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Chemical grouting material for reinforcing loose and broken bedrock

A chemical grouting material and grouting material technology, applied in the application, household appliances, other household appliances and other directions, can solve the problems of a large number of harmful gases, spontaneous combustion of consolidated bodies, detonation of gas, etc., to reduce prices, increase flash point, The effect of lowering the polymerization temperature

Active Publication Date: 2012-10-10
HANGZHOU GUODIAN DAM SAFETY ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although ordinary polyurethane grouting technology can achieve the purpose of fast water stop and reinforcement, there are two major disadvantages. One is its high price, and the other is that it generates high heat during polymerization reaction, which may cause spontaneous combustion of the consolidated body, which is easy to cause Ignite the coal seam or other underground combustibles to form an underground fire
Once the polyurethane grouting material used in mines spontaneously ignites due to high temperature reaction, it will generate a large amount of harmful gases (CO, CO2 and cyanide, etc.), and may even ignite or detonate the gas, so there is a great potential safety hazard

Method used

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  • Chemical grouting material for reinforcing loose and broken bedrock
  • Chemical grouting material for reinforcing loose and broken bedrock
  • Chemical grouting material for reinforcing loose and broken bedrock

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1. In this embodiment, the chemical grouting material is composed of two components A and B, and the raw material formulas are as follows:

[0034] A component:

[0035] Sodium silicate solution (Na 2 O nSiO 2 , modulus n=2.8, density d=1.37) 99 parts by weight

[0036] Polysorbate (Tween-80) 1 part by weight

[0037] B component:

[0038]

[0039] Stir components A and B separately, and mix and stir evenly according to component A / component B=1 / 1 (volume ratio) when using.

[0040] The product technical indicators obtained according to this implementation are as follows:

[0041] performance

Embodiment 2

[0042] Embodiment 2, the proportioning of the raw material of this example is

[0043] A component:

[0044] Sodium silicate solution (Na 2 O nSiO 2 , modulus n=2.5, density d=1.48) 99 parts by weight

[0045] Alkylphenol polyoxyethylene ether (OP-10) 1 part by weight

[0046] B component:

[0047]

[0048] Stir components A and B separately, and mix and stir evenly according to component A / component B=1 / 1 (volume ratio) when using.

[0049] The product technical indicators obtained according to this implementation are as follows:

[0050] performance

Embodiment 3

[0051] Embodiment 3, the proportioning of the raw material of this example is

[0052] A component:

[0053] Potassium silicate solution (K 2 O nSiO 2 , modulus n=2.8, density d=1.43) 96 parts by weight

[0054] Sodium dodecylbenzenesulfonate 2 parts by weight

[0055] Triethanolamine 2 parts by weight

[0056] B component:

[0057]

[0058]

[0059] Stir components A and B separately, and mix and stir evenly according to component A / component B=1 / 1 (volume ratio) when using.

[0060]The technical index of the product that above embodiment obtains is as follows:

[0061] performance

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Abstract

The invention relates to a chemical grouting material for reinforcing loose and broken bedrock. The invention provides a chemical grouting material for reinforcing the loose and broken bedrock, in order to improve the flash point, the burning point and the antistatic performance of the grouting material, reducing the temperature in polymerization reaction and lowering the cost. According to the technical scheme provided by the invention, the chemical grouting material for reinforcing the loose and broken bedrock comprises two components, including a component A and a component B; according to the formulas of the raw materials, the component A comprises 90 to 100 parts by weight of sodium silicate or potassium metasilicate solution, 0 to 5 parts by weight of surface active agent, and 0 to 5 parts by weight of accelerator; the component B comprises 70 to 90 parts by weight of isocyanate, 5 to 20 parts by weight of plasticizer, 0.5 to 3 parts by weight of polyalkane silicone, and 0 to 5 parts by weight of catalyst; the components A and B are uniformly mixed respectively; and in use, the components A and B are mixed according to the volume ratio of 1: 1. The chemical grouting material can be applied to quickly reinforcing the broken coal bed and rock bed and blocking water leakage.

Description

technical field [0001] The invention relates to a chemical grouting material, in particular to a chemical grouting material for reinforcing loose and broken bedrock. It is suitable for rapid reinforcement of broken coal seams and rock formations in coal mines, tunnels, tunnels and other underground projects, as well as plugging and leakage water treatment. Background technique [0002] Chemical grouting technology is an indispensable advanced technology for foundation reinforcement, seepage prevention and plugging, and repair of concrete defects in modern engineering. It is to prepare certain chemical materials (inorganic or organic materials) into low-viscosity solutions, and use chemical grouting pumps (single-liquid pumps or double-liquid pumps), simple hand pumps and other pressure-feeding equipment to pour them into the formation or gaps. , to increase the strength of the formation, reduce permeability, prevent formation deformation and increase concrete compactness. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26C04B38/10C04B111/70
Inventor 林忠华王丽娟张捷张继霞程红沈幼娟
Owner HANGZHOU GUODIAN DAM SAFETY ENG
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