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Thousand-meter deep well highland stress combination anchor rope grouting hole sealing device and hole sealing method

A technology of high ground stress and hole sealing device, which is applied in shaft equipment, sealing/isolation, wellbore lining, etc., which can solve the problems of small diffusion radius of grouting slurry, strengthening of surrounding rock strength, and slurry leakage, etc., so as to improve hole sealing effect, increase the diffusion radius, increase the effect of grouting pressure

Inactive Publication Date: 2018-11-23
PINGMEI SHENMA CONSTR ENG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sealing device of the drilling hole is not tightly sealed, and the grout is easy to leak from the cracks; if the grouting pressure exceeds 3MPa, the hole sealing device will be easily washed away, resulting in poor grouting effect or direct failure, and the cracks in the surrounding rock cannot be effectively filled. The slurry has a small diffusion radius, which cannot be used to anchor the anchor cable, fill and reinforce the cracks in the surrounding rock, strengthen the strength of the surrounding rock, and even fail to meet the support design requirements

Method used

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  • Thousand-meter deep well highland stress combination anchor rope grouting hole sealing device and hole sealing method
  • Thousand-meter deep well highland stress combination anchor rope grouting hole sealing device and hole sealing method
  • Thousand-meter deep well highland stress combination anchor rope grouting hole sealing device and hole sealing method

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Embodiment Construction

[0024] see figure 1 , 2 , 3, a kind of deep well high geostress combined anchor cable grouting sealing device, comprising the grouting pipeline 1 that grout is injected in the grouting hole, the hole sealing device 2 that plugging the grouting hole, described sealing The hole device 2 is installed in the grouting hole orifice; the anchor cable 3 is installed through the anchor cable support frame 6 in the grouting hole, and the guide cap 7 is installed on the head of the anchor cable 3, and the anchor cable 3 returns in the grouting hole. Air duct 5 is installed. The anchor cable 3 is sleeved in the snakeskin tube 4 . The grouting pipeline 1 is processed from a quarter galvanized pipe. Guide cap 7 is fixed on anchor cable 3 head by iron wire 14.

[0025] The hole sealer 2 is cement slurry and cotton yarn covered with cement slurry. The hole sealer can solidify the grouting hole orifice, prevent excessive grouting pressure from leaking and the hole sealer from rushing out a...

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Abstract

The invention relates to a thousand-meter deep well highland stress combination anchor rope grouting hole sealing device and hole sealing method used for grouting accessory of mines, tunnels and underground engineering shoring. The hole sealing device comprises a grouting pipeline which is used for pouring size into a grouting hole, a hole sealing device which seals the grouting hole, and the holesealing device is installed at the mouth of the grouting hole; an anchor rope is installed in the grouting hole through an anchor rope supporting frame, a guiding cap is installed at the head portionof the anchor rope, and a gas guiding pipe is installed in the grouting hole. The device has a simple structure, tight sealing and grouting pressure increasing can be achieved, the grouting diffusionradius can be increased to well fill cracking gaps of wall rock, and therefore the grouting shoring effect is improved; the device and the method can be widely applied to the mines, the tunnels and underground engineering shoring.

Description

technical field [0001] The invention relates to the technical field of grouting hole sealing, in particular to a grouting hole sealing device and hole sealing method for a thousand-meter deep well high ground stress combination anchor cable grouting matching used in mines, tunnels, and underground engineering support. Background technique [0002] With the extension of mine mining level, most mines have entered deep mining one after another, the mine pressure has intensified, the roadway deformation rate is fast, the deformation amount is large, and the surrounding rock structure is unstable. In the engineering reinforcement of underground engineering and mining engineering involved in the field of geotechnical engineering, grouting support is required. Grouting support is to fill the cracks in the surrounding rock with grout and strengthen the surrounding rock to improve the stability of the formation, so that the deformation and stability of the formation can be effectivel...

Claims

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Application Information

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IPC IPC(8): E21D11/10E21D20/02E21B33/13
CPCE21B33/13E21D11/10E21D20/02
Inventor 孙海良杜卫东李如波何志清卢海军陈泉建赵静雅吴铭孟庆妮吴晋晋
Owner PINGMEI SHENMA CONSTR ENG GROUP
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