Subsided column visualized seepage test device

Abstract

The invention discloses a subsided column visualized seepage test device, which comprises a funnel-shaped base lapped on a bracket. The funnel opening is connected with a water outlet pipe; a container with a filter screen is arranged below the water outlet pipe; the container is placed on an electronic balance; the base is internally provided with a bottom seepage plate; the upper part of the base is provided with a lower steel cylinder with a sealing groove reserved; a visualized cylinder is embedded inside the lower steel cylinder, and the upper part is sleeved with an upper steel cylinderwith a sealing groove reserved; the upper steel cylinder is internally provided with a top seepage plate; an axial pressure loading system is arranged above the top seepage plate; the visualized cylinder is also connected with a water pressure loading system through a water inlet pipe; a water pressure collecting system and a flow collecting system constitute a test system; the water pressure collecting system is composed of a pressure gauge and a data collector connected with the pressure gauge; and the flow collecting system comprises the electronic balance and a computer terminal connectedwith the electronic balance. The device of the invention realizes visualization of the whole process of the seepage test of the subsided column, and quantifies the evolution law of the seepage, so that the research on the subsided column is more precise.

Description

technical field [0001] The invention belongs to the research on seepage characteristics of water disaster prevention and control of a collapsed column, and in particular relates to a visual seepage test device for a collapsed column. Background technique [0002] As a special geological structure in North my country, the subsidence column is mostly developed in the Ordovician limestone, and it is easy to become a vertical water-conducting channel, forming a hydraulic connection between the coal seam floor and the Ordovician ash water, and causing large-scale water inrush accidents. Water has the characteristics of hysteresis and suddenness, and it is one of the most serious types of water disasters that cause casualties and economic losses, and it is difficult to predict and prevent. [0003] At present, the simulation and evaluation of the formation of the collapsed column and the degree of damage are mainly carried out by the seepage method of the transient method and the s...

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Problems solved by technology

[0002] As a special geological structure in North my country, the subsidence column is mostly developed in the Ordovician limestone, and it is easy to become a vertical water-conducting channel, forming a hydraulic connection between the coal seam floor and the Ordovician ash water, and causing large-scale water inrush accidents. Water has the characteristics of hysteresis and suddenness, and it is one of the most serious types of water disasters that cause casualties and economic losses. It is difficult to predict and prevent

[0003] At present, the simulation and evaluation of the formation of the collapsed column and the degree of damage are mainly carried out by the seepage method of the transient method and the steady state method. The transient method is mostly used in experiments where it is difficult to collect fluid flow (or the outflow and evaporation are close to the same order of magnitude) For testing, the steady-state method is generally used for test tests that can collect fluid flow. In the actual evaluation process, the steady-state method is mostly used, but the common steady-state method evaluation devices do not use visualization solutions, and the seepage flow cannot be intuitively felt during the test process. The path and particle migration and loss rules, and the test operation is not easy to control

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