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A kind of wet-type thin spray material for mining and its application

A thin-spray, wet-type technology, applied in mining equipment, shaft equipment, shaft lining, etc., can solve problems such as metal mesh or anchor rod breakage, mine safety threats, and affect normal mine production, etc., to save transportation costs and improve airtightness Good, the effect of saving environmental treatment costs

Active Publication Date: 2022-08-02
安徽省钢铮矿山科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some severely corroded metal meshes and weathered and loose surrounding rocks have broken metal meshes or bolts, seriously affecting the normal production of mines and posing a serious threat to mine safety

Method used

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  • A kind of wet-type thin spray material for mining and its application
  • A kind of wet-type thin spray material for mining and its application

Examples

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Embodiment 1

[0057] A wet-type thin spray material for mining, comprising the following components in parts by weight: 20 parts of white cement, 60 parts of quartz powder, 15 parts of sodium dihydrogen phosphate as an inorganic film-forming agent, and a quick-setting agent of aluminum oxide cooked 5 servings.

[0058] The application of the wet-type thin spray material for mining includes the following steps:

[0059] (1) Mix the thin spray material with water at a mass ratio of 1:0.4 and fully stir to obtain a uniform slurry;

[0060] (2) Inject the slurry into the tank of the shotcrete machine, adjust the tank pressure to 0.4-0.6MPa, and prepare for spraying construction;

[0061] (3) Open the discharge valve at the bottom of the tank and the air pipe valve of the spray gun in turn. After the air is sprayed, open the material pipe valve of the spray gun until the slurry is sprayed from the spray gun, and then the construction can be carried out. The single spray thickness of the slurry...

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Abstract

The invention provides a wet-type thin spray material for mining, which comprises the following components in parts by weight: 15-25 parts of white cement, 50-70 parts of quartz powder, 10-20 parts of inorganic film-forming agent, and 1 to 10 copies of coagulant. The wet-type thin spray material for mining provided by the invention has the advantages of fast spraying speed, strong cohesive force, good airtightness, bending resistance and high shear strength. The invention also provides a preparation method of the spray-thin coating. The pneumatic shotcrete machine adopted by the method is small in size, light in weight, small in ground and underground area, saves environmental treatment costs and transportation costs, and has low use costs.

Description

technical field [0001] The invention relates to the technical field of mine dust prevention, in particular to a wet-type thin spray material for mining and its application. Background technique [0002] Anchor net support is a major progress in the reform of coal mine support technology, and has played an important role in improving single entry and reducing support costs. However, with the increase of the service time of the roadway, under the action of the deformation and expansion of the roadway, the force of the bolt gradually increases, and under the special condition of the wet underground, the rock layer on the surface of the roadway gradually weathers and the strength of the surrounding rock decreases. Under the action of the bolt, the weathered surrounding rock is easily crushed by the bolt pallet, and once the surrounding rock under the pallet is damaged, the force of the bolt will decrease or even fail completely. What is more serious is that in the wet environme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D7/61E21D11/38
CPCC09D1/00C09D7/61E21D11/38
Inventor 毛洪岗王尧胡甲林
Owner 安徽省钢铮矿山科技有限公司