Test system for simulating pore-fissure double-medium seepage hydraulic characteristics

A technology of porous medium and test system, which is applied in the field of test system for simulating the seepage hydraulic properties of pore-fracture dual medium

Inactive Publication Date: 2013-01-23
HOHAI UNIV
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  • Summary
  • Abstract
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Problems solved by technology

[0003] Aiming at the defects of the existing fracture seepage test system, the present invention develops and manufactures a double-medium seepage hydraulic characteristic test s

Method used

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  • Test system for simulating pore-fissure double-medium seepage hydraulic characteristics
  • Test system for simulating pore-fissure double-medium seepage hydraulic characteristics
  • Test system for simulating pore-fissure double-medium seepage hydraulic characteristics

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing, the present invention is described in detail:

[0034] 1) Production of medium test module: such as figure 1 As shown, the medium test module is directly poured on the test bench 16. Before pouring, a layer of 3 cm thick plain concrete mixed with silicone waterproofing agent is filled at the bottom of the bamboo plywood mold to simulate the impermeable bottom boundary of the porous medium. When pouring porous concrete, the stainless steel pressure measuring tube 10 is pre-embedded to measure the water pressure. The cracked medium is made of smooth plexiglass plate side walls 13 and porous concrete. The size of the side wall 13 of the plexiglass plate is length×width×height=1700mm×300mm×500mm. There is a base 14 with a width of 50 mm at the bottom of the side wall 13 of the plexiglass plate, and a slide groove 15 is arranged on the base 14 to facilitate the adjustment of the width of the crack. The side wall 13 of the...

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Abstract

The invention discloses a test method for simulating pore-fissure double-medium seepage hydraulic characteristics. The test method comprises a medium experiment module, a water circulation control module and a data acquisition module, wherein the medium experiment module comprises a box body and a pore medium which is arranged in the middle of the box body; an interval-adjustable fissure medium is formed between the pore medium and the inner wall of the box body; two ends of the pore medium in the box body are provided with a pore medium water inlet tank and a pore medium water outlet tank respectively; two ends of the fissure medium in the box body are provided with a fissure medium water inlet tank and a fissure medium water outlet tank respectively; the water circulation control module comprises a water supply system and a water return system; and the data acquisition module comprises a temperature sensor, a flow meter and a pressure sensor. By the experiment system, the defects that in the conventional fissure seepage test system, the permeability of the pore medium is ignored, double-medium water exchange information can not be obtained, and the like are overcome, and the test system is better matched with the practical situation.

Description

technical field [0001] The invention particularly relates to a test system for simulating the seepage hydraulic characteristics of a pore-crack dual medium. Background technique [0002] In actual engineering, especially in the karst landform areas of Southwest my country, there are generally cases where the rock mass with cracks has a large permeability coefficient and cannot be simply treated as impermeable. Due to the limitations of model materials, fabrication methods, and measurement techniques, previous experimental studies could only be conducted independently on fractured media. The common defect of these test systems is that the fracture surface is treated as an impermeable surface, the porous medium forming the fracture is not reasonably simulated, and the water exchange between the porous medium and the fractured medium is ignored. Therefore, only the fractured rock mass with poor matrix permeability can be simulated, but the fractured rock mass with good matrix ...

Claims

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Application Information

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IPC IPC(8): G01N33/24
Inventor 李琛亮沈振中赵坚徐力群郭玉嵘杨旭东
Owner HOHAI UNIV
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