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Mining high-strength anti-shrinkage water plugging material and preparation method thereof

A high-strength, anti-shrinkage technology, applied in the field of mining materials, can solve the problems of low compressive strength, low strength, large shrinkage, etc., and achieve the effect of improving the compressive strength

Active Publication Date: 2021-01-05
渭南陕煤启辰科技有限公司
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0004] The purpose of the present invention is to provide a high-strength anti-shrinkage water blocking material for mining and its preparation method to solve the problems of severe shrinkage and low compressive strength of the inherent inorganic water blocking material after hardening. The present invention effectively improves the shrinkage of the original inorganic material. Big, low strength disadvantage

Method used

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  • Mining high-strength anti-shrinkage water plugging material and preparation method thereof

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preparation example Construction

[0020]A method for preparing a high-strength anti-shrinkage water plugging material for mines includes the following steps:

[0021]Step 1. Weigh polyvinyl alcohol, sulphoaluminate cement, quartz powder, slag powder, gypsum powder, quicklime, retarder, crosslinker, accelerator and stabilizer according to the mass ratio;

[0022]Step 2. Add the polyvinyl alcohol, sulfoaluminate cement, quartz powder, slag powder, gypsum powder, and quicklime weighed in step 1 to the ball mill to grind to particles with an average particle size of 2mm, and then mix with the crosslinking agent. The coagulant and the stabilizer are put into the mixer and mixed evenly, and the high-strength water blocking material of the present invention is prepared.

Embodiment 1

[0025]Weigh 300g of polyvinyl alcohol, 5820g of sulphoaluminate cement, 500g of quartz powder, 1500g of slag powder, 600g of dihydrate gypsum, and 480g of quicklime, and mix them with a ball mill to an average particle size of 2mm. Then add 100g of sodium gluconate. , Sodium sulfate 200, sodium nitrate 200g, hydroxypropyl methylcellulose 300g, use a mixer to stir for 30min to get.

Embodiment 2

[0027]Weigh 500g of polyvinyl alcohol, 6610g of sulfoaluminate cement, 1000g of quartz powder, 550g of slag powder, 240g of hemihydrate, and 400g of quicklime and mix them with a ball mill to a particle with an average particle size of 2mm, and then add 100g of citric acid. 100g boric acid, 200g lithium carbonate, 300g carboxymethyl hydroxyethyl cellulose, use a blender to stir for 30 minutes.

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Abstract

The invention discloses a mining high-strength anti-shrinkage water plugging material and a preparation method; the mining high-strength anti-shrinkage water plugging material is composed of the following raw materials by mass: 3-10 parts of polyvinyl alcohol, 50-70 parts of sulphoaluminate cement, 5-20 parts of quartz powder, 3-15 parts of slag powder, 2-6 parts of gypsum powder, 2-5 parts of quicklime, 1-5 parts of a retarder, 1-3 parts of a cross-linking agent, 1-5 parts of a coagulant, and 1-5 parts of a stabilizer. The preparation method comprises the following steps: adding the polyvinylalcohol, sulphoaluminate cement, quartz powder, slag powder, gypsum powder and quick lime into a ball mill, grinding into particles with the average particle size of 2 mm, putting the particles, thecross-linking agent, the coagulant and the stabilizer into a stirrer, and uniformly stirring, thereby obtaining the high-strength shrinkage-resistant water plugging material for mining. According to the invention, the disadvantages of large shrinkage and low strength of the original inorganic material are effectively improved.

Description

Technical field[0001]The invention relates to the technical field of mining materials, in particular to a high-strength anti-shrinkage water plugging material used in underground coal mines and a preparation method.Background technique[0002]The complex hydrogeological conditions of coal mines in our country have caused many coal mines to suffer from floods. On the one hand, water hazards will lead to a harsh construction environment for workers and severely affect the mining progress of coal mines. On the other hand, it will also greatly test the drainage facilities of coal mines and increase the cost of drainage. Therefore, prevention of water hazards in coal mines is extremely important. Realistic. Water blocking materials are an important method of preventing water hazards. By using water blocking materials, the burden of coal mine drainage can be reduced, coal mining efficiency can be improved, and coal mine service life extended.[0003]In recent years, water shutoff technology h...

Claims

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Application Information

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IPC IPC(8): C04B28/06C04B111/28
CPCC04B28/06C04B2111/28C04B2201/50C04B24/2623C04B14/06C04B18/141C04B22/064C04B22/143C04B24/06C04B24/383C04B22/147C04B22/085C04B22/0013C04B22/10C04B24/163C04B24/00C04B22/124Y02W30/91
Inventor 耿耀强胡国和梁前赵腾飞李建军李贤良
Owner 渭南陕煤启辰科技有限公司
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