Device for testing performance of grouting and water plugging material for mine and application method of device

Abstract

The invention discloses a device for testing performance of a grouting and water plugging material for a mine and an application method of the device. The device comprises a plain jolter, a testing barrel, grouting pumps, a water pump and a pressurization system, the testing barrel is fixedly mounted on the plain jolter, a fixed porous plate is mounted at the bottom in the testing barrel, a movable porous plate is mounted at the top in the testing barrel, the area between the fixed porous plate and the movable porous plate forms a material filling area, the movable porous plate is connected with the pressurization system, multiple grouting pipes and multiple pressure testing pipes are mounted on and communicated with the material filling area from top to bottom, each grouting pipe is connected with the corresponding grouting pump, a water pressure meter is mounted on each pressure testing pipe, the water pump is communicated with the bottom of the testing barrel through a water injection pipe, a water outlet pipe is mounted at the top of the testing barrel, and the grouting pipes, the pressure testing pipes, the water injection pipe and the water outlet pipe are each provided with a valve. The device can simulate the water inrush conditions under different permeability conditions, true water plugging performance of the water plugging material is obtained, and furthermore, reliable reference is provided for a coal mine site to select water plugging materials and construction conditions.

Description

technical field [0001] The invention relates to the technology in the field of performance testing of mine water shutoff materials, in particular to a mine grouting water shutoff material performance test device and a use method thereof. Background technique [0002] Mine water damage is one of the main hidden dangers that threaten the safety of coal mine production, and it is also an important factor that restricts production activities and sustainable development in many mining areas. At present, with the increase of mining depth, the amount of water gushing out of mines continues to increase, and the discontinuous surfaces such as joints and fissures in the broken rock formations are just water-conducting channels, resulting in a large amount of water gushing in the coal rock body, which poses a serious threat to the safety of coal mines . [0003] Grouting water blocking is one of the effective measures to prevent and control mine water damage and ensure safe mining. A...

AI Technical Summary

Problems solved by technology

These methods are simple and easy to implement, but the test results of these methods cannot fully reflect the actual effect of field application, but can only reflect the performance of the material itself, and cannot specifically reflect the actual water shutoff effect of the water shutoff material

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