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High-flow velocity and high-flow hydrodynamic-plugging fiber grouting material and preparation method thereof

A grouting material and water sealing technology, applied in the field of preparation of dynamic water sealing materials, can solve the problems of strength and volume shrinkage, poor anti-scour performance, high solubility, etc., and achieve good economic and social benefits, strong resistance to The effect of permeability and corrosion resistance and excellent comprehensive performance

Inactive Publication Date: 2018-12-18
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the exposed underground karst pipeline has a large amount of water and a fast water flow, and ordinary anti-dynamic water grouting materials are difficult to meet the plugging requirements.
Simple cement-water glass slurry has high solubility in water, and its strength and volume will shrink to a large extent in the later stage, and its erosion resistance is poor; although modified cement-water glass slurry solves the shortcoming of the narrow controllable range of initial setting time of water glass , but when the water velocity is greater than 0.5m / s, the retention rate is still low; there are various types of chemical grouting materials, although they have excellent performance, but they are harmful to the environment, poor in durability, short in diffusion distance, and high in cost. defect

Method used

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  • High-flow velocity and high-flow hydrodynamic-plugging fiber grouting material and preparation method thereof
  • High-flow velocity and high-flow hydrodynamic-plugging fiber grouting material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0052] A method for preparing a high-velocity and large-flow flowing water plugging grouting material, comprising the following steps:

[0053] (1) According to the water-cement ratio of 0.8, first add water to the mixing tank, and then add cement (strength grade P.O42.5, Blaine's specific surface area is 300-350m 2 / kg), during the configuration process, the cement needs to be stirred continuously;

[0054] (2) Add fibers to the grouting material in step (1) according to the standard of adding polypropylene monofilament fiber 0.5kg in every cubic grouting slurry, the length of the polypropylene monofilament fiber is 9mm, and the diameter is 30-48μm;

[0055] (3) Mix the water glass with a Baume degree of 40 and the grouting slurry after adding fibers in step (2) at a volume ratio of 1:5, and inject it into the borehole with a double-liquid grouting pump.

[0056] After the slurry on the spot of the present embodiment is injected into the borehole, compared with the same rat...

Embodiment 2

[0058] A method for preparing a high-velocity and large-flow flowing water plugging grouting material, comprising the following steps:

[0059] (1) According to the water-cement ratio of 1.0, first add water to the mixing tank, and then add cement (strength grade P.O32.5, Blaine's specific surface area is 300-350m 2 / kg), during the configuration process, the cement needs to be stirred continuously;

[0060] (2) add fiber to the grouting material in step (1) according to the standard of adding polypropylene monofilament fiber 0.7kg in every cubic grouting slurry, the length of described polypropylene monofilament fiber is 16mm, and diameter is 18-30μm;

[0061] (3) Mix the water glass with a Baume degree of 39 and the grouting slurry after adding fibers in step (2) according to a volume ratio of 1:4, and inject it into the borehole with a double-liquid grouting pump.

Embodiment 3

[0063] A method for preparing a high-velocity and large-flow flowing water plugging grouting material, comprising the following steps:

[0064] (1) According to the water-cement ratio of 0.9, first add water to the mixing tank, and then add cement (strength grade P.O42.5, Blaine's specific surface area is 300-350m 2 / kg), during the configuration process, the cement needs to be stirred continuously;

[0065] (2) Add fibers to the grouting material in step (1) according to the standard of adding 0.5kg of cellulose fiber in every cubic grouting slurry, the length of the polypropylene monofilament fiber is 9mm, and the diameter is 15- 20μm;

[0066] (3) Mix the water glass with a Baume degree of 40 and the grouting slurry after adding fibers in step (2) at a volume ratio of 1:5, and inject it into the borehole with a double-liquid grouting pump.

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Abstract

The invention relates to a high-flow velocity and high-flow hydrodynamic-plugging grouting material and a preparation method thereof, and belongs to the field of preparation of hydrodynamic-plugging materials. The grouting material comprises a fiber, a cementing material and a quick setting material, and the fiber comprises one of a polypropylene monofilament fiber, a cellulose fiber and a polypropylene mesh fiber. The method comprises the following steps: 1) preparing a grouting slurry from the cementing material; and 2) adding the fiber to the grouting slurry obtained in step 1), performinguniform stirring, adding the quick setting agent, and performing grouting to obtain the grouting material. The grouting material has the characteristics of good fluidity, good hydrodynamic dispersingresistance, adjustable condensing time and simplicity in operation, can form a complete concretion at a small water flow speed, can form multiple concretion blocks at a high water flow speed, can be used as an aggregate to fill a hydrodynamic channel in order to achieve the purposes of filling and water-stopping, and is a good hydrodynamic-plugging grouting material.

Description

technical field [0001] The invention relates to the field of preparation of dynamic water sealing materials, in particular to a high flow rate and large flow flowing water sealing fiber grouting material and a preparation method thereof. Background technique [0002] Karst is strongly developed in Southwest my country, with 56% of the exposed surface karst area. Rainfall infiltrates into the ground very quickly, and quickly converts into underground runoff after infiltration. During the implementation of mines, tunnels and deep foundation pits in karst areas, hidden karst pipelines, underground rivers or caves are often exposed, and their supply sources are extensive and sufficient, often causing serious water inrush disasters. However, the exposed underground karst pipeline has a large amount of water and a fast water flow, and ordinary anti-dynamic water grouting materials are difficult to meet the plugging requirements. Simple cement-water glass slurry has high solubilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04E02D19/16C04B111/70
CPCC04B28/04C04B2111/70E02D19/16E02D2300/002C04B16/0633C04B22/00C04B18/24
Inventor 李术才张益杰张波李海燕王书刚赵国东韩俊飞刘功杰李召峰杨磊孙怀凤徐振浩胥洪斌常涛
Owner SHANDONG UNIV