A single liquid stabilized cement-based grout for reinforcement of the surrounding rock of a thousand-meter-deep horizontal roadway

Abstract

The invention discloses single-liquid-stabilized cement-based slurry for a surrounding rock consolidation of 1000-meter-depth horizontal roadway. The slurry comprises the following components in parts by weight: 80-100 parts of a gel material, 60-150 parts of water and 1-15 parts of a compound admixture, wherein the compound admixture comprises 0-100 parts of an inorganic stabilizer, 0-100 parts of an organic stabilizer, 0-100 parts of a structure reinforcing agent and 0-100 parts of a compound retarder. Due to physical and chemical actions of the compound admixture, the slurry has the excellent characteristics of low viscosity, good liquidity, high stability, long coagulation time and controllability; a slurry consolidated body has the characteristics of low early strength and high long-term strength, normal tensile bonding strength and shear strength.

Description

technical field

[0001] The invention relates to a cement slurry used in the field of roadway surrounding rock reinforcement in coal mine construction, in particular to a stable cement-based slurry suitable for the technical field of ground pre-grouting for strengthening the surrounding rock of a thousand-meter-deep horizontal roadway. Background technique

[0002] The ground pre-grouting technology for strengthening the surrounding rock of the horizontal roadway in a thousand-meter deep well refers to the use of high-precision drilling trajectory control technology to carry out ground pre-grouting reinforcement on the unstable and broken surrounding rock of the underground horizontal roadway through horizontal drilling.

[0003] The currently used surrounding rock grouting reinforcement materials include chemical grout and cement grout.

[0004] Chemical slurries mainly include acrylamide and polyurethane, which have the advantages of good permeability, adjustable gel time, ...

Examples

Embodiment 1

[0017] The single liquid stabilized cement-based slurry for reinforcing the surrounding rock of a thousand-meter-deep horizontal roadway in this embodiment consists of the following components: PO.42.5 ordinary Portland cement 1000kg, water 1000kg, structural reinforcing agent 100kg, inorganic stabilizer 5kg, organic Stabilizer 0.3kg, retarder 0.3kg. In 100kg of structural reinforcing agent: 50kg of fly ash and 50kg of silica fume; in 5kg of inorganic stabilizer: 1kg of sodium bentonite, 1kg of fly ash, 1kg of sodium silicate, and 2kg of sepiolite; In 0.3kg of organic stabilizers: 0.05kg of polyvinyl alcohol, 0.05kg of polyacrylamide, 0.05kg of carboxymethyl cellulose, 0.05kg of hydroxypropyl cellulose, and 0.05 kg of methyl hydroxyethyl cellulose ether kg, methyl hydroxypropyl cellulose ether is 0.05kg; in 0.3kg retarder: tartaric acid is 0.05kg, citric acid is 0.05kg, salicylic acid is 0.05kg, cellulose is 0.05kg, sodium phosphate is 0.05 kg and sodium gluconate is 0.05kg. ...

Embodiment 2

[0020] The single-liquid stable cement-based grout for reinforcing the surrounding rock of a thousand-meter-deep horizontal roadway in this embodiment consists of the following components:

[0021] PO.42.5 Ordinary Portland cement 1000kg, water 1000kg, structural reinforcing agent 100kg, inorganic stabilizer 5kg, organic stabilizer 0.7kg, retarder 0.7kg.

[0022] In 100kg structural reinforcing agent: fly ash is 30kg, silica fume is 70kg; in 5kg inorganic stabilizer: sodium bentonite is 1kg, sodium silicate is 2kg, sepiolite is 2kg; in 0.7kg organic stabilizer Medium: 0.1kg for polyvinyl alcohol, 0.2kg for polyacrylamide, 0.15kg for carboxymethyl cellulose, 0.05kg for hydroxypropyl cellulose, 0.1kg for methyl hydroxyethyl cellulose ether, 0.1kg for methyl hydroxypropyl cellulose Base cellulose ether is 0.1kg; in 0.7kg retarder: tartaric acid is 0.15kg, citric acid is 0.05kg, salicylic acid is 0.1kg, cellulose is 0.2kg, sodium phosphate is 0.05kg and sodium gluconate is 0.15kg...

Embodiment 3

[0025] The single-liquid stable cement-based grout for reinforcing the surrounding rock of a thousand-meter-deep horizontal roadway in this embodiment consists of the following components:

[0026] PO.42.5 Ordinary Portland cement 1000kg, water 1000kg, structural reinforcing agent 100kg, inorganic stabilizer 5kg, organic stabilizer 1.0kg, retarder 1.0kg.

