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Rock hydraulic parameter fine testing device and testing method

A technology for hydraulic parameters and testing devices, which can be used in measurement devices, water resource evaluation, suspension and porous material analysis, etc., and can solve problems such as large electrode distance and large electrodes.

Pending Publication Date: 2022-07-08
GUIZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional high-density electrical instruments have large electrodes and large electrode distances, making it difficult to finely characterize the change in formation resistivity; the pressure water test can realize the pressure of water into the cracks and change the formation resistivity, which can provide a response for the fine high-density instrument Data, providing data for visualization of seepage process in fractures

Method used

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  • Rock hydraulic parameter fine testing device and testing method
  • Rock hydraulic parameter fine testing device and testing method

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Experimental program
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Embodiment 1

[0032] see figure 1 , a fine testing device for hydraulic parameters of rock mass, including a double plug plugging module 5, the double plug plugging module 5 is arranged in a borehole of the rock mass to be tested, the borehole diameter is 50cm-90cm, and the depth is greater than or equal to 2m , the double-plug plugging module 5 is connected with a plug-pressing device 11 through a wire 13; the top of the double-plug plugging module 5 is provided with a pressure water device interface 6, and the pressure water device interface 6 is connected with a water injection module; It includes a high-density electrical method data collector 2, and the high-density electrical method data collector 2 is connected with a high-density electrical method data processor 1 through wires; and also includes a plurality of high-density electrical method electrodes 3.

[0033] see figure 2 , the double-plug blocking module 5 includes an upper plug 51 and a lower plug 52, and the upper plug 51 ...

Embodiment 2

[0051] In this embodiment, if the field hydraulic parameter test is carried out in a water-filled and saturated borehole, each step is the same as that in Embodiment 1.

[0052] It is only necessary to configure a saturated NaCl solution in the sump 10, so that the injected high-conductivity NaCl solution and the low-resistivity water in the original rock form an electrical difference, so that the injected NaCl solution can change the formation resistivity, and can be tested in the high-density electrical method. The results show a clear response to determine the hydraulic parameters of the structural surface of the rock mass and the hydraulic parameters of the rock mass.

[0053] As a preferred solution, the test method can replace the high-density electrical method with a high-frequency ground penetrating radar 4 greater than (900MHz), and the test steps are the same.

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Abstract

The invention relates to the technical field of geology in-situ testing of hydrogeology engineering, in particular to a rock hydraulic parameter fine testing device and method.The rock hydraulic parameter fine testing device comprises a double-plug plugging module, the double-plug plugging module is arranged in a drill hole of a rock to be tested, and the double-plug plugging module is connected with a plug pressurizing device through a wire; the top of the double-plug plugging module is provided with a water pressing device connecting port, and the water pressing device connecting port is connected with a water injection module. The system further comprises a high-density electrical method data collector, and the high-density electrical method data collector is connected with a high-density electrical method data processor through a wire. The device further comprises a plurality of high-density electrical method instrument electrodes. The method disclosed by the invention provides a method for finely depicting the rock mass and rock mass structural surface permeability and spatial distribution parameters, and is of great significance to geotechnical engineering seepage research and related engineering design.

Description

technical field [0001] The invention relates to the technical field of in-situ testing of hydrogeological engineering geology, in particular to a device and a testing method for fine testing of hydraulic parameters of rock mass. Background technique [0002] The hydraulic parameters of rock mass and its internal structure surface are the key parameters in the design and construction of mining, water conservancy and hydropower projects, the basis for the calculation of rock mass seepage, and the important parameters related to the long-term safety of the project. The traditional method mainly obtains the rock mass structure surface geometry and rock mass hydraulic parameters through outcrop structure surface measurement, water pumping test, etc., but cannot obtain the crack space distribution characteristics and the structure surface hydraulic parameters. A method for hydraulic parameters of rock mass structure plane and rock mass fissure combined with fine geophysical prospe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08G01N27/04
CPCG01N15/0826G01N27/041Y02A90/30
Inventor 陈世万吴佼基王贵宾吴攀左双英
Owner GUIZHOU UNIV