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Mining foam paste filling material prepared by utilizing synergistic foaming method and preparation method thereof

A technology of paste filling and foaming method is applied in the fields of mining foam paste filling material and its preparation, coal mine goaf filling, roadway sealing and underground firewall construction, and can solve the problem of low foaming ratio and cost of filling body. High solid waste and other problems, to achieve the effect of reducing filling costs, improving economic benefits and protecting the environment

Active Publication Date: 2013-12-18
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inspired by the above research results, the introduction of concrete foaming technology into the preparation of filling materials can effectively solve the problems of high cost and solid waste disposal, but there are still problems such as low foaming ratio of the filling body

Method used

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  • Mining foam paste filling material prepared by utilizing synergistic foaming method and preparation method thereof
  • Mining foam paste filling material prepared by utilizing synergistic foaming method and preparation method thereof
  • Mining foam paste filling material prepared by utilizing synergistic foaming method and preparation method thereof

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Embodiment 1

[0034] According to the embodiment formula of the foam paste filling material for coal mines of the present invention, the mass percentages of the materials are prepared (see Table 1) and the above-mentioned preparation process is used for filling, and the fresh slurry is injected into a 40mm×40mm×160mm mold for trial molding, and the mold is demoulded Then continue to maintain in the standard curing box for 28 days (the temperature of the curing box is kept at about 20°C, and the relative humidity is controlled to be greater than 90%) to prepare foam paste filling material test pieces.

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Abstract

The invention discloses a mining foam paste filling material prepared by utilizing a synergistic foaming method and a preparation method thereof, which are widely suitable for filling of coal mine gob areas, closure of laneways and construction of underground firewalls. The filling material comprises a component A and a component B, wherein the component A comprises an active component, a fine aggregate, a mineral foaming agent, an activating agent, a coagulant and the like; and the component B comprises a foaming agent, a foam stabilizing agent, a water reducing agent and the like. The key point is as follows: after fly ash is activated, the fly ash can be used for replacing part of cement for being used as a cementing material; and in addition, a concrete foaming technology is applied to the filling material, and the mineral foaming agent is innovatively applied to work in coordination with a concrete foaming agent for foaming, so that the foaming expansion performance, pumping performance and anti-seepage performance of the filling material are improved on the original basis, a gob area with a larger space can be filled under the condition of low cement consumption, and low consumption, environmental friendliness, energy conservation and easiness in pumping are realized.

Description

technical field [0001] The invention belongs to the technical field of coal mine goaf filling, and relates to a mining foam paste filling material prepared by a cooperative foaming method and a preparation method thereof, which is widely applicable to coal mine goaf filling, roadway sealing and underground firewall construction. Background technique [0002] According to statistics, more than 30% of my country's total coal resource storage is buried under water bodies, under buildings, under roads and bridges (referred to as "three under") and other areas that are not suitable for mining or are not allowed to collapse after mining. With the reduction of open-pit coal mines and shallower coal resource reserves, the coal output rate has gradually failed to meet domestic production needs. Exploring how to develop and utilize deep and "three-down" coal resources and properly deal with follow-up issues has been received. The general concern of government departments, domestic rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/14
Inventor 王庆平秦汝祥闵凡飞王辉葛涛
Owner ANHUI UNIV OF SCI & TECH
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