Grouting material for underground mine roadway and grouting water control method

A technology of grouting materials and roadways, which is applied in underground chambers, tunnels, tunnel linings, etc., can solve the problems that the grouting effect does not meet the design requirements, and achieve optimized grouting construction technology, economical and reasonable, and good grouting effect Effect

Inactive Publication Date: 2017-04-19
HEBEI IRON & STEEL GRP MINING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the actual grouting process, the grouting effect is limited by many factors such as grouting material, grouting hole layout, grouting equipmen

Method used

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  • Grouting material for underground mine roadway and grouting water control method
  • Grouting material for underground mine roadway and grouting water control method
  • Grouting material for underground mine roadway and grouting water control method

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Embodiment 1: The specific process of the grouting water control method for the local underground mine roadway is as follows.

[0029] (1) Project overview: The roadway excavation project in the middle section of the ramp-400m, on a certain day in 2015, when it was constructed to 483.5m along the vein roadway, it encountered a broken zone, and a large amount of bedrock fissure water gushed out, with a water inflow of 21.3m 3 / h. This is the junction of ore and rock. The ore body develops longitudinally along the roadway, and the extrusion deformation and crushing are serious, and the fissures are very developed, accompanied by water gushing from bedrock fissures. The drainage pressure of the local drainage system ensures the safety of shaft construction.

[0030] (2) Construction plan:

[0031] A. Deep hole grouting method and grouting hole layout: According to the development degree of cracks and the characteristics of large water inflow in this project, both ends ad...

Embodiment 2

[0037] Embodiment 2: The specific process of the grouting water control method for the local underground mine roadway is as follows.

[0038] (1) Project overview: The roadway excavation project in the middle section of the ramp-375m, on a certain day in 2016, when it was constructed to the 104.0m of the double-track transportation roadway, it encountered a broken zone, the surrounding rock was broken, and the cracks developed longitudinally along the roadway, and there were cracks in the bedrock The water gushes out, and the water gushing volume on the working face reaches 24.5m 3 / h. The TRT advanced detection was carried out on the working face, and the results showed that there were three sections of the broken zone, the first section was within the range of 9 meters to 38 meters in front of the working face, the second section was within the range of 41 meters to 58 meters in front of the working face, and the third section was within the range of Within the range of 66 ...

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Abstract

The invention discloses a grouting material for an underground mine roadway and a grouting water control method. The grouting water control method comprises the steps that (1) 11-15 grouting drill holes are formed round the outline of the roadway, and the angles of the drill holes extend to the outside of the outline of the roadway; (2) grouting is conducted thought the grouting material, the grouting material is formed by mixing cement paste, sodium silicate and an admixture, and the ratio of the cement paste to the sodium silicate is 1:1-1:0.8; and (3) after grouting, an inspection hole is formed in the center of the roadway for inspecting the grouting condition. According to the grouting water control method, the design of the grouting material, forming of the grouting holes, grouting equipment and grouting pressure are improved, the grouting construction process is optimized, the grouting quality is improved, and the effect that the grouting effect reaches the design requirement is ensured. According to the grouting water control method, on the one hand, rock cracks are blocked so as to achieve the water burst blocking effect, on the other hand, surrounding rock is reinforced, and construction safety is ensured. The characteristics of the good grouting effect, safety, low cost and the like are achieved.

Description

technical field [0001] The invention relates to the technical field of underground mine construction, in particular to a water control method for underground mine roadway grouting. Background technique [0002] Underground mines affected by Quaternary and other water-bearing rock formations need to closely observe changes in roadway geological conditions during infrastructure construction, and timely take waterproof measures to control possible excavation water inrush. At present, in the process of mine production and construction, most of the methods used are to drill holes, and use a grouting machine to inject cement slurry and other media along the drill holes, so that the grouting medium spreads along the cracks in the surrounding rocks. On the one hand, it fills the rocks. Cracks are used to block water gushing; on the other hand, the surrounding rock is reinforced to ensure the safety of excavation. [0003] In the actual grouting process, the grouting effect is limit...

Claims

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Application Information

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IPC IPC(8): E21D9/00E21D11/10E21D11/38C04B28/26
CPCE21D9/002C04B28/26E21D11/10E21D11/38C04B22/124C04B24/122C04B7/02
Inventor 李万涛闫满志刘万富王文才王磊刘辉范天文程晓博
Owner HEBEI IRON & STEEL GRP MINING
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