Water glass slurry for grouting on mine working surface

Abstract

The invention provides water glass slurry for grouting on a mine working surface, wherein, the slurry takes ethylene acetate as a curing agent and water glass as a main agent; and 100 parts of slurry comprises the following components by volume ratio: 15-60 parts of the water glass 38 Be', 1-10 parts of the ethylene acetate and water. In the invention, the water-soluble ethylene acetate is taken as the curing agent; and the obtained grouting material has the advantages of low viscosity, high permeability, adjustable gelling time, simple components, non-corrosiveness and the like. The water glass slurry can be applied to the fields such as anti-seepage for hydraulic engineering, water plugging for a mine and the like, and the slurry especially has good application prospect on water blocking with grout for the working surface of an underground microfracture stratum and a porosity stratum.

Description

Technical field: [0001] The invention belongs to the water glass chemical grouting material, which can be used for leakage prevention and seepage prevention in water conservancy projects, ground pre-grouting in mine construction, working face grouting and well wall post-grouting for water plugging. In particular, a kind of water glass slurry for grouting in mine working face. Background technique: [0002] With the development of mineral resources, the depth of mine construction is getting deeper and deeper, and the probability of special formations such as micro-cracked strata and porous stratum aquifers in the process of well construction is increasing, such as micro-cracks such as Pingdingshan sandstone and Liujiagou sandstone. Rock formations or porous formations have a large amount of water inflow and high water pressure, and it is difficult to achieve an ideal water blocking effect with granular slurry materials such as single-liquid cement slurry and clay cement slurr...

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Problems solved by technology

[0003] Water glass series chemical grouting material has also been reported, and CN 101265059A, Li Zhiguo etc. have studied sulfuric acid as the water glass solution grouting material of curing agent, and the curing rate is difficult to control, and acidic slurry (slurry PH=5 in the report) is not suitable for ordinary The grouting equipment is corrosive, and the engineering application has limitations; CN 86107196A and CN 1032354A, the water glass grout researched by the Guangzhou Institute of Chemistry, have the disadvantages of being difficult to guarantee the stability due to the large amount of grout components and complex matching