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Scouring prevention experiment device and method for mine collapse column water inrush under confined water seepage function

A test device, collapse column technology, applied in measurement device, permeability/surface area analysis, suspension and porous material analysis, etc., can solve the problems of neglecting the erosion effect of water flow on rock formation, lack of authenticity, easy to wash out and so on

Active Publication Date: 2017-02-08
NORTH CHINA INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The simulation of pressurized water in the existing mine subsidence column water inrush test device is under undrained conditions, ignoring the erosion effect of water circulation on the rock formation, and the high-pressure water flow is easy to wash away the simulated rock formation, which lacks authenticity

Method used

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  • Scouring prevention experiment device and method for mine collapse column water inrush under confined water seepage function
  • Scouring prevention experiment device and method for mine collapse column water inrush under confined water seepage function

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0019] Specific implementation mode one: as Figure 1~Figure 2 As shown, this embodiment discloses a mine subsidence column water inrush anti-scouring test device under the action of pressurized water seepage, including a test bench 1, a flow stabilization device 2, a connecting pipe 3, a hose 4 and a pressure stabilization water pump 5, The test bench 1 includes an upper tank body 1-1 and a lower tank body 1-2, the bottom plate of the upper tank body 1-1 is placed at the notch of the lower tank body 1-2, and the front of the upper tank body 1-1 The facade is a transparent plate, and the bottom plate of the upper tank body 1-1 is provided with a through hole and several drain outlets 9-2, and one end of the connecting pipe 3 is fixedly connected with the through hole, and the lower tank A pressure stabilizing water pump 5 is placed inside the body 1-2, and the outlet end of the pressure stabilizing water pump 5 is fixedly communicated with the other end of the connecting pipe ...

specific Embodiment approach 2

[0020] Specific implementation mode two: as figure 1 As shown in the specific embodiment 1, a mine subsidence column water inrush anti-scouring test device under the action of pressurized water seepage described in the first embodiment, one end of the connecting pipe 3 is formed with an external thread, and the connecting pipe 2 2 The other end described in -5 is shaped on a matching internal thread, and the other end of the connecting pipe two 2-5 is threadedly connected with the connecting pipe one 3 one end.

[0021] The second connecting pipe 2-5 and the first connecting pipe 3 are detachably connected by threads, which is beneficial to the replacement of the flow stabilization device 2, different models can be selected according to the test requirements, and it is easy to clean.

specific Embodiment approach 3

[0022] Specific implementation mode three: as Figure 1~Figure 2 As shown in the specific embodiment 1 or 2, a mine subsidence column water inrush anti-scouring test device under the action of confined water seepage described in the specific embodiment 1 or 2, the column 2-1 is a plexiglass column.

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Abstract

The invention discloses a scouring prevention experiment device and method for mine collapse column water inrush under a confined water seepage function, and relates to a scouring prevention experiment device and method for the mine collapse column water inrush. An upper groove body bottom plate is arranged on a lower groove body notch; a first connection pipe is fixedly connected with a through hole of the upper groove body; a pressure stabilization water pump in the lower groove body is fixedly communicated with the first connection pipe through a hose; a column body is vertically arranged in the upper groove body and is provided with a plurality of water outlets; a sponge cover covers the outer side of the column body; the outer side of the sponge cover is tightly sheathed with at least one metal screen; the outer surface of the metal screen on the outermost side is tightly sheathed with a plurality of snap rings; the plurality of snap rings are detachably connected with the upper groove body; one end of a second connection pipe is fixedly arranged on the bottom of the column body; the other end of the second connection pipe is in detachable sealing communication with the first connection pipe. According to the scouring prevention experiment device and method, the seepage extension process of the collapse column under a confined water function can be more truly simulated, the geologic features of surrounding rock around the collapse column under the confined water seepage function can be assisted in researching, and the reasonable setting of a coal pillar is protected.

Description

technical field [0001] The invention relates to a test device and method for anti-scouring of column water inrush in mine subsidence, in particular to a test device and method for anti-scour of column water inrush in mine subsidence under the action of pressurized water seepage. Background technique [0002] In the process of mine production, the coal seam is seriously threatened by the collapse pillar. How to reasonably leave the collapse pillar to protect the coal pillar and prevent the collapse pillar from water inrush is an important problem to ensure the safe production of the working face. If the protective coal pillar is set too large, resources will be wasted, and if it is set too small, there will be safety hazards. Therefore, it is of great significance for mine production to study the water inrush mechanism of the collapsed pillar and determine the reasonable size of the coal pillar protected by the collapsed pillar. [0003] At present, the problem of collapsing...

Claims

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Application Information

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IPC IPC(8): G01N15/08
CPCG01N15/082
Inventor 李见波刘玉德王新梅
Owner NORTH CHINA INST OF SCI & TECH