Grouting method and device for adjacent gate roads in internal staggered type dislocation coal mining method

A staggered position and internal staggered technology, applied in the field of coal mining, to achieve the effect of significant grouting effect, significant economic benefits, and small space

Active Publication Date: 2021-07-13
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention is mainly used to solve the stability problem of coal body reinforcement effect between adjacent slots in the internal stagger type staggered coal mining method, and the grouting pipe used is a hollow anchor rod

Method used

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  • Grouting method and device for adjacent gate roads in internal staggered type dislocation coal mining method
  • Grouting method and device for adjacent gate roads in internal staggered type dislocation coal mining method
  • Grouting method and device for adjacent gate roads in internal staggered type dislocation coal mining method

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Embodiment Construction

[0027] The present invention is further illustrated by the following examples, but not limited to the following examples.

[0028] Such as Figure 1~6 As shown, the present invention provides a grouting device for adjacent slots in the internal staggered staggered coal mining method, including: grouting pipes, drilling rigs, drilling tools, grouting pumps, mixers, grouting pipelines, stop Slurry plugs and mixers; drilling rigs and drilling tools are hole-forming equipment, while grouting pumps, mixers and other equipment and appliances are used to prepare and transport slurry; mixers are used to prepare slurry, and grouting pipelines are used to transport slurry. The grouting pump is used to provide the pressure required for grout transportation, so that the grout can reach the grouting place through the grouting pipeline. After the anchor is placed in the borehole, it is connected to the end of the anchor through the grouting pipeline. The grouting pump provides The pressure...

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Abstract

The invention discloses a grouting method and device for adjacent gate roads in an internal staggered type dislocation coal mining method. In the internal staggered type dislocation coal mining method, a stope coal seam is a thick coal seam, an air return gate road of a stope face and an air inlet gate road of a driving face are not on the same level, the air return gate road of the stope face is arranged along a coal seam roof, the air inlet gate road of the driving face is arranged along a coal seam floor, and a height difference exists between the air return gate road of the stope face and the air inlet gate road of the driving face in the vertical direction; in the construction process, driving of the air inlet gate road of the driving face lags behind the air return gate road of the stope face by 180-200 m, that is, after the air return gate road of the stope face is stable, an air inlet gate road of a next working face is driven; and while a roadway is driven, the roadway needs to be punched and grouted, and grouting holes are arranged in a single row. According to the invention, multi-angle and all-directional grouting in the coal seam can be realized under a well, so that the grouting effect in the coal seam is more obvious; and under the condition that anchor rods are not additionally used, the reinforcing effect of the coal seam around the roadway is firmer.

Description

technical field [0001] The present invention relates to a grouting method and device for adjacent slots in the internal staggered staggered coal mining method, in particular to a method and device for stabilizing the roadway through grouting of compound grouting pipes and special arrangement of bolts , belongs to the field of coal mining technology. Background technique [0002] In the internal staggered staggered seam mining method, there is a grouting staggered area between the return air trough of the mining face and the air intake trough of the excavation face. The angle of grout hole, bolt support and the choice of grouting pipe all have a great influence on the support effect. [0003] In the traditional grouting process, the selected grouting pipe is a three-hole grouting pipe, and the interval between the grouting holes on this grouting pipe is 120°, which can ensure that the grouting pressure is large enough, and the grout can reach the coal seam along the coal sea...

Claims

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Application Information

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IPC IPC(8): E21D11/10E21D20/02E21C41/18
CPCE21D11/10E21D20/02E21D20/028E21C41/18
Inventor 冯国瑞樊一江王朋飞郝晨良文晓泽郭军白锦文戚庭野刘佳男朱林俊吴昌泉
Owner TAIYUAN UNIV OF TECH
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