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Surrounding rock crushed zone hollow grouting anchor rope hole sealing device and hole sealing method thereof

A technology of grouting anchor cable and hole sealing device, which is applied in the direction of earthwork drilling, bolt installation, mining equipment, etc. It can solve the problems of affecting the effect of high-pressure uniform grouting, the leakage of grout plug and the pressure relief, so as to ensure the high pressure Grouting effect, compact structure, remarkable effect

Inactive Publication Date: 2019-10-25
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the surrounding rock is relatively broken, a bell mouth will be formed at the orifice, and the grout stopper will easily cause liquid leakage and pressure relief, which will directly affect the high-pressure uniform grouting effect

Method used

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  • Surrounding rock crushed zone hollow grouting anchor rope hole sealing device and hole sealing method thereof
  • Surrounding rock crushed zone hollow grouting anchor rope hole sealing device and hole sealing method thereof
  • Surrounding rock crushed zone hollow grouting anchor rope hole sealing device and hole sealing method thereof

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Embodiment Construction

[0028] Such as Figures 1 to 4 As shown, a hollow grouting anchor cable sealing device in the broken zone of surrounding rock, the outer part of the grouting anchor cable is a twisted steel strand, and the inner part is a grouting pipe 7, and the middle and rear part of the grouting pipe 7 has a grouting Port 1, the other end of the grouting anchor cable (the outer end of the hole) is sequentially inserted into an external grout stopper 11 (which is in the shape of a truncated cone) and a tray 8, and is fastened with the anchor cable anchor 10, and the plug 9 is used for Plug the grouting pipe 7. During use, before the external grouting plug 11 is installed, smear on the outer peripheral side of the external grouting plug 11 (here used to fill the gap between the outer peripheral side of the external grouting plug 11 and the bell mouth 4 of the surrounding rock mass) Ma Lisan, and apply Ma Lisan between the steel strand 6 and the gap 2 of the external grouting plug 11. The g...

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Abstract

The invention discloses a surrounding rock crushed zone hollow grouting anchor rope hole sealing device. The device comprises a grouting anchor rope; the grouting anchor rope comprises a grouting pipe, and multiple steel strands wound on the outer peripheral side of the grouting pipe in a twisted mode; one end of the grouting anchor rope is a grouting end, and the other end is sleeved in an external pulp stop plug, a tray and an anchor rope anchor in sequence; the grouting pipe is provided with a pulp outlet near the front end; a screw plug for blocking the grouting pipe is arranged at the other end of the grouting anchor rope; gaps are reserved between the steel strands and the external pulp stop plug; and marithan is coated in gaps between the outer peripheral side of the external pulp stop plug and surrounding rock masses and in the gaps reserved between the steel strands and the external pulp stop plug. Meanwhile, the invention further discloses a blockage method. The device is simple in operation and prominent in grouting and hole sealing operation effect for crushed surrounding rocks, guarantees high-pressure grouting effect, and reduces the pulp leakage phenomenon.

Description

technical field [0001] The invention relates to the technical field of anchor cable fastening and sealing holes, in particular to a hollow grouting anchor cable hole sealing device and a hole sealing method in a broken surrounding rock zone. Background technique [0002] In underground projects such as mine shafts, subways, tunnels, etc., for rock masses with developed cracks, structures, and broken loose rocks, especially for underground projects with high pressure, the use of ordinary bolt support can no longer meet the support requirements. The large support length improves the anchoring effect, and the rock mass is reinforced with grouted anchor cables to improve the bearing capacity of the surrounding rock itself. Practice has proved that anchoring and grouting reinforcement has a good effect on the surrounding rock of the roadway in the stress concentration area where the loosening range and loosening degree are relatively large. The principle of anchoring and grouting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D21/00E21D20/02
CPCE21D20/025E21D21/0026E21D21/0093
Inventor 姚强岭回新冬种照辉刘伟冬牛志军于利强徐强
Owner CHINA UNIV OF MINING & TECH
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