Single fracture unsaturated seepage test system

A test system, single-fracture technology, applied in the field of fracture unsaturated seepage characteristics testing

Active Publication Date: 2013-06-12
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims at the non-steady process of water flow in horizontal dry cracks where the existing single-crack seepage test cannot accurately and truly reflect the changing water head, crack...

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Embodiment Construction

[0044] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0045] Such as figure 1 and figure 2 As shown, the single-crack unsaturated seepage test system includes: a constant head water supply system 11, two stone strips 12, two gaskets 19, a bracket 13 and a data acquisition system, wherein,

[0046] The constant head water supply system 11 is used to provide experimental water, and the water is transported to the stone crevices between the two stones through the guide pipe 14 . The constant head water supply system 11 includes a water tank, the water tank is provided with a water inlet and a water outlet, and the water is slowly fed to supplement the experimental water, and the water outlet maintains a constant pressure through th...

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Abstract

The invention discloses a single fracture unsaturated seepage test system which comprises a constant head water supplying system, two blocks of strip-shaped stone, two gaskets, a support and a data acquisition system, wherein the constant head water supplying system is used for providing water for experiment and ensuring constant pressure in a water inlet, the two blocks of strip-shaped stone are stacked together, grains of sand are evenly adhered on two opposite surfaces, the gaskets are in a long and thin shape and placed at two sides of a long side between the two blocks of strip-shaped stone, the support is used for fixing the strip-shaped stone, the data acquisition system comprises a current location detection circuit and an industrial personal computer in connection, the current location detection circuit is provided with a plurality of monitoring points in stone cracks, times of current flowing to each monitoring point are monitored by the industrial personal computer, and monitoring of current location in the stone cracks is achieved. The single fracture unsaturated seepage test system has the advantages of changing the height of water head, the thickness of the stone cracks, the roughness of the surfaces of the stone cracks of the constant head water supplying system, monitoring and recording the times of the current flowing to some locations, and achieving a fluid flowing law experimental research in the unsteady process of the current in the horizontal dry cracks from nonexistence to pass into existence.

Description

technical field [0001] The invention relates to the technical field of fracture unsaturated seepage characteristics testing, in particular to a single-fracture unsaturated seepage test system. Background technique [0002] In the seepage analysis of fractured rock mass, in order to better describe the heterogeneity and anisotropy of fractured rock mass, the discrete fracture network model is usually used as the mathematical model. That is to say, the rock block itself is impermeable, and the entire groundwater movement is carried out through a large-scale fracture network. [0003] The traditional discrete fracture network model assumes that the cubic law is applicable to single-fracture seepage, and through experiments and numerical simulation studies, it is proved that this assumption is reasonable under the following conditions: (i) the water flow in the fracture is a constant flow; (ii) the upper and lower walls are basically parallel , impermeable, small roughness, and...

Claims

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Application Information

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IPC IPC(8): G01N33/24
Inventor 赵颖李世海刘晓宇魏作安许利凯孟达范永波吕祥锋
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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