique [0002] The fractures in the rock mass have high heterogeneity and anisotropy. Conventional hydrogeological tests can only obtain the average hydrogeological parameters of the rock mass, which cannot meet the requirements of theoretical research and engineering application accuracy. In the field of determining the hydrogeological parameters of rock and soil by means of oscillation tests, previous studies treated inclined filling fractures as equivalent to horizontal fractures, and proposed a theoretical model and application method for determining the hydrogeological parameters of inclined fractures through oscillation tests is a hot topic in this research field. difficulty. At present, there is no mature method to accurately determine the hydrogeological parameters of obliquely filled fractures. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00E21B47/00E21B47/10E21B33/126
CPCE21B33/126E21B47/00E21B47/10E21B49/00
Inventor 戴云峰周志芳赵燕容
Owner HOHAI UNIV
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