[0027] In 100kg structural reinforcing agent: fly ash is 80kg, silica fume is 20kg; in 5kg inorganic stabilizer: sodium bentonite is 1.4kg, sodium silicate is 1.3kg, sepiolite is 2.3kg; in 1.0kg Among organic stabilizers: 0.2kg of polyvinyl alcohol, 0.15kg of polyacrylamide, 0.1kg of carboxymethyl cellulose, 0.05kg of hydroxypropyl cellulose, 0.2kg of methyl hydroxyethyl cellulose ether, Hydroxypropyl cellulose ether is 0.3kg; in 1.0kg retarder: tartaric acid is 0.15kg, citric acid is 0.25kg, salicylic acid is 0.1kg, cellulose is 0.12kg, sodium phosphate is 0.08kg and glucose Sodium acid is 0.3kg.

[0028] The specific gra...

technical field

[0001] The invention relates to a cement slurry used in the field of roadway surrounding rock reinforcement in coal mine construction, in particular to a stable cement-based slurry suitable for the technical field of ground pre-grouting for strengthening the surrounding rock of a thousand-meter-deep horizontal roadway. Background technique

[0002] The ground pre-grouting technology for strengthening the surrounding rock of the horizontal roadway in a thousand-meter deep well refers to the use of high-precision drilling trajectory control technology to carry out ground pre-grouting reinforcement on the unstable and broken surrounding rock of the underground horizontal roadway through horizontal drilling.

[0003] The currently used surrounding rock grouting reinforcement materials include chemical grout and cement grout.

[0004] Chemical slurries mainly include acrylamide and polyurethane, which have the advantages of good permeability, adjustable gel time, ...

Examples

Embodiment 1

[0017] The single liquid stabilized cement-based slurry for reinforcing the surrounding rock of a thousand-meter-deep horizontal roadway in this embodiment consists of the following components: PO.42.5 ordinary Portland cement 1000kg, water 1000kg, structural reinforcing agent 100kg, inorganic stabilizer 5kg, organic Stabilizer 0.3kg, retarder 0.3kg. In 100kg of structural reinforcing agent: 50kg of fly ash and 50kg of silica fume; in 5kg of inorganic stabilizer: 1kg of sodium bentonite, 1kg of fly ash, 1kg of sodium silicate, and 2kg of sepiolite; In 0.3kg of organic stabilizers: 0.05kg of polyvinyl alcohol, 0.05kg of polyacrylamide, 0.05kg of carboxymethyl cellulose, 0.05kg of hydroxypropyl cellulose, and 0.05 kg of methyl hydroxyethyl cellulose ether kg, methyl hydroxypropyl cellulose ether is 0.05kg; in 0.3kg retarder: tartaric acid is 0.05kg, citric acid is 0.05kg, salicylic acid is 0.05kg, cellulose is 0.05kg, sodium phosphate is 0.05 kg and sodium gluconate is 0.05kg. ...

Embodiment 2

[0020] The single-liquid stable cement-based grout for reinforcing the surrounding rock of a thousand-meter-deep horizontal roadway in this embodiment consists of the following components:

[0021] PO.42.5 Ordinary Portland cement 1000kg, water 1000kg, structural reinforcing agent 100kg, inorganic stabilizer 5kg, organic stabilizer 0.7kg, retarder 0.7kg.

[0022] In 100kg structural reinforcing agent: fly ash is 30kg, silica fume is 70kg; in 5kg inorganic stabilizer: sodium bentonite is 1kg, sodium silicate is 2kg, sepiolite is 2kg; in 0.7kg organic stabilizer Medium: 0.1kg for polyvinyl alcohol, 0.2kg for polyacrylamide, 0.15kg for carboxymethyl cellulose, 0.05kg for hydroxypropyl cellulose, 0.1kg for methyl hydroxyethyl cellulose ether, 0.1kg for methyl hydroxypropyl cellulose Base cellulose ether is 0.1kg; in 0.7kg retarder: tartaric acid is 0.15kg, citric acid is 0.05kg, salicylic acid is 0.1kg, cellulose is 0.2kg, sodium phosphate is 0.05kg and sodium gluconate is 0.15kg...

Embodiment 3

[0025] The single-liquid stable cement-based grout for reinforcing the surrounding rock of a thousand-meter-deep horizontal roadway in this embodiment consists of the following components:

[0026] PO.42.5 Ordinary Portland cement 1000kg, water 1000kg, structural reinforcing agent 100kg, inorganic stabilizer 5kg, organic stabilizer 1.0kg, retarder 1.0kg.

[0027] In 100kg structural reinforcing agent: fly ash is 80kg, silica fume is 20kg; in 5kg inorganic stabilizer: sodium bentonite is 1.4kg, sodium silicate is 1.3kg, sepiolite is 2.3kg; in 1.0kg Among organic stabilizers: 0.2kg of polyvinyl alcohol, 0.15kg of polyacrylamide, 0.1kg of carboxymethyl cellulose, 0.05kg of hydroxypropyl cellulose, 0.2kg of methyl hydroxyethyl cellulose ether, Hydroxypropyl cellulose ether is 0.3kg; in 1.0kg retarder: tartaric acid is 0.15kg, citric acid is 0.25kg, salicylic acid is 0.1kg, cellulose is 0.12kg, sodium phosphate is 0.08kg and glucose Sodium acid is 0.3kg.

[0028] The specific gra...