Split type sand layer high pressure grouting simulation experiment device

Abstract

The invention belongs to the technical field of mining engineering and safety and particularly relates to a split type simulation experiment device for high-pressure grouting of a sand layer. According to the device, a testing device can be stripped off after a process of grouting into sand is finished and the state of slurry in the sand can be mastered directly; current high-pressure grouting action principles and effects on the sand layer in a stratum from the underground or the ground surface are tested and checked. According to the technical scheme provided by the invention, the split type simulation experiment device comprises a sand barrel and a water tank, wherein the sand barrel is divided into a left half barrel and a right half barrel; the left half barrel and the right half barrel are spliced together; a sealing gasket is arranged on the spliced part; slurry outlet holes are formed in the side walls of the left half barrel and the right half barrel; a water inlet is formed in the side wall of the upper end of the left half barrel and a grouting pipe is arranged between the left half barrel and the right half barrel; a grouting hole is formed in the peripheral wall of the grouting pipe; a pressurizing cover plate is arranged at the upper ends of the left half barrel and the right half barrel; the water inlet is connected with a water outlet in the water tank by a hose.

Description

1. Technical field: [0001] The invention belongs to the technical field of mining engineering and safety, and in particular relates to a split-type high-pressure grouting simulation experiment device for sand layers. 2. Background technology: [0002] In some coalfield areas, when the coal mining face passes through the water-rich area of ​​thin bedrock and thick loose layer, there is a threat of water inrush and sand intrusion. casualties and flooding accidents. Using high-pressure grouting in the water-rich sand layer in a certain range above the downhole to change the source conditions of water inrush and sand inrush to prevent water inrush and sand intrusion disasters, compared with the current commonly used methods of changing the working face development (room-pillar, Strip type, coal pillar type, etc.) and means of eliminating hydrodynamic conditions (pre-draining water, ground interception) have the characteristics of less restrictive conditions, low cost, fast spee...

AI Technical Summary

Problems solved by technology

[0004] High-pressure grouting can achieve the purpose of improving the characteristics of loose sand layers, but how the grout migrates in the sand layer and how to achieve the effect of preventing and controlling water inrush and sand inrush. At present, there is no intuitive and quantitative research result, and there is no search to similar tests and devices

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