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Limestone water-containing layer grouting reconstruction material suitable for superlong-distance pumping

A distance and pumping technology, applied in the field of material science, can solve the problems of difficult to achieve long-distance transportation, the influence of water glass temperature, and easy to block the grouting pipe, so as to achieve high-efficiency utilization, improve density, improve slurry and ease of use. sexual effect

Active Publication Date: 2015-12-23
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its slurry is easy to block the grouting pipe, and the stirred slurry must be used within 30 minutes, which is difficult to achieve long-distance transportation. Water glass as an activator is seriously affected by temperature, and grouting in deep limestone aquifers with high temperature and high pressure characteristics Difficult to be widely used in renovation projects

Method used

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  • Limestone water-containing layer grouting reconstruction material suitable for superlong-distance pumping
  • Limestone water-containing layer grouting reconstruction material suitable for superlong-distance pumping
  • Limestone water-containing layer grouting reconstruction material suitable for superlong-distance pumping

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Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0030] 1. Components and mass ratio: 68 parts of coal gangue, 20 parts of sulphoaluminate cement clinker, 12 parts of steel slag micropowder, and 9.5 parts of composite active initiator. Active initiator components and mass ratio are: 17 parts of alum, 24 parts of talcum powder, 11 parts of guar gum, 6 parts of hydroxypropyl methylcellulose, and 42 parts of gypsum powder.

[0031] 2. Preparation method: coal gangue and sulphoaluminate cement clinker grinding fineness 385m 2 / kg, according to the water-cement ratio 1.2:1, mix and stir evenly.

[0032] 3. The index parameters are as follows in Table 1:

[0033] Table 1

[0034]

[0035] The grouting reconstruction material prepared above was used to transform the limestone aquifer of the coal seam floor, and the long-distance pumping from the ground to the buried depth of -960 meters was realized, and the ambient temperature difference was 20°C, effectively transforming the aquifer into an aquifer .

specific Embodiment 2

[0037] 1. Components and mass ratio: 68 parts of coal gangue, 20 parts of sulphoaluminate cement clinker, 12 parts of steel slag micropowder, and 9.5 parts of composite active initiator. Active initiator components and mass ratio are: 14 parts of alum, 20 parts of talcum powder, 9 parts of guar gum, 8 parts of hydroxypropyl methylcellulose, and 46 parts of gypsum powder.

[0038] 2. Preparation method: coal gangue and sulphoaluminate cement clinker grinding fineness 383m 2 / kg, according to the water-cement ratio 1.2:1, mix and stir evenly.

[0039] 3. The index parameters are as follows in Table 2:

[0040] Table 2

[0041]

[0042] The grouting reconstruction material prepared above was used in the grouting reconstruction of the aquifer of the tunnel floor. The stone body formed after the grout injection has high strength and good impermeability. Pulp management effect.

specific Embodiment 3

[0044] 1. Components and mass ratio: 66 parts of coal gangue, 24 parts of sulphoaluminate cement clinker, 10 parts of steel slag micropowder, and 11 parts of composite active initiator. Active initiator components and mass ratio are: 17 parts of alum, 24 parts of talcum powder, 11 parts of guar gum, 6 parts of hydroxypropyl methylcellulose, and 42 parts of gypsum powder.

[0045] 2. Preparation method: coal gangue and sulphoaluminate cement clinker grinding fineness 395m 2 / kg, according to the water-cement ratio 1.2:1, mix and stir evenly.

[0046] 3. The index parameters are as follows in Table 3:

[0047] table 3

[0048]

[0049] The grouting reconstruction material prepared above is used for the grouting reconstruction of the floor aquifers of subways, etc., and the stone body formed after the grout injection has high strength, which has a good effect of grouting treatment.

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Abstract

The invention relates to a limestone water-containing layer grouting reconstruction material suitable for superlong-distance pumping, and the material is composed of, in parts by mass, 65-70 parts of burned coal gangue, 20-25 parts of sulphate aluminium cement clinker, 8-15 parts of steel slag micro powder, and 9-12 parts of an extra-additive active initiator. The active initiator comprises, in parts by mass, 13-19 parts of alum, 20-28 parts of talcum powder, 8-13 parts of guar gum, 5-8 parts of hydroxypropyl methyl cellulose, and 40-55 parts of gypsum powder. The material possesses the characteristics of being high in slurry stability, weak in environment temperature influence, suitable for long-distance pumping, good in grouting property, high in stone body density, high in impermeability, wide in raw material source, low in price, and the like.

Description

technical field [0001] The invention belongs to the technical field of material science and relates to a limestone aquifer grouting reconstruction material suitable for ultra-long-distance pumping. Background technique [0002] In recent years, with the gradual development of coal mining, the problem of Ordovician limestone water damage has become increasingly prominent. Especially in the process of coal mining, water inrush accidents with Ordovician karst water at the bottom of the coal seam as the source of water are very likely to occur, seriously affecting Safe and efficient mining of coal resources. As an effective way to prevent and control water hazards in Ordovician limestone, grouting has been widely used in mine construction and coal mining by increasing the thickness and water resistance of the aquifer, or transforming the aquifer into an aquifer. Because the grouting material used in this method is large and limited by the underground environment space, it is ca...

Claims

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Application Information

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IPC IPC(8): C04B28/14
Inventor 李术才李召峰刘人太沙飞贾广辉白继文冯啸孙子正徐程张世杰
Owner SHANDONG UNIV
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