Coal and rock mass deep hole subsection grouting reinforcement device and reinforcement method

Abstract

The invention discloses a coal and rock mass deep hole subsection grouting reinforcement device and a reinforcement method. The coal and rock mass deep hole subsection grouting reinforcement device comprise a grouting device and at least two groups of grouting pipeline assemblies, wherein the grouting device is provided with slurry outlets matched with the grouting pipe assemblies one by one, connected with the inlet ends of the grouting pipe assemblies and used for conveying different materials, the outlet end of each grouting pipe assembly is connected with a grouting head and can be detached from the grouting head by rotating on its axis. According to the coal and rock mass deep hole subsection grouting reinforcement device and the reinforcement method, the grouting pipeline assembliescan be separated from the grouting heads, so that grouting pipelines are convenient to disassemble, and the grouting heads are secondarily installed for the second time to realize grouting in the nextstage. The grouting range of the structure can be selected, the problems of small effective grouting range, serious slurry leakage phenomenon, complex grouting construction organization and the likeof an existing method for reinforcing a coal and rock mass through shallow hole grouting with high polymer reinforcing materials can be effectively solved, and meanwhile the problems of large diffusion radius fluctuation, difficulty in hole formation and difficulty in reusing drilling holes of deep hole grouting materials can be overcome.

Description

technical field [0001] The invention relates to the technical field of roadway support, in particular to a segmental grouting reinforcement device and a reinforcement method for coal and rock mass deep holes. Background technique [0002] In coal mining, mining will have a great impact on the coal rock mass around the coal seam, which makes the original coal rock mass and surrounding rock stress redistributed, and is always in the process of change. In recent years, the mining height of coal seams has been continuously increased, which will lead to a series of corresponding mine pressure phenomena in mining roadways and coal walls, such as increased roadway deformation, increased coal wall slabs, large roof sinking, and roof collapse. fall, etc., and seriously affect the safe recovery of mines. [0003] Practice has shown that in the face of complex and diverse geological conditions, it is difficult to ensure the stability of the surrounding rock simply by relying on the st...

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Problems solved by technology

[0005] In view of this, the present invention provides a deep-hole segmental grouting reinforcement device and a reinforcement method for coal and rock mass, which can effectively solve the problems of serious grout running and grout diffusion in existing polymer reinforcement materials for shallow-hole grouting reinforcement of coal and rock mass. Problems such as unevenness and few types of grouting materials

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