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Vertical shaft working face cement-water glass double-liquid and chemical slurry double-circle curtain combined grouting method

A technology of chemical grout and working face, which is applied in shaft equipment, earthwork drilling, wellbore lining, etc., can solve problems such as poor grouting effect, reduction of ineffective grouting amount, difficulty of grouting in fine sandstone aquifer, etc. The grouting effect is good, the grouting effect is good, and the grouting amount is not large

Active Publication Date: 2018-06-05
湖南楚湘建设工程集团有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the above-mentioned technical problems, the present invention provides a joint grouting method of cement-sodium silicate double liquid and chemical grout double-circle curtain on the shaft working face, which can effectively seal the cracks in the deep fine sandstone aquifer and reduce the amount of ineffective grouting Purpose, to solve the technical problems of difficult grouting in the fine sandstone aquifer and poor grouting effect

Method used

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  • Vertical shaft working face cement-water glass double-liquid and chemical slurry double-circle curtain combined grouting method
  • Vertical shaft working face cement-water glass double-liquid and chemical slurry double-circle curtain combined grouting method
  • Vertical shaft working face cement-water glass double-liquid and chemical slurry double-circle curtain combined grouting method

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing and specific embodiment (the cement-water glass double liquid of the skip main shaft working face of a certain metal mine in the south and chemical grout double-circle curtain grouting are embodiment) to the present invention, a kind of vertical shaft working face cement-water glass Double-fluid and chemical grout double-circle curtain grouting method, further explanation of specific measures and implementation process.

[0034] Pre-grouting of the fine sandstone aquifer working face of the skip main shaft of a metal mine in the south. The net diameter of the skip main shaft is 6m, the support thickness is 300mm, and the total depth is 832m. In the well depth of 606.1 ~ 679.5m section is the fine sandstone aquifer.

[0035] (1) The bottom of the working face is cleared

[0036] Remove the gangue from the shaft working face 1 at the bottom of the well, clean up the floating gangue, and raise the steel mold to a position 5-6...

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Abstract

The invention discloses a vertical shaft working face cement-water glass double-liquid and chemical slurry double-circle curtain combined grouting method. The method includes: arranging inner and outer circles of drill holes along a shaft working face, wherein the drill holes are different in angle; injecting cement-water glass double-liquid slurry into inner-circle grouting holes; injecting chemical slurry into outer-circle grouting holes; utilizing grouting in the drill holes to form a conical curtain blockage water-containing layer fracture outside the wall of a well. The method can block more water-containing fractures, is small in grouting amount and good in grouting effect and is a vertical shaft working face grouting technique which is safe, reliable and good in grouting effect.

Description

technical field [0001] The invention relates to the technical field of mine construction, in particular to a joint grouting method of cement-sodium silicate double liquid and chemical slurry double-circle curtain on the shaft working face. Background technique [0002] Shaft construction flooding is the most important factor affecting construction progress and quality. Different water control methods are adopted in shaft construction according to different lithologies, different water inflows, and different distributions of cracks in rock formations. The deep fine sandstone aquifer is deeply buried, the hydrostatic pressure is high, the cracks are small, and it is easy to be blocked by sedimentation, and the diffusion radius of the grouting slurry is small. The material is easy to detach from silicon oxide to form a layer of rust mud on the surface of the crack, and the delamination is easy to block the crack under the impact of high-pressure cement slurry, making the grouti...

Claims

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Application Information

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IPC IPC(8): E21D5/04
CPCE21D5/04
Inventor 赵延林刘强唐利明谢森林
Owner 湖南楚湘建设工程集团有限公司
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