High-expansion gelling agent for plugging coal mine tunnel

A coal mine roadway, high-expansion technology, applied in the field of high-expansion gelling agent for coal mine roadway sealing, can solve the problems of complex and cumbersome construction process, and achieve the effect of simple equipment, good support performance and high efficiency

Inactive Publication Date: 2019-08-23
焦作市中砼科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the ratio of material A and material B also makes the construction process cumbersome and complicated

Method used

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  • High-expansion gelling agent for plugging coal mine tunnel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The weight percentage of the ingredients is: calcium chloride 45Kg, calcium sulfoaluminate 30Kg, calcium aluminate 24Kg, spherical aluminum powder 0.5Kg, redispersible latex powder 0.5Kg.

Embodiment 2

[0022] The weight percentage of the ingredients is: calcium chloride 40Kg, calcium sulfoaluminate 30Kg, calcium aluminate 28.5Kg, spherical aluminum powder 0.5Kg, redispersible latex powder 1Kg.

Embodiment 3

[0024] The weight percentage of the ingredients is: calcium chloride 45Kg, calcium sulfoaluminate 25Kg, calcium aluminate 28.8Kg, spherical aluminum powder 0.2Kg, redispersible latex powder 1Kg.

[0025] The coal mine roadway plugging high expansion gelling agent material of the embodiment of the present invention 1-3 is carried out performance measurement, and during construction, the weight ratio of coal mine roadway blocking high expansion gelling agent, fly ash and others is 1:4: 5. The results are described in the table below.

[0026] 7-day strength (MPa) 28 day strength (MPa) Example 1 2.1 3.5 Example 2 1.5 2.5 Example 3 1.1 2.1

[0027] It can be seen from the above table that the coal mine roadway sealing high expansion gelling agent of the present invention has good strength and meets the needs of construction.

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Abstract

The invention discloses a high-expansion gelling agent for plugging a coal mine tunnel. The high-expansion gelling agent for plugging the coal mine tunnel comprises 40-50 wt% of calcium chloride, 20-30 wt% of calcium sulphoaluminate, 20-30 wt% of calcium aluminate, 0.2-0.5 wt% of spherical aluminum powder and 0.5-1 wt% of redispersible latex powder. The process is simple and advanced. The high-expansion gelling agent for plugging the coal mine tunnel only needs to be uniformly mixed with water and fly ash according to a certain ratio when used, the obtained mixture is conveyed to the filling area of a goaf, and devices used for underground filling are simple, and have a small quantity, a high efficiency and a high production capability. A slurry coagulates and fills without dehydrating, and the filled body has a good supporting performance; and the slurry can be prepared in a bottom surface intensive pulping manner or an underground onsite pulping manner, and the slurry has a good suspension property, and can be regarded as a homogeneous slurry during transportation, so pulping and conveying are convenient, and the slurry conveying quality can be guaranteed.

Description

technical field [0001] The invention belongs to coal mine filling and sealing materials, in particular to a high-expansion gelling agent for coal mine roadway sealing. Background technique [0002] In the field of coal mine fire area closure and goaf plugging technology, fire-proof filling materials are commonly used. Among them, traditional materials mainly include yellow mud, cement mortar, gangue mud, gypsum, gel, etc. New materials include Rock Hugh, Ma Lisan, Ruimi, Meigubao, three-phase foam, etc. These materials generally have disadvantages such as high cost, large volume shrinkage after dehydration, curing problems (unable to cure or long curing time, etc.), low curing strength, etc. In addition, polymer materials will release a lot of heat during the curing process, resulting in local temperature The rise will bring safety hazards to coal mines. In recent years, high water gelling agent mixed fly ash pouring technology has gradually been popularized and applied in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/32C04B28/06
CPCC04B7/326C04B28/06C04B2111/00724C04B2201/50C04B18/08
Inventor 乔集体乔晨阳
Owner 焦作市中砼科技有限公司
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