Method for determining non-linear flow seepage failure hydrodynamic-slope value of disturbed belt

A non-linear flow, hydraulic gradient technique, applied in the direction of permeability/surface area analysis, measurement device, suspension and porous material analysis, etc.

Active Publication Date: 2019-04-26
HOHAI UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for determining the hydraulic gradient value of the non-linear flow seepage damage in the dislocation zone, so as to solve the problem of obtaining the hydraulic gradient value of the non-linear flow seepage damage in the dislocation zone through a simple and feasible test on the spot

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  • Method for determining non-linear flow seepage failure hydrodynamic-slope value of disturbed belt
  • Method for determining non-linear flow seepage failure hydrodynamic-slope value of disturbed belt
  • Method for determining non-linear flow seepage failure hydrodynamic-slope value of disturbed belt

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0024] The embodiment of the present invention provides a method for determining the hydraulic gradient value of non-linear flow seepage damage in the dislocation zone. The flow chart of the method for determining the hydraulic gradient value of non-linear flow seepage damage in the dislocation zone is as follows figure 1 As shown, the method includes the following steps:

[0025] Step 1: Create two boreholes perpendicular to the plane of the dislocation zone:

[0026] Step 11: Select the dislocation zone to be tested on site, grasp the occurrence of the dislocation zone through the dislocation zone outcrop or exploration data, estimate the buried depth of the dislocation zone at the test point...

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Abstract

The invention discloses a method for determining a non-linear flow seepage failure hydrodynamic-slope value of a disturbed belt. The method comprises the steps of two drill holes that expose a structural surface of the disturbed belt, obtaining the linear flow seepage parameters of the disturbed belt by carrying out a micro-water test in the two drill holes, calculating non-linear flow seepage parameters of the disturbed belt according to the pump-in test and the obtained linear flow seepage parameters of the disturbed belt and obtaining the non-linear flow seepage failure hydrodynamic-slope value of the disturbed belt according to the pressurizing time of a failure stage which seepage failure of the disturbed belt occurs and the linear flow seepage parameters and non-linear flow seepage parameters of the disturbed belt. The method for determining the non-linear flow seepage failure hydrodynamic-slope value of the disturbed belt is strict in theory and has the advantages that the testing process is simple and easy to operate, and the obtained parameters are complete and high in precision and the like.

Description

technical field [0001] The invention relates to a method for determining the hydraulic gradient value of non-linear flow seepage damage in a dislocation zone, and belongs to the technical fields of civil engineering, water conservancy and hydropower engineering. Background technique [0002] The dislocation zone mainly refers to the weak structural plane formed in the hard rock layer due to the tectonic movement in the geological history period. Dislocation zones can be divided into interlayer dislocation zones and intralayer dislocation zones, which are ubiquitous in nature and whose scale is far larger than the size of rock mass engineering structures, which has brought problems of seepage control and rock mass stability to many projects. and geological disasters. Among them, the basalts at the dam site of the Xiluodu Hydropower Project that has been built in the lower reaches of the Jinsha River and the Baihetan Hydropower Project that is under construction are widely de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24G01N15/08
CPCG01N15/0826G01N33/24
Inventor 周志芳郭巧娜庄超李鸣威王哲周子文
Owner HOHAI UNIV
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