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Water circulating sand tank test device for confined water seepage model

A test device, pressurized water technology, applied in the direction of measuring device, permeability/surface area analysis, suspension and porous material analysis, etc., can solve the problems that the research needs to be further strengthened, and achieve simple structure, strong operability, and structure Easy to adjust the effect

Pending Publication Date: 2017-10-24
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In deep foundation pit engineering and deep mineral mining engineering, it is necessary to deeply understand the seepage process of confined aquifers, but the current research on the seepage of confined water needs to be further strengthened

Method used

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  • Water circulating sand tank test device for confined water seepage model
  • Water circulating sand tank test device for confined water seepage model
  • Water circulating sand tank test device for confined water seepage model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Example 1 Test of stable seepage characteristics of confined water

[0062] figure 1 It is a front view of the overall structure of the experimental device of the present invention. The water circulation sand tank test device for the confined water seepage model of the present invention can simulate the stable seepage process of the confined water. The principle of the stable seepage test is: first lay the test sand in the sand tank, then cover the top cover plate 14, and seal it with waterproof glue. Turn on the water pump 7, open the valves 5 and 6, the water flow is pumped out from the water tank 8, and enters the infiltration tank 15 through the inflow port 4. When the water level rises to the height of the overflow port 1, the water level does not rise any more, and the constant water head is maintained in the infiltration tank condition. The water in the seepage tank 15 enters the sand tank 17 through the seepage barrier 2 and the anti-seepage screen 3, and then...

Embodiment 2

[0068] Example 2 Test of Unsteady Seepage Characteristics of Confined Water

[0069] The water circulation sand tank test device used in the pressurized water seepage model of the invention can simulate the unsteady seepage process of the pressurized water.

[0070] The principle of the unsteady seepage test is: first lay test sand in the sand tank, and bury the pore water pressure sensor, then cover the top cover plate 14, and seal it with waterproof glue. Referring to the steady seepage test procedure, first make the device in a steady seepage state. Then water pump 7 and valve 6 are closed simultaneously, and water flows into sand tank 17 through infiltration dividing plate 2 and anti-seepage screen 3, and then flows into the seepage tank 16 through anti-seepage curtain 13 and seepage dividing plate 12. During the period, the water level in the seepage tank 15 gradually decreases, and the water level in the seepage tank 16 remains constant. The water pressure changes at v...

Embodiment 3

[0078] Example 3 Pumping test of complete well in confined water layer

[0079] see Figure 4, the water circulation sand tank test device used in the confined water seepage model of the present invention can simulate the complete well pumping test of the confined water layer. Its principle is: first lay test sand in sand tank, cover top cover plate 14 then, and seal with waterproof glue. Turn on the water pump 7, open the valves 5 and 6, the water flow is pumped out from the water tank 8, and enters the infiltration tank 15 through the inflow port 4. When the water level rises to the height of the overflow port 1, the water level does not rise any more, and the constant water head is maintained in the infiltration tank condition. The water in the seepage tank 15 enters the sand tank 17 through the seepage barrier 2 and the anti-seepage screen 3, and then flows into the seepage tank 16 through the seepage barrier 13 and the seepage barrier 12. Close the valve 9, so that the...

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Abstract

The invention provides a water circulating sand tank test device for a confined water seepage model, wherein an infiltration water channel is connected with a sand tank through a connector; an infiltration partition plate is inserted and fixed into a groove in the connector; the surface of the infiltration partition plate is coated with a first anti-seepage curtain; a seepage water channel is connected with the sand tank through the connector; a seepage partition plate is inserted into the groove in the connector; the surface of the seepage partition plate is coated with a second anti-seepage curtain; the upper part of the sand tank is covered with a top cover plate through waterproof glue; two ends of the sand tank are connected with the infiltration partition plate and the seepage partition plate through the waterproof glue; a plurality of piezometer tubes are arranged on the side wall of the sand tank; and a support structure is arranged on the lower surface of the whole structure. The water circulating sand tank test device has the beneficial effects of being simple in structure and high in operability, is capable of simulating stable and unstable seepage processes of confined water and pumping seepage processes of a complete well and an incomplete well of the confined water and plays an important role in research of seepage characteristic in the confined water and seepage stability analysis, and a good experiment device scheme is provided for experiment research of more problems in related professional fields.

Description

technical field [0001] The invention relates to the fields of rock and soil engineering, hydrogeological engineering and water conservancy engineering experimental devices, in particular to a water circulation sand tank test device for a pressurized water seepage model. Background technique [0002] Seepage is the flow of water in the voids of rock and soil. The theory of seepage has been widely used in many fields such as water conservancy, civil engineering, water supply and drainage, environmental protection, geology, petroleum, and chemical industry. Sand tank model test is a basic method to study seepage process. Although there are many achievements in the existing seepage research, most of them focus on the seepage research of the submerged layer. The sand tank simulation of seepage in the aquifer can be used to study engineering problems such as earth dam seepage and well seepage under stable and unsteady conditions. As a storage form of groundwater, confined water ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/0826Y02A20/00
Inventor 白玉川黄哲徐海珏
Owner TIANJIN UNIV
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