High-rate quick-setting mining hole sealing material and use method thereof

A sealing material and quick-setting technology, applied in the field of mining sealing materials, can solve the problems of insufficient sealing length, long setting time and low plasticity, and achieve the advantages of increasing the sealing length, low price and early strength promotion Effect

Inactive Publication Date: 2020-04-14
安徽春雨安全科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problems existing in the prior art, provide a high-magnification rapid-setting type mine sealing material and its use method, and solve the problems of insufficient sealing length, long setting time, high cost and low plasticity. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: A high-magnification rapid-setting type mine sealing material of the present invention, including 10% of quick-setting powder, 80% of Portland cement, 1% of sodium bentonite, 0.5% of sodium chloride, and 0.3% of sodium aluminate %, quicklime 8%, water reducer 0.15%, active agent 0.05%. When in use, the above-mentioned raw materials are mixed evenly according to the weight percentage, and then the dry material and water are evenly stirred. Use this material according to this ratio, the water-cement ratio is 1:1.8, the swelling time is 15 minutes, the expansion ratio is 15%, and the final setting time is 115 minutes.

[0023] The quick-setting powder is low-alkalinity sulphoaluminate cement, fast-hardening sulphoaluminate cement and conventional quick-setting agent PCS-2 in a weight ratio of 1:5:0.5.

Embodiment 2

[0024] Example 2: A high-magnification quick-setting type mine sealing material according to the present invention, including quick-setting powder 30%, Portland cement 60%, calcium-based bentonite 6%, sodium chloride 0.4%, aluminate Sodium 0.2%, quicklime 3%, water reducer 0.2%, active agent 0.2%. When in use, the above-mentioned raw materials are mixed evenly according to the weight percentage, and then the dry material and water are evenly stirred. Use this material according to this ratio, the water-cement ratio is 1:2, the swelling time is 8 minutes, the expansion ratio is 65%, and the final setting time is 50 minutes.

[0025] The quick-setting powder is low-alkalinity sulphoaluminate cement, fast-hardening sulphoaluminate cement and conventional quick-setting agent PCS-3 in a weight ratio of 1:5:0.5.

Embodiment 3

[0026] Embodiment 3: A kind of high-magnification rapid-setting type mine sealing material according to the present invention, comprising 20% ​​of quick-setting powder, 70% of Portland cement, 2% of calcium-based bentonite, 2% of sodium-based bentonite, chlorinated Sodium 0.3%, sodium aluminate 0.1%, quicklime 5.5%, water reducer 0.05%, active agent 0.05%. When in use, the above-mentioned raw materials are mixed evenly according to the weight percentage, and then the dry material and water are evenly stirred. Use this material according to this ratio, the water-cement ratio is 1:1.6, the swelling time is 13 minutes, the expansion ratio is 20%, and the final setting time is 80 minutes.

[0027] The quick-setting powder is low-alkalinity sulphoaluminate cement, fast-hardening sulphoaluminate cement and conventional quick-setting agent J85 in a weight ratio of 1:5:0.5.

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Abstract

The invention discloses a high-rate quick-setting mining hole sealing material and a using method thereof, and belongs to mining hole sealing materials. The hole sealing material is prepared from thefollowing raw materials in percentage by mass: 10%-30% of quick-setting powder, 60%-80% of Portland cement, 1%-6% of bentonite, 0.3%-0.5% of sodium chloride, 0.1%-0.3% of sodium aluminate, 3%-8% of quick lime, 0.05%-0.2% of a water reducing agent and 0.05%-0.2% of an active agent through even stirring according to the mass ratio of 1: 1.6-2. The hole sealing material is high in multiplying power and short in setting time, the expansion multiplying power ranges from 10% to 100%, the final setting time is shorter than 120 min, the compressive strength and the setting time are not affected whilethe multiplying power is improved, the strength and the setting time of gas extraction are met, and the long-term effect of hole sealing is guaranteed. Due to the high-expansion property of the hole sealing material, the pipe wall is filled with the hole sealing material, gas leakage caused by pores is avoided, the safety performance is improved, materials are saved for extraction pipes with the same length, and the gas extraction cost is reduced. The hole sealing material has the advantages of low price, no toxicity, no pollution, high hole sealing efficiency, favorable flowability and favorable plasticity.

Description

technical field [0001] The invention relates to a mine sealing material and a using method thereof, in particular to a high-magnification quick-setting mine sealing material and a using method, which are suitable for drilling and sealing holes in coal mine gas drainage. Background technique [0002] At present, the direct sealing technology of coal seam gas pressure measurement and drainage drilling mainly adopts clay sealing method, cement mortar sealing method, polyurethane sealing method or hybrid sealing method, etc. The clay hole sealing method has the advantages of cheap materials and low cost. This method is simple and feasible, and is suitable for sealing holes with various inclination angles. The disadvantage is that the clay material must be soft and hard. If it is too soft, it will easily stick to the hole wall, and the mud will not be delivered properly, forming cavities and cracks, which will cause pressure measurement to fail. The length of the sealing hole i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06
CPCC04B28/065C04B2111/00724C04B2111/00275C04B7/02C04B14/104C04B22/124C04B22/0093C04B22/064C04B22/04C04B2103/12C04B2103/302
Inventor 张海宾张连军冯娟高亚明
Owner 安徽春雨安全科技有限公司
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